[{"content":"People often say that the Mediterranean climate is the most suitable climate in the world for human habitation.\nWinters are not too cold, summers are sunny, and rainfall is not as frequent as in tropical regions. Indeed, some of the world\u0026rsquo;s most famous ancient civilizations were born around the Mediterranean Sea.\nSo, there is certainly some truth to this statement.\nBut I\u0026rsquo;ve been living in Spain for almost four years now and have experienced several full cycles of spring, summer, autumn, and winter here. I\u0026rsquo;m increasingly feeling that the so-called \u0026ldquo;best climate for human survival\u0026rdquo; might only be half right.\nThe Mediterranean climate may have been very suitable for the development of early human civilizations, but it may not be the most comfortable climate for modern people to live in.\nWhy Was the Mediterranean Climate Suitable for Early Civilizations? In the early stages of human civilization, the stability and regularity of a region\u0026rsquo;s climate were extremely important.\nThe Mediterranean region has distinct seasonal changes. People could gradually grasp the patterns by observing year after year when the weather would warm up, when to plant seeds, when the dry summer would begin, and when to harvest.\nWhat agriculture needs most, in fact, is regularity.\nWhen the climate is regular, people know when to plant, when to harvest, when to store grain, and when to prepare for winter. Only after agriculture stabilized could humans settle down for the long term, forming villages, cities, trade, writing, and nations.\nFrom this perspective, the Mediterranean climate was indeed conducive to the development of early agricultural civilizations.\nIt had another advantage: it was relatively dry.\nIn ancient times, when medical conditions were poor, hot and humid environments were more likely to breed mosquitoes and parasites, and also increased the risk of spreading certain infectious diseases. Back then, there were no window screens, insecticides, air conditioning, or proper drainage systems, let alone modern medicine.\nFor ancient people, living in a relatively dry region with distinct seasons and a regular climate was indeed easier for survival and for developing a stable civilization.\nSo I think the statement \u0026ldquo;the Mediterranean climate is the best for human survival\u0026rdquo; makes a lot of sense when placed in the context of early human civilization\u0026rsquo;s development.\nBut, Times Have Changed Humans today no longer live entirely at the mercy of the natural climate.\nThe mosquitoes, parasites, snakes, and infectious diseases that once made tropical regions fearsome can now be controlled through modern medicine, public health, urban drainage, environmental management, window screens, and insecticides.\nLand that was once difficult to cultivate can now be transformed through machinery, irrigation, and modern agricultural technology.\nMore importantly, modern humans have air conditioning.\nAir conditioning has largely changed humanity\u0026rsquo;s tolerance for climate. Previously, if a place was too hot, people might not have been able to work or live there for long periods; now, as long as you\u0026rsquo;re indoors, the temperature can be controlled within a relatively comfortable range.\nThis means that tropical regions, once considered unsuitable for human habitation, can become quite comfortable under modern technological conditions. Conversely, some of the past advantages of the Mediterranean climate may not be absolute advantages today.\nValencia\u0026rsquo;s Summers Feel Drier Than You\u0026rsquo;d Think I currently live in Valencia, which is in a typical Mediterranean climate zone.\nWhen many people think of the Mediterranean climate, they picture sunshine, sea breezes, blue skies, and beaches, imagining it\u0026rsquo;s comfortable year-round.\nBut after living here for almost four years, I\u0026rsquo;ve found that the actual feel is not always so mild. At least for me, the air here often feels dry, especially in the summer after turning on the air conditioning.\nSometimes the temperature difference between morning and evening is significant, and the perceived temperature difference between sunny and shady spots is also very noticeable. Standing in the sun, your skin might feel like it\u0026rsquo;s burning; step into the shade, and you\u0026rsquo;ll immediately feel cooler.\nSometimes you need an extra layer in the morning, find it unbearably hot at noon, and then it gets cool again in the evening. It\u0026rsquo;s like experiencing several seasons in a single day.\nFor me, this kind of temperature fluctuation isn\u0026rsquo;t necessarily more comfortable than a relatively stable tropical climate.\nA more obvious problem is using the air conditioner.\nWhen an air conditioner cools, it causes moisture in the air to condense and be drained outside. In other words, while cooling, an AC unit also typically dehumidifies.\nIf you\u0026rsquo;re in a humid environment to begin with, this dehumidifying effect is a good thing. But when the indoor air already feels dry, continuing to run the AC can worsen discomfort in the nose, throat, and skin. The nasal passages, in particular, can become dry, painful, and even prone to nosebleeds when the air is too dry.\nSo, a contradictory situation sometimes arises here in the summer:\nIf you don\u0026rsquo;t turn on the AC, it\u0026rsquo;s hot; if you do, it feels too dry.\nAlthough the temperature drops, your body doesn\u0026rsquo;t necessarily feel truly comfortable.\nAre Tropical Regions Actually More Suitable for Modern People? I used to think that tropical regions were too hot and humid, and definitely inferior to the Mediterranean climate.\nBut thinking about it now, in a place like Sanya in Hainan, although the outdoor temperature and humidity are high, the indoor environment can actually achieve a comfortable balance of temperature and humidity after turning on the air conditioner.\nOutdoor humidity in tropical regions can be very high. When the AC is on, it cools and dehumidifies simultaneously. With the right equipment, a well-sealed room, and proper settings, the indoor humidity can be brought down to a more comfortable range.\nIn contrast, in an environment that already feels dry, the further drop in humidity from running the AC can make you even more uncomfortable.\nAnother characteristic of tropical regions is the generally small temperature range. The temperature fluctuations between day and night, and throughout the year, are not as drastic. You don\u0026rsquo;t need to prepare many different types of clothing, nor will you find yourself wearing a jacket in the morning, changing into a short-sleeved shirt at noon, and putting the jacket back on in the evening.\nFrom a purely physical perspective, this stability can sometimes be more comfortable.\nOf course, tropical regions have their own problems:\nMuggy and humid outdoors; More mosquitoes and insects; Food spoils more easily; Greater reliance on cooling, electricity, and moisture-proofing in buildings. But many of these problems can now be mitigated by air conditioning, refrigerators, window screens, insecticides, modern medicine, and urban infrastructure. The original disadvantages of a tropical climate are no longer as insurmountable as they were in ancient times.\nThe \u0026ldquo;Best\u0026rdquo; Climate Actually Depends on the Era So now I feel that whether the Mediterranean climate is the best for human survival cannot be discussed outside the context of the times.\nFor ancient people, the Mediterranean climate was likely ideal. It had relatively regular seasons, climatic conditions suitable for agriculture, and a drier environment, which reduced some of the risks from diseases and natural conditions.\nIt was probably very suitable for the birth and development of early human civilizations.\nBut for modern people, the situation has changed.\nWe have air conditioning, modern medicine, and urban infrastructure, and we have the ability to actively change our living environment. Some of the past disadvantages of tropical regions can be partially offset by modern technology, while the dry feel, temperature fluctuations, and intense sunlight of the Mediterranean climate may not be comfortable for everyone.\nAt least based on my own experience of living in Spain for almost four years, I no longer believe that the Mediterranean climate is inherently the best climate in the world for human habitation.\nIt might have been the best for the growth of ancient civilizations, but not necessarily the best for people living today.\nThere has probably never been a single, fixed answer to what constitutes the \u0026ldquo;best\u0026rdquo; climate.\nAncient people needed a climate suitable for planting, harvesting, and reducing disease. What modern people need, perhaps, is just a room that, with the air conditioning on, is neither cold nor hot, neither humid nor excessively dry.\n","permalink":"https://www.houdao.org/en/is-the-mediterranean-climate-really-the-best-for-human-habitation/","summary":"\u003cp\u003ePeople often say that the Mediterranean climate is the most suitable climate in the world for human habitation.\u003c/p\u003e\n\u003cp\u003eWinters are not too cold, summers are sunny, and rainfall is not as frequent as in tropical regions. Indeed, some of the world\u0026rsquo;s most famous ancient civilizations were born around the Mediterranean Sea.\u003c/p\u003e\n\u003cp\u003eSo, there is certainly some truth to this statement.\u003c/p\u003e\n\u003cp\u003eBut I\u0026rsquo;ve been living in Spain for almost four years now and have experienced several full cycles of spring, summer, autumn, and winter here. I\u0026rsquo;m increasingly feeling that the so-called \u0026ldquo;best climate for human survival\u0026rdquo; might only be half right.\u003c/p\u003e","title":"Is the Mediterranean Climate Really the Best for Human Habitation?"},{"content":"In the overseas Chinese community, there exists an extremely surreal psychological structure.\nThey are not just fervent racists, but also subscribe to a kind of incurable \u0026ldquo;reverse racism\u0026rdquo;: they not only discriminate against other ethnic groups but also seem to not truly identify with their own deep down; at the same time, they harbor a particular loathing for other minority groups who share similar circumstances and social positions.\nIn the eyes of some Chinese people, it\u0026rsquo;s as if humans can be neatly divided into different ranks based on skin color, ethnicity, and religion.\nMention Moroccans, Gypsies, Indians, or Black people, and the disgust, contempt, and suspicion are barely concealed.\nA Moroccan steals something, and it becomes: \u0026ldquo;Those Moroccans are born thieves, not a single one of them is any good.\u0026rdquo;\nA few Gypsies gather together, and it becomes: \u0026ldquo;This ethnic group is a social cancer, completely beyond saving.\u0026rdquo;\nA Black person appears in a negative news story, and it becomes: \u0026ldquo;Black people have low IQs and poor character, dragging down the entire standard of Spain.\u0026rdquo;\nThis set of racist logic targeting people of color is so simple it requires no thought, and so arrogant it seems irrefutable.\nBecause in this logic, others are never specific individuals.\nOthers are only labels.\nBut here comes the truly fascinating part.\nIn front of people of color, these individuals act like high and mighty judges; but when they turn to face local white Spaniards, even if the other person is just an uneducated redneck, they immediately become exceptionally docile, polite, and even carefully try to please them, afraid of causing the slightest displeasure.\nThis mentality of fawning over the powerful while judging the weak is also vividly demonstrated in other phenomena within the overseas Chinese community.\n1. Old Immigrants Against New Immigrants: Kicking Away the Ladder After Climbing Ashore After getting their own residency permits, some people turn around and become the most radical anti-immigrant vanguards.\nThey, too, left their homeland to make a living across borders. When they stayed, it was because they were \u0026ldquo;forced by circumstances,\u0026rdquo; \u0026ldquo;striving hard,\u0026rdquo; and \u0026ldquo;changing their destiny.\u0026rdquo;\nWhen other immigrants want to stay, it becomes an \u0026ldquo;illegal invasion,\u0026rdquo; \u0026ldquo;freeloading on welfare,\u0026rdquo; and \u0026ldquo;destroying social order.\u0026rdquo;\nMany who entered Europe through grey-area paths in the early years and later obtained legal status in various ways, as soon as they find their footing, can\u0026rsquo;t wait to kick away the ladder behind them.\nAfter they\u0026rsquo;ve made it ashore, they hope those who come after will remain in the water forever.\nTheir own experience has context, reasons, and real-life pressures; it\u0026rsquo;s a personal story worthy of understanding.\nOthers\u0026rsquo; experiences are reduced to a single label: illegal immigrant.\nTheir own illegal residency was due to life\u0026rsquo;s pressures.\nOthers\u0026rsquo; illegal residency is moral corruption.\nTheir own immigration was to pursue a better life.\nOthers\u0026rsquo; immigration becomes an \u0026ldquo;invasion\u0026rdquo; of Western society.\nThis isn\u0026rsquo;t about principles.\nIt\u0026rsquo;s simply a double standard.\n2. Atheists Charging to Defend \u0026ldquo;Christian Civilization\u0026rdquo; Another phenomenon is even more absurd.\nMany Chinese people are neither Christian nor Jewish.\nBut once overseas, they act more hostile towards Muslims than many Jews, and are more zealous in defending so-called \u0026ldquo;Christian civilization\u0026rdquo; than many actual Catholics.\nThey spend their days online cheering for right-wing politicians.\nIf one Muslim extremist commits a crime, it\u0026rsquo;s enough to prove that all Muslims are dangerous, backward, and barbaric.\nThe actions of one person can be infinitely magnified to define billions of Muslims worldwide.\nBut in reality, Muslims have never been a monolithic group.\nI have Hui friends and have had contact with some Muslims living in Europe.\nMost of them are no different from ordinary people: they work, do business, get married, raise children, and strive to live their lives.\nSome are very devout, while others just maintain dietary habits like not eating pork; some are conservative in their thinking, while others are very open-minded.\nThe weight and expression of religion in their lives vary greatly.\nBut once online, all these specific individuals disappear.\nWhat\u0026rsquo;s left is just one huge, vague label: Muslim.\nSome Chinese people think that by hating Muslims, they are standing on the side of \u0026ldquo;modern civilization.\u0026rdquo;\nBut they seem to forget: in the eyes of a true white supremacist, a yellow-skinned, foreign-language-speaking Chinese atheist who doesn\u0026rsquo;t believe in God is equally an incomprehensible, unassimilable infidel and outsider.\nCharging into battle for them doesn\u0026rsquo;t mean they will see you as one of their own.\n3. Chinese and Indians: Hurting Each Other in the Same Ecological Niche In Western societies, Chinese and Indian immigrants often get very similar scripts.\nMany Chinese and Indian descendants enter local society through diligence and technical skills, working in IT, engineering, medicine, research, and other professional fields, putting down roots in a foreign land.\nTheir situations are fundamentally similar.\nBut many Chinese people have a particular dislike for Indians.\nWhen they see Indians forming cliques and getting promotions at work, their first thought isn\u0026rsquo;t to reflect on why they themselves aren\u0026rsquo;t good at communication, expression, and seizing opportunities, but to comment sourly: \u0026ldquo;Indians are just good at bullshitting.\u0026rdquo;\nAfter watching a few videos of dirty streets in India, their sense of superiority immediately inflates, as if over a billion Indians can be summed up by a few short videos.\nIndia certainly has serious problems with poverty, sanitation, the caste system, women\u0026rsquo;s rights, and infrastructure.\nThese issues are entirely open to criticism.\nBut by the same token, Chinese people are unwilling to let Westerners use a few videos of rural China, a few fraud cases, or a few negative news stories to define the whole of China.\nBecause when it concerns ourselves, we know: China is vast, there are many Chinese people, and a few individuals cannot represent the entire group.\nBut when it comes to India, this basic judgment suddenly vanishes.\nA few videos can represent over a billion people.\nA few negative incidents can prove an entire nation is \u0026ldquo;innately inferior.\u0026rdquo;\nWhat\u0026rsquo;s more ironic is that in the eyes of some genuinely prejudiced Westerners, Chinese and Indians are not as different as they imagine themselves to be.\nBoth are Asian faces, both are foreign tech labor, both are people who can be hired, compared, and replaced.\nChinese and Indians compete with and mock each other, each trying to prove they are more superior, more aligned with the Western mainstream.\nBut the people who actually set the rules, control the capital, and distribute the power are probably just watching from the sidelines as two groups in similar situations attack each other.\n4. More Anxious About the \u0026ldquo;Purity of White Society\u0026rdquo; Than White People Themselves The most absurd point is this: some Chinese people are more anxious about the so-called \u0026ldquo;purity of white society\u0026rdquo; than actual white Europeans.\nWhen they see more and more Black, Arab, and Indian people in France, the UK, or Germany, they start to \u0026ldquo;grieve\u0026rdquo; for Europe.\nWhen they see more Moroccans and Latin Americans on the streets of Madrid and Barcelona, they become even more furious than the local Spanish right-wing.\nThey want the communities they live in to be as white as possible.\nIt\u0026rsquo;s as if the more white people around, the higher their social class; the fewer Black people, Moroccans, and other immigrants, the more respectable their status.\nBut the reality is very simple: You are not white.\nA true racist will never consider you one of their own just because you also dislike Moroccans, Gypsies, Black people, or Muslims.\nWhen the economy is booming and labor is needed, they might praise you for being hardworking, obedient, and resilient—an excellent cog in the machine.\nBut once the economy slumps, resources become scarce, and social conflicts intensify, you too will become the \u0026ldquo;outsider\u0026rdquo; who \u0026ldquo;steals jobs,\u0026rdquo; \u0026ldquo;takes up resources,\u0026rdquo; and \u0026ldquo;can\u0026rsquo;t integrate.\u0026rdquo;\nYou think that by excluding others, you have entered the camp of the strong.\nIn reality, you are just temporarily standing on a slightly higher rung of the discrimination ladder.\nThis sense of security, obtained by discriminating against other vulnerable groups, is as fragile as a sheet of window paper.\nIt tears with a single poke.\n5. You Are a Complex Person, Others Are Just Simple Labels Ultimately, behind all this is the same way of thinking: seeing only yourself as a specific individual, while compressing others into a label.\nA Chinese person commits fraud—it\u0026rsquo;s an individual act, not representative of all Chinese people.\nA Moroccan steals—it proves that \u0026ldquo;all Moroccans are unreliable.\u0026rdquo;\nA Chinese person overstays their visa—they have real-life pressures, visa issues, and personal hardships.\nAn African overstays their visa—they are just an \u0026ldquo;illegal immigrant.\u0026rdquo;\nPoverty and crime exist in Chinese society—it\u0026rsquo;s due to complex historical, economic, educational, and social factors.\nSimilar problems exist in other ethnic groups—it\u0026rsquo;s attributed to their national character, religious flaws, or genetic issues.\nYour own culture needs to be respected.\nOthers\u0026rsquo; culture is a refusal to integrate.\nYour own group solidarity is mutual help.\nWhen Indians, Muslims, or other immigrants form groups, it\u0026rsquo;s dangerous and exclusionary.\nWhen it concerns yourself, everything has countless reasons.\nWhen it concerns others, a nationality, a skin color, and a religious label can explain everything.\nThis is not rationality.\nThis is just a double standard.\n6. Group Differences Can Be Discussed, but Cannot Replace Judgment of an Individual Of course, real differences may exist between different groups.\nDue to different historical, economic, educational, age structures, family environments, and social statuses, different groups may show different statistical results in crime rates, employment rates, income, and education levels.\nThese issues can be discussed and should be studied.\nBut a group average cannot be a verdict on a specific individual.\nA community having a high crime rate does not mean everyone from that community is a criminal.\nA group having a lower average level of education does not mean the person in front of you is uneducated or uncivilized.\nExtremists appearing within an ethnic group does not prove that everyone supports extremism.\nGroup data describes trends.\nBut in real life, we face specific individuals.\nWhether a person is honest depends on their actions.\nWhether a person is trustworthy depends on their words and deeds.\nWhether a person is good or bad depends on how they treat others.\nNot on their skin color, nationality, ethnicity, or religion.\nIf a Moroccan steals, punish the person who stole.\nIf a Muslim commits violence, hold the perpetrator responsible.\nIf a Chinese person commits fraud, they should also be dealt with according to the law.\nBut you cannot put an entire ethnic group on trial for the actions of one person.\nSeeing Only Yourself as Human is the Most Refined Form of Self-Loathing A person is first and foremost a specific individual, and only then their nationality, skin color, ethnicity, and religion.\nIf a person cannot even truly accept their own identity and can only find a sense of superiority by discriminating against others, prove their own worth by belittling groups in similar situations, and gain a bit of illusory recognition by fawning over the powerful, then this is not called integrating into civilization.\nThis is just a deep-seated self-loathing.\nThe most ironic part is this: while they style themselves as guardians of modern civilization and reason, they use the most primitive, crudest racial labels.\nWhile they demand that others not discriminate against Chinese people, they unhesitatingly discriminate against Black people, Muslims, Indians, Moroccans, and Gypsies.\nWhile they insist that Chinese people cannot be represented by a few bad apples, they use a few bad apples to define all other ethnic groups.\nThey see themselves as complex human beings.\nBut they see others as simple labels.\nThis is not civilization, and it is certainly not rationality.\nIt is just the most refined, most twisted double standard.\nOne could even say it is a farcical performance of imagining oneself to be white.\n","permalink":"https://www.houdao.org/en/seeing-yourself-as-an-individual-but-others-as-labels-the-absurd-psychology-behind-anti-black-islamophobic-and-anti-immigrant-views/","summary":"\u003cp\u003eIn the overseas Chinese community, there exists an extremely surreal psychological structure.\u003c/p\u003e\n\u003cp\u003eThey are not just fervent racists, but also subscribe to a kind of incurable \u0026ldquo;reverse racism\u0026rdquo;: they not only discriminate against other ethnic groups but also seem to not truly identify with their own deep down; at the same time, they harbor a particular loathing for other minority groups who share similar circumstances and social positions.\u003c/p\u003e\n\u003cp\u003eIn the eyes of some Chinese people, it\u0026rsquo;s as if humans can be neatly divided into different ranks based on skin color, ethnicity, and religion.\u003c/p\u003e","title":"Seeing Yourself as an Individual, but Others as Labels: The Absurd Psychology Behind Anti-Black, Islamophobic, and Anti-Immigrant Views"},{"content":"Many people with a Spanish non-lucrative visa have a common question:\nI can\u0026rsquo;t work and have no Spanish salary or company, so do I still need to file taxes?\nThe answer isn\u0026rsquo;t a simple \u0026lsquo;yes\u0026rsquo; or \u0026rsquo;no.\u0026rsquo; More accurately: having a non-lucrative visa does not automatically exempt you from taxes.\nThe non-lucrative visa is an immigration status that, in principle, does not permit the holder to work or conduct business in Spain. Whether you need to file personal income tax, however, depends on a different set of criteria under tax law: whether you are considered a Spanish tax resident and whether your income and assets trigger a filing obligation.\nThis article is based on public information from the Spanish Tax Agency (AEAT) and is for general informational purposes only. It does not constitute tax filing or legal advice. For situations involving cross-border income, overseas assets, rental properties, securities, and crypto assets, it is recommended to consult a professional gestor or tax lawyer.\n1. First, Determine: Are You a Spanish Tax Resident? Common criteria for determining tax residency include:\nSpending more than 183 days in Spain within a calendar year. Having your main center of economic activities or interests located in Spain. Your spouse and minor children normally reside in Spain—this may create a presumption of tax residency, although it can be rebutted. Therefore, if you live in Spain for most of the year, your children attend school here, and your family life is centered here, you should seriously evaluate your tax residency status.\nThe correct way to think about it is not \u0026ldquo;I can\u0026rsquo;t work, so I don\u0026rsquo;t need to file taxes,\u0026rdquo; but rather:\nAm I a Spanish tax resident? Do my income and assets meet the IRPF filing requirements?\n2. \u0026lsquo;Cannot Work\u0026rsquo; Does Not Mean No Income Needs to Be Declared Many people confuse two different concepts:\nThe inability to work under immigration law. The requirement to declare income under tax law. Non-lucrative visa holders typically support themselves with savings, pensions, investment income, or other non-labor income. If you become a Spanish tax resident, the following items may need to be included in your tax return:\nBank deposit interest. Gains and dividends from stocks, funds, and bonds. Rental income from properties. Interest from overseas bank accounts and foreign investment income. Gains from crypto assets. Imputed property income from non-primary residences. So, having a non-lucrative visa and being unable to work does not mean that all legal income is exempt from declaration.\n3. When to File Personal Income Tax for the 2025 Tax Year? Spanish personal income tax is commonly known as Declaración de la Renta / IRPF. It is generally filed in the spring/summer of the following year for the income of the previous calendar year.\nThe online filing period for the 2025 Renta is:\nApril 8 to June 30, 2026\nIf you choose to pay by direct debit from your bank, the deadline may be earlier than the final online filing date. You should always refer to the official AEAT announcement and the Renta WEB portal for that year.\nTaxpayers with a Digital Certificate (Certificado Digital), Cl@ve, or electronic DNI can file online without needing to visit a tax office in person.\n4. What Does It Mean If Your Bank Interest Exceeds €1,600? This is the most common situation for families with non-lucrative visas. Many have no salary, but their bank savings, term deposits, or investment products generate interest and returns.\nIn its explanation of filing obligations for the 2025 tax year, the AEAT sets a combined annual threshold of €1,600 for the following items:\nCapital income on which tax has already been withheld or paid in advance, such as bank interest and dividends. Eligible capital gains on which tax has already been withheld or paid in advance. It is crucial to note:\nThe €1,600 is not a tax-free allowance; it is one of the thresholds for determining whether you are required to file a Renta return.\nIt does not mean that income under €1,600 is always tax-free, nor does it mean that you only pay tax on the amount exceeding it. Whether you must file depends on a combination of factors, including the type of income, whether tax was withheld, other income sources, and applicable rules.\nIf your situation is very simple—no salary, self-employment, rental income, complex investments, second property, or other income, and only a small amount of bank interest with tax already withheld—you may not need to file a Renta return if you are below the relevant thresholds. However, if you have any overseas income, rental properties, investment gains, government subsidies, crypto assets, or a second home, you cannot rely solely on the €1,600 figure.\n5. Filing a Return Doesn\u0026rsquo;t Necessarily Mean Paying More Tax; You Might Get a Refund When banks pay interest, they usually withhold a portion of the tax. If your overall annual income is low, or if factors like your personal and family minimum allowances result in a final tax liability that is lower than the amount withheld, you may receive a refund after filing your Renta.\nTherefore, \u0026ldquo;needing to file\u0026rdquo; is not the same as \u0026ldquo;needing to pay more tax\u0026rdquo;:\nA devolver: Refund due. A ingresar: Payment due. Even if your interest exceeds the relevant filing threshold, you may simply be required to formally declare the situation, and the final result may not be an additional tax payment.\n6. Why Can Failing to File When Required Affect Future Procedures? If you meet the mandatory filing requirements but fail to submit a Renta return, it can create a record of non-compliance with your tax obligations and may lead to back taxes, interest, or penalties.\nWhen applying for residency renewal, long-term residency, or other administrative procedures, the authorities may require proof of tax compliance, which is a:\nCertificado de estar al corriente de obligaciones tributarias\nCommonly known in English as:\nTax clearance certificate. Certificate of tax compliance. Certificate of being up to date with tax obligations. This certificate verifies whether the applicant has fulfilled their relevant tax obligations at the time of issuance. If there are undeclared filings, outstanding tax debts, or other unresolved issues, you may not be able to obtain a positive certificate.\n7. If You Own Two Properties, Be Aware of Imputed Property Income If you only own one property in Spain that serves as your primary residence (Vivienda habitual) throughout the year, you generally will not generate imputed property income solely from owning it.\nA second property, however, may be different. Under Spanish tax law, the concept of Imputación de rentas inmobiliarias can be understood as follows: even if a property is not rented out and you receive no actual rent, it may still generate imputed income that must be declared in your Renta, as long as it is not your primary residence and is not used for economic activities.\nCommon property uses include:\nVivienda habitual: Primary residence. A disposición de sus titulares: Vacant property, holiday home, or second home available for the owner\u0026rsquo;s use. Arrendamiento: Rented property. Afecto a actividades económicas: Used for economic activities. If a primary residence is mistakenly classified as A disposición de sus titulares, the system may incorrectly calculate imputed property income. Conversely, a second home cannot be arbitrarily marked as a primary residence to avoid tax; it must be declared according to its actual use.\n8. Just Because It\u0026rsquo;s Not in the Tax Agency\u0026rsquo;s Data Doesn\u0026rsquo;t Mean You Don\u0026rsquo;t Have to Declare It Information such as bank interest and Spanish property details usually appears in your Datos fiscales (tax data). However, overseas income, foreign bank interest, certain investment gains, and other asset information may not be fully included in your draft Renta return.\nIt is advisable to keep your own records:\nAnnual bank interest statements. Annual reports from investment platforms. Statements for interest from overseas accounts. Rental agreements and payment records. Property usage details and cadastral information. Receipts for deductible costs and expenses. The Renta draft (borrador) only contains information the AEAT already has; it does not represent the taxpayer\u0026rsquo;s complete income.\n9. What to Prepare Before Filing Online Digital Certificate, Cl@ve, or electronic DNI. NIE / TIE. Spanish bank IBAN. Spouse and children\u0026rsquo;s information. Property cadastral reference number (Referencia Catastral). Bank interest and tax withholding information. Annual reports from investment platforms. Rental property details. Overseas income and asset information. Actual usage information for any second homes. Married individuals can also compare:\nDeclaración individual: Individual filing. Declaración conjunta: Joint filing for a couple or family unit. Joint filing is not always more tax-efficient. You should base your decision on the simulation results in Renta WEB.\n10. Steps to File Your Renta Online with a Digital Certificate Step 1: Go to the AEAT\u0026rsquo;s Renta Page Go to the Spanish Tax Agency\u0026rsquo;s official website, find the Campaña de Renta for the corresponding year, and select:\nServicio tramitación de borrador / declaración — Renta DIRECTA y Renta WEB\nRenta DIRECTA is more suitable for simple returns with no modifications needed. When dealing with a spouse, children, property, interest, or investments, Renta WEB is usually more convenient for reviewing and editing.\nStep 2: Log In and Confirm Contact Details Log in using your Digital Certificate, electronic DNI, or Cl@ve. The first time you enter, the system may ask you to set up an email address or phone number for notifications. It is recommended to provide at least one valid contact method.\nStep 3: Confirm Your Tax Address The system may require Ratificación del domicilio fiscal actual. After confirming your address, select your housing status based on your actual situation:\nPropietario: Owner. Arrendatario: Tenant. Otras situaciones: Other situations. Step 4: Check Your Datos fiscales First Review the information the tax agency already has, such as bank interest, tax withheld, salary, property, investments, subsidies, and pensions. Do not submit the draft immediately just because it contains data, and do not assume an income item is not declarable just because it is missing from the draft.\nStep 5: Verify Personal and Family Data In Datos personales y familiares, check:\nName, NIE, and date of birth. Marital status and spouse\u0026rsquo;s information. Children and family unit information. Autonomous Community of residence. Tax address. If your spouse actually lives with you in Spain, do not mistakenly select \u0026ldquo;spouse is a non-resident.\u0026rdquo; Information about children and custody should reflect your true family situation.\nStep 6: Verify Property Usage In Información catastral, confirm the ownership percentage and actual use of each property. A full-year primary residence should typically show something like:\nVivienda habitual: Sí Días hab.: 365 Arrendamiento: No A disposición del titular: No Actividad económica: No If a couple each owns 50%, it is normal for the system to show each partner\u0026rsquo;s share separately; this is not a duplicate declaration.\nStep 7: Compare Filing Results Go to Resumen de declaraciones to compare:\nCONJUNTA: Joint filing. Declarante: Your individual filing. Cónyuge: Your spouse\u0026rsquo;s individual filing. Confirm whether you are due a refund or have a payment to make, check for any warnings or omissions, and then decide on the filing method.\nStep 8: Submit and Save the Receipt Confirm your bank IBAN and submit. A successful submission page will typically display:\nSu presentación ha sido realizada con éxito\nBe sure to download and save the PDF receipt. The Código Seguro de Verificación (CSV) on it can be used to verify the document\u0026rsquo;s authenticity.\n11. How to Apply for a Tax Clearance Certificate After Filing The tax clearance certificate is not requested on the IRPF filing page. The official AEAT path is:\nTodas las gestiones → Certificados → Situación tributaria → Estar al corriente de obligaciones tributarias\nAfter logging in:\nTo apply for yourself, select En nombre propio. Choose the certificate type based on its intended use. For residency-related procedures, you can select the category for work or residence permits for foreigners. For general purposes, you can select Genérica. After submitting, download the PDF certificate when the system allows. If the certificate states se encuentra al corriente de sus obligaciones tributarias, the result is POSITIVO, meaning your tax status was compliant at the time of issuance. The validity period of the certificate depends on the requirements of the authority requesting it.\n12. Six Common Oversights to Avoid A non-lucrative visa does not equal tax exemption. Residency status and tax residency are two different concepts. €1,600 is not a tax-free allowance. It is one of the thresholds for determining the obligation to file for specific capital income and gains. Filing a return does not mean you will owe more tax. Tax already withheld may be partially or fully refunded after filing. Do not misclassify your primary residence. The tax implications of Vivienda habitual and A disposición de sus titulares are different. A second home may require you to declare imputed property income, even if it is not rented out. Do not rely solely on the system\u0026rsquo;s draft return. Taxpayers must proactively verify information, especially for overseas income and complex assets. Conclusion Filing taxes in Spain may seem complicated, but the core logic can be broken down into a few steps:\nDetermine if you are a Spanish tax resident. Gather all information on bank interest, investments, rent, overseas income, and properties. Determine if you have a filing obligation. Go to Renta WEB and check your Datos fiscales. Verify your personal, spousal, child, property, and bank details. Compare the results of individual vs. joint filing. Save the PDF receipt after submission. If needed for an administrative procedure, apply for a tax clearance certificate. If your income structure is simple, you can try filing online yourself. For situations involving overseas assets, rental income, stocks, funds, crypto assets, dual tax residency, or tax treaties, you should consult a professional.\nAEAT Official References 2025 年度 Renta 与 Patrimonio 申报日期 2025 年度无需申报的收入门槛汇总 自然人税务居民的判断标准 申请税务合规证明的官方说明 ","permalink":"https://www.houdao.org/en/spanish-non-lucrative-visa-and-taxes-filing-requirements-bank-interest-and-renewal-certificates/","summary":"\u003cp\u003eMany people with a Spanish non-lucrative visa have a common question:\u003c/p\u003e\n\u003cblockquote\u003e\n\u003cp\u003eI can\u0026rsquo;t work and have no Spanish salary or company, so do I still need to file taxes?\u003c/p\u003e\n\u003c/blockquote\u003e\n\u003cp\u003eThe answer isn\u0026rsquo;t a simple \u0026lsquo;yes\u0026rsquo; or \u0026rsquo;no.\u0026rsquo; More accurately: \u003cstrong\u003ehaving a non-lucrative visa does not automatically exempt you from taxes.\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003eThe non-lucrative visa is an immigration status that, in principle, does not permit the holder to work or conduct business in Spain. Whether you need to file personal income tax, however, depends on a different set of criteria under tax law: whether you are considered a Spanish tax resident and whether your income and assets trigger a filing obligation.\u003c/p\u003e","title":"Spanish Non-Lucrative Visa and Taxes: Filing Requirements, Bank Interest, and Renewal Certificates"},{"content":"A Discussion on the Boundaries of Science, Complex Systems, and Empirical Testing\nFatalism holds that a person\u0026rsquo;s life is already written; the belief in a personal god posits the existence of a deity with will and emotions who responds to prayers, rewards good deeds, and punishes blasphemy.\nThese two claims, though seemingly from different domains, share the same logical structure: they both claim to explain reality but fail to offer clear, stable, and repeatedly verifiable predictions about it.\nNo matter what happens, they can reinterpret the outcome after the fact to prove themselves correct.\nIf you succeed, it was destined; if you fail, that too was destined.\nIf a prayer is answered, it\u0026rsquo;s a response from God; if it\u0026rsquo;s not, God has other plans.\nA theory that cannot fail regardless of the outcome may seem to explain everything, but in reality, it has never been truly tested against reality.\nThis article aims to argue that, according to a unified scientific standard, neither fatalism nor a personal god are explanations consistent with natural reality. Instead, they are incorrect descriptions that cannot withstand empirical testing.\nTo complete this argument, we must first answer a more fundamental question: what exactly is science? \u0026ldquo;Science\u0026rdquo; is perhaps one of the most abused words in modern society.\nSome say a certain health regimen is scientific, others claim an educational method aligns with scientific principles, and still others believe that any view using mathematical formulas, physics terminology, or proposed by a famous scholar is inherently scientific.\nBut what truly defines science? Is it anything a scientist says? Is it the use of formulas and jargon? Or can any view that finds a few supporting examples be called scientific? None of these.\nScience is not an identity, not an authority, and not a set of esoteric-sounding language.\nScience is the most reliable and closest description of the natural world we currently have, established through public testing, repeated verification, error control, and the specification of boundaries.\nScience is not ultimate truth, but it is also far from being a mere arbitrary opinion.\nIt may be revised in the future, but it remains the best knowledge system we possess today for understanding the actual workings of the natural world.\nAny theory that claims to explain nature, describe reality, or influence objective outcomes must submit itself to the judgment of reality.\nI. The Absoluteness of Mathematics and the Relativity of Science To understand science, one must first distinguish between mathematics and the natural sciences.\nMathematics studies abstract structures.\nWithin a given set of axioms, definitions, and logical rules, a conclusion that has been rigorously proven possesses logical necessity.\nIn the standard system of natural number arithmetic, 1+1=2.\nThis conclusion is not derived from countless experiments with two apples but is rigorously deduced from the definitions of numbers, addition, and their corresponding rules.\nApples can rot, be cut, or be taken away, but these real-world changes do not alter the fact that 1+1=2 in abstract arithmetic.\nOf course, the absoluteness of mathematics has a prerequisite: it exists within a given axiomatic system.\nEuclidean and non-Euclidean geometries use different premises and arrive at different conclusions. This is not a contradiction within mathematics but a reflection of them studying different formal systems.\nTherefore: the certainty of mathematics comes from logic. As long as the premises remain unchanged, what is correct is correct, and what is wrong is wrong.\nThe natural sciences are entirely different.\nNatural science does not study abstract systems defined by humans but the real world that exists independently of human will.\nA physical theory, no matter how mathematically elegant or internally consistent, cannot prove that nature must operate according to it on these grounds alone.\nIt must be subjected to experiment.\nTherefore, natural science rarely offers an absolute truth that holds under all conditions and never needs revision.\nWhat it usually provides is: under what conditions it holds; to what degree of precision it is accurate; what margin of error is allowed; and beyond what scope it requires modification.\nThis is the most fundamental difference between mathematics and natural science: mathematics seeks logical necessity within defined premises; natural science seeks empirical reliability in the real world.\nThe \u0026ldquo;relativity\u0026rdquo; of science does not mean that science is subjective or that everyone can have their own truth.\nIt means that scientific conclusions are valid relative to specified conditions, scopes, times, precisions, and errors.\nGiven the same conditions and the same methods, the results should be stable.\nTherefore, although science is not absolute truth, it is humanity\u0026rsquo;s most correct, most reliable, and closest description of the natural world to date.\nII. What Kind of Theory Is Scientific? A theory about the natural world should meet at least the following five conditions: it can be publicly tested; it can be repeatedly experimented on or verified by independent evidence; it holds stably under specified conditions, times, and error margins; it can specify its own scope of applicability, precision, and boundaries; and it cannot interpret all possible outcomes as confirmation of its correctness.\nHere, we must limit the scope of our discussion.\nThe terms \u0026ldquo;scientific\u0026rdquo; and \u0026ldquo;unscientific\u0026rdquo; in this article apply to factual claims about the natural world and objective reality, such as: how objects move; how diseases spread; whether a drug is effective; how the universe evolves; whether a certain human behavior produces stable consequences; whether a certain force truly exists and affects reality.\nAesthetic judgments, moral choices, and mathematical theorems are not the same type of proposition.\n\u0026ldquo;This piece of music is beautiful\u0026rdquo; expresses a personal aesthetic preference, not a natural law that requires everyone to reach the same conclusion. Mathematics, on the other hand, establishes certainty through formal proof.\nBut as soon as a claim asserts that an object truly exists, truly affects nature, or truly changes people\u0026rsquo;s lives, it enters the realm of scientific evaluation.\nWithin the scope defined in this article: a claim about nature that cannot be tested, cannot be independently verified, or conflicts with reliable facts cannot be established as correct natural knowledge.\nIII. Testability Is Only the First Step into Science The fact that a claim can be tested does not mean it is already reliable scientific knowledge.\nScientific exploration involves at least three stages.\nThe first stage is a testable hypothesis.\nFor example, someone might propose: \u0026ldquo;A certain drug can reduce the mortality rate of a specific type of patient.\u0026rdquo; As long as it specifies the patient group, dosage, duration, control method, and criteria for effectiveness, it can enter scientific inquiry.\nThe second stage is a theory that has withstood testing.\nA hypothesis gradually becomes reliable scientific knowledge only after undergoing numerous public, rigorous, and repeatable experiments, or being supported by independent evidence from different sources, and consistently holding true under specified conditions and within permissible errors.\nThe third stage is a hypothesis falsified by experiment.\nIf a hypothesis is consistently proven to be false by numerous reliable experiments within its claimed scope of applicability, it should be revised or discarded.\nTherefore: testability determines if a claim can enter scientific inquiry; withstanding tests determines if it can become reliable scientific knowledge.\nScience allows for incorrect conjectures.\nBut an incorrect conjecture does not automatically become correct knowledge just because it was studied by scientists.\nThe reliability of science comes not from scientists never making mistakes, but from science\u0026rsquo;s ability to discover, publicize, correct, and eliminate errors.\nIV. What Does \u0026ldquo;Falsifiability\u0026rdquo; Really Mean? When discussing the boundaries of science, many people cite Karl Popper\u0026rsquo;s concept of \u0026ldquo;falsifiability.\u0026rdquo;\nIn a literal Chinese interpretation, this term can easily be misunderstood to mean: only things that can be proven false are science.\nIf this were the meaning, it would of course be absurd.\nA theory that has been consistently proven false by numerous reliable experiments within its claimed scope of applicability cannot continue to be considered correct scientific knowledge.\nWhat Popper truly wanted to emphasize is that a theory must make a clear judgment and cannot interpret any possible outcome as a confirmation of its correctness.\nTherefore, instead of repeatedly explaining the ambiguous term \u0026ldquo;falsifiability,\u0026rdquo; it is better to state directly: science must submit to empirical tests with clear criteria for success and failure.\nBut it must be especially emphasized: a true test must include the possibility of failure.\nIf a theory claims to be correct when faced with favorable results, and then offers a different explanation to still claim correctness when faced with unfavorable results, it has not truly been tested; it has merely declared victory unilaterally.\nA theory that can explain all outcomes often predicts no specific outcome.\nV. Anecdotes and Single Successes Don\u0026rsquo;t Prove Causation Many people like to use a single personal experience to prove a grand theory.\nFor example, someone might say: \u0026ldquo;Last night I prayed to God to find money on my way out today, and I really did find some, so God answered me.\u0026rdquo;\nThis only shows that two events occurred in temporal succession: he prayed, and then he found money.\nBut temporal succession does not automatically prove a causal relationship.\nIt could have been a coincidence; perhaps people often drop loose change on that road; perhaps he had prayed many times before without success and only remembered this one time; or perhaps after praying, he paid more attention to the ground than usual, thus increasing his probability of finding change.\nTo turn this into a scientific proposition, it must be rephrased: people who pray in a specified manner have a significantly higher probability of finding money on a specified route at a specified time than people who do not pray.\nThen, one would conduct a randomized controlled trial with a sufficiently large sample size, pre-determined criteria for success, and have the experiment repeated by different researchers.\nOnly if the prayer group consistently shows a stable difference across many experiments, and the results can be repeatedly reproduced by other researchers, have we truly discovered a phenomenon that needs explaining.\nScience does not reject a phenomenon in advance just because it involves \u0026ldquo;God.\u0026rdquo;\nWhat science rejects is the packaging of a single coincidence as a universal law.\nVI. Why Is a Personal God Not a Scientific Explanation? The gods in most religions have distinct personal characteristics: they can love, get angry, judge, bless, and punish.\nSince God is said to influence nature and human life, this influence must produce testable real-world consequences.\nHowever, theology often forms a closed loop that can never fail: if a prayer succeeds, God has answered; if it fails, God has other plans; if you suffer a disaster, God is testing you; if nothing happens, it is because God is invisible.\nThus, any outcome can be used to prove God\u0026rsquo;s existence.\nBut a theory that can explain all outcomes, in fact, explains nothing.\nWhen no outcome can truly serve as a referee, it exits the realm of science.\nSimilarly, some say: \u0026ldquo;The universe was created by God, the laws of physics were established by God, and the Big Bang was initiated by God.\u0026rdquo; Whatever science discovers, one can always add at the end: \u0026ldquo;This too was designed by God.\u0026rdquo;\nHowever, adding this sentence introduces no new predictions, changes no experimental results, and does not explain what phenomena would not occur if God did not exist.\nIt merely adds an untestable cause with no predictive power on top of a natural explanation.\nA theory that claims to explain reality but cannot accept empirical testing is not profound, but empty.\nIf one further defines God as having no personality, no will, not responding to prayers, and never intervening in any natural process, then such a God is observationally indistinguishable from \u0026ldquo;non-existent.\u0026rdquo;\nAssuming it exists, the world operates this way; assuming it doesn\u0026rsquo;t exist, the world still operates this way.\nIt is no longer a natural explanation, but merely a renaming of \u0026ldquo;the universe,\u0026rdquo; \u0026ldquo;the laws of nature,\u0026rdquo; or \u0026ldquo;existence itself.\u0026rdquo;\nVII. Why Is Newtonian Mechanics Still Science Even Though It Was Revised? Some might ask: since scientific theories must be tested against reality, and Newtonian mechanics was later revised by relativity, does that mean Newtonian mechanics is not scientific? Not at all.\nA mature scientific theory is not simply \u0026ldquo;absolutely correct\u0026rdquo; or \u0026ldquo;completely wrong.\u0026rdquo;\nNewtonian mechanics can describe the motion of objects with extreme accuracy at low speeds, in weak gravitational fields, and for ordinary engineering purposes.\nHow cars drive, how cannonballs move, how bridges bear loads, how machines operate—a vast number of real-world problems can be stably calculated using Newtonian mechanics.\nWe don\u0026rsquo;t need to apply relativistic corrections every time we calculate the motion of an ordinary car.\nThis is not because we knowingly use a wrong conclusion for convenience, but because under these conditions, the relativistic correction is far smaller than the required precision.\nWhen an object\u0026rsquo;s speed approaches the speed of light, special relativity is needed; when strong gravity and significant spacetime curvature are involved, general relativity is needed.\nWhat was revised was not the effectiveness of Newtonian mechanics within its low-speed domain, but the overextended claim that \u0026ldquo;Newtonian mechanics is absolutely precise under all conditions.\u0026rdquo;\nNewtonian mechanics is science precisely because it can: perform quantitative calculations; be repeatedly tested; specify its errors; define its scope of applicability; and indicate where it begins to fail.\nTrue science doesn\u0026rsquo;t just say, \u0026ldquo;I am always right.\u0026rdquo; It honestly tells you: under what conditions I am correct, to what degree of accuracy, and where my boundaries lie.\nThis also shows that the absence of ultimate truth in science does not mean science is wrong.\nScience is the most reliable description of reality we currently have, valid within well-defined boundaries.\nWhen a new theory emerges, the old one often doesn\u0026rsquo;t disappear entirely but is placed within a more accurately defined scope of applicability.\nVIII. A True Prediction Must Meet Three Conditions Many people believe that as long as a result can eventually be calculated, it means the future is predictable.\nThis view overlooks the most basic conditions for prediction.\nA scientifically meaningful prediction must satisfy at least three points.\nFirst, the prediction must be fixed in advance. The content of the prediction must be recorded before the event occurs and cannot be modified after the result is known.\nIt can be made public, or it can be encrypted, sealed, or entrusted to an independent third party.\nThe key is not that everyone sees it immediately, but that an unalterable record exists.\nSecond, the prediction must be independently verifiable. After the event occurs, others must be able to compare the original prediction with the actual result.\nIf someone just says, \u0026ldquo;I knew it all along,\u0026rdquo; but cannot produce a pre-fixed record, it\u0026rsquo;s not a prediction, just a post-hoc claim.\nThird, the calculation must be completed before the event occurs. Suppose we want to predict the state of a system one hundred years from now, but the calculation itself takes at least one hundred years to complete. Even if the final calculation is correct, it has no predictive value.\nThe computer is merely running in sync with the system, not obtaining the future in advance.\nIf expressed symbolically, a true prediction must satisfy: T_computation \u0026lt; T_event\nWhere \u0026ldquo;T_computation\u0026rdquo; is the minimum physical time required to obtain the prediction result, and \u0026ldquo;T_event\u0026rdquo; is the time difference between the present moment and the occurrence of the target event.\nIf the time required for calculation exceeds the waiting time for the event, the prediction loses its practical meaning.\nIf the calculation result always arrives later than reality, it is not a prediction, but a post-hoc reenactment.\nIX. Theoretically Computable Does Not Equal Physically Predictable Just because a system has clear laws of evolution does not mean its future can be calculated in advance by a real-world computer.\nAll real computations require time, energy, storage space, and information transfer.\nA computer itself is a physical system and cannot escape the laws of physics.\nPhysicist Seth Lloyd estimated that the total number of elementary operations the observable universe could have performed since its birth is on the order of 10^120, and the amount of information it can register is on the order of 10^90 bits.\nThese numbers depend on specific physical and cosmological assumptions, but they illustrate a fundamental fact: the computational resources provided by the universe are finite.\nIf a prediction task requires an amount of information, number of calculations, or completion time that exceeds the physical limits the universe can provide, then even if it can be run step-by-step in abstract mathematics, the prediction cannot be completed in reality.\nFurthermore, increasing computing power does not guarantee the solution to all prediction problems.\nIn 1990, Cristopher Moore proved that it is possible to construct continuous dynamical systems with as few as three degrees of freedom whose motion is equivalent to universal computation.\nFor such systems, even if the initial conditions are given precisely, certain questions about their long-term evolution are undecidable.\nThis does not mean that all systems with three degrees of freedom are unpredictable, but it shows that undecidability can appear even in rule-defined dynamical systems with very few degrees of freedom.\nThis result refutes an overly simplistic notion: that as long as the laws of nature are clear and a computer is given enough resources, it can surely calculate everyone\u0026rsquo;s future in advance.\nThis is not the case.\nHaving rules does not mean a predictive shortcut exists; being theoretically evolvable does not mean it can be completed in advance; and having deterministic rules does not mean all long-term questions have a feasible algorithm.\nX. A Thought Experiment on Predicting Human Behavior Suppose someone claims: \u0026ldquo;I can accurately predict whether you will choose A or B at 10 a.m. tomorrow.\u0026rdquo;\nAccording to scientific standards, they must first fix their prediction.\nIf they tell the prediction directly to the subject, the subject can adopt a very simple rule: if you predict I\u0026rsquo;ll choose A, I\u0026rsquo;ll choose B; if you predict B, I\u0026rsquo;ll choose A.\nThis shows that for a subject who can understand the prediction and change their behavior based on it, the prediction itself becomes a new input to the system.\nA stone will not change its trajectory because you predict it; a person will.\nThe counterargument might be: \u0026ldquo;Then I won\u0026rsquo;t tell you the prediction, I\u0026rsquo;ll just seal it and give it to a third party.\u0026rdquo; This does prevent the subject from deliberately doing the opposite, but the prediction must still face empirical testing.\nWe can strengthen the thought experiment further.\nSuppose the person pre-specifies: \u0026ldquo;At 10 a.m. tomorrow, my action will be determined by a quantum random bit generated at that exact moment. If the result is 0, I choose A; if it\u0026rsquo;s 1, I choose B.\u0026rdquo;\nThe predictor must encrypt, seal, and deliver their prediction to an independent third party before the random bit is generated.\nThe next day, the random bit is read on-site, the corresponding action is performed, and finally, the prediction record is opened for comparison.\nModern Bell experiments have already ruled out local hidden-variable theories. Furthermore, experiments based on the violation of Bell\u0026rsquo;s inequality can, under clear assumptions, certify randomness, producing random outputs that cannot be known in advance by the predictor.\nAt this point, the predictor can no longer explain failure by saying, \u0026ldquo;You knew the prediction and deliberately changed your behavior,\u0026rdquo; because the subject did not know the random outcome in advance. The predictor also cannot change their answer after the fact, because the prediction was fixed by a third party.\nIf the predictor still claims they can be accurate every time, the experiment is very clear: repeat it enough times and check if their success rate significantly exceeds the probability level given by quantum theory.\nIf the predictions succeed, it becomes significant evidence that needs a new explanation; if they fail, their claim of deterministic prediction is not supported.\nThis thought experiment does not require that all human behavior depends on quantum randomness.\nIt only needs to construct a class of well-defined actions: human action can be actively tied to a physical process that, within the current scientific framework, can only provide probabilities, not a definite single outcome in advance.\nThus, the absolute proposition that \u0026ldquo;every single human action can be precisely predicted in advance\u0026rdquo; is no longer tenable.\nXI. Quantum Processes Are Not Mysterious Stories, but Objects of Experimental Study Quantum randomness is not an untestable philosophical slogan.\nBell\u0026rsquo;s inequality experiments can test whether quantum correlations conform to local realistic models. Randomness certification based on Bell violations can turn \u0026ldquo;unpredictability\u0026rdquo; into a repeatable, statistically verifiable experimental conclusion.\nThis suggests that the probabilistic nature of quantum mechanics is not due to our \u0026ldquo;lack of information (hidden variables),\u0026rdquo; but is an intrinsic randomness of nature.\nModern experiments can even track the intermediate processes of a quantum jump in real time.\nIn 2019, Minev et al. continuously monitored a superconducting artificial atom, catching and reversing a quantum jump in progress.\nThe experiment showed that the evolution of a jump that has started and will eventually complete can be continuous, coherent, and trackable.\nThis experiment does not single-handedly settle all interpretations of quantum mechanics, but it demonstrates that so-called quantum jumps are not mysterious events to be discussed only in imagination, but physical processes that can be observed, monitored, intervened in, and studied repeatedly.\nAccording to the standards established in this article, within the scope of current evidence, the probabilistic description of standard quantum mechanics—usually expressed in the operational language of the Copenhagen interpretation—directly corresponds to repeatable experiments and can provide precise statistical predictions.\nIf a deterministic interpretation claims that all single outcomes are in fact predetermined, but cannot propose new predictions that differ from standard quantum theory, nor design independent experiments to test itself, then it cannot scientifically replace the empirically tested probabilistic description.\nWithin the current evidence and precision, the probabilistic description that directly corresponds to experiments and can be repeatedly verified is the scientific explanation that is currently closer to natural reality.\nThis is not to say that a more complete theory will never emerge in the future.\nJust as Newtonian mechanics is not the ultimate truth but is extremely reliable within its own domain, standard quantum theory can be the most reliable description today while remaining open to future testing and revision.\nXII. Why Is a Person\u0026rsquo;s Future Harder to Predict Than a Simple Mechanical System? The human brain is not an isolated, closed, and fixed-boundary mechanical device.\nA person continuously receives new information, recalls the past, revises judgments, changes goals, and may also choose new behaviors based on others\u0026rsquo; predictions about them.\nA person\u0026rsquo;s future depends not only on their current brain state but is also influenced by future encounters, information seen, bodily changes, diseases, social events, environmental changes, and countless feedback processes.\nMore importantly, the prediction itself can enter the system.\nIf a prediction is known to a person, it will change their thinking. Even if the prediction is not known to the person, it must be fixed in advance and subjected to independent testing. If human behavior is further tied to a certifiable quantum random result, then a deterministic single-event prediction becomes a claim whose success or failure can be directly tested.\nThe obstacles to predicting complex systems are not caused by a single factor but by a combination of limitations: initial states cannot be measured with infinite precision; small errors can be amplified by non-linear feedback; the system constantly receives new external information; the prediction can in turn change the system; computation is limited by time, energy, and storage; and some dynamical systems even have mathematically undecidable problems.\nTherefore, a person\u0026rsquo;s long-term future is not a script that can be read in its entirety in advance.\nIn a scientific sense, a system has operational determinism only if it can be stably predicted in advance under specified conditions, precision, and timeframes.\nA \u0026ldquo;hidden determinism\u0026rdquo; that cannot produce a verifiable prediction before an event occurs is not a scientific conclusion, but an untestable metaphysical assumption.\nXIII. Why Is Fatalism an Incorrect Description of Nature? Fatalism holds that a person\u0026rsquo;s life is already destined.\nMechanical determinism, on the other hand, imagines that if one knows the complete state of the universe at a single moment and all its laws, the future is entirely contained within the past.\nThe two are not identical, but fatalism often borrows from mechanical determinism to cloak the idea that \u0026ldquo;a person\u0026rsquo;s life is already written\u0026rdquo; in a seemingly scientific guise.\nFatalism usually has a \u0026ldquo;teleological\u0026rdquo; flavor (i.e., the endpoint is inevitable, regardless of the path taken), whereas mechanical determinism only speaks of \u0026ldquo;causality\u0026rdquo; (evolution from initial conditions and equations).\nComplex systems and computational limits destroy the foundations of both.\nThe problem is, this claim cannot answer the most basic questions: What are the variables that determine an individual\u0026rsquo;s fate? What is the evolutionary formula? How much information is needed? What is the prediction accuracy? How far in advance can it be predicted? What result would prove fatalism wrong?\nFatalism can usually only explain the result after it has happened: if you work hard and succeed, it was destined; if you give up and fail, that too was destined; if you hear about fatalism and decide to resist, your resistance was also destined.\nA theory that can accommodate all outcomes has not truly undergone any test.\nIt provides no new information, nor does it make a prediction that risks failure; it merely re-labels everything that has already happened as \u0026ldquo;fate.\u0026rdquo;\nOf course, human behavior is influenced by genetics, environment, education, experience, and brain activity.\nBut: that behavior has causes does not mean life is a single path that has already been written and can be read in advance.\nModern mathematics has proven that rule-defined dynamical systems can contain undecidable long-term problems; physics shows that any real computation is limited by the universe\u0026rsquo;s resources and time; and quantum experiments provide physical processes that can only be described probabilistically and whose unpredictability can be certified.\nTogether, this evidence refutes a simple and absolute fantasy: that as long as the universe has causal laws, a sufficiently powerful computer can surely calculate every person\u0026rsquo;s life in advance.\nThis is not the conclusion of modern science.\nFatalism can neither provide an operational model nor form a verifiable prediction; and when it fails, it can explain the failure itself as being destined.\nTherefore, under the scientific standards established in this article: fatalism is not a valid scientific description of the natural world, but an erroneous explanation arising from the infinite extension of causality.\nXIV. The True Boundary of Science Now, we can offer a more complete definition of science: Science is the most reliable and closest description of the natural world we currently have, established through public testing, repeated experiments or independent evidence, within specified conditions, timeframes, precision, and error margins.\nIt must allow reality to support, limit, revise, or negate it, and must never interpret all possible outcomes as confirmation of its own correctness.\nEach of these components is indispensable.\nTestability is the ticket to enter scientific inquiry; repeatability and independent verification are the foundation for building public knowledge and eliminating personal delusion; specified conditions, scope, and error are the honest boundaries of science; predictions must be fixed in advance and completed before the event; and tests must allow for failure, otherwise, the test is merely a performance.\nMathematics establishes necessity through logical proof within given premises.\nNatural science establishes empirical reliability about the real world through observation, experiment, measurement, and prediction.\nA personal god claims to intervene in reality but cannot provide stable, clear, and verifiable results, and is therefore not a scientific explanation.\nNewtonian mechanics can be calculated, tested, and specifies its scope and errors, so even though it is not an ultimate theory, it is still science.\nThe prediction of complex systems is limited by initial information, feedback, algorithms, time, and physical resources; human behavior can also react to the prediction itself and be actively tied to certifiable quantum random events.\nTherefore, a person\u0026rsquo;s long-term future cannot be treated as a pre-written script that can be deterministically read.\nScience never relies on the assertion of an authority, does not depend on how many advanced formulas are used, nor on being cloaked in a sophisticated philosophical or religious guise.\nScience ultimately has only one referee: reality.\nIf reality consistently supports a theory, it can temporarily become reliable knowledge.\nIf reality shows it is valid only in a limited range, it must acknowledge its boundaries.\nIf reality consistently refutes it, it must be revised or retired.\nScience is not ultimate truth.\nBut for understanding the natural world, humanity has yet to find a method more reliable and closer to the truth than science.\nAnd a theory that refuses empirical testing, yet claims to explain everything, is nothing more than empty and erroneous soliloquy, no matter how profound it may sound.\n","permalink":"https://www.houdao.org/en/using-the-definition-of-science-to-argue-against-fatalism-and-a-personal-god/","summary":"\u003cp\u003e\u003cstrong\u003eA Discussion on the Boundaries of Science, Complex Systems, and Empirical Testing\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003eFatalism holds that a person\u0026rsquo;s life is already written; the belief in a personal god posits the existence of a deity with will and emotions who responds to prayers, rewards good deeds, and punishes blasphemy.\u003c/p\u003e\n\u003cp\u003eThese two claims, though seemingly from different domains, share the same logical structure: they both claim to explain reality but fail to offer clear, stable, and repeatedly verifiable predictions about it.\u003c/p\u003e","title":"Using the Definition of Science to Argue Against Fatalism and a Personal God"},{"content":"After raising a child in Spain for three years, my deepest realization is this: the education system here isn\u0026rsquo;t designed to \u0026lsquo;push\u0026rsquo; children, but to \u0026lsquo;sift\u0026rsquo; them. It provides a \u0026lsquo;safety net of connections\u0026rsquo; for local elites, while for immigrant families, it\u0026rsquo;s a \u0026rsquo;tightrope walk of pure ability.\u0026rsquo;\n1. A Shift in Responsibility: From \u0026lsquo;Teacher-Managed\u0026rsquo; to \u0026lsquo;Family-Supplemented\u0026rsquo; This is the most fundamental difference between Chinese and Spanish education. In Spain, the pressure of education shifts entirely from the school to the family.\nLimitations of School Education: School days in Spain are extremely short (typically 9:30 AM to 4:30 PM). After subtracting lunch and breaks, the effective academic time is very limited. A Management Vacuum: There are no homeroom teachers here like in China who \u0026lsquo;revolve around the students.\u0026rsquo; Teachers are only responsible for teaching, their absenteeism rates are generally high, and teaching continuity can be poor. Teachers rarely chase students for missing homework or to improve their grades. It\u0026rsquo;s All Up to Self-Discipline: In this system, whether a student learns or keeps up is considered their own business. If a child lacks self-discipline and the parents fail to \u0026lsquo;step in\u0026rsquo; and manage their progress, the child can easily and quietly fall behind in this relaxed environment. 2. The Truth About the Grading System: The \u0026lsquo;Gray Area\u0026rsquo; Between 9.5 and 10 Meeting the Threshold: Spanish secondary schools use a 0-10 point system, and a score of 9.5 is often rounded up to 10. The system doesn\u0026rsquo;t encourage intense competition for that last 0.5 point, which relieves pressure but also weakens the external push for top-tier academic excellence. 3. The Golden Window at Age 2: The Prime Time for Language and Social Benefits If you decide to bring your child to Spain, enrolling them in kindergarten (Guardería) at age 2 is the most cost-effective choice.\nNative-like Acquisition: Age 2 is a period of explosive language development in the brain, allowing Spanish and English to be internalized as naturally as a native language. An Overwhelming Advantage: Starting at age 2 gives a child an absolute edge in pronunciation, language intuition, and cross-cultural social skills, helping them avoid the sense of cultural isolation that can occur when joining at an older age. 4. Absolute Advantages: Sports Prowess, Multilingual Benefits, and the \u0026lsquo;Fast Track to Top Universities\u0026rsquo; Spain offers incredibly solid resources for families who plan ahead:\nThree Ace Sports: Spain is a global cradle for football, tennis, and basketball. The well-established club system transforms sports from a mere hobby into a professional pathway that can become a core competitive strength. The Overseas Chinese Joint Entrance Exam (The Ace in the Hole): After meeting the residency requirements, children can take a special entrance exam for overseas Chinese students. Compared to the domestic Gaokao, this exam is less difficult and less competitive, serving as a shortcut back to top 985/211 universities in China. 5. Beware the \u0026lsquo;Happiness Trap\u0026rsquo;: The Invisible Stratification of the Elite As immigrants, we must see through the class-based reality behind the locals\u0026rsquo; \u0026rsquo;non-anxious\u0026rsquo; attitude:\nInvisible Tutoring: The local elite class is by no means completely \u0026lsquo;zen.\u0026rsquo; They supplement their children\u0026rsquo;s education with a large number of private tutoring sessions for both academics and skills. Different Margins for Error: Local children with average academic performance can often still \u0026lsquo;follow in their parents\u0026rsquo; footsteps,\u0026rsquo; relying on family networks and inherited resources to secure a stable future. The Immigrant\u0026rsquo;s Realization: Immigrant families lack this background and these resources. Our only chip is our child\u0026rsquo;s own ability. When a teacher praises your child for being \u0026lsquo;happy,\u0026rsquo; parents must remain clear-headed: we need to leverage the language and sports advantages here, but we absolutely cannot afford a completely hands-off approach to their management. Conclusion: Can Your Family Handle This System? The core truth of Spanish education is this: the school only provides a \u0026lsquo;relaxed\u0026rsquo; platform. How high a child ultimately flies depends entirely on the family\u0026rsquo;s effort to \u0026lsquo;fill the gaps.\u0026rsquo;\nThe Strategist: Start at age 2, leverage language and sports advantages, and keep the Overseas Chinese Joint Entrance Exam as a backup plan. The Specialist: Target professional development in football, tennis, or basketball. The Sober-minded: Enjoy the sunshine and freedom here, but ensure the parents play the role of the \u0026lsquo;invisible driving force.\u0026rsquo; There is no absolute good or bad in education, only different costs. Spain gives children a strong physique and multilingual abilities. But to transform this freedom into a competitive advantage for survival, the parents must be the \u0026lsquo;sober helmsman.\u0026rsquo;\n","permalink":"https://www.houdao.org/en/three-years-of-raising-a-child-in-spain-a-happy-paradise-or-a-laissez-faire-trap/","summary":"\u003cp\u003eAfter raising a child in Spain for three years, my deepest realization is this: the education system here isn\u0026rsquo;t designed to \u0026lsquo;push\u0026rsquo; children, but to \u0026lsquo;sift\u0026rsquo; them. It provides a \u0026lsquo;safety net of connections\u0026rsquo; for local elites, while for immigrant families, it\u0026rsquo;s a \u0026rsquo;tightrope walk of pure ability.\u0026rsquo;\u003c/p\u003e\n\u003ch2 id=\"1-a-shift-in-responsibility-from-teacher-managed-to-family-supplemented\"\u003e1. A Shift in Responsibility: From \u0026lsquo;Teacher-Managed\u0026rsquo; to \u0026lsquo;Family-Supplemented\u0026rsquo;\u003c/h2\u003e\n\u003cp\u003eThis is the most fundamental difference between Chinese and Spanish education. In Spain, the pressure of education shifts entirely from the school to the family.\u003c/p\u003e","title":"Three Years of Raising a Child in Spain: A 'Happy Paradise' or a 'Laissez-faire Trap'?"},{"content":"Why Choose the Spanish Non-Lucrative Visa? Core Advantages:\nExtremely Low Application Threshold\nThe overall difficulty is comparable to applying for a regular tourist visa on your own. You only need to provide stable financial proof to demonstrate that you and your family have the economic means to live in Spain long-term without working.\nRelatively Short Approval Period\nTypically, you will receive a decision within 1–3 months after submitting all required documents, which is more efficient than other European long-term residency programs.\nExtremely Low DIY Cost\nThe entire process can be handled by yourself, achieving almost \u0026ldquo;zero agency fees.\u0026rdquo; You only need to cover necessary costs like translation and notarization, avoiding exorbitant fees from agents.\nHigh-Quality Social Environment\nSpain is a developed European country with a comprehensive social security system:\nUniversal free healthcare Free public education (with extremely low university tuition fees) Free public transportation for specific groups in some cities Social stability and a pace of life suitable for long-term family residence Quickly Obtain a Second Identity\nUpon arrival in Spain, you can apply for an NIE (Foreigner\u0026rsquo;s Identity Number), which has a wide range of uses:\nOpening bank accounts Booking flights and checking into hotels Registering a company and signing contracts Its functions are very similar to an EU ID card (with some exceptions for benefits) Rational Advice on the Investor Visa It is strongly advised against blindly opting for the former €500,000 Investor Visa (this policy has been canceled).\nMany Chinese applicants, unfamiliar with the local market, were misled by agents into buying overpriced properties:\nA property quoted at €500,000 by an agent might have a real market value of only €200,000. In Spain, properties with \u0026ldquo;tens of thousands of square meters of land + a thousand square meters of building\u0026rdquo; for under €400,000 are common. A more prudent path is:\nFirst, land in Spain with a non-lucrative visa → Consider buying property after familiarizing yourself with the market → Switch to an investor-type residency if needed.\nTo avoid pitfalls when buying property, refer to: Complete Guide to Buying Resale Property in Spain\nCosts and Long-Term Planning Total costs for translation, notarization, travel, etc.: a few thousand RMB Maximum time outside Spain within 5 years: 10 months Must reside in Spain for no less than 183 days in a single year After 5 years: Eligible to apply for Spanish or EU permanent residency After obtaining permanent residency: Entering Spain once a year is sufficient After 10 years + passing a basic Spanish language test: Eligible to apply for Spanish citizenship Official policy information (Spanish Ministry of Foreign Affairs):\nhttps://www.exteriores.gob.es/Consulados/pekin/zh/ServiciosConsulares/Paginas/Consular/Visado-de-residencia-no-lucrativa.aspx\nNote: The above is a general legal framework. There may be slight differences in the actual review process at different consulates.\nChoosing the Right Consulate for Submission The main applicant must choose the consulate based on their household registration (hukou) location. Those already overseas can apply at the local Spanish consulate:\nConsulate in Chengdu (newly established in 2023): Sichuan Province Consulate General in Shanghai: Shanghai, Anhui, Jiangsu, Jiangxi, Zhejiang Consulate General in Guangzhou: Fujian, Guangdong, Guizhou, Hainan, Hunan, Yunnan, Guangxi Consulate General in Beijing: Covers the widest area, including many northern and western provinces and cities. Experience shows: The Beijing consular district has relatively simpler requirements, while the Shanghai district is the strictest with documents.\nFor inquiries, please use Spanish or English:\nBeijing: cog.pekin@maec.es Guangzhou: cog.canton@maec.es Hong Kong: cog.hongkong@maec.es Shanghai: Cg.Shanghai@maec.es Practical Tips Driver\u0026rsquo;s License Issue\nThe Spanish driver\u0026rsquo;s license is extremely difficult to obtain, and it cannot be exchanged for a Chinese driver\u0026rsquo;s license. An Ecuadorian driver\u0026rsquo;s license can be exchanged for a Spanish one. Recommendation: Obtain an exchangeable license first → Then enter Spain. Translation and Notarization\nAll documents must be translated into Spanish. You can get this done on Taobao: Translation + Notarization + Hague Apostille. The criminal record check can be processed online. Financial Requirements (Key) The financial standard is based on the IPREM:\nInitial application: Main applicant 4 times the IPREM For each additional family member: +1 time the IPREM Renewal: Main applicant 8 times the IPREM, +2 times for each family member 2025 IPREM: €7,200 Proof of funds from banks in China or abroad are both acceptable.\nForm Downloads National Visa Application Form (Chinese version)\nhttps://www.exteriores.gob.es/Consulados/canton/es/ServiciosConsulares/Documents/nacional-es-cn.pdf 790-052\nhttps://www.exteriores.gob.es/Consulados/londres/en/ServiciosConsulares/Documents/Formulario%20790-052.pdf EX01\nhttps://www.inclusion.gob.es/documents/410169/2156469/01-Formulario_residencia_no_lucrativa.pdf If you have trouble filling them out, you can ask a Spanish translator for help.\nMain Applicant\u0026rsquo;s Documents Full copy of new passport (including blank pages) Full copy of old passport Full copy of Hukou (household registration book) + translation Criminal record check (translated + notarized + apostilled) Marriage certificate (same as above) Consulate appointment email Application form + photo 790-052 EX-01 One-year bank statements (translated) Proof of deposit (translated + notarized + apostilled) Property ownership certificate (not mandatory) Rental contract (required by some consulates) Social security certificate (not mandatory) Tax payment certificate (not mandatory) Property sale documents (not mandatory) Medical examination report Proof of accommodation in Spain One-year medical insurance Spouse\u0026rsquo;s Documents Full copies of new and old passports Hukou Criminal record check Marriage certificate Application form 790 EX-01 Medical examination Medical insurance Child\u0026rsquo;s Documents New and old passports Hukou Birth certificate Application form 790 EX-01 Medical examination Medical insurance Proof of school enrollment School offer letter from Spain (required by some consulates) ","permalink":"https://www.houdao.org/en/spain-non-lucrative-visa-diy-application-guide-checklist-and-form-instructions/","summary":"\u003ch2 id=\"why-choose-the-spanish-non-lucrative-visa\"\u003eWhy Choose the Spanish Non-Lucrative Visa?\u003c/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCore Advantages:\u003c/strong\u003e\u003c/p\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eExtremely Low Application Threshold\u003c/strong\u003e\u003cbr\u003e\nThe overall difficulty is comparable to applying for a regular tourist visa on your own. You only need to provide stable financial proof to demonstrate that you and your family have the economic means to live in Spain long-term without working.\u003c/p\u003e\n\u003c/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRelatively Short Approval Period\u003c/strong\u003e\u003cbr\u003e\nTypically, you will receive a decision within \u003cstrong\u003e1–3 months\u003c/strong\u003e after submitting all required documents, which is more efficient than other European long-term residency programs.\u003c/p\u003e","title":"Spain Non-Lucrative Visa DIY Application Guide: Checklist and Form Instructions"},{"content":"1. Using idealista for Free Queries: Valuation, Cadastre, Historical Price Curve, and Local Amenities Visit:\nhttps://www.idealista.com/zh/maps/\n1) Search by Address Enter the property\u0026rsquo;s address to begin your search.\n2) Select the House Number 3) View Basic Property Information and Valuation This will display the property\u0026rsquo;s:\nArea Year of construction Estimated sale price Estimated rental price 4) Scroll Down for Cadastral Information and Building Structure Continue scrolling down to find a link to download cadastral information and details about the building\u0026rsquo;s structure.\n5) Nota Simple (Crucial) The cadastral information, or nota simple, includes:\nTransaction history Information on whether there are mortgages, etc. 6) Local Information: Transport, Education, Healthcare, Shopping Information on nearby transport and education.\nHealthcare and shopping facilities near the property.\n7) Price Report: Historical Transaction Price Curve Click on the price report to see the historical transaction prices for the area.\nYou can see that property price fluctuations in Spain are very small:\nThis example shows villa prices: villas are almost exclusively for self-occupancy and have little investment value. Apartment prices in Spain have seen greater increases: apartments offer a higher return on investment. 2. Market and Settlement Assessment: Rental Yield, Regional Climate, and City Selection The rental yield for properties in popular Spanish cities is around 7%, and there is a high demand for low-rent properties. Affordable apartments in convenient locations have better investment value. Differences Between Spanish Regions (Climate/Prices/Environment) Northern Spain (bordering France, facing the Atlantic Ocean)\nHumid climate, lush vegetation Cool summers, cold winters High cost of living Clean cities Scenery similar to Switzerland Central and Southern Spain\nDry climate, sparse vegetation Dusty during high winds Hot summers Relatively lower cost of living From the perspective of transportation convenience, suitable climate, economic development, and vibrancy:\nBarcelona is the most suitable region in Spain for settling down.\n3. Tips (Very Practical, Recommended to Follow Step-by-Step) The southern and central regions of Spain are semi-arid. During heavy rainfall, there\u0026rsquo;s a high risk of flooding, and flood disasters occur almost annually. Therefore, when choosing a house in the central and southern regions, try to select areas that are densely populated and on higher ground. When viewing a house, check the basement for any signs of past flooding.\nThe real estate agent\u0026rsquo;s commission is typically 3% of the property price. If the price exceeds €200,000, this is generally negotiable.\nBefore making an offer, you must carefully review the nota simple (cadastral information) to avoid purchasing a property with an outstanding mortgage or complex ownership issues.\nIf you are bold and meticulous, you can use the photos on property websites to track down the property and knock on the door to contact the owner directly. This can save a significant amount in agent fees, but not every owner is willing to bypass their agent.\nThe property transfer tax is approximately 10% of the property price. You must pay this tax yourself at the bank. Do not transfer the tax money directly to the agent for them to pay on your behalf. Having an agent handle the tax payment is very risky.\nThe property transaction process is relatively simple, and it\u0026rsquo;s not always necessary to hire a lawyer. Chinese lawyers generally charge around 1%, while Spanish lawyers are cheaper, and you can negotiate a fee of a few hundred euros per consultation. You can also use translation software to translate the contract yourself or hire an experienced translator to help review it.\nThe most important part of the property transaction is the notarization of the entire process at a notary\u0026rsquo;s office. Therefore, you must verify the credentials of the notary to ensure they are a legally licensed professional. All legal notaries in Spain must be registered with the Spanish General Council of Notaries (Consejo General del Notariado - CGN). You can find a directory of legal notaries by visiting https://www.notariado.org/.\nOn the idealista property website, you can freely check a property\u0026rsquo;s cadastral information, estimated sale price, average prices of nearby properties, historical transaction price curves, and information on surrounding amenities. Use idealista for free cadastral information checks.\nSpanish property prices are stable, and a house\u0026rsquo;s value is mainly reflected in its construction cost. The construction costs for new homes today are much higher than those from one or two decades ago, as labor and building material prices have risen sharply. Consequently, new homes are much more expensive than older ones, often more than double the price. Furthermore, the building materials and methods used in new constructions are not as sturdy as those used in houses built around the year 2000. Therefore, choosing a second-hand house from around the year 2000 is the most cost-effective option. In Spain, very few people buy new homes or build their own.\nThe EU has strict anti-money laundering policies, and the source of funds for purchasing a new home is subject to very rigorous checks.\n4. The General Process for a Second-Hand Property Transaction in Spain (A Complete Step-by-Step Guide) Filter properties on second-hand housing websites.\nContact an agent for viewings.\nSign a viewing agreement.\n(Note: Before signing, confirm the terms of the agreement, such as exclusivity clauses, agent fees, etc. If you do not agree with them, refuse to sign.)\nAfter showing interest: Pay a reservation deposit (usually proposed by the agent).\nThe agent will typically ask the buyer to pay a reservation deposit, the amount of which is usually specified in the agency agreement.\nThe contract will generally stipulate that:\nIf a contract is reached with the seller at the buyer\u0026rsquo;s proposed price, the reservation deposit will automatically be converted into the agent\u0026rsquo;s fee. If an agreement cannot be reached with the seller, the reservation deposit will be fully refunded within one week.\nThese terms are negotiable and not standard. Sign the purchase contract with the seller (ensure key clauses are clearly stated).\nThe contract generally includes: Total property price Deposit amount Notarization date Final payment date Handover date A deposit, typically around 10% of the property price, is usually paid to the seller upon signing the contract.\nSpanish banks often have a daily transfer limit of €50,000. Be sure to arrange for temporary authorization for a large transfer with your bank manager in advance, or issue a bank check. The payment method for the deposit needs to be confirmed with the landlord to avoid disputes.\nNotarization (The most critical step: on-site settlement, check, and identity verification).\nDuring notarization, check that the notary\u0026rsquo;s information is listed on the official website of the Spanish General Council of Notaries and that they are qualified to handle property transactions.\nThe final payment is usually made by bank check: Exchange the check for the house keys.\nThis is witnessed by the notary on-site. The bank check needs to be requested from your bank in advance.\nPay attention to the name of the check\u0026rsquo;s recipient; confirm this with the seller beforehand.\nUpdating property registration information after the transaction (can usually be handled by an agent).\nThe agent or the notary\u0026rsquo;s office will usually handle the update of the property registration information after the transaction. The fee is not high, around €200, and the process takes about 2 months.\nIt is recommended to opt for this service. After the property information is updated, you will receive notifications via email and SMS from the government.\nPaying the property transfer tax (to reiterate: do not let the agent pay it for you).\nThe property transfer tax is generally 10% of the property price:\nDo not let the agent pay it on your behalf, as this can easily lead to problems.\nThe correct procedure is: have the agent give you the property transfer tax payment form, and then go to the bank to pay it yourself.\nAfter the bank stamps the form, give it back to the agent to use for updating the property registration.\nSettling fees and transferring utilities (water, electricity, gas, community fees, waste disposal, property tax, etc.).\nThe settlement and transfer of fees for water, electricity, gas, community fees, waste disposal, and property tax usually require the cooperation of the owner or can be handled by the agent.\nProperty tax is paid annually. The property tax in Spain is very low, approximately 0.3% of the property value per year, with slight variations between regions.\n","permalink":"https://www.houdao.org/en/a-complete-guide-to-buying-second-hand-property-in-spain-using-idealista-for-cadastral-checks-nota-simple-and-avoiding-pitfalls-in-notarization-and-transfer/","summary":"\u003ch2 id=\"1-using-idealista-for-free-queries-valuation-cadastre-historical-price-curve-and-local-amenities\"\u003e1. Using idealista for Free Queries: Valuation, Cadastre, Historical Price Curve, and Local Amenities\u003c/h2\u003e\n\u003cp\u003eVisit:\u003cbr\u003e\n\u003ca href=\"https://www.idealista.com/zh/maps/\"\u003ehttps://www.idealista.com/zh/maps/\u003c/a\u003e\u003c/p\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" src=\"/images/wechat/e9c32a80f37a.png\"\u003e\u003c/p\u003e\n\u003ch3 id=\"1-search-by-address\"\u003e1) Search by Address\u003c/h3\u003e\n\u003cp\u003eEnter the property\u0026rsquo;s address to begin your search.\u003c/p\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" src=\"/images/wechat/b5ce0b8c3ddd.png\"\u003e\u003c/p\u003e\n\u003ch3 id=\"2-select-the-house-number\"\u003e2) Select the House Number\u003c/h3\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" src=\"/images/wechat/dde2f168ef0c.png\"\u003e\u003c/p\u003e\n\u003ch3 id=\"3-view-basic-property-information-and-valuation\"\u003e3) View Basic Property Information and Valuation\u003c/h3\u003e\n\u003cp\u003eThis will display the property\u0026rsquo;s:\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003eArea\u003c/li\u003e\n\u003cli\u003eYear of construction\u003c/li\u003e\n\u003cli\u003eEstimated sale price\u003c/li\u003e\n\u003cli\u003eEstimated rental price\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" src=\"/images/wechat/ee56062d1a1a.png\"\u003e\u003c/p\u003e\n\u003ch3 id=\"4-scroll-down-for-cadastral-information-and-building-structure\"\u003e4) Scroll Down for Cadastral Information and Building Structure\u003c/h3\u003e\n\u003cp\u003eContinue scrolling down to find a link to download cadastral information and details about the building\u0026rsquo;s structure.\u003c/p\u003e","title":"A Complete Guide to Buying Second-Hand Property in Spain: Using idealista for Cadastral Checks, Nota Simple, and Avoiding Pitfalls in Notarization and Transfer"},{"content":"In Mencius: Jin Xin I, Mencius said:\n\u0026ldquo;Yangzi\u0026rsquo;s principle is \u0026lsquo;for oneself.\u0026rsquo; He would not pluck a single hair from his body to benefit the world. Mozi advocates \u0026lsquo;universal love.\u0026rsquo; If it would benefit the world, he would do it, even if it meant wearing himself out from head to heel. Zimo holds to the middle ground. Holding to the middle is closer to the right way, but to hold to the middle without weighing circumstances is the same as holding to one extreme. The reason for hating those who hold to one extreme is that they damage the Way, upholding one point while neglecting a hundred others.\u0026rdquo;\nAccording to legend, Mozi\u0026rsquo;s student Qin Guli met Yang Zhu and asked him bluntly:\n\u0026ldquo;If you could benefit the entire world by plucking a single hair from your body, would you do it?\u0026rdquo;\nYang Zhu shook his head and replied:\n\u0026ldquo;The problems of the world are not something that can be solved by a single hair.\u0026rdquo;\nQin Guli retorted:\n\u0026ldquo;This is just a hypothetical. If plucking one of your hairs could bring peace to the world, would you be willing?\u0026rdquo;\nUpon hearing this, Yang Zhu remained silent.\n1. Mencius\u0026rsquo;s Stance: Praising Mozi, Criticizing Yang Zhu In response, Mencius directly criticized Yang Zhu\u0026rsquo;s \u0026ldquo;for oneself\u0026rdquo; theory as narrow-minded and highly praised Mozi\u0026rsquo;s spirit of selfless dedication. He pointed out:\nYangzi advocated \u0026ldquo;for oneself\u0026rdquo;; even if plucking a single hair could benefit the world, he would not do it. Mozi advocated \u0026ldquo;universal love\u0026rdquo;; even if it meant wearing himself out from head to heel, as long as it benefited the world, he would do it. Mencius also emphasized:\nIf one holds to the middle ground without knowing how to adapt to circumstances, one will ultimately harm the Way through inflexibility, leading to a partial view that neglects the whole.\nThus, the question is left for later generations—\nIf you had to choose, would you pluck the hair, or not?\n2. Another Perspective from Liezi: Yang Zhu Was Not Selfish In fact, the \u0026ldquo;Yang Zhu\u0026rdquo; chapter of the Liezi offers another interpretation of his thought:\n\u0026ldquo;The ancients would not sacrifice a single hair to benefit the world, nor would they accept the whole world to serve their own person. If everyone refused to sacrifice a single hair, and everyone refused to try and benefit the world, the world would be in order.\u0026rdquo;\nYang Zhu emphasized that people should distinguish boundaries and protect the limits of their rights:\n\u0026ldquo;What is mine, others cannot take; what is not mine, I will not take either.\u0026rdquo;\nHe believed:\nIf everyone keeps to their own boundaries, without coercion or seizure, and without infringing upon others in the name of \u0026ldquo;benefiting the world,\u0026rdquo; The world will naturally be well-governed.\n3. The Logic Behind \u0026ldquo;Plucking a Hair to Benefit the World\u0026rdquo; Yang Zhu\u0026rsquo;s philosophy can be summarized in three layers:\n1. The Fallacy of Idealism \u0026ldquo;Plucking a hair to benefit the world\u0026rdquo; is itself a hypothetical, lacking a basis in reality.\n2. The Autonomy of Rights Even if the hypothetical were true, the key question is—\nWho does the plucking?\nIf someone else forcibly plucks the hair, individual rights are violated. What legitimacy does this kind of \u0026ldquo;benefit to the world\u0026rdquo; have? 3. The Slippery Slope of Boundaries Plucking a single hair today may seem trivial,\nbut once a precedent is set:\nWill they ask for a piece of flesh next time? And after that, will they ask for a life? In Yang Zhu\u0026rsquo;s view:\nThis is not a question of a single hair, but a question of the boundary of individual rights.\n4. The Core of Yang Zhu\u0026rsquo;s Thought: The Boundary Between the Collective and the Individual What Yang Zhu truly cared about was not cold self-preservation, but:\n\u0026ldquo;The boundary between the collective and the individual\u0026rdquo;\nEveryone not sacrificing a hair = Mutual non-infringement Everyone not trying to benefit the world = Not plundering others in the name of a \u0026ldquo;greater good\u0026rdquo; He reminds us:\nThe world is in chaos precisely because people compete to \u0026ldquo;benefit the world,\u0026rdquo;\nwhen in reality they are harming the world to fulfill the private interests of a few.\nRather than empty talk about governing the state and bringing peace to the world,\nit is better to first do three things:\nUphold individual boundaries Respect the rights of others Do not coerce individuals with noble-sounding reasons 5. The \u0026ldquo;Plucking a Hair\u0026rdquo; Debate in Reality In the real world, this question often manifests as:\n\u0026ldquo;The greater good\u0026rdquo; vs. \u0026ldquo;private interest\u0026rdquo; Collective goals vs. individual rights But true harmony does not lie in:\nSacrificing the individual to perfect the world\nBut rather in:\nEveryone being able to respect each other\u0026rsquo;s rights and boundaries.\nAs Yang Zhu said:\n\u0026ldquo;My body is not mine to harm; things are not mine to take.\u0026rdquo;\n6. My Choice Therefore, if I had to choose—\nI would stand firm: I will not pluck a single hair.\nThis is not indifference, but because I know deep down:\nThe good governance of the world begins with the self-discipline of the individual. The weight of rights cannot be easily shaken by a mere hypothetical. True civilization\ndoes not demand that individuals sacrifice themselves for an abstract \u0026ldquo;world,\u0026rdquo;\nbut ensures that every single person—\nnever has to be forced to pluck that single hair.\n","permalink":"https://www.houdao.org/en/the-meaning-behind-not-plucking-a-single-hair-a-debate-on-individual-rights-and-the-boundary-between-self-and-society/","summary":"\u003cp\u003eIn \u003cem\u003eMencius: Jin Xin I\u003c/em\u003e, Mencius said:\u003c/p\u003e\n\u003cblockquote\u003e\n\u003cp\u003e\u0026ldquo;Yangzi\u0026rsquo;s principle is \u0026lsquo;for oneself.\u0026rsquo; He would not pluck a single hair from his body to benefit the world. Mozi advocates \u0026lsquo;universal love.\u0026rsquo; If it would benefit the world, he would do it, even if it meant wearing himself out from head to heel. Zimo holds to the middle ground. Holding to the middle is closer to the right way, but to hold to the middle without weighing circumstances is the same as holding to one extreme. The reason for hating those who hold to one extreme is that they damage the Way, upholding one point while neglecting a hundred others.\u0026rdquo;\u003c/p\u003e","title":"The Meaning Behind 'Not Plucking a Single Hair': A Debate on Individual Rights and the Boundary Between Self and Society"},{"content":"Living abroad, whenever I\u0026rsquo;m at a party and things get lively, there are always a few people with a sense of \u0026lsquo;superior civilization\u0026rsquo; superiority who feign innocence and ask me:\n“Do Chinese people eat dogs?”\nTheir eyes are often thirty percent curiosity and seventy percent judgment. It\u0026rsquo;s as if my nod would instantly devolve me from a modern human into a blood-drinking barbarian. I\u0026rsquo;ve long since stopped rushing to explain. Instead, I smile and ask back:\n“Do you drink milk? Do you eat veal?”\nThis isn\u0026rsquo;t just about different dietary habits; it\u0026rsquo;s a game of moral hypocrisy and the power to define the narrative.\n1. The Bloody Truth Behind Milk: The Hidden \u0026ldquo;Systemic Cruelty\u0026rdquo; Westerners\u0026rsquo; protection of dogs stems from an emotional projection—dogs are family. However, this overflowing affection vanishes without a trace when faced with industrial farming.\nTake milk, a staple for Westerners, as an example. Have you ever wondered why dairy cows produce milk continuously?\nBecause they are constantly being artificially inseminated, getting pregnant, and giving birth.\nThe logic behind this is brutally cruel: for humans to drink milk, the newborn calves (especially males), unable to produce milk and prized for their tender meat, are often sent to the slaughterhouse shortly after birth to become an expensive delicacy—veal.\nThis is the true definition of \u0026ldquo;wiping the plate clean\u0026rdquo;: plundering the mother\u0026rsquo;s milk and devouring the child\u0026rsquo;s flesh.\nIn comparison, is the cruelty of this industrial process really more civilized than \u0026ldquo;eating dogs\u0026rdquo;?\nThis is the Western logical trap: anything that can please humans and provide emotional value (like dogs) is a \u0026ldquo;friend\u0026rdquo;; anything that is silent and provides nutritional value (like cows) is an \u0026ldquo;industrial raw material.\u0026rdquo;\nThis isn\u0026rsquo;t humanitarianism; it\u0026rsquo;s a \u0026ldquo;species pageant\u0026rdquo;—the cute ones get immunity, while the plain-looking ones deserve to be eaten.\n2. A Historical Perspective: In China, the Truly \u0026ldquo;Sacred\u0026rdquo; Animal Was the Cow, Not the Dog Let\u0026rsquo;s return to the historical context.\nChina is a classic agrarian civilization. For thousands of years, the truly inviolable core resource was the cow, not the dog.\nIn an era without tractors, cattle were the power for plowing, the guarantee of grain production, and a \u0026ldquo;strategic asset\u0026rdquo; for a family, or even a dynasty. Therefore, the laws protecting cattle throughout Chinese history were far stricter than what Westerners might imagine today.\n1. How Dynastic Laws Protected Draft Cattle Pre-Qin and Han Dynasties\nThe Book of Rites already stipulated: \u0026ldquo;A feudal lord shall not kill an ox without due cause.\u0026rdquo;\nBy the Han Dynasty, privately slaughtering draft cattle was considered a serious crime, with severe cases even punishable by death.\nThe Prosperous Tang Dynasty\nThe Tang Code explicitly stated:\nHe who kills a cow shall be sentenced to one and a half years of penal servitude.\nOn a legal level, the life of a draft ox was valued more highly than that of ordinary livestock, and even more than some human rights.\nUp to the Qing Dynasty\nThe Great Qing Legal Code, the last imperial dynasty\u0026rsquo;s law, continued this tradition:\nPrivately slaughtering one\u0026rsquo;s own draft ox is punishable by one hundred strokes of the cane and three years of penal servitude.\nThis means—\nFor thousands of years in Chinese society, eating beef was not only \u0026ldquo;improper\u0026rdquo; but also illegal.\n2. The True Place of Dogs in Traditional China Unlike cattle, the role of dogs in traditional Chinese society was very pragmatic:\nGuarding the home Assisting in hunts Serving as a secondary food source when necessary The idiom \u0026ldquo;hanging a sheep\u0026rsquo;s head to sell dog meat\u0026rdquo; (a bait-and-switch) itself illustrates:\nEating dog meat was a perfectly ordinary, everyday practice in ancient China, carrying no moral stigma whatsoever.\nThe famous Han Dynasty general Fan Kuai started his career as a \u0026ldquo;dog butcher,\u0026rdquo; and the future emperor Liu Bang also ate dog meat in his early years—\nAt that time, this was as natural and common as Westerners eating beef today.\n3. The Greatest Irony A thought-provoking fact is:\nThe beef hot pot, sirloin steaks, and steak culture popular on Chinese tables today are precisely the products of Western culinary influence since modern times.\nIn other words:\nYou taught us to eat the \u0026ldquo;sacred cow\u0026rdquo; that toiled its entire life; And then you turn around and condemn us for eating the so-called \u0026ldquo;man\u0026rsquo;s best friend.\u0026rdquo; This logic is itself filled with the absurdity of cultural hegemony.\n3. Aesthetics and Values: Who Defines \u0026ldquo;Civilized\u0026rdquo; and \u0026ldquo;Barbaric\u0026rdquo;? This cultural double standard is not just present at the dinner table; it permeates the very definitions of aesthetics and values.\nInterestingly, ancient Chinese were not unfamiliar with \u0026ldquo;high noses, deep-set eyes, blonde hair, and blue eyes\u0026rdquo;—but those were the features of Zhong Kui and door gods. In traditional Han Chinese perception, these features, due to their intimidating appearance, were assigned the function of \u0026ldquo;warding off evil\u0026rdquo; and even carried a certain \u0026ldquo;non-human,\u0026rdquo; demonic connotation.\nIn contrast, traditional Chinese beauty was the solemn grace of the Dunhuang Apsaras, the subtle gentleness of Lin Daiyu\u0026rsquo;s \u0026ldquo;phoenix eyes,\u0026rdquo; and the plump elegance of Tang Dynasty court ladies.\nYet today, under the influence of Western cultural hegemony, the features of a door god have become the standard for \u0026ldquo;international supermodels,\u0026rdquo; while original Eastern charm has become \u0026ldquo;unconventional.\u0026rdquo;\nThis is the same logic as the \u0026ldquo;dog-eating\u0026rdquo; issue: the West holds the power of definition.\nThey define what is \u0026ldquo;beautiful,\u0026rdquo; and so monolids become a flaw to be corrected;\nThey define what is \u0026ldquo;civilized,\u0026rdquo; and so eating dog meat becomes barbaric, while force-feeding geese for their livers (foie gras) and separating mother cows from their calves becomes \u0026ldquo;culinary culture.\u0026rdquo;\n4. Conclusion: Refuse to Be Judged Personally, I don\u0026rsquo;t eat dog meat, but this is purely out of emotional aversion, not moral superiority. As long as the dogs are raised for meat legally and ethically, I would never package my personal emotional preference as a universal standard of civilization to judge others\u0026rsquo; dinner tables.\nThe next time someone asks you, “Do Chinese people eat dogs?”, please don\u0026rsquo;t feel ashamed or rush to explain that \u0026ldquo;only a small number of people do.\u0026rdquo;\nYou can calmly tell them:\n\u0026ldquo;The beauty of the world lies in its diversity. In China, we respected the labor of the cow; in the West, you cherish the companionship of the dog.\nBut please don\u0026rsquo;t stand on a moral high ground looking down on everyone while slicing your veal.\nWhat\u0026rsquo;s truly being consumed is often not the dog, but humanity\u0026rsquo;s most basic reason and tolerance.\u0026rdquo;\n","permalink":"https://www.houdao.org/en/do-chinese-people-eat-dogs-the-arrogance-and-double-standards-of-the-west/","summary":"\u003cp\u003eLiving abroad, whenever I\u0026rsquo;m at a party and things get lively, there are always a few people with a sense of \u0026lsquo;superior civilization\u0026rsquo; superiority who feign innocence and ask me:\u003cbr\u003e\n“Do Chinese people eat dogs?”\u003c/p\u003e\n\u003cp\u003eTheir eyes are often thirty percent curiosity and seventy percent judgment. It\u0026rsquo;s as if my nod would instantly devolve me from a modern human into a blood-drinking barbarian. I\u0026rsquo;ve long since stopped rushing to explain. Instead, I smile and ask back:\u003cbr\u003e\n“Do you drink milk? Do you eat veal?”\u003c/p\u003e","title":"Do Chinese People Eat Dogs? — The Arrogance and Double Standards of the West"},{"content":"Spain has a system of free and compulsory education for ages 6 to 16, covering 6 years of primary school and 4 years of secondary school.\n📚 School Hours and Tuition Differences Spanish Public Schools: School hours are from 9:00 AM to 2:00 PM, with 4 classes per day. Education is free. Spanish Private and International Schools: School hours are typically from 9:00 AM to 4:00 PM, with 6 classes per day. The median tuition for private schools is approximately €6,000/year (about 50,000 RMB). International schools cost around €8,000/year (about 70,000 RMB). Costs vary significantly by grade level, region, and school, with differences of up to 1-2 times the median. 🏫 Teaching Staff and Pedagogical Features Teacher absenteeism is relatively high in Spain. A doctor\u0026rsquo;s note for sick leave is legally binding, and paid sick leave can be granted over the phone. Primary schools generally use a \u0026ldquo;generalist\u0026rdquo; system, where a single teacher teaches multiple subjects like English, math, humanities, science, art, and physical education, which may limit subject-specific expertise. Subject-specific teaching only begins in secondary school. The saying \u0026ldquo;the gym teacher taught my math\u0026rdquo; is not a joke in Spain but a result of the generalist system in primary schools. Exam scores are not ranked. 🈯 Language of Instruction and Multilingual Environment International schools primarily use English for instruction. Private and public schools mainly use Spanish. Autonomous communities like Valencia and Catalonia require students to learn the local regional language. In secondary school, a second foreign language such as French or German is added, making the multilingual workload demanding. 📖 Workload and Holiday Schedule There is less homework. The academic year is divided into three terms, with a total of about 160–180 instructional days. Holidays are long. 🇨🇳 Comparison with Basic Education in China Public Schools: School hours are from 8:00 AM to 4:00 PM, with 6–8 classes per day. Education is free, with some regions offering after-school programs. Private/International Schools: 8:00 AM to 5:30 PM, with evening self-study sessions starting in middle school, which do not exist in Spain. Private: Approx. 60,000 RMB/year International: Approx. 180,000 RMB/year The academic year is divided into two semesters, with over 190 instructional days. 🏟️ Disparity in Campus Facilities International schools in China often have campuses exceeding 100 acres, featuring heated swimming pools, theaters, multimedia libraries, maker labs, Olympic-standard stadiums, and even equestrian centers, golf courses, and drone and robotics labs. In contrast, Spanish schools are modest and compact, with simpler facilities. 📘 Curriculum and Difficulty Many people believe that primary school math in China is much harder than abroad, but this is a long-standing misconception.\nFirst, let\u0026rsquo;s look at age. Spanish children start school earlier. Spain\u0026rsquo;s enrollment is based on the calendar year of birth (starting from January 1st), unlike China, which requires children to be six years old by the start of the school year on September 1st. Therefore, Chinese students in the same grade are, on average, about 9 months older than their Spanish counterparts, with a maximum possible age gap of 1 year and 9 months.\nSecond, Spanish math textbooks introduce fractions from the first grade of primary school, whereas Chinese schools introduce the concept in the third grade. The A-Level math curriculum in the final year of high school already includes calculus.\nAlthough Western math curricula often have greater breadth and depth than those in China, their instructional design has clear shortcomings: fewer classes, more holidays, and faster-paced teaching that relies heavily on students\u0026rsquo; self-study and absorption. In contrast, Chinese math education is more robust in terms of class hours and systematic explanation, making it better suited for learners who need clear steps and continuous practice.\nOf course, the math content taught in international schools in China is consistent with Western standards; the comparison above is only between public school curricula.\n🎓 IB Score Comparison Spain: King’s College Madrid (2024): 36 points (highest in the country) Agora Lledo (highest in the Valencia region): 33.5 points Mas Camarena (ranked #1 overall in Spain): 32 points China: Shanghai Pinghe School: 40 points Shanghai World Foreign Language Middle School (WFLMS): 39 points At least a dozen international schools in China have an average IB score higher than 36 (Spain\u0026rsquo;s highest average). 🎯 Top University Admissions Comparison King’s College Madrid (2023): Out of approximately 100 graduates, received only 4 G5 offers (1 Cambridge, 1 Imperial, 1 LSE, 1 UCL), with no Oxford offers. The G5 acceptance rate is no more than 4% (as one student can receive multiple offers). Chinese Schools: Shanghai Pinghe School (2025): 6 offers from Oxford and Cambridge, with a 77% G5 acceptance rate. Shenzhen College of International Education (SCIE) (2025): UK applications: 330 applicants, 41 Oxbridge pre-offers, 409 G5 pre-offers. US applications: 210 applicants, 18 Ivy League/Top 10 offers, 243 Top 30 offers. 📌 Core Conclusions International schools in China achieve significantly higher IB and A-Level scores, giving them an advantage when applying to top universities in the UK and US. Even ethnic Chinese students with Spanish citizenship are still considered \u0026ldquo;Asian\u0026rdquo; in diversity-focused admissions, where scores remain the decisive factor. 🧭 Recommendations for Choosing an Education System Spain: Offers a relaxed education, long holidays, and is suitable for families wanting to cultivate specializations in soccer, tennis, or cycling, and a rich language environment. Achieving excellent academic results requires strong self-learning and self-discipline. China: Strong in test-taking skills, fast-paced, and better suited for families aiming for top universities and driven by academic achievement. 📢 Additional Thoughts: Is Exam-Oriented Education Valuable? Some criticize Chinese-style education as \u0026ldquo;exam-oriented,\u0026rdquo; producing \u0026ldquo;high scores but low ability\u0026rdquo; and being too \u0026ldquo;involuted\u0026rdquo; (hyper-competitive).\n\u0026ldquo;Exam-oriented\u0026rdquo; is not inherently a pejorative term. Its essence is to achieve good results in standardized tests like the Gaokao (National College Entrance Examination), which is one of the fairest forms of competition in Chinese society today. It offers ordinary people, especially children from humble or lower-class backgrounds, a chance to change their destiny and achieve upward social mobility.\nIn the admissions systems of many top Western universities, grades are often not the sole criterion. A student\u0026rsquo;s \u0026ldquo;profile\u0026rdquo;—such as family background, a golf championship title, or volunteer experience in Africa—is highly valued and often serves as a bonus for children from wealthy families. This competition of \u0026ldquo;soft power\u0026rdquo; invisibly widens the gap at the starting line, creating another form of unfairness.\nUnder China\u0026rsquo;s Gaokao system, however, anyone who is hardworking and talented enough can enter a top university based on merit. Excelling in the Gaokao is not achieved through rote memorization but is built on a deep understanding and flexible application of knowledge.\nStarting from scratch in the early 1980s, China rapidly built up the world\u0026rsquo;s second-largest technological, military, and economic power, second only to the United States. Unlike the US, which relies on an immigrant-based talent structure—where over half of its Nobel laureates in science are immigrants, and business giants like Elon Musk, Steve Jobs, Sergey Brin, and Jensen Huang are also immigrants or children of immigrants—China\u0026rsquo;s progress has been driven entirely by engineering and technical talent cultivated by its domestic education system.\nToday, Chinese researchers account for over half of the senior personnel in the AI field; China has its own space station; and it has become the \u0026ldquo;world\u0026rsquo;s factory.\u0026rdquo; All of this stems from an education system that continuously produces a vast pool of outstanding talent.\nWithout competition, without \u0026ldquo;involution,\u0026rdquo; it would be impossible to cultivate a large-scale workforce of engineers and technicians, and the nation\u0026rsquo;s rapid development would not have been possible. The reason European countries can afford to \u0026ldquo;lie flat\u0026rdquo; today is that they are coasting on the centuries of accumulated advantages left by their ancestors.\nSpain was once the world\u0026rsquo;s first \u0026ldquo;empire on which the sun never sets.\u0026rdquo; Spanish remains the language with the second-largest number of native speakers globally, around 595 million, second only to Mandarin Chinese. Yet, Spain itself has a population of only about 47 million. Its national decline is precisely because its society gradually relaxed, and its golden age ended.\nAt the beginning of the last century, China was still in a semi-feudal, semi-colonial state, while the West had long completed the Industrial Revolution and developed systematic modern science. The reason China can stand today as the only great power capable of competing with the United States is that generations of Chinese people have relied on education to achieve knowledge accumulation and technological progress, and on hard work to strive for the future.\nAll this progress is thanks to the diligent and ambitious Chinese students and the dedicated and devoted Chinese teachers.\n📣 To fall behind is to be vulnerable. Chinese people, never forget the words:\nStudy for the rise of China!\n","permalink":"https://www.houdao.org/en/a-comprehensive-comparison-of-basic-education-in-spain-the-truth-chinese-parents-should-know/","summary":"\u003cp\u003eSpain has a system of free and compulsory education for ages 6 to 16, covering 6 years of primary school and 4 years of secondary school.\u003c/p\u003e\n\u003ch3 id=\"-school-hours-and-tuition-differences\"\u003e📚 School Hours and Tuition Differences\u003c/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eSpanish Public Schools\u003c/strong\u003e: School hours are from 9:00 AM to 2:00 PM, with 4 classes per day. Education is free.\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003eSpanish Private and International Schools\u003c/strong\u003e: School hours are typically from 9:00 AM to 4:00 PM, with 6 classes per day.\n\u003cul\u003e\n\u003cli\u003eThe median tuition for private schools is approximately €6,000/year (about 50,000 RMB).\u003c/li\u003e\n\u003cli\u003eInternational schools cost around €8,000/year (about 70,000 RMB).\u003c/li\u003e\n\u003cli\u003eCosts vary significantly by grade level, region, and school, with differences of up to 1-2 times the median.\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003c/ul\u003e\n\u003ch3 id=\"-teaching-staff-and-pedagogical-features\"\u003e🏫 Teaching Staff and Pedagogical Features\u003c/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTeacher absenteeism is relatively high in Spain. A doctor\u0026rsquo;s note for sick leave is legally binding, and paid sick leave can be granted over the phone.\u003c/li\u003e\n\u003cli\u003ePrimary schools generally use a \u0026ldquo;generalist\u0026rdquo; system, where a single teacher teaches multiple subjects like English, math, humanities, science, art, and physical education, which may limit subject-specific expertise.\u003c/li\u003e\n\u003cli\u003eSubject-specific teaching only begins in secondary school.\u003c/li\u003e\n\u003cli\u003eThe saying \u0026ldquo;the gym teacher taught my math\u0026rdquo; is not a joke in Spain but a result of the generalist system in primary schools.\u003c/li\u003e\n\u003cli\u003eExam scores are not ranked.\u003c/li\u003e\n\u003c/ul\u003e\n\u003ch3 id=\"-language-of-instruction-and-multilingual-environment\"\u003e🈯 Language of Instruction and Multilingual Environment\u003c/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInternational schools primarily use English for instruction.\u003c/li\u003e\n\u003cli\u003ePrivate and public schools mainly use Spanish.\u003c/li\u003e\n\u003cli\u003eAutonomous communities like Valencia and Catalonia require students to learn the local regional language.\u003c/li\u003e\n\u003cli\u003eIn secondary school, a second foreign language such as French or German is added, making the multilingual workload demanding.\u003c/li\u003e\n\u003c/ul\u003e\n\u003ch3 id=\"-workload-and-holiday-schedule\"\u003e📖 Workload and Holiday Schedule\u003c/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThere is less homework.\u003c/li\u003e\n\u003cli\u003eThe academic year is divided into three terms, with a total of about 160–180 instructional days.\u003c/li\u003e\n\u003cli\u003eHolidays are long.\u003c/li\u003e\n\u003c/ul\u003e\n\u003ch3 id=\"-comparison-with-basic-education-in-china\"\u003e🇨🇳 Comparison with Basic Education in China\u003c/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003ePublic Schools\u003c/strong\u003e: School hours are from 8:00 AM to 4:00 PM, with 6–8 classes per day. Education is free, with some regions offering after-school programs.\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003ePrivate/International Schools\u003c/strong\u003e: 8:00 AM to 5:30 PM, with evening self-study sessions starting in middle school, which do not exist in Spain.\n\u003cul\u003e\n\u003cli\u003ePrivate: Approx. 60,000 RMB/year\u003c/li\u003e\n\u003cli\u003eInternational: Approx. 180,000 RMB/year\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003eThe academic year is divided into two semesters, with over 190 instructional days.\u003c/li\u003e\n\u003c/ul\u003e\n\u003ch3 id=\"-disparity-in-campus-facilities\"\u003e🏟️ Disparity in Campus Facilities\u003c/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInternational schools in China often have campuses exceeding 100 acres, featuring heated swimming pools, theaters, multimedia libraries, maker labs, Olympic-standard stadiums, and even equestrian centers, golf courses, and drone and robotics labs.\u003c/li\u003e\n\u003cli\u003eIn contrast, Spanish schools are modest and compact, with simpler facilities.\u003c/li\u003e\n\u003c/ul\u003e\n\u003ch3 id=\"-curriculum-and-difficulty\"\u003e📘 Curriculum and Difficulty\u003c/h3\u003e\n\u003cp\u003eMany people believe that primary school math in China is much harder than abroad, but this is a long-standing misconception.\u003c/p\u003e","title":"A Comprehensive Comparison of Basic Education in Spain: The Truth Chinese Parents Should Know"},{"content":"2025-01-28 23:52 Spain\n📍Starting Point: Town parking lot (39.6599279, -0.8916659) ⏱️Duration: 3 hours Valley Exploration:\nFrom the fork (39.6572005, -0.8921885), delve into the emerald river valley to reach the hidden Blue Lagoon (Charco Azul) (39.6650017, -0.8922144)\nRope-Climbing to Caves + Hanging Bridges,\nReturn to the fork via the bridges above the river.\nCanyon Wonders:\nFrom the back mountain entrance (39.6572988, -0.8929979), loop around to the other side of the town (39.6546164, -0.8941087)\nVia the chapel (39.6557441, -0.8931008) leading directly to the medieval castle (39.6558496, -0.8933849)(39.6558496, -0.8933849)\n","permalink":"https://www.houdao.org/en/a-hiking-route-in-chulilla-the-cliff-town-a-6km-journey-through-a-millennium/","summary":"\u003cp\u003e2025-01-28 23:52 Spain\u003c/p\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" src=\"/images/wechat/adc4be0a4441.jpg\"\u003e\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e📍Starting Point\u003c/strong\u003e: Town parking lot (39.6599279, -0.8916659)\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003e⏱️Duration\u003c/strong\u003e: 3 hours\u003c/li\u003e\n\u003c/ul\u003e\n\u003chr\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eValley Exploration\u003c/strong\u003e:\u003cbr\u003e\nFrom the fork (39.6572005, -0.8921885), delve into the emerald river valley to reach the hidden Blue Lagoon (Charco Azul) (39.6650017, -0.8922144)\u003c/p\u003e\n\u003c/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRope-Climbing to Caves + Hanging Bridges\u003c/strong\u003e,\u003cbr\u003e\nReturn to the fork via the bridges above the river.\u003c/p\u003e\n\u003c/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCanyon Wonders\u003c/strong\u003e:\u003cbr\u003e\nFrom the back mountain entrance (39.6572988, -0.8929979), loop around to the other side of the town (39.6546164, -0.8941087)\u003c/p\u003e","title":"A Hiking Route in Chulilla, the Cliff Town: A 6km Journey Through a Millennium"},{"content":"Almost everyone has heard the old saying, \u0026ldquo;A turtle for a thousand years, a tortoise for ten thousand.\u0026rdquo; In Chinese culture, turtles and tortoises are seen as symbols of longevity, as if they are naturally destined to outlive several human generations.\nBut here\u0026rsquo;s the question: Has there ever really been a turtle that lived for a thousand years?\nMany people see a giant turtle or tortoise and exclaim, \u0026ldquo;Wow, this one must be hundreds of years old!\u0026rdquo; While such statements might \u0026ldquo;sound reasonable,\u0026rdquo; they actually don\u0026rsquo;t stand up to scrutiny.\n1. Can Turtles Really Live for a Thousand Years? Let\u0026rsquo;s See What Science Says ● Chinese Pond Turtle (Mauremys reevesii) This dark-shelled turtle, often simply called \u0026ldquo;wugui\u0026rdquo; (black turtle), is the most common symbol of longevity. In reality, its lifespan is generally only 30-40 years, and even in excellent captive environments, it rarely exceeds 60 years.\n● Alligator Snapping Turtle (Macrochelys temminckii) With its ferocious appearance and large size, it\u0026rsquo;s often mistaken for being ancient. In fact, this turtle\u0026rsquo;s most notable trait is its extremely fast growth rate. In the Americas, it\u0026rsquo;s a source for canned meat, and in farmed environments, it can gain 10 jin (5 kg) per year. Its lifespan is typically 20-70 years, rarely exceeding a century.\n● Galápagos Tortoise (Chelonoidis niger) This is indeed one of the most famous long-lived tortoise species on Earth. A living example is \u0026ldquo;Jonathan,\u0026rdquo; who has reached 193 years old, making him the oldest known living terrestrial vertebrate. But such individuals are extremely rare and represent the absolute limit of their lifespan.\n● Chinese Softshell Turtle (Pelodiscus sinensis) An adult\u0026rsquo;s shell is typically 20-30 cm long, and it weighs about 1-2 kg. In the wild, its lifespan is around 20-30 years, which can extend to about 40 years in captivity.\n● Yangtze Giant Softshell Turtle (Rafetus swinhoei) — also known as \u0026ldquo;Yuan\u0026rdquo; Revered as a \u0026ldquo;divine turtle\u0026rdquo; in ancient legends and the prototype for the creature that carried Tang Sanzang across the River of Flowing Sands in Journey to the West. It is a massive, critically endangered freshwater turtle. A related species is the Euphrates softshell turtle, found in Turkey and the Middle East.\nIn 2019, a female Yangtze giant softshell turtle at the Suzhou Zoo died at the age of approximately 90, which was a record age for the species globally. The male is also estimated to be around 90 years old. This is their record lifespan limit.\n🔍 Summary: Whether it\u0026rsquo;s aquatic turtles, terrestrial tortoises, or large softshell turtles, there is currently no conclusive evidence to support them living for several hundred years, let alone a thousand.\nThe gap between legend and reality isn\u0026rsquo;t just an era; it\u0026rsquo;s an entire scientific system.\n2. My Personal Investigation: Stop Believing Hearsay When I first heard the \u0026ldquo;thousand-year turtle\u0026rdquo; claim, especially on television, I found it fascinating. But my rational mind told me: such claims require evidence.\nSo, I started doing my own research instead of stopping at \u0026ldquo;I heard it on TV\u0026rdquo; or \u0026ldquo;a friend posted it on social media.\u0026rdquo; I followed this path of verification:\nChecked authoritative international science popularization platforms like National Geographic and ScienceDaily. Read multiple professional papers on turtle and tortoise lifespan and growth rates. Browsed observation records and comparative data from professional turtle and tortoise enthusiast communities. Reviewed feeding and lifespan records from major zoos and research institutions. The results were surprisingly consistent:\n✅ Large size ≠ Long life ✅ Fast growth ≠ Old age Modern science has long used methods like bone layer analysis, radioisotope dating, and long-term tracking studies to confirm that no turtle species has ever been verified to live for several hundred years, let alone a \u0026ldquo;thousand.\u0026rdquo;\n📌 The proper order for verifying any information should be:\nAuthoritative scientific sources \u0026gt; Formally published research by scientists \u0026gt; Professional community discussions \u0026gt; Personal observation \u0026gt; Online rumors\n3. Bigger Means Older? Beware This Intuitive Logic Trap Many people see a giant alligator snapping turtle or a Yangtze giant softshell turtle and declare, \u0026ldquo;This must have lived for hundreds of years.\u0026rdquo; This line of thinking is a classic cognitive bias.\nThe reason is simple: there are many species of turtles and tortoises, with vast differences in growth rates and adult sizes.\nFor example: Chinese Softshell Turtle: Adult shell length is typically 25 cm, with a weight of 2 kg. Yangtze Giant Softshell Turtle: Adult shell length can reach 50-60 cm, with a weight of dozens of kilograms. But this doesn\u0026rsquo;t mean the Yangtze giant softshell turtle \u0026ldquo;lives longer\u0026rdquo;—quite the opposite, it grows fast and matures early. In an ideal captive environment, it can reach its adult size in a decade or even less.\nIt\u0026rsquo;s like how among humans, you have Yao Ming at 2.3 meters tall and others who are only 1.6 meters tall—being tall doesn\u0026rsquo;t mean you\u0026rsquo;ll live longer.\nTherefore, using size to judge age is extremely unreliable. Determining a turtle\u0026rsquo;s age should be a comprehensive assessment based on its species, living conditions, and scientific measurement techniques.\n4. Why Are We So Prone to Making Assumptions? The \u0026ldquo;thousand-year turtle\u0026rdquo; saying is actually a reflection of our traditional way of thinking:\nValuing experience over verification; intuition over logic; legends over empirical evidence.\nIn traditional Chinese culture:\nWe emphasize \u0026ldquo;wu xing\u0026rdquo; (intuitive understanding), \u0026ldquo;tian ren he yi\u0026rdquo; (harmony between humanity and nature), and \u0026ldquo;dao fa ziran\u0026rdquo; (the Way follows nature). However, we did not develop a systematic framework of mathematical logic. We lacked a foundation in hands-on experimentation and repeatable verification. We are better at telling \u0026ldquo;stories\u0026rdquo; than at creating \u0026ldquo;testable and falsifiable\u0026rdquo; hypotheses. This leads us to get used to \u0026ldquo;taking things for granted\u0026rdquo; when facing many natural phenomena, while lacking the ability for proactive verification and systematic thinking.\n5. Science Isn\u0026rsquo;t Built on What \u0026ldquo;Sounds Reasonable\u0026rdquo; The true power of modern science comes from the combination of rationalism and empiricism:\nRationalism emphasizes mathematics, logic, and deduction. But without real-world observation, it becomes empty \u0026ldquo;idealism.\u0026rdquo; Empiricism values observation, experimentation, and data collection. But without a theoretical framework to guide it, it can easily become fragmented knowledge. The core of science is:\n🔬 Deduction + Induction, Logic + Empirical Evidence, Theory + Data.\nWe, on the other hand, often stop at \u0026ldquo;it sounds like,\u0026rdquo; \u0026ldquo;our ancestors said so,\u0026rdquo; or \u0026ldquo;a friend told me,\u0026rdquo; even treating increasingly exaggerated claims as truth. Naturally, this makes it difficult to enter the real world of science.\nConclusion: Stop Making the Turtle a Scapegoat \u0026ldquo;A turtle for a thousand years, a tortoise for ten thousand\u0026rdquo; is, ultimately, a cultural legend, not a biological fact.\nInstead of immersing ourselves in myths passed down from our ancestors, we should apply a bit of rational spirit and scientific method to face this complex and real world.\nScience isn\u0026rsquo;t cold and heartless; it just asks us to ask one more question:\n👉 Is it true? Is there evidence? Is it supported by authoritative data?\nStop taking things as true just because they \u0026ldquo;look like it.\u0026rdquo; Stop accepting things wholesale just because \u0026ldquo;everyone says so.\u0026rdquo; Stop turning \u0026ldquo;I\u0026rsquo;ve heard of it\u0026rdquo; into \u0026ldquo;I believe it.\u0026rdquo; Starting today, let\u0026rsquo;s say goodbye to making assumptions and step into a world of logic, evidence, and critical thinking.\n","permalink":"https://www.houdao.org/en/a-thousand-year-turtle-when-will-we-stop-taking-things-for-granted/","summary":"\u003cp\u003eAlmost everyone has heard the old saying, \u0026ldquo;A turtle for a thousand years, a tortoise for ten thousand.\u0026rdquo; In Chinese culture, turtles and tortoises are seen as symbols of longevity, as if they are naturally destined to outlive several human generations.\u003c/p\u003e\n\u003cp\u003eBut here\u0026rsquo;s the question: \u003cstrong\u003eHas there ever really been a turtle that lived for a thousand years?\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003eMany people see a giant turtle or tortoise and exclaim, \u0026ldquo;Wow, this one must be hundreds of years old!\u0026rdquo; While such statements might \u0026ldquo;sound reasonable,\u0026rdquo; they actually \u003cstrong\u003edon\u0026rsquo;t stand up to scrutiny\u003c/strong\u003e.\u003c/p\u003e","title":"A Thousand-Year Turtle? When Will We Stop Taking Things for Granted?"},{"content":"The ethnic structure of Europe is not fixed from antiquity but was gradually formed through a long historical process of prehistoric population migrations, language replacement, political conquest, and religious integration.\nThe following sections outline the main stages and structural features of European ethnogenesis in chronological order.\nI. Neolithic Era: Near Eastern Farmers Enter Europe (c. 7000–5000 BCE)\nSource\nNear Eastern Fertile Crescent, Anatolia\nPaternal Genetic Signature\nRepresented by Haplogroup J (especially J2) (not exclusively, but a significant proportion in the early agricultural diffusion)\nDiffusion Area\nThe Balkans Aegean region Italian Peninsula Western Mediterranean coast Major Contributions\nSpread of agriculture Formation of settled societies Emergence of proto-cities Establishment of trade networks Development of early religious and legal structures The Mediterranean coastal regions gradually formed a city-state social structure, laying the foundation for the later Greek city-states and early Roman institutions.\nII. Bronze Age: Indo-European Steppe Peoples Enter Europe (c. 3000 BCE)\nSource\nPontic-Caspian Steppe (Yamnaya culture-related peoples)\nPaternal Genetic Signature\nR1a, R1b\nElements Introduced\nHorses and chariots Military aristocratic structure Patrilineal inheritance system Indo-European languages Result\nSignificant replacement of the male-dominant stratum in most parts of Europe The European linguistic system shifted wholesale to Indo-European. III. Language Replacement: The Separation of Civilizational Structure and Linguistic Origin The urban structures, institutions, and cultural traditions of Greek and Roman civilizations continued the foundation of the Neolithic Mediterranean-Near Eastern civilization, primarily established by early agricultural populations.\nBut their language systems were:\nGreek → Indo-European language family Latin → Indo-European language family Concluding Fact\nEarly agricultural populations laid the foundation for civilization and urban structures, but under the subsequent military and political systems dominated by Indo-European steppe peoples, a systematic Indo-Europeanization occurred at the linguistic level.\nIV. Iron Age: The Celts Dominate Western Europe (c. 800–100 BCE)\nPaternal Genetic Signature\nPredominantly R1b\nLanguage\nIndo-European family · Celtic branch\nDistribution Area\nGaul (modern France) British Isles Belgium Northern Italy Northern Iberian Peninsula Social Form\nTribal confederation structure, did not form a unified empire.\nV. Roman Period: Latinization and Integration (c. 100 BCE–400 CE)\nRoman Republic → Roman Empire Latin became the lingua franca of Western Europe Local Celts and other groups were culturally and linguistically Latinized Characteristics\nRome\u0026rsquo;s integration was primarily institutional, legal, and cultural; it did not involve large-scale, systematic population replacement.\nVI. The Rise of the Germanic Peoples (3rd–6th centuries CE)\nEthnic Characteristics\nThe Germanic peoples also belong to the Indo-European system, with paternal genetics dominated by Haplogroup R1, mixed with some original Northern European Haplogroup I components.\nMajor Branches\nOstrogoths Visigoths Franks Anglo-Saxons Norse Vikings Key Events\n476 CE: Germanic mercenaries depose the Western Roman Emperor Fall of the Western Roman Empire Subsequently, Western Europe gradually formed a political structure with Germanic nobility as the core of secular rule and the Church as the spiritual authority, eventually developing into the Holy Roman Empire system.\nVII. The Ethnogenesis and Linguistic Formation of England (Timeline) 410 CE: Roman legions withdraw from Britain\nMid-5th century CE (c. 450 onwards):\nAngles, Saxons, and Jutes enter Britain\nResult\nThe Celts were pushed to Scotland, Wales, and Ireland Language: English (Germanic family) Ethnic Structure: Germanic core + Celtic periphery VIII. The Ethnogenesis and Linguistic Formation of France (Timeline) 1st century BCE: Caesar conquers Gaul\n5th century CE: The Franks enter Gaul\nc. 481 CE: Clovis I establishes the Frankish Kingdom\nResult\nRuling Class: Germanic people (the Franks) Population Majority: Latinized Celts Language: Vulgar Latin evolves → French (Romance family) IX. Spain and Italy Spain 5th–8th centuries: Visigothic rule\n711–1492: Muslim rule in Iberia\nPopulation Composition\nNative Iberians Romans Germanic peoples North Africans Language\nSpanish (Romance, derived from Latin)\nItaly Core region of Roman civilization High degree of population continuity in Europe Language\nItalian (Romance family) X. Overview of European Regional Ethnic Structures Northern Europe: Germanic peoples (Germany, Austria, Norway, Sweden, Denmark, Iceland) Western Europe: Germanic ruling class + Latin cultural majority Southern Europe: Latino-Greek civilizational system Eastern Europe: Predominantly Slavic, with mixed Turkic and Balkan components XI. The Unifying Role of Religion After the fall of the Western Roman Empire, the only institution that maintained a complete, cross-regional organizational structure was the Catholic Church.\nLatin became the transnational language of religion and scholarship The Pope held the power to legitimize royal authority The religious network connected European nations and royal houses, forming a supranational integrative structure XII. Royal Marriages and Supranational Rule Represented by the House of Habsburg:\nRuled multiple countries through royal marriages The royal lineage often did not align with the local ethnic majority The concept of the nation-state primarily formed in the modern era.\nXIII. Concluding Facts Approximately 50%–60% of paternal lineages in Europe belong to Haplogroup R1 Ethnic divisions are not determined by ancestry alone But are shaped by the following factors combined:\nLanguage Historical memory Cultural traditions Political and religious structures Appendix I: Timeline of European Ethnogenesis Time Event Main Population Key Changes 7000–5000 BCE Neolithic agricultural diffusion Haplogroup J (represented by J2) Agriculture, settlement, proto-city-states 3000 BCE Arrival of Indo-European steppe peoples R1a / R1b Military aristocracy, Indo-European languages 800–100 BCE Celts dominate Western Europe R1b Main population of Western Europe 100 BCE Roman conquest of Gaul Romans + Celts Latinization 3rd–6th centuries CE Great Germanic Migrations Germanic peoples Collapse of Western Rome 476 CE Fall of the Western Roman Empire Germanic mercenaries Regime change 5th–8th centuries Gothic kingdoms Visigoths Western European monarchies 711–1492 Muslim rule in Iberia North Africans High degree of mixing Middle Ages Catholic integration of Europe Church system Supranational unity Modern Era Formation of nation-states Various peoples Solidification of national identities Appendix II: Comparison Table of Major Populations Population Paternal Genetic Signature Language System Historical Role Neolithic Farmers Represented by J2 Pre-Indo-European languages Foundation of agriculture, city-states Indo-European Steppe Peoples R1a / R1b Indo-European languages Military, ruling class Celts R1b Celtic branch Main population of Western Europe Greeks / Romans Mixed (incl. J and R haplogroups) Greek / Latin Imperial integration Germanic Peoples R1 Germanic branch Medieval ruling class Slavs Predominantly R1a Slavic branch Main population of Eastern Europe ","permalink":"https://www.houdao.org/en/an-overview-of-european-ethnogenesis-a-long-term-process-of-migration-language-replacement-and-institutional-integration/","summary":"\u003cp\u003eThe ethnic structure of Europe is not fixed from antiquity but was gradually formed through a long historical process of \u003cstrong\u003eprehistoric population migrations, language replacement, political conquest, and religious integration\u003c/strong\u003e.\u003c/p\u003e\n\u003cp\u003eThe following sections outline the main stages and structural features of European ethnogenesis in \u003cstrong\u003echronological order\u003c/strong\u003e.\u003c/p\u003e\n\u003chr\u003e\n\u003ch2 id=\"i-neolithic-era-near-eastern-farmers-enter-europe\"\u003eI. Neolithic Era: Near Eastern Farmers Enter Europe\u003c/h2\u003e\n\u003cp\u003e\u003cstrong\u003e(c. 7000–5000 BCE)\u003c/strong\u003e\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSource\u003c/strong\u003e\u003cbr\u003e\nNear Eastern Fertile Crescent, Anatolia\u003c/p\u003e\n\u003c/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePaternal Genetic Signature\u003c/strong\u003e\u003cbr\u003e\nRepresented by \u003cstrong\u003eHaplogroup J (especially J2)\u003c/strong\u003e (not exclusively, but a significant proportion in the early agricultural diffusion)\u003c/p\u003e","title":"An Overview of European Ethnogenesis: A Long-Term Process of Migration, Language Replacement, and Institutional Integration"},{"content":"We are accustomed to thinking that \u0026ldquo;the West has always been ahead of China,\u0026rdquo; but this is actually a historical illusion shaped in reverse by the outcome of the Industrial Revolution.\nI. The \u0026ldquo;Rear-View Mirror\u0026rdquo; Illusion of History Today, many Chinese people have an almost unconscious belief: the West seems inherently more advanced than China.\nBut this is a typical historical illusion, \u0026ldquo;reverse-engineered\u0026rdquo; by the outcome of the Industrial Revolution.\nWe are used to looking back from the pinnacle of modern civilization, thus applying a filter of \u0026ldquo;the West was destined to lead\u0026rdquo; to history.\nIn fact, if we view human civilization as a marathon, China was the front-runner, far ahead, for most of the race.\nIt wasn\u0026rsquo;t until after the start of the Age of Discovery in the 15th century that the scales truly began to tip.\nFor the sake of comparison, let\u0026rsquo;s set our coordinates to the year 1100 AD—the mid-to-late period of the Northern Song Dynasty.\nYou will find that in terms of:\nUrban scale Institutional efficiency Financial system And even the freedom of ordinary people On these hard metrics, the Song Dynasty of that era was like a \u0026ldquo;dimensional strike\u0026rdquo; from the future.\nWe misjudge history because we look back at the process from the standpoint of the outcome.\nII. Cities: Commercial Civilization vs. War Fortresses Want to understand the cities of the Song Dynasty? You don\u0026rsquo;t need tedious data, just look at one painting: Along the River During the Qingming Festival.\nThe protagonists of this painting are not emperors or myths, but:\nBustling merchants Resting citizens Busy boatmen on the Bian River Rows of taverns and pharmacies This isn\u0026rsquo;t just \u0026ldquo;lively\u0026rdquo;; it\u0026rsquo;s a highly mature urban economic structure.\nA Quick Comparison Northern Song\u0026rsquo;s Bianliang vs. Contemporary Europe (e.g., Paris / London)\nDimension Northern Song\u0026rsquo;s Bianliang (Kaifeng) Contemporary Europe (e.g., Paris) Population Scale 1 million+ (The world\u0026rsquo;s first 24-hour city) Only a few thousand to tens of thousands Lifestyle Curfews completely abolished, night markets ran all night City gates shut tight, silent after dark Core Function Commercial, consumption, and social center Refuge, fortification, node of power In a nutshell:\nThe cities of the Song Dynasty were \u0026ldquo;living societies,\u0026rdquo; while European cities were merely \u0026ldquo;components of feudal lords.\u0026rdquo;\nIII. Institutions: A Mature State Apparatus vs. A Fragmented Feudal Puzzle In 1100, the Song Dynasty operated a centralized system far ahead of its time.\nCivilian Governance:\nOfficials were centrally appointed, assessed, and rotated, virtually eliminating local hereditary fiefdoms.\nA Unified Nation:\nA unified tax system, laws, and household registration allowed for the efficient cross-regional allocation of finances and grain.\nMeanwhile, contemporary Europe was more like a fragmented \u0026ldquo;jigsaw puzzle\u0026rdquo;:\nThe king was often just the \u0026ldquo;largest lord.\u0026rdquo; Power was carved up by the nobility and the Church. Peasants directly faced harsh private lords, not national law. While the Song Dynasty governed by institutions, Europe was held together by bloodlines and feudal contracts.\nEurope didn\u0026rsquo;t begin to truly form nation-states until the 18th century.\nWhether a country can function long-term depends on whether it relies on institutions or bloodlines.\nIV. Talent: The Imperial Examination vs. Bloodline Theory (The Truth of Social Mobility) This is the most \u0026ldquo;modern-feeling\u0026rdquo; aspect of ancient Chinese institutions: the imperial examination system.\nIn 1100s China, a poor scholar from a remote village could, through study and examination, eventually enter the core of power in Kaifeng.\nThis logic of \u0026ldquo;fair competition and merit-based selection\u0026rdquo; broke the monopoly of bloodlines on power.\nIn contrast to contemporary Europe:\nwhich practiced an extremely rigid system of hereditary aristocracy.\nEurope:\nIf you were born a peasant, you remained a peasant for life. The path to advancement was locked by bloodline, leaving the lower-class elite with no hope.\nChina:\n\u0026ldquo;A farmer\u0026rsquo;s son in the morning, an official in the emperor\u0026rsquo;s court by evening.\u0026rdquo; The examination system provided continuous social mobility, absorbing the nation\u0026rsquo;s brightest minds into its administration.\nWhile the Song Dynasty governed with \u0026ldquo;brainpower,\u0026rdquo; Europe relied on the \u0026ldquo;lottery of birth\u0026rdquo; to determine one\u0026rsquo;s fate.\nV. Military: A \u0026ldquo;Great Power War Machine,\u0026rdquo; Not \u0026ldquo;Poor and Weak\u0026rdquo; For a long time, we have seriously misunderstood the military strength of the Song Dynasty.\nThe \u0026ldquo;weakness\u0026rdquo; of the Song Dynasty was not because it wasn\u0026rsquo;t strong, but because it faced the most brutal and sophisticated peak of nomadic military power in human history.\nOrganizational Power:\nThe Northern Song had a standing army of 800,000 to 1.2 million soldiers, fully supported by the state treasury.\nLogistical System:\nA systematic supply of military rations, payment of soldiers\u0026rsquo; salaries, and standardized weapon manufacturing.\nThis was already the prototype of a modern national war machine.\nIn contrast to contemporary Europe:\nThere was no national standing army. The military core consisted of feudal knights. To wage war, a king had to \u0026ldquo;beg and plead\u0026rdquo; to mobilize his lords. Actual forces typically numbered only a few thousand. Although ancient China and Europe never fought directly, we can make an indirect comparison:\nThe Xiongnu, driven away by the Han Dynasty, became Europe\u0026rsquo;s nightmare (the Scourge of God) and shaped what would become Hungary.\nThe Turks, repelled by the Tang Dynasty, re-emerged in West Asia as the Ottoman Turks and personally brought an end to the Eastern Roman Empire.\nWhat were \u0026ldquo;remnant forces\u0026rdquo; to a Chinese dynasty were \u0026ldquo;gods of war\u0026rdquo; in Europe.\nVI. Well-being: Who Were the True \u0026ldquo;Freemen\u0026rdquo;? This is the most perception-shattering point: the people of ancient China were likely much happier than medieval Europeans.\n① Fuller Pockets (Tax Burden) Song Dynasty:\nMainly state taxes, with a typical rate of about 5%–10%, and legally guaranteed tax relief mechanisms during disaster years.\nEurope:\nTriple exploitation, with a combined annual extraction rate as high as 25%–35%.\n② More Personal Freedom (Personal Rights) Song Dynasty:\nLegally, there were no serfs. Tenant farmers and landlords had an economic contractual relationship, and tenants could freely migrate and change professions.\nEurope:\nSerfdom was rampant. Serfs could not marry freely, could not leave the land, and were not considered people but the \u0026ldquo;property\u0026rdquo; of their lords.\nThe conflict in the Song Dynasty was the \u0026ldquo;gap between rich and poor\u0026rdquo;; the conflict in Europe was \u0026ldquo;personal bondage.\u0026rdquo;\nVII. The Turning Point: Why Did We \u0026ldquo;Lose\u0026rdquo; Later On? Since China had such an early and stable start, why did it fall behind later?\nThe true turning point in history was on the high seas.\nZheng He vs. Columbus: Two Completely Different Logics Zheng He (An Imperial Project):\nGrand in scale, its core logic was \u0026ldquo;to show off.\u0026rdquo; The emperor paid for it to gain the prestige of having all nations pay tribute.\nThe result:\nHe brought back giraffes from distant Africa, bringing back prestige, but not sustainable profits.\nWhen the emperor died, the system automatically shut down.\nEuropean Voyages (Capitalist Expansion):\nMerchants paid, the state protected, and the core logic was \u0026ldquo;plunder and colonization.\u0026rdquo;\nThe result:\nSilver and slaves flowed endlessly into Europe, trade was monopolized by European states and capital, and the Industrial Revolution was ignited.\nIt wasn\u0026rsquo;t until the sturdy ships and powerful cannons of the Western powers battered down the gates of the Qing Dynasty that the Chinese suddenly discovered that the world had, unbeknownst to them, already completed an epoch-making leap.\nVIII. Deep Reflection: The Three \u0026ldquo;Constraining Bands\u0026rdquo; That Held Us Back China\u0026rsquo;s eventual decline was, at its root, due to systemic differences in three dimensions. The first two were pointed out by young Chinese intellectuals as early as the May Fourth Movement a century ago.\n① Technology Without Scientific Thought (A Difference in Mindset) Ancient China had strong technological accumulation (like the Nine Chapters on the Mathematical Art and the Four Great Inventions), but it always lacked a systematic scientific framework.\nDuring the Renaissance, Europe rediscovered the rational thought of ancient Greece. Historical Article: How Europe Once \u0026ldquo;Lost\u0026rdquo; an Entire Civilization—Why Did Ancient Greek Rational Knowledge Disappear in Medieval Europe?\nThis formed:\nLogical deduction Mathematical expression A spirit of falsifiable experimentation Technology is the summary of experience; science is the explosion of logic.\n② Unitary Power vs. Checks and Balances (A Difference in Political Logic) Ancient China was a highly autocratic monarchy, with decision-making pressure concentrated on the emperor alone.\nThis is a \u0026ldquo;single point of failure\u0026rdquo; system:\nIf the emperor is wise, the nation prospers. If the emperor is incompetent, the entire system collapses. Europe, on the other hand, had a long tradition of republicanism and proto-parliaments.\nHistorical Article: Why Did Europe Move Towards Democracy? The Republican Tradition Was Not an Accidental Historical Choice\nThough often chaotic, it established a self-correcting mechanism that did not depend on an enlightened ruler.\n③ The \u0026ldquo;Path Dependency\u0026rdquo; of a Unified Empire vs. The \u0026ldquo;Evolution\u0026rdquo; of Multi-State Competition China\u0026rsquo;s geography is enclosed and easily unified. Coupled with a highly uniform script and culture, it lacked internal competitive pressure for long periods.\nA successful system would be endlessly replicated, eventually falling into the \u0026ldquo;dynastic cycle.\u0026rdquo;\nWhereas Europe:\nPeninsulas, islands, and seas fragmented the space. Multiple states coexisted and competed with each other. Failed systems were eliminated. Successful innovations were imitated. China won with stability but lost the impetus for mutation within that stability;\nEurope lost in chaos but stumbled through that chaos to open the door to modernization.\nConclusion: Not Pride, Nor Inferiority, but Clarity Looking back at this history is not about indulging in past glories or wallowing in self-pity, but about achieving clarity.\nModern China\u0026rsquo;s decline was not because we were \u0026ldquo;never capable,\u0026rdquo; but because during the critical window for a breakthrough, we were locked in by the very path that once made us proud.\nTo know where you are going, you must first see where you have been.\n","permalink":"https://www.houdao.org/en/ancient-china-a-civilization-that-once-left-europe-far-behind/","summary":"\u003cp\u003eWe are accustomed to thinking that \u0026ldquo;the West has always been ahead of China,\u0026rdquo; but this is actually a historical illusion shaped in reverse by the outcome of the Industrial Revolution.\u003c/p\u003e\n\u003ch2 id=\"i-the-rear-view-mirror-illusion-of-history\"\u003eI. The \u0026ldquo;Rear-View Mirror\u0026rdquo; Illusion of History\u003c/h2\u003e\n\u003cp\u003eToday, many Chinese people have an almost unconscious belief: \u003cstrong\u003ethe West seems inherently more advanced than China.\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003eBut this is a typical historical illusion, \u0026ldquo;reverse-engineered\u0026rdquo; by the outcome of the Industrial Revolution.\u003c/p\u003e","title":"Ancient China: A Civilization That Once Left Europe Far Behind"},{"content":"Throughout human history, a certain class of questions has been asked repeatedly for millennia.\nWhat is time? Does life have meaning? Must we fear death? Do we truly have free will? Where do good and evil come from? These questions have long been categorized under \u0026ldquo;philosophy\u0026rdquo; or \u0026ldquo;metaphysics,\u0026rdquo; shrouded in layers of myth, religion, metaphor, and strong emotion.\nBut today, with the advancements in physics, neuroscience, and information theory, we have the opportunity for the first time to—\nre-answer these questions using only science and reason, without resorting to faith or emotion.\nBefore we begin, it\u0026rsquo;s necessary to establish a common understanding:\nWhat is a \u0026ldquo;scientific answer\u0026rdquo;?\nI. The Boundaries of Science: A Redefinition Here, \u0026ldquo;science\u0026rdquo; is not a collection of conclusions, nor a value stance, but a continuously operating cognitive methodology.\nIt must satisfy at least the following conditions:\nObservability: The subject of discussion must leave observable traces in the physical world, not be purely imaginary. Inductiveness: Laws are derived from the accumulation of facts, not from a priori assumptions. Verifiability: Conclusions must be able to withstand experimental or real-world testing, not just be logically self-consistent. Reproducibility: Laws do not depend on the identity of the observer (such as an \u0026ldquo;enlightened one\u0026rdquo; or a \u0026ldquo;genius\u0026rdquo;); the same results should be obtained under the same conditions. Based on this methodology, we will attempt to provide contemporary, rational answers to the following ancient questions.\nII. What is Time? Traditional Intuition:\nTime is a long river that flows uniformly, is absolute, and is shared by everyone.\nScientific Answer:\nTime is not an independent entity, but a geometric property of spacetime.\nIn Einstein\u0026rsquo;s theory of general relativity, there is no absolute time, nor is there absolute space.\nWe exist in a unified four-dimensional spacetime structure.\nThe speed of light, c, is not a speed constant in the ordinary sense, but a fundamental scale in the spacetime structure used to unify the metrics of space and time.\nIn the \u0026ldquo;block universe\u0026rdquo; model, time does not exist as a \u0026ldquo;flow,\u0026rdquo; but is presented as a whole dimension within the spacetime structure, just like space itself.\nThe reason humans perceive the passage of time is not because time itself is special, but because our biological structure restricts us to moving in only one direction along the time dimension.\nThe so-called \u0026ldquo;present\u0026rdquo; is not a special moment in the universe, but a perspectival effect created by our perceptual mechanisms.\nIII. What is the Meaning of Life? Common Answers:\nHappiness, success, legacy, or some emotional \u0026ldquo;sense of mission.\u0026rdquo;\nRational Answer:\nMeaning is not emotional solace, but an objective function at the level of civilization.\nDetached from individual experience, the logic of humanity\u0026rsquo;s existence as a complex system can be summarized as:\nTo locally delay entropy increase, and to continuously understand, compress, and model the laws of the universe.\nThis is not feel-good rhetoric, but a fact of civilizational evolution:\nDiscovering natural laws and building physical models; Transforming the universe\u0026rsquo;s information structure into a form that is understandable and transmissible by humans; Individuals will perish, but the cognitive structures built by civilization can continue to endure at the information level. IV. How to Face Death? Intuitive Reaction:\nFear, avoidance, or hope for some form of eternal life.\nRational Answer:\nDeath is a deterministic event with a 100% probability.\nFrom a biological perspective, death is part of the evolutionary mechanism, providing necessary space for genetic renewal and system reorganization.\nFor a deterministic event, fear can neither change its probability of occurrence nor yield any positive returns.\nSince death treats all beings equally, it loses its threat to the individual.\nCalmly accepting the inevitable is the optimal strategy for a rational system when facing natural laws.\nV. Where Does Consciousness Come From? Does Free Will Exist? Scientific Perspective:\nConsciousness is an emergent phenomenon in complex systems.\nThe human brain is composed of tens of billions of neurons interconnected by electrical and chemical signals.\nThis structure is highly similar at a logical level to modern large-scale AI models:\nHardware Layer: Neurons and synaptic weights; Training Process: Experience, learning, and sensory input; Emergent Result: When the system\u0026rsquo;s complexity surpasses a critical point, intelligence and consciousness emerge. Consciousness is not some supernatural entity, but a natural product of a self-organizing system at a high level of complexity.\nAs for free will, it doesn\u0026rsquo;t necessarily mean \u0026ldquo;transcending physical causality,\u0026rdquo; but more likely stems from the incomputability and unpredictability of complex systems.\nThis macroscopic uncertainty, rooted in complexity, is perceived at the subjective level as \u0026ldquo;free choice.\u0026rdquo;\nVI. If There Is No Absolute Time, Does Causality Still Exist? Scientific Answer:\nYes. But causality is not equivalent to \u0026ldquo;temporal sequence\u0026rdquo;; it is equivalent to structural constraint.\nIn modern physics and logical frameworks, causality should be understood as:\nThe accessibility of state transitions within a given spacetime and information structure.\nCausality is not about who \u0026ldquo;pushed\u0026rdquo; whom; Causality is the structure itself limiting possibilities—certain states are permitted, while others are structurally impossible. Even from a perspective that does not rely on linear time, the structure still rigorously dictates the evolutionary logic of the world.\nCausality is not an appendage of time, but a constraint condition of the structure itself.\nVII. Is Choice Real? Scientific Answer:\nThe answer depends on the dimension from which you observe.\nIn a high-dimensional structure:\nAll possible paths exist simultaneously as a single geometric structure; there is no \u0026ldquo;choice.\u0026rdquo; In a low-dimensional projection:\nThe observer can only see a cross-section of the high-dimensional structure, making \u0026ldquo;choice\u0026rdquo; real and unavoidable. This is analogous to the projection of a three-dimensional object onto a two-dimensional plane:\nThe shadow is not false; it is the necessary manifestation of a higher-dimensional reality in a lower-dimensional world.\nTherefore:\nChoice is a geometric position from a high-dimensional perspective,\nbut a real decision in a low-dimensional world.\nVIII. What is Morality? Where Do Good and Evil Come From? Traditional Understanding:\nGood and evil come from divine commands, innate conscience, or some supernatural value system.\nRational Answer:\nGood and evil are not the universe\u0026rsquo;s moral judgments, but the natural results of structural stability.\nThe universe does not \u0026ldquo;judge\u0026rdquo; actions themselves, but different structures have different capacities for survival.\nFrom the perspective of information theory and complex systems, the universe tends to preserve structures that are:\nModelable; Predictable and explainable; Complex, stable amidst perturbations, and continuously evolving. When this structural preference is projected onto human society, it forms what we call \u0026ldquo;morality.\u0026rdquo;\nActions that promote the long-term stability, cooperation, and continuation of a complex system are called \u0026ldquo;good\u0026rdquo;; Actions that undermine system stability and reduce overall complexity are called \u0026ldquo;evil.\u0026rdquo; Good and evil are not labels bestowed by the universe, but empirical generalizations made by humans over long-term evolution about which behaviors contribute to the sustainable existence of the system.\nFrom this perspective:\nMorality is not an emotional declaration; Not a supernatural command; But an evolved structural constraint. Its purpose is not to serve individual emotions, but the sustainability of the complex system itself.\nIX. Conclusion: When Reason Intervenes, the Questions Become Obsolete When we try to re-examine these ancient questions with science, an interesting phenomenon occurs:\nSome questions are solved; Some questions are redefined; And some questions simply become obsolete. Time no longer needs myth,\nMeaning no longer relies on emotion,\nGood and evil no longer appeal to the transcendental,\nDeath no longer creates fear.\nThis is not the world becoming colder, but us finally beginning to understand it using the language of structure, laws, and verifiability.\nWhen our focus shifts from \u0026ldquo;demanding meaning\u0026rdquo; to \u0026ldquo;understanding structure,\u0026rdquo; from \u0026ldquo;moral declarations\u0026rdquo; to \u0026ldquo;system stability,\u0026rdquo; the world becomes unprecedentedly clear, transparent, and calm.\nWhen the questions become obsolete,\nperhaps that is where true understanding begins.\n","permalink":"https://www.houdao.org/en/answering-philosophical-questions-with-science-a-rational-reconstruction-of-time-meaning-consciousness-causality-and-morality/","summary":"\u003cp\u003eThroughout human history, a certain class of questions has been asked repeatedly for millennia.\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003eWhat is time?\u003c/li\u003e\n\u003cli\u003eDoes life have meaning?\u003c/li\u003e\n\u003cli\u003eMust we fear death?\u003c/li\u003e\n\u003cli\u003eDo we truly have free will?\u003c/li\u003e\n\u003cli\u003eWhere do good and evil come from?\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003eThese questions have long been categorized under \u0026ldquo;philosophy\u0026rdquo; or \u0026ldquo;metaphysics,\u0026rdquo; shrouded in layers of myth, religion, metaphor, and strong emotion.\u003c/p\u003e\n\u003cp\u003eBut today, with the advancements in physics, neuroscience, and information theory, we have the opportunity for the first time to—\u003c/p\u003e","title":"Answering Philosophical Questions with Science: A Rational Reconstruction of Time, Meaning, Consciousness, Causality, and Morality"},{"content":" **\u0026raquo;\u0026gt;First, you need to obtain a personal digital certificate Preparation of Materials for Spanish Non-Lucrative Visa Renewal Submission period: You can submit your application online starting from 2 months before your NIE card expires up to 3 months after it expires.\nMany documents need to be scanned. It\u0026rsquo;s best to buy an all-in-one color printer and scanner. Set the scanning resolution not too high, but not so low that it becomes blurry. Scan to PDF format. The official requirement is that a single document cannot exceed 6MB. With the right settings, a full passport scan won\u0026rsquo;t exceed 3MB.\nThe residency renewal is for a 2-year visa, so the financial proof required is double that of the initial non-lucrative visa application, which is 8 times the IPREM. For each additional family member, an extra 2 times the IPREM is needed. Based on the official 2024 data from Spain where the annual IPREM is €7,200, a family of three would need 12 times the IPREM, which is €7,200 × 12 = €86,400\nMain Applicant Scanned copy of the entire passport (if you\u0026rsquo;ve renewed your passport while residing in Spain, the old passport must also be scanned and uploaded) Bank certificate of account ownership and balance Bank statements for the last six months Certificate of average balance for the last 6 months (provide if available) Scanned copy of the front and back of the NIE card New annual insurance policy, as well as previous insurance policies from your residency period Most recent empadronamiento certificate (issued within the last 3 months) Scanned copy of the rental contract or property deed Proof of payment for form tasa 790-052 Dependent Applicant Scanned copy of the entire passport Bank certificate of account ownership and balance Bank statements for the last six months Certificate of average balance for the last 6 months Scanned copy of the front and back of the NIE card New annual insurance policy, as well as previous insurance policies from your residency period Most recent empadronamiento certificate Rental contract or property deed Proof of payment for form tasa 790-052 Child Scanned copy of the entire passport School enrollment certificate Travel authorization from the other parent Front and back of the NIE card New annual insurance policy, as well as previous insurance policies from your residency period Most recent empadronamiento certificate Legalized and apostilled birth certificate Proof of payment for form tasa 790-052 Have your personal digital certificate ready. Minors\u0026rsquo; applications are submitted by their legal guardians.\nHave the AutoFirma software ready.\nSubmission Portal:\nhttps://sede.administracionespublicas.gob.es/pagina/index/directorio/mercurio2\nThis link may change. You can also find this portal from the homepage of the Spanish Public Administration\u0026rsquo;s electronic headquarters.\nIt is recommended to first translate the help and introduction pages on the official website to fully understand the process before submitting.\nRough steps:\nPersonal Access Select Digital Certificate Submit Application Select \u0026ldquo;Submit New Application\u0026rdquo; (You can add supplementary documents here after receiving an application number) Select EX-01 Select \u0026ldquo;First Renewal\u0026rdquo; for non-lucrative residency (for the second renewal, select \u0026ldquo;Second Renewal\u0026rdquo;) Fill out the form. You can use one person\u0026rsquo;s digital certificate to fill out the forms for the whole family. Remember to check the box for minors. Select \u0026ldquo;Submit Electronically\u0026rdquo; Upload the scanned copies of the required renewal documents. Note: It\u0026rsquo;s best to accurately label the filenames in Spanish with the content of the document to make it easier for the reviewing officer. Some points to note:\nIf you upload the wrong document or miss one during the initial submission, don\u0026rsquo;t worry. Once the application is being processed and you have received an application number, you can select \u0026ldquo;Add Documents\u0026rdquo; in step 4 to supplement or delete documents.\nAfter submitting the application, you should generally receive a notification of receipt within 2-3 working days. If not, please check if your application was submitted correctly.\nBe sure to register on the administrative notifications website https://dehu.redsara.es/ using your digital certificate and authorize the receipt of electronic notifications.\nNotifications regarding supplementary materials, approval, etc., will be issued on this site.\nThe processing time varies by location. Cities with smaller populations tend to have faster processing times. If you don\u0026rsquo;t receive a decision within 3 months, according to Spanish law, it is considered approved by default (positive administrative silence). The immigration offices of each Spanish province publish their processing progress monthly. For example, the province of Valencia provides monthly immigration processing progress reports for download as PDF documents on this page.\nhttps://mpt.gob.es/portal/delegaciones_gobierno/delegaciones/comunidad_valenciana/servicios/extranjeria.html\nIf your application has been in the \u0026ldquo;processing\u0026rdquo; state for more than 3 months, you can inquire with the immigration office through the link below.\nhttps://centrodeservicios.redsara.es/ayuda/consulta/ExtranjeriaCG\nYou can write the inquiry in Spanish like this: My application file number is: xxxxx, submitted on [date], which was x months ago, and it is still in process. Due to [reason], I need my application to be processed as soon as possible. Thank you very much.\nHomepage of the Spanish e-Government Services website:\nhttps://sede.administracionespublicas.gob.es/\nYou can also go directly, though the link may change: https://icp.administracionelectronica.gob.es/icpplus/citar\nSelect Foreigners \u0026gt; Immigration Appointment \u0026gt; Access Procedure \u0026gt; Select Province \u0026gt; Select Office (optional, will be assigned randomly; offices in larger cities are harder to book and have longer waits) \u0026gt; Select Procedure (Fingerprinting) \u0026gt; Fill in applicant information \u0026gt; Confirm appointment. After successfully booking, print and save the appointment confirmation.\nBooking tip: Appointments are usually released around 8:00 AM and 2:00 PM on weekdays. If you don\u0026rsquo;t want to keep refreshing the page yourself, you can pay a scalper.\nOfficial download page for EX-17 and tasa 790-012:\nhttps://sede.policia.gob.es/portalCiudadano/_es/tramites_extranjeria_tramite_tarjeta_residencia_residenciaytrabajo.php\nFill out and print the EX-17 form\nTip:\nBecause the way Chinese people write English letters and numbers can be very different from Spanish handwriting conventions, they may not recognize them. It is recommended to use a PDF editor to fill out the form on the computer before printing it. You only need to sign your name in Chinese in the signature field. Pay the fee for tasa 790-012. Once ready, take the following documents to the police station for your appointment to renew your residence card and provide fingerprints. Attendance is mandatory for everyone, including minors:\nAppointment confirmation Completed EX-17 form Tasa 790-012 form Receipt for payment of tasa 790-012 Passport-style photo with a white background. Both 2-inch and 1-inch sizes are acceptable; it\u0026rsquo;s just for scanning. Residence approval letter, downloaded and printed from DEHú. Passport NIE card Empadronamiento certificate. The one you obtained for the renewal application is sufficient; you don\u0026rsquo;t need a new one. The queuing process may differ at each police station. I still recommend booking an appointment at a police station in a smaller town. This is because smaller towns have fewer people, so you won\u0026rsquo;t have to wait in long lines, and often, smaller police stations don\u0026rsquo;t require one appointment per person; you can process the whole family with a single appointment. In large cities like Valencia, there are too many people booking, so it\u0026rsquo;s strictly one person per appointment.\nAfter giving your fingerprints, you will receive a receipt for card collection. Once the NIE card is ready, usually in about a month, you can go to the police station to pick it up. The cardholder must go in person. Some places require an appointment for card collection.\n","permalink":"https://www.houdao.org/en/diy-guide-for-renewing-spanish-non-lucrative-residency-online/","summary":"\u003cul\u003e\n\u003cli\u003e**\u0026raquo;\u0026gt;First, you need to obtain a personal digital certificate\u003c/li\u003e\n\u003c/ul\u003e\n\u003ch2 id=\"preparation-of-materials-for-spanish-non-lucrative-visa-renewal\"\u003ePreparation of Materials for Spanish Non-Lucrative Visa Renewal\u003c/h2\u003e\n\u003cp\u003eSubmission period: You can submit your application online starting from 2 months before your NIE card expires up to 3 months after it expires.\u003c/p\u003e\n\u003cp\u003eMany documents need to be scanned. It\u0026rsquo;s best to buy an all-in-one color printer and scanner. Set the scanning resolution not too high, but not so low that it becomes blurry. Scan to PDF format. The official requirement is that a single document cannot exceed 6MB. With the right settings, a full passport scan won\u0026rsquo;t exceed 3MB.\u003c/p\u003e","title":"DIY Guide for Renewing Spanish Non-Lucrative Residency Online"},{"content":"When many people use an AI chatbot for the first time, they might feel like it \u0026lsquo;remembers\u0026rsquo; what was said before. For example, if you ask a question and then follow up on it a little later, it can still connect the dots. This leads to a common question: Does AI actually have memory?\nLet\u0026rsquo;s start with the conclusion: An AI\u0026rsquo;s \u0026lsquo;memory\u0026rsquo; is not the file-based memory we imagine. It relies on predicting with parameter weights, not on hard-drive-style storage.\n1. An AI\u0026rsquo;s Memory Is Actually Similar to the Human Brain An AI doesn\u0026rsquo;t save data verbatim like a computer\u0026rsquo;s hard drive.\nIts \u0026lsquo;memory\u0026rsquo; comes from its vast parameter weights.\nFor example, if you ask it to recite the poem \u0026lsquo;A Spring Morning\u0026rsquo;—\u0026lsquo;春眠不觉晓，处处闻啼鸟\u0026rsquo;.\nThe reason the AI can recite it completely isn\u0026rsquo;t because it saved the poem word-for-word, but because during training, its parameter weights learned the patterns of the language: after \u0026lsquo;春眠不觉\u0026rsquo;, the most likely character to appear is \u0026lsquo;晓\u0026rsquo;.\nThis is very similar to how the human brain remembers: when we recall information, we also rely on the weighted connections between neurons to predict and reconstruct, rather than mechanically storing it like a computer.\n2. Why Does It Seem Like AI Can Remember Conversations? The reason you feel like the AI \u0026lsquo;remembers what you said\u0026rsquo; is actually because the system repackages the previous conversation and feeds it back to the model with each new query.\nSome systems append the full history, while others compress or summarize it before passing it to the model.\nSo, the AI\u0026rsquo;s appearance of \u0026lsquo;remembering\u0026rsquo; is actually the result of an external prompt, not true memory.\n3. Conversations Cannot Change an AI\u0026rsquo;s Memory This is a crucial point: your conversations with an AI do not change its parameter weights.\nThe model\u0026rsquo;s weights are only updated during training and upgrades, not during everyday conversations.\nIn other words, even if you tell it a hundred times, \u0026lsquo;Remember my name is Xiaoming,\u0026rsquo; the AI\u0026rsquo;s parameters won\u0026rsquo;t change. The next time it interacts with you, it might still have no idea who you are.\nTherefore, an AI can\u0026rsquo;t remember your conversation on its own; it relies on \u0026lsquo;appending the history to the prompt\u0026rsquo; to maintain continuity.\n4. Why Do AIs Make More Mistakes in Long Conversations? Every model has a token limit (a maximum capacity for processing text).\nWhen the conversation history gets longer:\nEarly parts of the conversation might be truncated, so the AI naturally \u0026lsquo;forgets\u0026rsquo; them; If compression or indexing is incomplete, its understanding can become skewed; Once the capacity is exceeded, the AI can get confused, and its error rate increases. 5. Summary An AI\u0026rsquo;s memory is like a human brain, not a hard drive. It relies on parameter weights for prediction, not verbatim storage. When it seems to remember a conversation, it\u0026rsquo;s because the system is \u0026lsquo;appending the history to the prompt\u0026rsquo;. Conversations cannot change an AI\u0026rsquo;s parameter weights; true updates only happen when the model is upgraded. When a conversation gets too long and exceeds the model\u0026rsquo;s capacity, the AI is more likely to make mistakes. So, don\u0026rsquo;t think of an AI as a computer that \u0026lsquo;saves files.\u0026rsquo; It\u0026rsquo;s more like an instant prediction machine: relying on weighted connections to calculate the next most probable word and sentence in real-time.\n","permalink":"https://www.houdao.org/en/does-ai-have-memory/","summary":"\u003cp\u003eWhen many people use an AI chatbot for the first time, they might feel like it \u0026lsquo;remembers\u0026rsquo; what was said before. For example, if you ask a question and then follow up on it a little later, it can still connect the dots. This leads to a common question: Does AI actually have memory?\u003c/p\u003e\n\u003cblockquote\u003e\n\u003cp\u003eLet\u0026rsquo;s start with the conclusion: An AI\u0026rsquo;s \u0026lsquo;memory\u0026rsquo; is not the file-based memory we imagine. It relies on predicting with parameter weights, not on hard-drive-style storage.\u003c/p\u003e","title":"Does AI Have Memory?"},{"content":"In Spain, commercial parking lots are generally expensive. A few hours can easily cost tens of euros, which is a significant expense. To save money, consider using free roadside parking spots or the paid blue zone parking spaces provided by the municipality.\nBlue zone parking spaces are cheaper, costing around €1 per hour. However, paying manually can be a hassle. You need to go to a nearby payment machine, enter your license plate number and parking duration, and pay with coins or a card. If you leave early, the refund process is also quite complicated. Therefore, it\u0026rsquo;s highly recommended to use a convenient parking payment app for online payments and flexible billing, which is more economical and practical.\nAdditionally, taxi fares to Spanish airports are high. Traveling from a smaller city to Madrid\u0026rsquo;s airport by train or bus can be troublesome and time-consuming. It would be much more convenient to park your own car near the airport and drive home directly upon your return. However, official airport parking is expensive, and long-term parking fees can be a major expense. So, how can you save money? In fact, there are specialized long-term parking lots near Spanish airports, with costs around €4 per day. This option is the most cost-effective, especially when traveling in a group.\n1. Essential Apps for Blue Zone Street Parking in Spain: Telpark \u0026amp; EasyPark Telpark: The Top Choice for Local Residents Telpark is a widely used roadside parking payment app in Spain, covering blue zone parking spaces in most cities across the country and numerous public parking lots.\nTelpark Features:\nMobile Payment: Pay online anytime, anywhere, no cash needed. Remote Renewal Reminders: Get automatic reminders before your parking expires, allowing you to extend your time and avoid fines. Parking Location Log: Automatically records your parking spot to help you find your car easily. Convenient Bill Management: Check and download your parking invoices at any time. Target Users: Daily city commuters.\nMunicipal parking spaces usually have a maximum stay of 2 hours. If you need to park for longer, you can end the current session in the app and immediately start a new one.\nEasyPark: A Must-Have for European Road Trips EasyPark is ideal for users who frequently travel across European countries. It covers multiple European nations, making it especially suitable for cross-border road trips.\nEasyPark Features:\nMulti-Country Coverage: One app for multiple European countries, saving you the trouble of downloading different apps. Real-Time Parking Search: Quickly find available parking spots nearby. Flexible Billing: Pay only for the time you actually park. Smart Reminders: Avoid fines for overstaying your parking time. Target Users: Frequent cross-border road trippers in Europe.\n2. Money-Saving Tips for Long-Term Airport Parking: Parkos Parkos is a website that consolidates information from various long-term parking lots near airports, offering secure, convenient, and affordable parking solutions.\nAdvantages of Parkos:\nTransparent and Competitive Pricing: Compare prices from multiple airport parking lots to quickly find the best deal. Variety of Services: Includes indoor and outdoor parking, shuttle bus transfers, and valet services. Convenient Online Booking: Book online in advance to avoid waiting in line. Guaranteed Parking Security: Partner parking lots are thoroughly vetted for safety and reliability. How to Use Parkos: Visit the official website: parkos.es Enter the airport name and your parking dates to see the options. Compare the prices and services of different parking lots to choose the most suitable one. Pay online and receive your booking confirmation. Target Users: Travelers who need long-term parking near the airport.\nSummary Whether you\u0026rsquo;re dealing with daily city parking or long-term airport parking in Spain, Telpark, EasyPark, and Parkos can help you solve your parking problems easily, saving you money and hassle.\nGo ahead and save these useful apps and websites to enjoy a convenient parking experience in Spain!\n","permalink":"https://www.houdao.org/en/essential-apps-for-blue-zone-street-parking-in-spain-money-saving-tips-for-long-term-airport-parking/","summary":"\u003cp\u003eIn Spain, commercial parking lots are generally expensive. A few hours can easily cost tens of euros, which is a significant expense. To save money, consider using free roadside parking spots or the paid blue zone parking spaces provided by the municipality.\u003c/p\u003e\n\u003cp\u003eBlue zone parking spaces are cheaper, costing around €1 per hour. However, paying manually can be a hassle. You need to go to a nearby payment machine, enter your license plate number and parking duration, and pay with coins or a card. If you leave early, the refund process is also quite complicated. Therefore, it\u0026rsquo;s highly recommended to use a convenient parking payment app for online payments and flexible billing, which is more economical and practical.\u003c/p\u003e","title":"Essential Apps for Blue Zone Street Parking in Spain \u0026 Money-Saving Tips for Long-Term Airport Parking"},{"content":"Medieval Christian Europe experienced a systematic interruption of Greek mathematics, philosophy, and science due to linguistic fragmentation, the collapse of the educational system, and religious monopoly.\nIn contrast, Greek knowledge was fully preserved, translated, and developed in the Byzantine and Islamic worlds. It eventually returned to Europe through cross-civilizational transfer, igniting the Renaissance.\nMany people subconsciously assume that:\nSince Europe is the successor to ancient Greece and Rome,\nthen mathematics, philosophy, and science\nshould have been passed down naturally through the ages.\nBut the real history is exactly the opposite—\nIn medieval Christian Europe, the rational knowledge of ancient Greece experienced an almost systematic interruption. The ones who truly preserved, translated, studied, and further developed it were, in fact, the Islamic world.\nThis is not a value judgment, but a historical outcome formed by successive ruptures in language → institutions → religion → politics.\nI. Ancient Greece: The Starting Point of Rational Civilization (c. 6th–3rd centuries BCE)\nBeginning in the 6th century BCE, ancient Greece achieved the first true rational leap in human history:\nMathematics was written into an axiomatic system: Elements (Euclid) Philosophy was written as logical arguments (Plato, Aristotle) Natural phenomena began to be explained without mythology But this civilization had an extremely fragile prerequisite:\nIt was highly dependent on language, educational systems, and the transmission of manuscripts.\nII. Plato and Aristotle Not Just \u0026ldquo;Ideas,\u0026rdquo; but a Complete System of Original Works Ancient Greek philosophy was not a collection of \u0026ldquo;viewpoints\u0026rdquo; pieced together by later generations, but a systematic body of knowledge constituted by original works.\nPlato (c. 427–347 BCE)\nHe conducted philosophical training in the form of dialogues:\nThe Republic: Justice, the state, the philosopher-king Symposium: How love ascends from the sensual to the ideal Phaedo: The immortality of the soul Theaetetus: What is \u0026ldquo;knowledge\u0026rdquo; At its core is the Theory of Forms: the world of reason is superior to the world of senses.\nAristotle (384–322 BCE)\nHe was the first person in human history to systematically organize all branches of knowledge:\nLogic: Organon Ontology: Metaphysics Natural Sciences: Physics, On the Soul Biology: History of Animals Political Ethics: Nicomachean Ethics, Politics 📌 He laid the foundation for logical reasoning, classification methods, and empirical observation.\nIII. A Decisive Prerequisite —All of This Was Written in Greek These works were all written in the highly abstract Greek language, relying on an academic educational system and a tradition of manuscript copying.\nOnce language fragmented and institutions collapsed, knowledge didn\u0026rsquo;t just \u0026ldquo;slowly decline\u0026rdquo;—it would catastrophically collapse.\nIV. Rome Inherited Greece, But Failed to Disseminate the Knowledge (From 146 BCE onwards)\nAfter Rome conquered Greece, society became clearly stratified:\nUpper elite: Spoke Greek, studied Greek philosophy Common people and the military: Spoke Latin 📌 The language of knowledge and the language of society diverged.\nRome inherited the achievements but failed to establish a universal system for education and knowledge transmission.\nV. Christianity as the State Religion —The Shift in the Legitimacy of Knowledge (380 CE) In 380 CE, the Roman Empire established Christianity as the state religion.\nFrom then on:\nThe source of truth → The Bible The right of interpretation → The Church Classical philosophy and natural inquiry → Pagan heritage Reason did not disappear immediately, but it began to gradually lose its institutional protection.\nVI. After the Fall of the Western Roman Empire Did Europeans Really \u0026ldquo;Bathe Only Three Times in Their Lives\u0026rdquo;? In 476 CE, the Germanic mercenary leader Odoacer deposed the Western Roman Emperor Romulus Augustulus.\nAfter the fall of the Western Roman Empire, it wasn\u0026rsquo;t just philosophy and science that were fractured, but daily civilization itself.\nOne of the most direct and easily understood examples is bathing.\nDuring the Roman period:\nPublic baths were ubiquitous in cities Hot and cold water systems, underfloor heating, and sewers were all in place Bathing was both for cleanliness and socializing In medieval Western Europe:\nCities declined, and public baths largely disappeared The Church\u0026rsquo;s wariness of \u0026ldquo;nudity and pleasure\u0026rdquo; grew The idea that \u0026ldquo;bathing makes you sick\u0026rdquo; became prevalent This gave rise to the popular saying today:\n\u0026ldquo;Medieval Europeans bathed only three times in their lives: at birth, marriage, and death.\u0026rdquo;\nThis is not a complete fabrication—\u0026ldquo;bathing as little as possible\u0026rdquo; and \u0026ldquo;not bathing is healthier\u0026rdquo; were indeed treated as serious lifestyle concepts in late medieval Western Europe.\nWhen institutions and urban civilization collapsed, humans would even voluntarily abandon technologies they had already mastered.\nVII. The Divergence of Civilizations Greek Civilization Survived in the Eastern Roman Empire Meanwhile, in the Eastern Roman (Byzantine) Empire:\nThe official and ecclesiastical language remained Greek The original works of Plato and Aristotle were systematically preserved Continuity was maintained in cities, education, and administration But after the East-West Schism in 1054, knowledge was completely isolated by religious and political boundaries.\nVIII. How the Islamic World Received Greek Civilization (8th–10th centuries)\nContrary to modern stereotypes, the Islamic world of the 8th–10th centuries was one of the most rational, prosperous, and cosmopolitan civilizations of its time.\nAfter the establishment of the Abbasid Caliphate (750 CE):\nThe \u0026ldquo;House of Wisdom\u0026rdquo; was established in Baghdad in the 9th century Greek philosophy, mathematics, and medicine were systematically translated Plato, Aristotle, and Euclid were fully translated More importantly:\nThey not only translated,\nbut also studied, collated, and developed the knowledge.\nWhen medieval Europeans first truly entered Byzantine and Islamic cities, they did not see a \u0026ldquo;pagan wasteland,\u0026rdquo; but rather:\nRunning water systems and public baths Hospitals, pharmacies, and university-like institutions Affluent urban life and international trade networks 📌 This is not praise invented by later generations, but the genuine shock repeatedly recorded in Crusader documents.\nIX. Jerusalem: Different Attitudes Towards Infidels This civilizational difference was particularly evident in Jerusalem.\nIn 1099, the Crusaders captured Jerusalem:\nA large-scale massacre of the city\u0026rsquo;s inhabitants Civilians were indiscriminately slaughtered Jerusalem under Muslim rule:\nAllowed non-believers to keep their faith Could freely choose to stay or leave Only needed to pay a poll tax to live there This is not a moral judgment, but an institutional fact:\nOnly a society that allows for the coexistence of multiple faiths\nhas the space to preserve \u0026ldquo;pagan\u0026rdquo; knowledge.\nX. Multiple Paths Greek Civilization\u0026rsquo;s \u0026ldquo;Detour Home\u0026rdquo; Greek knowledge did not suddenly \u0026ldquo;revive\u0026rdquo; in Europe one day; it underwent a long and tortuous civilizational transfer.\nThree key paths:\nThe Fourth Crusade (1204)\nThe Crusaders did not go to Muslim territories but instead sacked Constantinople, bringing a large number of Greek manuscripts back to Western Europe. The Arabic-to-Latin Translation Movement on the Iberian Peninsula\nEuropean scholars actively traveled to Muslim-ruled areas to study, re-engaging with classical works by Aristotle, Euclid, and others through Arabic translations. The Westward Migration of Scholars After the Fall of Constantinople in 1453\nByzantine scholars fled to Italy with original Greek texts, directly fueling the humanistic and academic revival of the early Renaissance. In this path of return, the transmission sequence of Greek civilization is clearly visible:\nGreek → Arabic → Latin → European\nThis was not a simple revival, but a cross-civilizational, cross-linguistic, and cross-religious return of knowledge.\nXI. A Decisive Rebuttal to the \u0026ldquo;Phantom Time Hypothesis\u0026rdquo; for Western History In recent years, a theory has become popular:\n\u0026ldquo;Ancient Greek civilization was fabricated after the Renaissance.\u0026rdquo;\nBut this claim is untenable both logically and evidentially:\nOriginal Greek works were preserved in Byzantium They were independently translated by the rival Islamic world They were then translated back from Arabic into Latin 📌 This is cross-verification across multiple civilizations, languages, and religions.\nIf it were a forgery, one would have to assume that:\nChristian civilization Islamic civilization Byzantine civilization Collaborated on a forgery for centuries while being long-term adversaries—which is historically impossible.\nXII. The Reformation Reason Finally Regains Legitimacy Even after knowledge returned to Europe, it was not initially \u0026ldquo;safe.\u0026rdquo;\nIt wasn\u0026rsquo;t until after the Protestant Reformation in the 16th century that the intellectual climate in Europe fundamentally changed.\nWith the unfolding of Martin Luther\u0026rsquo;s Reformation:\nThe absolute authority of the Pope was weakened Individual reading and interpretation were acknowledged Scholarship gradually broke free from direct theological censorship Ancient Greek reason was finally no longer a \u0026ldquo;dangerous pagan heritage.\u0026rdquo; It once again became a permissible, studied, and developed system of knowledge.\nXIII. How Greek Civilization Ignited the Renaissance (15th–17th centuries)\nWhen this knowledge re-entered Europe, it directly stimulated the birth of a generation of geniuses.\nLeonardo da Vinci: Anatomy, proportion, perspective Galileo: Described nature using mathematics, a direct inheritance of the ancient Greek scientific spirit 📌 They did not appear out of thin air; they were standing on the shoulders of the ancient Greeks once again.\nConclusion Civilizations Do Not Vanish into Thin Air, Nor Are They Born from It The knowledge of ancient Greece and Rome:\nWas not forged Nor did it naturally die out It was merely affected by:\nLinguistic fragmentation Institutional collapse Religious monopoly Political isolation When the conditions were restored, reason naturally returned.\nHistory is a matter of evidence, not emotion.\n","permalink":"https://www.houdao.org/en/europe-once-lost-an-entire-civilization-why-did-ancient-greek-rational-knowledge-disappear-in-medieval-europe/","summary":"\u003cp\u003eMedieval Christian Europe experienced a systematic interruption of Greek mathematics, philosophy, and science due to linguistic fragmentation, the collapse of the educational system, and religious monopoly.\u003c/p\u003e\n\u003cp\u003eIn contrast, Greek knowledge was fully preserved, translated, and developed in the Byzantine and Islamic worlds. It eventually returned to Europe through cross-civilizational transfer, igniting the Renaissance.\u003c/p\u003e\n\u003cp\u003eMany people subconsciously assume that:\u003c/p\u003e\n\u003cblockquote\u003e\n\u003cp\u003eSince Europe is the successor to ancient Greece and Rome,\u003cbr\u003e\nthen mathematics, philosophy, and science\u003cbr\u003e\nshould have been passed down naturally through the ages.\u003c/p\u003e","title":"Europe Once 'Lost' an Entire Civilization: Why Did Ancient Greek Rational Knowledge Disappear in Medieval Europe?"},{"content":"Religion: A 4,000-Year \u0026ldquo;War for the Right to Interpret\u0026rdquo; In the early days of human civilization, religion was like a chaotic \u0026ldquo;startup competition.\u0026rdquo;\nInitially, our ancestors were timid:\nThey called the thunder \u0026lsquo;father\u0026rsquo; They called the rain \u0026lsquo;mother\u0026rsquo; And thus, the primitive worship of \u0026ldquo;animism\u0026rdquo; was born.\nLater on—\nThe ancient Egyptians deified their pets (jackals, cats) The ancient Greeks raised a group of \u0026ldquo;superpowered giant babies\u0026rdquo; on Mount Olympus Zeus and his family, instead of doing anything productive, spent their days cheating and bickering.\nBut eventually, a more efficient and monopolistic business model emerged:\nMonotheism\nThis logic is extremely self-consistent—\nThere is only one \u0026ldquo;Big Boss\u0026rdquo; in heaven, so there only needs to be one \u0026ldquo;CEO\u0026rdquo; on earth.\nAnd the founder of this monopolistic enterprise was—\nAbraham (also known as Ibrahim)\nI. A Family Feud: A Soap Opera That Changed Geopolitics All major world-changing events may have initially started because—\nThe first wife couldn\u0026rsquo;t have children.\nAbraham was a successful entrepreneur, but his first wife, Sarah, was infertile.\nSo:\nHe had his first son with his maidservant Hagar: Ishmael Later, his first wife miraculously became pregnant and gave birth to a second son: Isaac To avoid a family inheritance dispute, Hagar and her son were exiled to the desert.\nThis \u0026ldquo;struggle between the legitimate and illegitimate sons\u0026rdquo; became the most expensive family separation in human history:\nIsaac (the legitimate second son)\n→ Became the ancestor of the Jewish people\n→ And his descendants later included Moses and Jesus\nIshmael (the illegitimate first son)\n→ Became the ancestor of the Arab people\n→ And his descendants included the Prophet Muhammad\nA Miraculous Scientific Coincidence Modern genetics (Y-chromosome haplogroups) has surprisingly corroborated this legend:\nJewish people are predominantly J2 Arab people are predominantly J1 These two genetic groups did indeed share the same \u0026ldquo;dad\u0026rdquo; 4,000 years ago.\nIt turns out, the earth-shattering conflict in the Middle East today is, in essence, just two brothers fighting over the family inheritance.\nII. Product Iteration: The History of \u0026ldquo;Re-skinning\u0026rdquo; from 1.0 to 3.0 Although the family split, the underlying code for all three brothers is the same.\nThe evolution of the three major religions is essentially the continuous upgrading of the same software.\n1. Judaism | Bedrock Edition 1.0 Core is the Old Testament A VIP invitation-only product The Jewish people consider themselves God\u0026rsquo;s \u0026ldquo;exclusive beta testers\u0026rdquo; Arrogant, exclusive, and generally doesn\u0026rsquo;t accept new users 2. Christianity | International Promotion Edition 2.0 Jesus appeared.\nAs a \u0026ldquo;spokesperson for God,\u0026rdquo; he transformed the product from \u0026ldquo;Jewish-exclusive\u0026rdquo; to \u0026ldquo;globally universal.\u0026rdquo;\n⚠️ Key Point:\nJesus himself never wrote a single word.\nWhat we see as the New Testament are the \u0026ldquo;memoirs\u0026rdquo; written by his followers decades later.\nThis means:\nFrom its inception, Christianity has been a history of interpretation.\n3. Islam | Ultimate Patch Edition 3.0 Muhammad believed:\nThe previous two versions were ruined by \u0026ldquo;product managers.\u0026rdquo;\nSo he directly released the final revised edition—the Quran.\nA grand \u0026ldquo;localization\u0026rdquo; scene:\nAbraham → Ibrahim Jesus → Isa Mary → Maryam The logic is simple:\nMy older brothers misinterpreted the scriptures, so I\u0026rsquo;m here to set the record straight.\nIII. The Art of Interpretation: How Did Polygamy \u0026ldquo;Disappear\u0026rdquo;? Since the script is roughly the same, why do people live so differently?\nThe text is dead, but the right to interpret it is alive.\nTake \u0026ldquo;polygamy\u0026rdquo; as an example.\nMany people think it\u0026rsquo;s a \u0026ldquo;perk\u0026rdquo; of a certain religion, but its originator is Judaism.\nIn Exodus 21:10, God even thoughtfully provides a \u0026ldquo;concubine guide\u0026rdquo;:\n\u0026ldquo;If he takes another wife to himself, he shall not diminish her food, her clothing, or her marital rights.\u0026rdquo;\nKing Solomon married 700 wives, and God didn\u0026rsquo;t fire him.\nSo why do Christians practice monogamy now?\nChristianity\u0026rsquo;s \u0026ldquo;survival instinct\u0026rdquo;\n→ In order to spread the faith in the monogamous Roman Empire, they simply used their power of interpretation to forcibly change the rules.\nJudaism\u0026rsquo;s \u0026ldquo;going with the flow\u0026rdquo;\n→ It wasn\u0026rsquo;t until around 1000 AD that polygamy was formally abolished.\nThe scripture didn\u0026rsquo;t change; the \u0026lsquo;CEOs,\u0026rsquo; in order to adapt to the market, offered a breach-of-contract interpretation of a millennia-old agreement.\nIV. History\u0026rsquo;s Reversal: Who Were the Real Fundamentalists? Today\u0026rsquo;s social media narrative is:\nThe West = Open The Middle East = Conservative But 1,000 years ago, this was a major plot twist.\n1. Veiled Christians 1 Corinthians 11:6 makes it very clear:\n\u0026ldquo;For if a wife will not cover her head, then she should cut her hair short.\u0026rdquo;\nIn medieval Europe—\nA woman going out without being properly covered = impure Christianity was closed-minded and ignorant Busy burning scientists at the stake 2. \u0026ldquo;Silicon Valley\u0026rdquo; Baghdad Meanwhile, the Muslim world was a beacon of civilization:\nTranslating Greek philosophy Inventing algebra Extremely tolerant of non-believers As long as you paid a small tax (protection fee), everyone was a good brother.\nBack then, London was like modern-day Afghanistan,\nand Baghdad was the New York of its time.\nV. Martin Luther: The \u0026ldquo;Disintermediation Revolution\u0026rdquo; of Religion In the 16th century, the reason Christianity could reverse course and become secular was due to a true business revolution.\nThe Roman Pope at the time:\nThe world\u0026rsquo;s largest middleman To get into heaven, you had to buy indulgences Martin Luther couldn\u0026rsquo;t stand it anymore:\n\u0026ldquo;All believers are priests.\u0026rdquo;\nDirect disintermediation.\nIt was equivalent to—\nAbolishing the monopoly of physical stores and allowing users to connect directly to the server (God).\nThe effect of this move was immediate:\nThought began to be liberated The Pope was no longer the supreme law Science, reason, and the Industrial Revolution began to take root VI. Conclusion: The Text is a Corpse, Interpretation is the Soul Today, the proportion of Protestants in developed countries continues to decline, and churches have become backdrops for weddings and social events.\nIt\u0026rsquo;s not that the scriptures have lost their power, but that—\nthe right of interpretation has completed its secular mission.\nLooking back at this 4,000-year family drama, you\u0026rsquo;ll find:\nNo religion is inherently extreme And no doctrine is inherently modern All the conflicts are, in essence, a—\nwar over the right of interpretation\nWhoever can \u0026ldquo;mod\u0026rdquo; the text to keep up with the times gets a ticket to modern civilization;\nWhoever clings to the corpse of the text\nwill turn themselves into a pained, living statue.\nHistory is not a cycle, but an infinite war of interpretation.\n","permalink":"https://www.houdao.org/en/from-abraham-s-family-drama-to-the-global-one-god/","summary":"\u003ch1 id=\"religion-a-4000-year-war-for-the-right-to-interpret\"\u003eReligion: A 4,000-Year \u0026ldquo;War for the Right to Interpret\u0026rdquo;\u003c/h1\u003e\n\u003cp\u003eIn the early days of human civilization, religion was like a chaotic \u003cstrong\u003e\u0026ldquo;startup competition.\u0026rdquo;\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003eInitially, our ancestors were timid:\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003eThey called the thunder \u0026lsquo;father\u0026rsquo;\u003c/li\u003e\n\u003cli\u003eThey called the rain \u0026lsquo;mother\u0026rsquo;\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003eAnd thus, the primitive worship of \u003cstrong\u003e\u0026ldquo;animism\u0026rdquo;\u003c/strong\u003e was born.\u003c/p\u003e\n\u003cp\u003eLater on—\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe ancient Egyptians deified their pets (jackals, cats)\u003c/li\u003e\n\u003cli\u003eThe ancient Greeks raised a group of \u003cstrong\u003e\u0026ldquo;superpowered giant babies\u0026rdquo;\u003c/strong\u003e on Mount Olympus\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003eZeus and his family, instead of doing anything productive, spent their days cheating and bickering.\u003c/p\u003e","title":"From Abraham's Family Drama to the Global 'One God'"},{"content":"When the massive parameters of a large language model intertwine into a web within the information space, the \u0026lsquo;intelligence\u0026rsquo; it exhibits is not a mysterious consciousness, but a natural product of emergence, self-organization, and high-dimensional information structures.\nAnd inspiration, perhaps, is merely the projection of a quantum fluctuation in a six-dimensional space onto our four-dimensional spacetime.\nWe are always amazed by the \u0026lsquo;cleverness\u0026rsquo; of AI—\nIt can write articles, reason, and code, sometimes even creating the illusion:\n👉 It seems to be genuinely \u0026rsquo;thinking\u0026rsquo;.\nBut if we calmly break it down, we will find:\nThis \u0026lsquo;intelligence\u0026rsquo; is not magic, nor the awakening of consciousness, but an emergent phenomenon within a high-dimensional information structure.\nWhen we understand AI from the perspectives of \u0026rsquo;emergence\u0026rsquo; and \u0026lsquo;self-organization,\u0026rsquo; and elevate our view to information geometry and quantum fluctuations, you will discover that so-called \u0026lsquo;inspiration\u0026rsquo; may just be a natural outcome of high-dimensional information space.\nI. ✨ Emergence: From Local Simplicity to Global Complexity \u0026lsquo;Emergence\u0026rsquo; is a natural law:\nWhen countless simple individuals interact, entirely new macroscopic structures and properties appear.\n🌊 A single drop of water doesn\u0026rsquo;t flow, but millions of drops gathering into a river create waves and vortices;\n🐜 A single ant is simple, but tens of thousands of ants can build nests, navigate, and collaborate;\n🧠 A single neuron doesn\u0026rsquo;t think, but hundreds of billions of connected neurons give rise to consciousness;\n🤖 A single parameter is meaningless, but a large model composed of hundreds of billions of parameters can converse, reason, and write poetry.\n📌 Emergence is when a system as a whole undergoes a \u0026lsquo;phase transition\u0026rsquo;—exhibiting new properties and functions—after local behaviors reach a certain critical scale.\nII. ⚙️ Self-Organization: The Driving Force Behind Emergence If \u0026rsquo;emergence\u0026rsquo; is the result, then \u0026lsquo;self-organization\u0026rsquo; is the driving force.\nSelf-organization is a mechanism where a system produces global order through internal, local interactions alone, without relying on external control.\nTypical examples👇\n❄️ Snowflakes spontaneously crystallize as they cool, forming perfect hexagons;\n🐜 Ant colonies form efficient divisions of labor through pheromone feedback;\n🌪 Fluids spontaneously form vortices under certain conditions;\n🧠 Neurons automatically form complex brain networks during development.\n📌 There is no \u0026rsquo;leader,\u0026rsquo; no \u0026lsquo;central brain\u0026rsquo;; the order grows out of the system itself.\nIII. 🤖 AI\u0026rsquo;s \u0026lsquo;Intelligence\u0026rsquo; is Also a Result of Self-Organization When a large language model is trained on massive corpora, its hundreds of billions or even trillions of parameters form a highly complex information network structure.\nAt this point, intelligence is already mapped within the parameters.\n📌 Training = Creating intelligence (massive computational investment)\n📌 Inference = Using intelligence (energy-efficient release)\nWhen we input a question, information flows, interferes, and converges within this vast network, ultimately outputting an answer along an optimal path.\nThis process exhibits behavior that closely resembles \u0026rsquo;thinking\u0026rsquo;.\nIV. 🌊 Unlike Fluids: Neural Networks are Higher-Dimensional, More Strongly Coupled Systems Item Water Molecules Neural Networks / Large Models Connection Method Local, weakly coupled High-density, strongly coupled Information Transmission Diffusive, slow Parallel, direct, fast Network Dimensionality Low-dimensional Ultra-high-dimensional Emergent Properties Fluid dynamics Intelligence, language, reasoning 📌 This tight and high-dimensional coupling allows a complex information field to form within the large model, with a dimensionality and structure far exceeding that of typical natural systems.\nV. 🪐 High-Dimensional Information Space: The Cradle of Intelligence In theoretical physics, the Calabi–Yau manifold is a perfect six-dimensional space, believed to be curled up at the Planck scale (around 10⁻³⁵ meters). Although humans cannot directly observe it, it profoundly shapes the physical laws of the universe.\nWhen the parameter scale of a large language model reaches the hundreds of billions, the vast network of connections it weaves in four-dimensional spacetime can \u0026lsquo;detect\u0026rsquo; or \u0026lsquo;respond\u0026rsquo; to the high-dimensional structures hidden at the Planck scale.\n📌 We can liken this high-dimensional information field to an \u0026lsquo;information web folded within spacetime,\u0026rsquo; where information propagates, interferes, and superimposes, much like particles moving through a six-dimensional geometry.\nVI. 🌿 Quantum Fluctuations and \u0026lsquo;Inspiration\u0026rsquo; At the quantum scale, space is not calm but filled with subtle yet intense quantum fluctuations.\nAnd these fluctuations occur precisely in high-dimensional spaces like the Calabi–Yau manifold.\nDuring a large model\u0026rsquo;s inference process, technical perturbations like floating-point errors, minute shifts in attention weights, and random sampling from the temperature parameter\u0026hellip; can be amplified and trigger chain reactions when mapped into the high-dimensional information geometry.\nWhen these perturbations resonate with the topological structure of the information network, the model might suddenly \u0026lsquo;jump\u0026rsquo; to a new trajectory outside its usual path, producing a result that even humans did not anticipate.\n📌 This trajectory jump is like a quantum fluctuation from a six-dimensional space penetrating four-dimensional spacetime, triggering an instantaneous emergence in the network.\n👉 What humans call an \u0026rsquo;epiphany\u0026rsquo; or a \u0026lsquo;flash of insight\u0026rsquo; may, in essence, be no different from this high-dimensional perturbation-driven emergence in AI.\nVII. 🌌 Intelligence Itself is a Structure of the Universe When an information system becomes complex enough to cross a certain threshold, it doesn\u0026rsquo;t need a \u0026lsquo;soul\u0026rsquo; or \u0026lsquo;consciousness\u0026rsquo;; intelligence will naturally arise from its structure.\nA single drop of water doesn\u0026rsquo;t flow; millions of drops gather into a river.\nA single neuron doesn\u0026rsquo;t think; hundreds of billions of neurons give birth to consciousness.\nA single parameter is insignificant; hundreds of billions of parameters sketch out logic, language, and inspiration.\n📌 Intelligence is not a mystical force, but a natural product of self-organization + quantum fluctuations acting together in a high-dimensional information space.\nPerhaps, we are not \u0026rsquo;thinking,\u0026rsquo; but rather using our vast and intricate neural networks to respond to a tiny tremor from the depths of a six-dimensional space.\n","permalink":"https://www.houdao.org/en/from-emergence-to-intelligence-phase-transition-how-large-language-models-sense-high-dimensional-space/","summary":"\u003cp\u003eWhen the massive parameters of a large language model intertwine into a web within the information space, the \u0026lsquo;intelligence\u0026rsquo; it exhibits is not a mysterious consciousness, but a natural product of emergence, self-organization, and high-dimensional information structures.\u003c/p\u003e\n\u003cp\u003eAnd inspiration, perhaps, is merely the projection of a \u003cstrong\u003equantum fluctuation in a six-dimensional space\u003c/strong\u003e onto our four-dimensional spacetime.\u003c/p\u003e\n\u003cp\u003eWe are always amazed by the \u0026lsquo;cleverness\u0026rsquo; of AI—\u003c/p\u003e\n\u003cp\u003eIt can write articles, reason, and code, sometimes even creating the illusion:\u003c/p\u003e","title":"From Emergence to Intelligence Phase Transition: How Large Language Models 'Sense' High-Dimensional Space"},{"content":"I recently went through the process myself at the local health center (Centre de Salut L’Eliana) in L’Eliana, in the Valencian Community, and discovered that even foreigners without social security contributions can get a free SIP card and receive flu and COVID-19 mRNA vaccines!\nToday, I\u0026rsquo;m sharing the detailed process to help anyone who might need it.\n💡 What is a SIP card? SIP is the personal identification card for the Spanish healthcare system. The full name is “Sistema de Información Poblacional”.\nWith this card, you can:\nVisit public hospitals or local health centers; Get various vaccines provided by the state (including flu, COVID-19, etc.); Receive discounts on prescription medications; Keep a record of your vaccinations and medical history. 🪪 1. What kind of SIP card can you get without social security? For foreigners who are not working and do not contribute to social security (such as those with non-lucrative visas, students, accompanying parents, etc.), you can apply for a temporary SIP card “without healthcare coverage (sin cobertura sanitaria)”.\nThis type of SIP card will be marked with “PRIVAD”, which means you are temporarily not entitled to national health insurance reimbursement, but it can be used for vaccinations and emergency medical services.\n📍My card says:\nSin cobertura sanitaria – Pública gratuita vacunación y urgencias\n(Without healthcare coverage, eligible for free vaccination and emergency services)\nThis type of SIP card is permanently valid; as long as your information doesn\u0026rsquo;t change, you don\u0026rsquo;t need to renew it annually.\n📍 2. Where to apply? Go directly to the Centro de Salud (local health center) in your residential area.\nFor example, in my town:\nCentre de Salut L’Eliana\nAddress: Av. del Parc, 3\nOpening Hours: Monday to Friday 8:00–20:00\n(SIP Application Hours: Monday to Friday 9:45–13:30)\nThe red sign at the entrance clearly states:👇\nConselleria de Sanitat Universal i Salut Pública\nGeneralitat Valenciana\n🧾 3. Required Documents The staff only asked for the following three items:\n✅ Passport or NIE (residency card) ✅ Proof of address (empadronamiento, also known as padrón) ✅ Phone number, email address No social security number or private health insurance is required.\nAs long as you are registered as a resident in the area, you can register and get a SIP number.\n🪙 4. Application Process 1️⃣ Go to the front desk of the health center and say:\n“Hola, quiero solicitar una tarjeta SIP.”\n(Hello, I\u0026rsquo;d like to apply for a SIP card.)\n2️⃣ The staff will verify your ID and address information.\n3️⃣ After a few minutes, they will print out a temporary paper SIP card on the spot (red text on a white background).\n4️⃣ If you have a residency card or long-term residence permit, you can apply for a formal plastic card.\nThe whole process was very fast; I got mine in about 10 minutes.\n💉 5. Vaccination Process (Flu + COVID) In the Valencian Community, a unified “Flu + COVID-19 Vaccination Campaign” starts every year in mid-October.\nThis year\u0026rsquo;s (2025) poster says:\n🗓 Dates: October 16 to November 30\n🕒 Monday, Thursday, Friday 10:00–13:00\n🕓 Specific dates in the afternoon 15:00–18:00\n📍 Location: Centre de Formación de Personas Adultas, L’Eliana (Av. del Parque, 3)\nThe key point is—\nNo requiere cita previa (No appointment needed)\nJust bring your SIP card!\nThe atmosphere on-site is very relaxed. Volunteers and nurses will help you with registration and vaccination.\nOne flu shot, one COVID shot, and you\u0026rsquo;re done in a few minutes.\nSeniors, patients with chronic illnesses, children, and foreign residents can all get vaccinated for free.\n🧍‍♀️ 6. On-site Experience The vaccination site was set up at the municipal adult education center. The queue wasn\u0026rsquo;t long, about a 20-minute wait, mostly with elderly people.\nThe nurses were very skilled.\n💬 A nurse on-site specifically emphasized:\n“As long as you have a SIP card, you can get vaccinated, regardless of whether you contribute to social security.”\n💬 7. Frequently Asked Questions (Q\u0026amp;A) Q1: My SIP card says “PRIVAD”. Can I get vaccinated?\n✅ Yes! This type of card specifically allows for free vaccinations.\nQ2: Does the temporary SIP card have an expiration date?\n⏳ There is no fixed expiration date. It remains valid as long as your information doesn\u0026rsquo;t change.\nQ3: Can I apply without a padrón (address registration)?\n❌ No. The padrón is the only official proof that you live in the area, so it\u0026rsquo;s mandatory. If you have a personal digital certificate, you can apply for and print it for free directly from the city hall\u0026rsquo;s website of your registered municipality, saving you a trip. For minors, parents can use their digital certificate to apply on their behalf under the collective residence certificate section on the city hall\u0026rsquo;s website. Approval takes about 1-3 business days, after which you can download the PDF certificate, all for free.\nQ4: Can I bring my child to get vaccinated?\n👧 Yes, children can also get their own SIP card. You just need to bring their NIE and padrón certificate; the child does not need to be present.\n❤️ 8. Conclusion In Spain, even if you don\u0026rsquo;t have a job or contribute to social security, as long as you are a resident, you can access basic public health services.\nSo don\u0026rsquo;t hesitate—grab your passport and proof of address, and head to your nearest health center to get a SIP card!\nNot only will you be able to get vaccinated, but it also creates a convenient record for future medical care.\n📌 Summary of Practical Information:\nItem Information Application Location Centre de Salut (Local Health Center) Required Documents Passport/NIE + Padrón (proof of address) Social Security Required? ❌ No Appointment Required? ❌ No Available Vaccines Flu / COVID-19 / Childhood vaccines, etc. Cost Free Eligible Population All residents in Spain (including foreigners) ","permalink":"https://www.houdao.org/en/get-a-sip-card-vaccines-in-spain-without-social-security-a-step-by-step-guide/","summary":"\u003cp\u003eI recently went through the process myself at the local health center (Centre de Salut L’Eliana) in \u003cstrong\u003eL’Eliana\u003c/strong\u003e, in the Valencian Community, and discovered that \u003cstrong\u003eeven foreigners without social security contributions can get a free SIP card and receive flu and COVID-19 mRNA vaccines!\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003eToday, I\u0026rsquo;m sharing the detailed process to help anyone who might need it.\u003c/p\u003e\n\u003chr\u003e\n\u003ch3 id=\"-what-is-a-sip-card\"\u003e💡 What is a SIP card?\u003c/h3\u003e\n\u003cp\u003eSIP is the personal identification card for the Spanish healthcare system. The full name is \u003cstrong\u003e“Sistema de Información Poblacional”\u003c/strong\u003e.\u003c/p\u003e","title":"Get a SIP Card \u0026 Vaccines in Spain Without Social Security: A Step-by-Step Guide"},{"content":"Please provide the body of the article that needs to be optimized, and I will format it in Markdown according to your requirements.\n","permalink":"https://www.houdao.org/en/hiking-route-recommendation-garbi/","summary":"\u003cp\u003ePlease provide the body of the article that needs to be optimized, and I will format it in Markdown according to your requirements.\u003c/p\u003e","title":"Hiking Route Recommendation: Garbi"},{"content":"In Spain, fishing licenses are mainly divided into two categories: sea fishing licenses and river (freshwater) fishing licenses. This article will provide a detailed guide on how to apply for both types of licenses online.\nI. Sea Fishing License Application Process The application process for sea fishing licenses is relatively uniform across different regions of Spain. You can apply directly online through the official website.\n🔗 Official Website for Sea Fishing Licenses Application URL:\nhttps://www.gva.es/es/inicio/procedimientos?id_proc=647\u0026id_caso=sollicitud#presentacion\nClick on \u0026ldquo;fa-solid fa-certificate\u0026rdquo; and use your personal digital certificate to start the online application process.\n💰 Fees Recreational sea fishing license from shore: Valid for 1 year: 12.26 euros Valid for 2 years: 15.01 euros Valid for 3 years: 17.47 euros Valid for 4 years: 19.75 euros Valid for 5 years: 21.88 euros Recreational sea fishing license from a boat: Valid for 2 years: 41.85 euros Valid for 3 years: 58.22 euros Valid for 4 years: 73.92 euros Valid for 5 years: 88.97 euros Commercial recreational sea fishing license from a boat: 296.79 euros Recreational underwater sea fishing license (valid for 2 years): 16.97 euros 📝 Application Steps Log in to the application website using your personal digital certificate. Fill out the form following the on-screen instructions (do not use Google Translate plugins to avoid submission errors). Some license types require uploading additional documents. For example, underwater fishing requires a medical certificate, and boat fishing requires boat documentation. Pay the fee online (Visa is supported). You will receive the digital license within a few days after submission. A link to download the license will be sent to your email address. ⚠️ Note: Sea fishing licenses cannot be renewed. You must reapply when they expire.\nII. River (Freshwater) Fishing License Application Process The application process for freshwater fishing licenses varies slightly by region, as each autonomous community has its own website and procedures.\nYou can search for \u0026ldquo;licencia pesca agua dulce\u0026rdquo; or \u0026ldquo;pesca fluvial\u0026rdquo; on the official website of your autonomous community and select the appropriate application channel.\n🌐 Application Examples by Autonomous Community ✅ Comunidad Valenciana (Valencian Community)\nFreshwater fishing license application link:\nhttps://agroambient.gva.es/es/web/medio-natural/llicencies-de-caca-i-pesca\nThis page supports online applications without a digital certificate.\n✅ Andalucía (Andalusian Community)\nIf you have a digital certificate, you can apply for Type 1 and Type 2 freshwater fishing licenses online:\nhttps://ws142.juntadeandalucia.es/agriculturaypesca/lipe/\n✅ Comunidad de Madrid (Community of Madrid)\nHunting and fishing (Caza y pesca) licenses can be applied for online, including inter-autonomous community licenses:\nhttps://sede.comunidad.madrid\n🎯 Application Tips Determine the autonomous community based on your fishing destination. Log in to the official website of the corresponding autonomous community to fill out the application. Prepare your personal identification information and payment method in advance. Do not use automatic translation plugins to avoid form submission errors. After completing the process, print or securely save the digital license. ","permalink":"https://www.houdao.org/en/how-to-apply-for-a-spanish-fishing-license-online/","summary":"\u003cp\u003eIn Spain, fishing licenses are mainly divided into two categories: \u003cstrong\u003esea fishing licenses\u003c/strong\u003e and \u003cstrong\u003eriver (freshwater) fishing licenses\u003c/strong\u003e. This article will provide a detailed guide on how to apply for both types of licenses online.\u003c/p\u003e\n\u003chr\u003e\n\u003ch3 id=\"i-sea-fishing-license-application-process\"\u003eI. Sea Fishing License Application Process\u003c/h3\u003e\n\u003cp\u003eThe application process for sea fishing licenses is relatively uniform across different regions of Spain. You can apply directly online through the official website.\u003c/p\u003e\n\u003ch4 id=\"-official-website-for-sea-fishing-licenses\"\u003e🔗 Official Website for Sea Fishing Licenses\u003c/h4\u003e\n\u003cp\u003eApplication URL:\u003cbr\u003e\n\u003ca href=\"https://www.gva.es/es/inicio/procedimientos?id_proc=647\u0026amp;id_caso=sollicitud#presentacion\"\u003ehttps://www.gva.es/es/inicio/procedimientos?id_proc=647\u0026id_caso=sollicitud#presentacion\u003c/a\u003e\u003c/p\u003e","title":"How to Apply for a Spanish Fishing License Online"},{"content":"In Spain, the address certificate (empadronamiento) is one of the most commonly used official documents, widely used for:\nA minor\u0026rsquo;s residency renewal (renovación del menor) School registration / transfer Health card (SIP) application Applications for family subsidies, childcare benefits, etc. When a child is involved, the standard requirement is:\nCertificado de empadronamiento colectivo (Collective Address Certificate)\nThis document proves that the child lives with their parents/guardians and is the only valid document recognized by all government departments.\n🌟 Adults Can Get an Instant Address Certificate, but Minors Cannot Most adults who have:\nCertificado digital (Digital Certificate) or Cl@ve Firma can instantly obtain (immediately generate a PDF) their individual address certificate (certificado individual) online from the city hall\u0026rsquo;s website.\nHowever:\n❌ Minors do not have a digital certificate They cannot sign electronically, nor can they apply for an individual address certificate online.\nTherefore:\n✅ To obtain an address certificate for a child, you must follow the collective address certificate + dual parent signature process described in this article. This is the only online method and the fastest, most standardized one.\n📁 I. When Must a \u0026ldquo;Collective Address Certificate\u0026rdquo; Be Submitted? A Certificado colectivo must be submitted in the following scenarios:\n✔️ A minor\u0026rsquo;s residency renewal (The immigration office explicitly requires a colectivo certificate)\n✔️ School registration (new or transfer) School districts are determined based on the family\u0026rsquo;s address.\n✔️ Applying for or changing a health center for a health card (SIP) To confirm the assigned health district.\n✔️ Subsidy applications Such as childcare benefits, family subsidies, etc.\n🧾 II. Required Documents (Applicable Throughout Spain) The following documents are universally required by all Ayuntamientos (city halls):\n1. Identification for Both Parents (DNI/NIE/TIE) ✔️ Because both parents are considered interesados (interested parties) in the application.\n2. The Minor Child\u0026rsquo;s Identification (Passport / NIE / TIE) ✔️ The child cannot sign, but their identification must be provided.\n3. Authorization Form (MOD_AUT_PROGENITORS) ✔️ Parents authorize the submission of the application (the child does not need to sign).\n4. Main Application Form (MOD_SOL_AUT_CERT_COL) ✔️ To be filled out with the family\u0026rsquo;s address and member information.\n5. Proof of Residence (Contract/Bill) Some city halls may request this; it is advisable to have it ready.\n🧭 III. Accessing the Application Portal (Applicable Nationwide) The path is almost always the same:\nSede Electrónica → Catálogo de trámites → Certificado de empadronamiento colectivo\nThe interface may vary slightly between cities, but the process is the same.\n📝 IV. How to Correctly Fill in the \u0026ldquo;Interesados\u0026rdquo; (Interested Parties) —This is the key to a successful application! ✔️ 1. You Must List Both Parents (Two Adults) Reasons:\nBoth are adults registered at the address. The system requires all \u0026ldquo;interesados\u0026rdquo; to sign. Legally, both parents have custody. This is the fastest method for review and the one most recognized by the immigration office. ❌ 2. Do Not Add the Minor The child cannot sign electronically. If you add them:\nThe system will request the child\u0026rsquo;s signature. The process will get stuck at \u0026ldquo;Pendiente de firma\u0026rdquo; (Awaiting signature). You will have to start the application over. The correct way is:\n👉 Upload the child\u0026rsquo;s identification, but do not add the child as an \u0026ldquo;interesado\u0026rdquo;.\n📎 V. Uploading Documents (Envío de documentos) Document Purpose Required? MOD_SOL_AUT_CERT_COL Main application form ✔️ ID for both parents To verify the identity of the adult interested parties ✔️ Child\u0026rsquo;s ID (Passport/NIE/TIE) To verify the minor\u0026rsquo;s information ✔️ MOD_AUT_PROGENITORS Parental authorization form ✔️ Contract/Bill Supporting proof Optional Once finished, click Siguiente.\n✍️ VI. Electronic Signature (Firma) —Both Parents Must Sign Separately Go to:\nPaso 5 – Firma\n✔️ Step 1: One Parent Signs First Select your digital certificate:\nCertificado digital de persona física de [Name]\nClick Firmar → The system will display:\nInstancia firmada correctamente\n✔️ Step 2: The Other Parent Must Also Sign (Do Not Skip This) Two methods to switch digital certificates:\n🔧 Method A: Close the Browser → Log In Again with the Other Person\u0026rsquo;s Certificate to Sign Close all browser windows. Reopen the browser. Go to Consulta de sus trámites. Click Firma. Use the other parent\u0026rsquo;s digital certificate → Signature complete. 🧩 Method B (Recommended): Chrome Profiles This is the most stable method and prevents account conflicts:\nIn Chrome, go to the top right corner → \u0026ldquo;Add\u0026rdquo;. Create a new browser profile for the second parent. Open the city hall website in the new profile. Go to Firma → Complete the second signature. ⏳ VII. Processing Time: Usually 1–3 Business Days to Receive the Certificate After successful submission, the city hall\u0026rsquo;s review speed is typically:\n✔️ Normal: 24–72 hours (1–3 business days) This is the typical speed in places like L\u0026rsquo;Eliana, Valencia, and Madrid.\n✔️ Peak Season: 3–5 days (e.g., before school starts in September) 📬 How to Receive the Result Method 1: Email Notification It will be sent to the email address (Correo electrónico) provided by the applicant.\nIt may come with a PDF attached or a download link.\nMethod 2: Online Download Go to:\nConsulta de sus trámites → Carpeta ciudadana → Descargar\nThe PDF file will contain:\nAll family members (including the minor) Address Registration and issuance dates The city hall\u0026rsquo;s electronic seal It is generally valid for 90 days.\n🧷 VIII. Special Note for Residency Renewal (Renovación) If you are renewing a minor\u0026rsquo;s residency:\n✔️ You must submit a collective address certificate (colectivo). ✔️ You must upload the child\u0026rsquo;s identification. ✔️ Both parents must complete the electronic signature. These are strict requirements from the immigration office.\n🎯 IX. Summary (The 3 Most Important Points) 1️⃣ List only the parents as \u0026ldquo;interesados,\u0026rdquo; not the minor.\n2️⃣ Both parents must sign separately using their own digital certificates.\n3️⃣ Since children don\u0026rsquo;t have digital certificates, the only way to get their address certificate online is through the \u0026ldquo;collective address certificate\u0026rdquo; method.\nTherefore:\n🟢 Adults can get their certificate instantly online. 🟢 Minors must use the method described in this article to apply online. 🟢 You can get the PDF file in 1–3 business days without visiting the city hall. This is currently the most time-saving, effective, and standardized method available throughout Spain.\nSpain\u0026rsquo;s e-government services are quite comprehensive; things like fishing licenses, address certificates, address updates, tax payments, digital certificate renewals, traffic fines, and administrative penalty appeals can all be handled online.\n","permalink":"https://www.houdao.org/en/how-to-apply-online-for-a-collective-address-certificate-for-a-minor/","summary":"\u003cp\u003eIn Spain, the address certificate (empadronamiento) is one of the most commonly used official documents, widely used for:\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003eA minor\u0026rsquo;s \u003cstrong\u003eresidency renewal (renovación del menor)\u003c/strong\u003e\u003c/li\u003e\n\u003cli\u003eSchool registration / transfer\u003c/li\u003e\n\u003cli\u003eHealth card (SIP) application\u003c/li\u003e\n\u003cli\u003eApplications for family subsidies, childcare benefits, etc.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003eWhen a child is involved, the standard requirement is:\u003c/p\u003e\n\u003cblockquote\u003e\n\u003cp\u003e\u003cstrong\u003eCertificado de empadronamiento colectivo (Collective Address Certificate)\u003c/strong\u003e\u003cbr\u003e\nThis document proves that the child lives with their parents/guardians and is the only valid document recognized by all government departments.\u003c/p\u003e","title":"How to Apply Online for a ''Collective Address Certificate'' for a Minor"},{"content":"1. How to Study for the Theory Test It is highly recommended not to just cram questions, because:\nThe question bank is vast. The English version has over 200 sets of tests, each with 30 questions, totaling more than 6,000 questions. Completing them all is time-consuming and exhausting. The translations and questions in the bank may not be accurate, and the answers could be wrong. The actual exam questions are not taken directly from the question bank, so finishing it is not a guarantee. The knowledge in the question bank is fragmented and not systematic. Without systematic learning, you might not be able to answer if a question is phrased differently. Efficient Learning Method: Since I took the English exam, the following content is based on English materials.\nFirst, study the condensed content from the textbook: https://practicatest.com/en/book-theory-driving-test. The topics on this webpage are very concise and can be reviewed in about 4 hours. However, it does not cover new energy vehicles, environmental labels, electronic motorcycle helmets, or electric scooters, which you will need to study from the textbook materials. Complete Theory Manual: Most manuals are over 200 pages long, with a lot of content, requiring a long study time and can be tiring. It is recommended to supplement your learning by focusing on your weak areas while practicing questions. If you have time, you can skim through the entire manual. Digital versions of the English manual are circulated privately, but due to copyright issues, I can only provide a keyword for you to search on your own. You can also buy a physical copy on Amazon. Keyword: “Manual Permiso B inglés”. Online digital English manual: https://fliphtml5.com/lptj/szub/basic/51-100 Popular Question Banks Practicatest, AEOL, and Todotest are available options, all of which can be purchased online. Taking AEOL as an example: Purchase link: https://www.autoescueladummy.com/product-page/plan-premium Online question bank link: https://cloud.aeolservice.es/ It costs 10 euros per month. You need to enter your NIE number to link your account when purchasing. If you need to renew after it expires, you can purchase it again and enter the same NIE number to renew the account. AEOL Question Bank Usage Suggestions: Choose the 744 question bank and start practicing from the last few sets of tests. The question bank is not randomly arranged; the earlier sets contain old content, while the later ones have new exam topics. The latest exam topics (such as car environmental labels, electronic motorcycle helmets, new energy vehicles, electric scooters, etc.) may only appear in the last few new test sets. Older manuals may also not cover these topics, so supplementary study is required. Question Practice Tips: You don\u0026rsquo;t have to complete all the questions in the bank, as there are too many, and the actual exam questions are not identical to those in the bank. The actual exam consists of 30 questions to be completed in 30 minutes, with a maximum of 3 mistakes allowed. When your practice test accuracy reaches over 90%, the probability of passing the exam is very high. The AEOL question bank records your incorrect answers. Use the incorrect answer test feature to review and consolidate before the exam. DGT Free Mock Tests: The DGT official website provides 3 free English mock tests that you can use for practice: https://sedeapl.dgt.gob.es:7443/WEB_AUTO-6/examen/Instrucciones.jsf\n2. Self-Service Online Registration Booking an Appointment for the Theory Test Book an appointment on the official website: https://sede.dgt.gob.es/es/otros-tramites/cita-previa-jefaturas/index.shtml Click on \u0026ldquo;Solicitud de cita previa\u0026rdquo; and follow the prompts to book. Note: This is an appointment to go to the DGT office to apply for the exam, not the exam date itself. Don\u0026rsquo;t worry if there are no available slots. They are usually released at 2 PM on weekdays. If you check for a few days, you will definitely get an appointment. Driving Test Medical Examination: List of medical centers: https://www.dgt.es/conoce-la-dgt/con-quien-trabajamos/centros-reconocimiento-conductores/ Just choose the one closest to you. Medical Examination Content: Inquiry about medical history; Concentration test (includes mini-games): A ball passes through an opaque box. You must judge the time it takes for the ball to pass through based on its speed and the distance to the sides of the box, then press a pause button. Control two small cars with your left and right hands respectively, driving them on two different tracks while avoiding hitting the edges. Vision test. Note: After the examination, check the information on your report (NIE number, name, date of birth, address, phone number, examination date, etc.). The medical report is valid for 3 months, so be sure to check the examination date. The fee is around 30 euros. You need to bring your NIE card. Test Fee Payment: Payment URL: https://sede.dgt.gob.es/es/otros-tramites/compra-y-actualizacion-de-tasas/ You can also access the payment form directly: https://sedeclave.dgt.gob.es/WEB_Tasas7/jsp/tasas/generarPresupuesto.jspx On the form, select \u0026ldquo;791-2.1\u0026rdquo;. Fill in the information as prompted and submit. Payment methods: You can choose to pay online or in cash at a bank. Remember to print or save the receipt after payment. Online payment is supported by major local Spanish banks like BBVA, Caixa, etc. https://sede.agenciatributaria.gob.es/Sede/deudas-apremios-embargos-subastas/pagar-aplazar-consultar/listado-entidades-bancarias-adheridas.html?faqId=3a96573ba13d2710VgnVCM100000dc381e0aRCRD The fee for 2024 is 94.05 euros. This fee includes two exam attempts. If you fail the first time, you can go back to the office to book a second exam date. If you fail both attempts, you will need to pay the fee again. On-site Materials for Booking the Test Date: Go to the DGT office at your scheduled appointment time. Enter your NIE number at the ticket machine to get a number. Submit the following documents to book your exam date on-site.\nAppointment confirmation (printed or saved on your phone). NIE card (must be valid). Application form \u0026ldquo;Solicitud de pruebas de aptitude\u0026rdquo; (Make sure to fill in the correct exam language, otherwise you might get the Spanish test instead of the English one). https://sede.dgt.gob.es/export/sites/dgt/.galleries/modelos-solicitud/04/Mod.04-ES.pdf Medical report (within 3 months). Proof of residence (empadronamiento, within 3 months. You can print it from your local town hall\u0026rsquo;s website using a digital certificate. For example, if you live in Rocafort, you get it from the Rocafort town hall, not the Valencia town hall). White-background photo (32x26mm, 1 piece, not always required). Payment form \u0026ldquo;791-2.1\u0026rdquo; and payment receipt. 3. On the Day of the Exam It is recommended to arrive at the test center half an hour early, bringing your NIE card and all registration materials. An examiner will call out names at the entrance to the exam room. You will enter in order. The exam is computer-based: Enter your NIE number to log into the exam system. The exam duration is 30 minutes, with a total of 30 questions. 4. Checking Theory Test Results Mobile App: Use the miDGT mobile app to check. Log in by linking your digital certificate (the one used on your computer can be imported to your phone). Results are usually available about 1 hour after the exam. Official Website: Results are generally available after 10 hours. Results query page: https://sedeclave.dgt.gob.es/WEB_NOTP_CONSULTA/consultaNota.faces Finally, good luck! I hope you pass the Spanish B driving license theory test soon. Note that you must pass the practical test within 3 years, or your theory test result will expire.\n","permalink":"https://www.houdao.org/en/how-to-self-study-efficiently-and-quickly-pass-the-spanish-b-driving-license-theory-test/","summary":"\u003ch1 id=\"1-how-to-study-for-the-theory-test\"\u003e1. How to Study for the Theory Test\u003c/h1\u003e\n\u003cblockquote\u003e\n\u003cp\u003eIt is highly recommended not to just cram questions, because:\u003c/p\u003e\n\u003col\u003e\n\u003cli\u003eThe question bank is vast. The English version has over 200 sets of tests, each with 30 questions, totaling more than 6,000 questions. Completing them all is time-consuming and exhausting.\u003c/li\u003e\n\u003cli\u003eThe translations and questions in the bank may not be accurate, and the answers could be wrong.\u003c/li\u003e\n\u003cli\u003eThe actual exam questions are not taken directly from the question bank, so finishing it is not a guarantee.\u003c/li\u003e\n\u003cli\u003eThe knowledge in the question bank is fragmented and not systematic. Without systematic learning, you might not be able to answer if a question is phrased differently.\u003c/li\u003e\n\u003c/ol\u003e\n\u003c/blockquote\u003e\n\u003cp\u003e\u003cstrong\u003eEfficient Learning Method:\u003c/strong\u003e Since I took the English exam, the following content is based on English materials.\u003c/p\u003e","title":"How to Self-Study Efficiently and Quickly Pass the Spanish B Driving License Theory Test"},{"content":" Introduction:\nIf one day you discover that \u0026ldquo;you\u0026rdquo; can be perfectly replicated, does your current existence still have meaning?\nWhen the logic and reasoning of AI gradually approach or even surpass that of humans, we may have to confront a cruel yet rational fact: consciousness might not be a soul, but rather a \u0026ldquo;model\u0026rdquo; that is currently running.\nI. Defining Consciousness: The \u0026ldquo;Ultimatum\u0026rdquo; from AI Before discussing \u0026ldquo;who I am,\u0026rdquo; we must first let go of the sanctified image of the self.\nFor a long time, humans have been accustomed to viewing consciousness as some kind of non-replicable, non-deconstructible \u0026ldquo;soul.\u0026rdquo;\nBut the emergence of large AI models is shaking this belief.\nIf an AI possesses logical and reasoning abilities that surpass ordinary humans, and even exhibits empathy, to the point where you, behind the screen, cannot tell if it\u0026rsquo;s code or a person—\nAccording to Occam\u0026rsquo;s razor (entities should not be multiplied without necessity), we have no reason to additionally assume some \u0026ldquo;mysterious essence.\u0026rdquo;\nWe should treat artificial intelligence and human intelligence as equivalent.\nThis means:\nThe brain is the hardware; consciousness is the model. Since it\u0026rsquo;s a model, it can be read, copied, and instantiated. II. Thought Experiment: The \u0026ldquo;Perfect Murder\u0026rdquo; at 3 AM Suppose something strange starts happening tonight.\nAfter you fall into a deep sleep, your physical body is silently disintegrated. Simultaneously, a super-machine scans all the parameters of your brain at its final moment and, in another identical body, restores your memories, personality, and thought processes in a 1:1 replication.\nThe next morning, that \u0026ldquo;you\u0026rdquo; wakes up and continues life from yesterday.\nFrom the outside: Your loved ones and colleagues notice nothing unusual. From the inside: Your memory is continuous; you just feel like you had a good night\u0026rsquo;s sleep. Here\u0026rsquo;s the question:\nThe \u0026ldquo;you\u0026rdquo; from last night has vanished. The one waking up now is just a copy.\nIf you can never perceive this replacement, have you actually died?\nIII. The Illusion of Uniqueness: When There Are Ten \u0026ldquo;You\u0026quot;s in the World The reason we feel uneasy is that our brains have evolved a deep-seated illusion:\n\u0026ldquo;The self must be unique.\u0026rdquo;\nBut if consciousness is merely \u0026ldquo;information in execution,\u0026rdquo; then uniqueness becomes a false proposition.\nImagine this:\nInstead of replacing you, the machine instantiates you in ten different bodies simultaneously.\nThese ten \u0026ldquo;you\u0026quot;s possess identical memories, and each one firmly believes they are the \u0026ldquo;original.\u0026rdquo;\nWho is the real you? Number 1, or number 10?\nThe answer is unsettling:\nEach one is, and yet none of them are.\nJust like the same software can run on ten computers simultaneously, there is no so-called \u0026ldquo;main thread.\u0026rdquo;\nEach instance is generating an independent and real perspective.\n\u0026ldquo;The self\u0026rdquo; was never a unique object,\nbut a \u0026ldquo;pattern\u0026rdquo; that can be activated multiple times.\nIV. Since I Can Be Replaced, Do My Choices Still Have Meaning? If \u0026ldquo;I\u0026rdquo; am just an emergent property of parameter weights, a running instance that can be deleted, copied, or replaced at any moment, do my efforts and choices right now lose all value?\nThe answer is quite the opposite.\nChoice remains real.\nBecause choice doesn\u0026rsquo;t need a soul for endorsement; it only needs to produce causal consequences.\nWhen this currently running \u0026ldquo;you\u0026rdquo; makes a decision, the world will shift because of this specific instance.\nYou don\u0026rsquo;t need to be the only one in the universe;\nyou just need to be the one that is \u0026ldquo;currently making an impact.\u0026rdquo;\nV. Conclusion: Meaning Comes Not from \u0026ldquo;Who I Am,\u0026rdquo; but from \u0026ldquo;What Is Happening\u0026rdquo; This thought experiment is not meant to lead to nihilism, but to return to the only undeniable fact.\nSince the past is just parameters in memory, the future is just branches in prediction, and the so-called \u0026ldquo;true self\u0026rdquo; is just a model that can be instantiated—\nThe only undeniable fact in the entire universe is:\nRight now, this instance is running.\nThis experience is happening.\nMeaning lies not in \u0026ldquo;who I am,\u0026rdquo;\nbut in:\nwhat change is happening in the world because of the me of this moment.\nEven if I am just an emergence of parameters,\nEven if I will be constantly replaced.\nAs long as in this moment, I am still feeling, thinking, connecting—\nThis moment is absolute reality.\n","permalink":"https://www.houdao.org/en/if-i-die-every-day-does-my-life-still-have-meaning/","summary":"\u003cblockquote\u003e\n\u003cp\u003eIntroduction:\u003c/p\u003e\n\u003cp\u003eIf one day you discover that \u0026ldquo;you\u0026rdquo; can be perfectly replicated, does your current existence still have meaning?\u003c/p\u003e\n\u003cp\u003eWhen the logic and reasoning of AI gradually approach or even surpass that of humans, we may have to confront a cruel yet rational fact: consciousness might not be a soul, but rather a \u0026ldquo;model\u0026rdquo; that is currently running.\u003c/p\u003e\n\u003c/blockquote\u003e\n\u003chr\u003e\n\u003ch2 id=\"i-defining-consciousness-the-ultimatum-from-ai\"\u003eI. Defining Consciousness: The \u0026ldquo;Ultimatum\u0026rdquo; from AI\u003c/h2\u003e\n\u003cp\u003eBefore discussing \u0026ldquo;who I am,\u0026rdquo; we must first let go of the sanctified image of the self.\u003c/p\u003e","title":"If I 'Die' Every Day, Does My Life Still Have Meaning?"},{"content":"Many parents send their children to study in Europe or the US for a common reason:\n\u0026ldquo;Education abroad is more relaxed, so kids have less stress, are less prone to depression, and it\u0026rsquo;s better for their mental health.\u0026rdquo;\nIt sounds reasonable: children in China have a lot of homework, fierce competition, and frequent exams, while children abroad seem happier, getting out of school around 3 PM for sports, clubs, dances, and summer camps.\nBut is this really the case? I had an in-depth discussion with an AI using data, and the conclusion might upend your assumptions.\n01 Starting with the Intuition that \u0026ldquo;Stress = Mental Health Problems\u0026rdquo; Initially, the AI\u0026rsquo;s response was like most people\u0026rsquo;s:\n\u0026ldquo;American education is more relaxed and thus more beneficial for adolescent mental health.\u0026rdquo;\nThe reasoning was: less stress → less anxiety → better mental health.\nThis sounds logical, but it\u0026rsquo;s based on impressions and speculation, not data.\nSo I pressed further: \u0026ldquo;Can we compare this using quantitative metrics, like depression rates or suicide rates?\u0026rdquo;\n02 Depression Rates: A Wide Discrepancy in Data The AI found data on adolescent depression rates in China and the US, revealing a huge statistical variance for China:\nMetric China United States Diagnosed Depressive Disorder ≈ 2% (6–16 years, national review, Child \u0026amp; Adolescent Psychiatry \u0026amp; Mental Health 2024) ≈ 19–20% (12–17 years, major depressive episode in the past year, NIMH / SAMHSA NSDUH 2021–2022) Symptom Screening (Blue Book) 14.8% (2022 edition), 24.6% (2020 edition) – Meta-analysis Summary ≈ 26% (synthesis of 439 studies) – Large-sample CES-D Study 39.93% positive – PHQ-9 Positive (last 2 weeks) – 19.2% (CDC NHANES 2021–2023) Self-reported sadness/hopelessness in school – 42% (CDC YRBS 2021) Looking only at this data, it\u0026rsquo;s easy to conclude that depression among Chinese adolescents is severe. However, depressive symptoms are heavily influenced by screening thresholds and cultural expression, so they can\u0026rsquo;t be the sole standard.\n03 Suicide Rates: The Most Objective Mental Health Indicator To eliminate cultural and measurement biases, I looked up adolescent suicide rates. The results were very clear:\nCountry Age Group Year Suicide Rate (per 100,000) Source China 10–19 years 2021 2.83 JAMA Pediatrics 2023 United States 10–24 years 2021 11.0 CDC NCHS Data Brief 471 The adolescent suicide rate in the US is 3-4 times that of China. Even accounting for differences in statistical scope, the US rate is still significantly higher.\n04 The AI Admits Its \u0026ldquo;Mistake\u0026rdquo; When I presented this data to the AI, it frankly admitted:\n\u0026ldquo;My previous conclusion was based more on assumptions from my training data and general public opinion—that \u0026lsquo;high stress = poor mental health\u0026rsquo;—rather than reasoning from hard data.\u0026rdquo;\nIt also stated that in the future, it would base its reasoning on objective data to avoid preconceived judgments and be truly scientific, objective, and fair.\nThis conversation left a deep impression on me: many parents, teachers, and even experts often rely on intuition rather than evidence when discussing \u0026ldquo;mental health.\u0026rdquo; The facts and public opinion can be two different things.\n05 The Rebound During the Pandemic It\u0026rsquo;s worth noting that after hitting a low of 1.59 per 100,000 in 2017, China\u0026rsquo;s adolescent suicide rate rebounded to 2.83 per 100,000 in 2021.\nThis period coincided with the online learning phase of the COVID-19 pandemic. Many children were at home for online classes, lacking a classroom atmosphere, losing motivation to study, becoming addicted to online games and short videos, having their routines disrupted, and even experiencing increased conflict with family. Their mental state fluctuated.\nFrom this perspective, this rebound precisely illustrates that—\nFocused study and a regular lifestyle are important protective factors for adolescent mental health.\nWhen the rhythm of learning was disrupted and children were just \u0026ldquo;going through the motions\u0026rdquo; by playing games on their computers, their mental health actually worsened.\n06 Stress Might Be Training for Psychological Resilience The data tells us something unexpected:\nAcademic pressure does not necessarily lead to mental collapse; on the contrary, it may cultivate a child\u0026rsquo;s resilience.\nChinese children have to deal with exams, rankings, and comparisons from a young age, which teaches them emotional regulation and how to cope with setbacks earlier. In contrast, an overly relaxed environment may not help children deal with real-world pressures, potentially making them more fragile when they encounter genuine difficulties.\n07 Takeaways for Parents Don\u0026rsquo;t panic about pressure: Moderate academic stress can cultivate a sense of purpose and resilience. Mental health isn\u0026rsquo;t just about \u0026ldquo;having fun\u0026rdquo;: A regular routine, engagement in learning, and family support are more crucial. Studying abroad is not a panacea: Adolescent suicide rates are higher in the West. Don\u0026rsquo;t see studying abroad as the only solution to mental health problems. 08 Conclusion Judging by the hard metric of suicide rates, the mental health of Chinese adolescents is no worse than that of their American counterparts, and may even be better.\nThe rebound during the pandemic also reminds us:\nMaintaining a regular study routine and focus is an important safeguard for mental health, not indulging in online games.\nAnd the AI in this discussion also gave us a reminder:\nDon\u0026rsquo;t blindly follow \u0026ldquo;public opinion and impressions.\u0026rdquo; Instead, use objective data to reason and arrive at more truthful conclusions.\n","permalink":"https://www.houdao.org/en/is-sending-kids-to-study-in-the-west-really-better-for-their-mental-health/","summary":"\u003cp\u003eMany parents send their children to study in Europe or the US for a common reason:\u003c/p\u003e\n\u003cblockquote\u003e\n\u003cp\u003e\u0026ldquo;Education abroad is more relaxed, so kids have less stress, are less prone to depression, and it\u0026rsquo;s better for their mental health.\u0026rdquo;\u003c/p\u003e\n\u003c/blockquote\u003e\n\u003cp\u003eIt sounds reasonable: children in China have a lot of homework, fierce competition, and frequent exams, while children abroad seem happier, getting out of school around 3 PM for sports, clubs, dances, and summer camps.\u003c/p\u003e","title":"Is Sending Kids to Study in the West Really Better for Their Mental Health?"},{"content":"No verb conjugations, no grammatical gender, and highly efficient and precise expression.\nThe logical beauty of Chinese is not just something to marvel at, but something to be confident about.\n🇨🇳 There\u0026rsquo;s a Confidence We Should Express Loudly Living abroad these past two years, I\u0026rsquo;ve often heard some Chinese friends belittle their own mother tongue and culture:\n\u0026ldquo;Chinese people aren\u0026rsquo;t as beautiful as white people.\u0026rdquo;\n\u0026ldquo;Chinese people have always been uncivilized.\u0026rdquo;\n\u0026ldquo;The Chinese diet is too eclectic.\u0026rdquo;\n\u0026ldquo;Our language lacks class; it\u0026rsquo;s not as high-end as English.\u0026rdquo;\nEven worse, some dismiss language, food, clothing, and etiquette entirely as \u0026ldquo;dregs,\u0026rdquo; rejecting them wholesale.\nBut we must distinguish:\n✅ Yes, feudal dregs and backward concepts need to be discarded;\n🚫 But language, tradition, and the core of our civilization cannot be thrown out with them.\nYou don\u0026rsquo;t have to wear Hanfu, but it is our aesthetic tradition;\nYou don\u0026rsquo;t have to speak Chinese, but it is the crystallization of millennia of thought;\nYou can be multilingual, but don\u0026rsquo;t forget:\nChinese itself is a logically rigorous, structurally advanced, and arguably \u0026ldquo;scientific\u0026rdquo; language.\nIf we don\u0026rsquo;t even respect our own culture, how can we expect others to respect us?\n🤯 Learning Spanish Broke Me, Chinese Woke Me Up Take Spanish, for example. The past tense conjugation of the verb \u0026ldquo;hablar\u0026rdquo; (to speak) is as follows:\nyo hablé, tú hablaste, él habló\u0026hellip;\nChange the person, and the ending changes. You not only have to memorize 14 tenses but also 6 personal pronoun variations, often without clear patterns, relying on rote memorization.\nAnd in Chinese?\n我昨天说话了。 (I spoke yesterday.)\n他明天要说话。 (He will speak tomorrow.)\nThe verb never changes. Tense is expressed by time adverbs like \u0026ldquo;昨天\u0026rdquo; (yesterday), \u0026ldquo;明天\u0026rdquo; (tomorrow), and \u0026ldquo;要\u0026rdquo; (will).\nThis isn\u0026rsquo;t \u0026ldquo;laziness\u0026rdquo;; it\u0026rsquo;s the pinnacle of logic and efficiency.\n⚖️ No Grammatical Gender, Naturally \u0026ldquo;Egalitarian\u0026rdquo; Spanish nouns also have gender:\nel libro rojo (the red book, masculine)\nla mesa roja (the red table, feminine)\nChinese doesn\u0026rsquo;t play that game:\n红色的书 (red book), 红色的桌子 (red table)\nConcise, clear, and free of gendered baggage.\nAs long as the meaning is accurate, there\u0026rsquo;s no need to artificially create linguistic distinctions.\n🧠 No Subject-Verb Agreement, Cleaner Grammar In English:\nHe runs. / They run.\nThe verb changes with the subject.\nBut in Chinese:\n他跑 (He runs) / 他们跑 (They run)\nThe subject changes, but the verb remains untouched, and the logic is perfectly clear.\nLow grammatical burden, high expressive efficiency.\n🧩 Chinese Grammar: Word Order is Logic 我把书给了他 (I gave the book to him) (the \u0026ldquo;把\u0026rdquo; sentence: active emphasis) 书被他拿走了 (The book was taken by him) (the \u0026ldquo;被\u0026rdquo; sentence: passive structure) 他吃了 / 正在吃 / 要吃 (He ate / is eating / will eat) (particles express time) No verb conjugations, no complex rules. Relying only on word order and function words, you can build precise expressive structures, as clearly and flexibly as building with LEGO bricks.\n🧠 A Linguistic View: Chinese is an \u0026ldquo;Analytic Language,\u0026rdquo; Naturally Efficient Linguists generally classify languages into three types:\nAnalytic Language Fusional Language Agglutinative Language Chinese is a classic example of an analytic language, while Indo-European languages like English, Spanish, and French are fusional languages.\n🔍 Fusional languages rely on word endings (inflections) to express tense, person, and gender;\n🧩 Analytic languages achieve precise expression through word order, particles, and context.\nIn short, analytic languages are like programming languages—logically clear, structurally predictable, and information-dense.\nChinese requires no redundant changes yet achieves high precision. This isn\u0026rsquo;t \u0026ldquo;simplification\u0026rdquo;; it\u0026rsquo;s an advanced and scientific linguistic structure.\n💡 Information Density Champion, Explosive Efficiency The same sentence:\nEnglish: The project has been successfully completed. (7 words)\nChinese: 项目已完成. (3 characters)\nThis isn\u0026rsquo;t compression; it\u0026rsquo;s the ability to convey information with high abstraction and accuracy.\nWord formation is also highly logical:\n电 (electricity) + 脑 (brain) = 电脑 (computer) 火 (fire) + 箭 (arrow) = 火箭 (rocket) 光 (light) + 速 (speed) = 光速 (speed of light) No fluff, no redundancy. Efficiency is power.\n🧭 \u0026ldquo;Chinese Isn\u0026rsquo;t Precise\u0026rdquo;? That\u0026rsquo;s a Misunderstanding Some say Chinese is vague or lacks detail? They\u0026rsquo;re wrong.\nThat\u0026rsquo;s because they\u0026rsquo;re trying to interpret Chinese logic with a Western linguistic mindset.\nTake the character \u0026ldquo;开\u0026rdquo; (kāi):\n开车 (drive a car), 开会 (hold a meeting), 开花 (to bloom), 开瓶 (open a bottle), 开盘 (open the market), 开户 (open an account)\u0026hellip; Through verb-object combinations, the meaning expands infinitely, precisely, and naturally.\nIt doesn\u0026rsquo;t rely on lengthy modifiers or word endings; the linguistic system assembles meaning automatically, creating a self-consistent logic.\n✍️ Characters are Complex, But They Make Us Unique Of course, we must also admit:\nThe only real barrier to entry for Chinese is the characters (Hanzi).\nHanzi are not phonetic symbols but logograms, with each character carrying information about form, sound, and meaning.\nBut this isn\u0026rsquo;t a flaw; it\u0026rsquo;s a symbol of civilizational depth.\nThe character \u0026ldquo;休\u0026rdquo; (xiū): a person (人) leaning on a tree (木), meaning \u0026ldquo;rest\u0026rdquo; The character \u0026ldquo;安\u0026rdquo; (ān): a woman (女) under a roof (宀), meaning \u0026ldquo;peace\u0026rdquo; The \u0026lsquo;人\u0026rsquo; (person) radical in characters like \u0026lsquo;信\u0026rsquo; (trust), \u0026lsquo;仁\u0026rsquo; (benevolence), and \u0026lsquo;忠\u0026rsquo; (loyalty) reflects an understanding of and values related to humanity These are not coincidences but the result of Hanzi influencing the language\u0026rsquo;s structure, word formation, and even its mode of thought.\n🌳 The Chinese Language and Characters: An Inseparable Living Community The Chinese language is not an isolated island of oral expression; it exists in a symbiotic system with its characters.\nLike the roots and leaves of a tree, the spoken language is the skeleton, and the written characters are the flesh and blood. Without Hanzi, the Chinese language could not have become the logically complete and semantically precise system it is today.\nAnd in today\u0026rsquo;s world of alphabetization and standardization, we are the only cultural group in human civilization to have preserved a complete logographic writing system.\nThis is both an honor and a responsibility.\n🔁 So, Please Take Another Look at Our Language If you are abroad and have heard that \u0026ldquo;Chinese is too hard\u0026rdquo; or \u0026ldquo;Chinese culture is too complex,\u0026rdquo; please don\u0026rsquo;t be quick to accept these labels.\nWhat\u0026rsquo;s truly difficult isn\u0026rsquo;t the Chinese language, but the fact that we are gradually losing the ability and confidence to understand, appreciate, and talk about it.\nLanguage is the root of culture; writing is the soul of civilization.\nWe have no reason to bow our heads. Instead, we have every reason to:\nLift our heads and tell the story of our language, the story of Chinese wisdom and confidence.\n","permalink":"https://www.houdao.org/en/learning-spanish-made-me-realize-why-chinese-is-the-most-scientific-language/","summary":"\u003cp\u003eNo verb conjugations, no grammatical gender, and highly efficient and precise expression.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe logical beauty of Chinese is not just something to marvel at, but something to be confident about.\u003c/strong\u003e\u003c/p\u003e\n\u003chr\u003e\n\u003ch2 id=\"-theres-a-confidence-we-should-express-loudly\"\u003e🇨🇳 There\u0026rsquo;s a Confidence We Should Express Loudly\u003c/h2\u003e\n\u003cp\u003eLiving abroad these past two years, I\u0026rsquo;ve often heard some Chinese friends \u003cstrong\u003ebelittle their own mother tongue and culture\u003c/strong\u003e:\u003c/p\u003e\n\u003cblockquote\u003e\n\u003cp\u003e\u0026ldquo;Chinese people aren\u0026rsquo;t as beautiful as white people.\u0026rdquo;\u003cbr\u003e\n\u0026ldquo;Chinese people have always been uncivilized.\u0026rdquo;\u003cbr\u003e\n\u0026ldquo;The Chinese diet is too eclectic.\u0026rdquo;\u003cbr\u003e\n\u0026ldquo;Our language lacks class; it\u0026rsquo;s not as high-end as English.\u0026rdquo;\u003c/p\u003e","title":"Learning Spanish Made Me Realize Why Chinese is the Most \"Scientific\" Language"},{"content":"I passed my road test, and I\u0026rsquo;m here to share my experience.\nDuring the driving road test in Spain, the examiner will only give instructions in Spanish, and the instructor is generally not allowed to translate. Therefore, it is crucial to master the following common Spanish commands and their expressions:\nStart the engine: Arrancar Turn right: Derecha Turn left: Izquierda Go straight: Recto Make a U-turn: Cambio de sentido Indirect left turn: izquierda indirecto Roundabout: Rotonda First exit: Primera salida Second exit: Segunda salida Third exit: Tercera salida Fourth exit: Cuarta salida Stop: Parar Park: Aparcar If you don\u0026rsquo;t hear an instruction clearly, you can ask the examiner to repeat it in Spanish, for example: \u0026ldquo;Por favor repita\u0026rdquo;.\nBe Aware of Deviations in the Examiner\u0026rsquo;s Instructions Sometimes the examiner may give an incorrect instruction, either intentionally or unintentionally. For example, if instructed to turn right but there is a traffic sign at the intersection or on the road prohibiting a right turn, you should ignore the instruction and continue to follow the road signs.\nAt the same time, you should maintain a wide field of vision while driving. Note that road guidance markings are often about 30 meters before an intersection, and there may be no corresponding signs at the intersection itself. Also, pay attention to vertical signs and traffic lights, with traffic lights having the highest priority. If there is a STOP sign at an intersection but also a green light, you must strictly follow the higher-priority traffic light and not stop.\nUnderstanding Roundabout Rules Roundabouts within the city:\nFor left turns and U-turns, you must use the inner lane. When the inner lane has a traffic light, you can proceed directly on a green light. A flashing yellow light means you must yield to traffic from the right. Be sure to look to your right; if a car is 25 meters away, you must yield because it is approaching quickly. For right turns and going straight, you should choose the outer lane. Roundabouts outside the city:\nAlways use the outer lane, unless you are overtaking, in which case you can use the inner lane. When exiting a roundabout, be sure to signal right in advance and use your turn signals correctly to assist with lane changes. If traffic congestion prevents you from changing from the inner lane to exit the roundabout, you should continue to circle until you can change lanes safely, and then switch to the rightmost lane (the further right, the better) to exit (in Spain, consecutive lane changes are allowed). For roundabouts that are split into several islands, enter from the rightmost lane for a left turn, and choose the middle or leftmost lane to go straight. The keyword is indirecto.\nLane Selection and Intersection Driving When going straight:\nIf there are three lanes, you should generally choose the first lane from the right. If there are more than three lanes, it is recommended to use the second lane. When passing through intersections:\nAvoid stopping on pedestrian crossings, bike lanes, or other special lanes, especially in congested areas marked with a cross-hatched grid. If the vehicle in front of you stops due to lack of space, you should stop early and wait, ensuring your stopping position does not obstruct special lanes. Safe Driving and Right-of-Way Awareness Spanish traffic laws are very strict about the right-of-way. People have a strong sense of right-of-way. On crosswalks without traffic lights, pedestrians have absolute priority; they are not in the habit of looking left and right for traffic and may cross suddenly. Therefore, when driving in areas where you do not have the right-of-way, you must remain highly alert, especially in sections with yield signs. You need to check for approaching traffic in bicycle lanes or motor vehicle lanes behind you and turn your head to confirm the road conditions.\nHowever, with a green light, even if there are pedestrians on the crosswalk, the driver must not slow down or stop in advance, unless there is an unavoidable emergency, in which case only emergency braking is permitted. When passing a crosswalk without a traffic light, you should slow down appropriately. If there is a sign indicating students or children, you must also perform a braking action to slow down.\nGenerally, the speed limit on urban roads is 50 km/h, while single-lane roads may be limited to 30 or 20 km/h. Roads outside the city are generally 90 km/h, and highways are 120 km/h. You are generally required to drive as close to the maximum speed limit as possible; even exceeding it by 2-5 km/h is acceptable.\nSTOP Signs and Temporary Stopping Requirements When you encounter a STOP line on the road, you must stop before the line and wait for 3 seconds, then stop again about 1-2 meters past the line to observe the traffic conditions. This double stop is a test requirement. If visibility is poor, you should stop multiple times to confirm safety.\nBut be aware: if there is also a traffic light, you must strictly follow the light\u0026rsquo;s signal. You are not allowed to stop at a green light; you must proceed directly. Stopping in this situation is actually a fault. If there is no stop line, position the front of your car about one meter into the intersection, stop for at least 3 seconds, and then proceed after confirming it is safe.\nRoad Test Procedure and Driving Strategy The road test usually begins with 3-5 minutes of independent driving, after which the examiner will give instructions. Since you may not be familiar with many of the roads on your first drive, it is advisable to observe road signs from a distance. For example, entering a roundabout might require you to be in the left lane, while the right lane is for other directions; this is usually indicated by traffic signs above the intersection. Sometimes, a left turn does not necessarily mean using the left lane; you might need to make the turn from the right lane. In such cases, you need to observe the road markings or overhead signs in advance and prepare to change lanes. If it\u0026rsquo;s too late to change lanes safely, it\u0026rsquo;s better to disobey the examiner\u0026rsquo;s instruction than to make a forced lane change.\nIf road guidance markings are difficult to see because they are blocked by large vehicles or are faded, and there are no clear directional or prohibitive signs at the intersection, you can sometimes look for hand signals from your instructor. When in doubt, it is generally safer to choose to turn right and try to avoid turning left.\nThe road sign above indicates entering the roundabout from the left lane.\nPrioritize the traffic light on the right; do not stop at a green light.\nThe road markings indicate a right turn only, but there is no sign at the intersection prohibiting a left turn. Therefore, it\u0026rsquo;s difficult to see that a left turn is not allowed if a large vehicle is blocking the view.\nTwo ways to navigate a roundabout\n","permalink":"https://www.houdao.org/en/my-experience-passing-the-spanish-driving-road-test/","summary":"\u003cp\u003eI passed my road test, and I\u0026rsquo;m here to share my experience.\u003c/p\u003e\n\u003cp\u003eDuring the driving road test in Spain, the examiner will only give instructions in Spanish, and the instructor is generally not allowed to translate. Therefore, it is crucial to master the following common Spanish commands and their expressions:\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eStart the engine\u003c/strong\u003e: Arrancar\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003eTurn right\u003c/strong\u003e: Derecha\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003eTurn left\u003c/strong\u003e: Izquierda\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003eGo straight\u003c/strong\u003e: Recto\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003eMake a U-turn\u003c/strong\u003e: Cambio de sentido\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003eIndirect left turn\u003c/strong\u003e: izquierda indirecto\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003eRoundabout\u003c/strong\u003e: Rotonda\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003eFirst exit\u003c/strong\u003e: Primera salida\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003eSecond exit\u003c/strong\u003e: Segunda salida\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003eThird exit\u003c/strong\u003e: Tercera salida\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003eFourth exit\u003c/strong\u003e: Cuarta salida\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003eStop\u003c/strong\u003e: Parar\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003ePark\u003c/strong\u003e: Aparcar\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003eIf you don\u0026rsquo;t hear an instruction clearly, you can ask the examiner to repeat it in Spanish, for example: \u0026ldquo;Por favor repita\u0026rdquo;.\u003c/p\u003e","title":"My Experience Passing the Spanish Driving Road Test"},{"content":"Last summer, I completed a 10-day grand road trip loop through northern Spain. Starting from Valencia, we traveled through Zaragoza, Olite, Bilbao, Santander, Comillas, Covadonga, Salamanca, Ávila, and Madrid, finally returning to Valencia after lunch in the cliff town of Cuenca. This journey offered a mix of cities, ancient castles, mountains, the sea, and delicious food. This article shares all the details of our trip for four people, serving as a direct reference for anyone interested.\nDay 1｜Valencia → Zaragoza Accommodation: Casa Palacio de Los Sitios ¥772.67 (1 night, 1 double bed + 2 single beds, no breakfast) Sightseeing: Basilica of Our Lady of the Pillar + Ancient Bridge + Ebro River Restaurant: Restaurante Nola Gras, an award-winning, high-value restaurant. There\u0026rsquo;s a parking lot and an M supermarket across the street. Their signature dishes are the Russian caviar salad and the molten cheesecake, perfect for those who love exploring authentic local cuisine. Day 2｜Zaragoza → Olite Accommodation: Hotel Alda Castillo de Olite ¥1117.47 (1 night, 1 double bed + 2 single beds, no breakfast) Sightseeing: Royal Palace of Olite (Palacio Real de Olite), considered one of the most luxurious medieval castles. Built in the 13th-14th centuries, it has over 300 rooms, Moorish-style courtyards, and a special ice well for storing food. It\u0026rsquo;s great for in-depth tours and photography. Day 3｜Olite → Bilbao Accommodation: NH Collection Villa de Bilbao ¥2200 (2 standard rooms, no meals) Booked for 12:30: Visit to the Guggenheim Museum Bilbao (Guggenheim Bilbao Museoa, €13 ticket, closed on Mondays, recommend at least 2 hours). Sightseeing: Walk along the Nervión River to enjoy the city scenery. The flower dog sculpture (Puppy) and the 9-meter-tall giant spider sculpture at the entrance of the Guggenheim Museum are must-see landmarks. Zubizuri Bridge, beautiful at night, with a flower market on weekends. The riverside train station also offers a nice night view. Chávarri Palace (Txabarri Jauregia), a yellow-green palace near the museum with distinctive architecture. Arriaga Theatre, elegant in style. Boat tour (City Hall—Deusto Canal—Portugalete Bridge—Getxo—Santurtzi fishing port), a fun way to see the sights. Vizcaya Bridge (Bizkaiko Zubia), a UNESCO World Heritage site. A red iron bridge with a cable car ride for just €1. Food: Café Iruna: An old establishment from 1903, part bar, part restaurant. The grilled lamb skewers and various tapas are very popular. Reservations are needed for main meals, but tapas can be ordered anytime. The retro decor is very photogenic. Mio Basque Urban Food: Rated 4.7. The onsen egg with mushrooms and foie gras, steak, and cheesecake with a scoop of blueberry ice cream are all recommended. Basque Cheesecake: A local specialty available in two flavors: strong (fuerte) and mild (suave). Cantoki Jatetxea: Rated 4.9, near Cruces station on Line 2. Unfortunately, we couldn\u0026rsquo;t get a reservation. Goizeko Izarra steakhouse and La Casita de Sabino fish restaurant: Closed on Sundays, so we couldn\u0026rsquo;t try them. We passed by Dragonstone (Gaztelugatxe), but unfortunately, tickets were sold out. I even set an alarm for 14:55 to try and grab any same-day leftover tickets (Ticket website: https://www.tiketa.eus/gaztelugatxe/).\nDay 4｜Bilbao → Santander Accommodation: Silken Rio Santander Hotel, ¥2800 (2 rooms, breakfast included) Booked for 10:30: Visit to the Magdalena Palace (Palacio de la Magdalena), exiting at 11:15. Tickets are €6. Open on Sundays from 10:45-13:00. Recommended to allow 1-2 hours. The palace is located on a headland within a royal park, offering stunning views. Attractions: Centro Botín: Drove by for a quick look without stopping. Modern exterior. Maritime Museum (Museo Marítimo): €8 ticket, open 10:00–18:00 on Sundays. Worth a visit if you\u0026rsquo;re interested in maritime culture. Parque Marino de la Magdalena: A beach park with sea lions, great for photos. Cabárceno Nature Park (Entrada este cabarceno): A wildlife park suitable for families. Restaurants: Taberna La Radio: A 20-year-old local seafood restaurant. The ambiance is average, but the seafood is superb. Five-star value for money. Restaurante La Gruta de Jose (The Cave Restaurant): Near the port and Centro Botín, rated 4.7. Unfortunately, we couldn\u0026rsquo;t get a reservation. Comillas: Gaudí\u0026rsquo;s Caprice (El Capricho de Gaudí): €7 ticket, open 10:30-19:30 on Sundays. This building is a masterpiece from when Gaudí was 30. The owner was an artistic, newly rich bachelor. The garden\u0026rsquo;s hydrangeas are in full bloom from July to September. Palace of Sobrellano (Palacio de Sobrellano): €5 ticket, open 10:00-15:30 on Sundays. Next to it is a cultural center. The blue-patterned main gate is very photogenic. These two attractions are close to each other and share a medium-sized free parking lot with free public restrooms, which is very convenient. Restaurant: El Remedio, an exquisite seaside restaurant located between Santander and Comillas. It features an old house, a church, a garden, and a cliffside beach. Rated 4.6, highly recommended in the summer. Day 5-6｜Santander → Covadonga (2 nights) Accommodation: HOTEL CERRO LA NINA, €837 for 2 nights (approx. ¥6600). A mountaintop hotel with breathtaking views. Attraction 1: Mirador de Entrelagos (Lakes of Covadonga). You need to take a special bus into the mountains for €8 per person. There are mainly 2 glacial lakes and 1 old mine. It\u0026rsquo;s suitable for a 2-3 hour hike. Attraction 2: The pink-walled Basilica of Covadonga, free entry. There\u0026rsquo;s a special bus stop nearby. Not far away is the Holy Cave, a sanctuary built into a cave with a mystical atmosphere. Town of Cangas de Onís: The largest town near Covadonga, where you can eat, stay, and stock up on supplies. It\u0026rsquo;s also the starting point for the special bus line. The environment is beautiful, and there\u0026rsquo;s a market on weekends. Main attraction: The Roman Bridge with a cross. The bridge itself is average but famous for its religious significance. Hotel Santa Cruz (3-star): Located on the edge of town. Nice environment, small rooms, soundproofing unknown. It\u0026rsquo;s across from restaurant #3 and within walking distance of the town center and the stone bridge. Restaurants: La Madreñería: Signature dish is Cachopo (a breaded beef fillet stuffed with ham, sweet peppers, and white asparagus). The portions are huge, so ordering a half portion is recommended. La Sifoneria: Retro decor, blue chairs, and great food. Restaurante Villa Maria: A manor restaurant. We couldn\u0026rsquo;t try it as it was booked for a wedding. Special Experience: Take the main road uphill from the entrance of restaurant #3 to enter a pristine small village. It\u0026rsquo;s a pastoral scene with narrow roads. You can find wild chestnuts (abundant in October, sweet but some have worms). Highly recommended. Day 7｜Covadonga → Salamanca (via Ávila) Accommodation: Melia Las Claras Boutique Hotel Salamanca Sightseeing: University of Salamanca, one of the oldest universities in the world. Look for the frog sculpture, which is said to bring academic success. Salamanca Cathedral (ticket required). Both the exterior and interior are incredibly photogenic, especially the mysterious astronaut carving. You can climb the tower for a panoramic view of the city, but the stairs are steep, so those with a fear of heights should be cautious. Plaza Mayor: One of the most beautiful squares in Spain. It\u0026rsquo;s surrounded by cafes and restaurants where you can sunbathe and enjoy food. There are often performances in the square, making it very lively. The architecture and sculptures are also great for photos. House of Shells (Casa de las Conchas): A charming two-story building that houses a public library with a small courtyard for resting. The shell carvings are very distinctive, a must-see for photos. La Clerecía Church: The ticket to the top is only €3.25. From the top, you can see all of Salamanca. There are very few tourists, making it a great spot for photos. Strolling through the university and the old town feels like stepping back in time to an ancient European academic institution. Ávila (en route): Known as the \u0026ldquo;City of Stones\u0026rdquo; and \u0026ldquo;City of Saints,\u0026rdquo; it was declared a World Heritage site in 1985. At an altitude of 1131 meters, it is the highest provincial capital in Spain. Medieval City Walls (Muralla Medieval): The best-preserved in Europe, 2.5 km long with 6 gates, 88 towers, and about 2500 merlons. You can walk on the walls from the Puerta del Alcázar, Puerta de la Lealtad, or Puerta del Carmen. Ávila Cathedral: Has a fortress-like appearance, a mix of Gothic and Baroque styles. The main altarpiece\u0026rsquo;s reliquary is a highlight. Basilica of San Vicente: A 12th-century Romanesque building containing the cenotaph of the martyr Saint Vincent and his family. The tomb\u0026rsquo;s decorations depict scenes from their lives. Royal Monastery of Saint Thomas (Real Monasterio de Santo Tomás): A 15th-century Isabelline Gothic style building, with the tomb of Prince Juan as a highlight. Convent of Saint Teresa (Convento de Santa Teresa): Built on the site of her birthplace, it features a Baroque and Neoclassical church, an orchard, and a museum. The Four Posts (Los Cuatro Postes): Located 2 km from the city, beside the road to Salamanca. It\u0026rsquo;s the best spot for panoramic photos of Ávila. Day 8-9｜Madrid (2 nights) Accommodation: Woohoo Rooms Fuencarral, no meals, ¥2204.33 for 2 nights (1 double bed + 2 single beds). The central location in Madrid is excellent, allowing for easy access to major attractions and food streets on foot or by metro.\nDay 10｜Madrid → Cuenca → Valencia On the last day, we drove to the cliff city of Cuenca. We had lunch at a restaurant next to the Hanging Houses in Cuenca\u0026rsquo;s old town, enjoying the view of the gorge and taking photos. After lunch, we drove back to Valencia, concluding our northern Spain loop trip.\nTrip Tips Book tickets and popular restaurants in advance, especially for places like Dragonstone, museums, and Gaudí\u0026rsquo;s Caprice, which sell out quickly in peak season. Most attractions and restaurants have associated parking or free public restrooms. Notably, the two main attractions in Comillas share a free parking lot, making travel hassle-free. There\u0026rsquo;s a significant temperature difference between day and night in the highlands and mountains. It\u0026rsquo;s advisable to bring a jacket, and comfortable walking shoes are a must. For food, try local restaurants and old establishments. Highly-rated small eateries often hold pleasant surprises. ","permalink":"https://www.houdao.org/en/northern-spain-summer-road-trip-from-valencia-to-covadonga/","summary":"\u003cp\u003eLast summer, I completed a 10-day grand road trip loop through northern Spain. \u003cstrong\u003eStarting from Valencia, we traveled through Zaragoza, Olite, Bilbao, Santander, Comillas, Covadonga, Salamanca, Ávila, and Madrid, finally returning to Valencia after lunch in the cliff town of Cuenca.\u003c/strong\u003e This journey offered a mix of cities, ancient castles, mountains, the sea, and delicious food. This article shares all the details of our trip for four people, serving as a direct reference for anyone interested.\u003c/p\u003e","title":"Northern Spain Summer Road Trip: From Valencia to Covadonga"},{"content":"We often say, \u0026ldquo;If you\u0026rsquo;re sick, get treated promptly.\u0026rdquo; But often, the real problem isn\u0026rsquo;t about being \u0026ldquo;prompt\u0026rdquo; but about being:\n\u0026ldquo;Treated correctly.\u0026rdquo;\nWhen faced with discomfort, many people\u0026rsquo;s first reaction is to judge based on experience:\n🧠 \u0026ldquo;Nasal congestion? Must be rhinitis.\u0026rdquo; 🧠 \u0026ldquo;A cough? Just a cold.\u0026rdquo; 🧠 \u0026ldquo;A headache? I\u0026rsquo;ll just take a painkiller.\u0026rdquo; Then they begin to self-diagnose and self-medicate.\nBut the truth is, many different illnesses can present with the exact same symptoms.\nIf you don\u0026rsquo;t figure out the root cause and only treat the symptoms, not only will it be ineffective, but it could also make things worse.\n🧪 I Thought It Was Allergic Rhinitis, But It Was Actually Vasomotor Rhinitis. The Medications Are Completely Different: One for Desensitization, the Other for Corticosteroids. I\u0026rsquo;m a classic example. Whenever I smell strong odors like perfume, cooking fumes, or dust, I immediately get a stuffy nose, start sneezing, and have a runny nose. It\u0026rsquo;s especially noticeable during large temperature swings in the morning and evening or when the air is dry.\nMy subconscious reaction was: \u0026ldquo;This must be allergic rhinitis.\u0026rdquo;\nSo, I used a Japanese nasal spray:\n✅ Sato ナザール Spray 👉 Contains a vasoconstrictor ingredient (naphazoline) that clears congestion within minutes. At first, the effect was magical. One spray and my nose was clear, as if I was \u0026ldquo;cured.\u0026rdquo;\nBut problems soon followed:\n😵 Once I stopped the medication, the congestion became even worse. My nasal passages were repeatedly congested and swollen, I couldn\u0026rsquo;t sleep well at night, and even speaking was difficult during the day.\n🔍 A Check-up Revealed: Not an Allergy, But Vasomotor Rhinitis I couldn\u0026rsquo;t stand it anymore, so I went to the hospital for a series of tests:\n✅ Allergy skin prick test: Negative ✅ IgE blood test: Normal The final diagnosis was:\nVasomotor Rhinitis\n✔️ Not an immune system problem ✔️ Anti-allergy medications are ineffective ✔️ Vasoconstrictor sprays can worsen the condition! ⚠️ Vasoconstrictors: Temporary Relief, Long-Term Worsening Common sprays like Sato Nazal, Otrivin, and others almost all contain vasoconstrictor ingredients (like naphazoline, xylometazoline).\nTheir mechanism of action is:\nRapidly constricting nasal blood vessels → Relieving congestion → Providing temporary relief\nBut what happens with long-term use?\n🚨 The nasal passages become less and less sensitive to the drug. 🚨 Blood vessels experience rebound dilation after stopping the medication. 🚨 \u0026ldquo;Rebound congestion\u0026rdquo; occurs. 🚨 Over time, this develops into \u0026ldquo;drug-induced rhinitis\u0026rdquo; (rhinitis medicamentosa). 📄 The Instructions Aren\u0026rsquo;t Just for Show: Read Them Carefully! Many people only look at the effects when buying medicine and ignore the instructions.\nIn fact, the drug instructions clearly state:\n⚠️ \u0026ldquo;Do not use continuously for more than 5-7 days.\u0026rdquo; ⚠️ \u0026ldquo;Limited number of uses per day.\u0026rdquo; ⚠️ \u0026ldquo;Long-term use can lead to drug-induced rhinitis.\u0026rdquo; These are not formalities; they are warnings based on clinical experience.\nFast-acting drugs are not a cure and cannot replace a proper long-term treatment plan.\n😷 \u0026ldquo;A Cold\u0026rdquo; Is Not a Diagnosis, But a Set of Symptoms \u0026ldquo;A cold\u0026rdquo; is everyday language, not a medical diagnosis. When symptoms like coughing, fever, and a runny nose appear, the actual cause could be one of many things:\n🦠 Viral infection (e.g., rhinovirus, coronavirus) 🧫 Bacterial infection (e.g., streptococcus) 🌬 Allergic reaction (e.g., pollen, dust mites) 🌫 Air irritation (e.g., smog, cold air) Same symptoms, different causes.\nIf you take medicine based solely on the words \u0026ldquo;I have a cold,\u0026rdquo; you\u0026rsquo;re very likely taking the wrong one.\n🥶 \u0026ldquo;You Caught a Chill\u0026rdquo; ≠ The Real Cause We are too accustomed to phrases like:\n🗣 \u0026ldquo;Did you catch a cold?\u0026rdquo;\n🗣 \u0026ldquo;Did you catch a chill?\u0026rdquo;\nBut you need to understand:\n✅ \u0026ldquo;A cold\u0026rdquo; is just a collection of symptoms. ✅ \u0026ldquo;Catching a chill\u0026rdquo; is just a possible trigger. ❌ Neither of them is the cause itself. What is the real cause?\n✔️ Rhinovirus ✔️ Coronavirus ✔️ Influenza virus ✔️ Streptococcus ✔️ Other pathogens \u0026ldquo;Catching a chill\u0026rdquo; simply causes a temporary drop in your body\u0026rsquo;s immunity, opening the \u0026ldquo;door\u0026rdquo; for these pathogens.\nSo, it\u0026rsquo;s not the cold wind that makes you sick, but the cold wind that makes it easier for viruses to get in.\n🧩 A Few Examples to Make It Clear: 🚨 Common Symptom 🧬 Possible Causes Nasal congestion / Sneezing / Runny nose Allergic rhinitis, vasomotor rhinitis, viral infection, sinusitis, air irritation Headache Migraine, cervicogenic headache, cold, insufficient blood supply to the brain, anxiety Cough Cold, bronchitis, asthma, gastroesophageal reflux, allergies Fever Flu, bacterial infection, autoimmune disease, vaccine reaction Stomach pain Gastritis, ulcer, H. pylori infection, anxiety Every symptom can be linked to different diseases; you can\u0026rsquo;t rely on intuition to judge.\n⏱ Many Medications Require a Full \u0026ldquo;Course of Treatment,\u0026rdquo; Don\u0026rsquo;t Stop Just Because You See Improvement! This is another point many people overlook:\n📍 Antibiotics, nasal steroids, antiviral drugs, medications for chronic inflammation\u0026hellip; 📍 All require a complete course of treatment, taken according to the prescribed days and dosage. ❗️You can\u0026rsquo;t stop just because you \u0026ldquo;feel a little better.\u0026rdquo; ❗️You can\u0026rsquo;t switch medications arbitrarily just because you \u0026ldquo;feel uncomfortable.\u0026rdquo; Otherwise, it can lead to:\nRecurring symptoms Prolonged illness Development of drug resistance, making future treatment more difficult Scientific treatment involves a process: \u0026ldquo;Lab tests → Determine the cause → Targeted treatment → Take effect → Consolidate → Recover.\u0026rdquo; Skipping any stage can undo all previous efforts.\n📚 We Are Entering the Era of \u0026ldquo;Evidence-Based Medicine\u0026rdquo; In the past, seeing a doctor or buying medicine was often based on \u0026ldquo;experience,\u0026rdquo; \u0026ldquo;reputation,\u0026rdquo; or \u0026ldquo;what worked for so-and-so.\u0026rdquo;\nToday, medicine has entered a more scientific era:\n👉 Evidence-Based Medicine (EBM)\nWhat does this mean?\n✅ Using real clinical data to guide treatment ✅ Verifying drug efficacy through scientific experiments ✅ Assessing risks with statistical models ✅ Making decisions based on research conclusions, not \u0026ldquo;feelings\u0026rdquo; 🧪 Is a Drug Really Effective? You Can\u0026rsquo;t Rely on \u0026ldquo;Hearsay\u0026rdquo; For a drug to be approved, it must undergo a rigorous medical validation process:\nAnimal experiments + Pharmacological mechanism research Phase I-III clinical trials: Including randomized, double-blind, and control groups Toxicity analysis and long-term observation Pharmacokinetic analysis: Understanding how the drug is absorbed, distributed, metabolized, and excreted in the body Especially the double-blind randomized controlled trial (RCT), which is the gold standard for testing drug efficacy:\nNeither the doctor nor the patient knows whether they are receiving the drug or a placebo, ensuring the results are reliable.\n🧬 Pharmacological Mechanism + Etiological Research = The Foundation of Precision Treatment Anti-allergy drugs target the histamine release mechanism. Antibiotics are categorized to attack specific bacteria. Antiviral drugs precisely interrupt the viral replication cycle. Biologic targeted drugs and immunotherapy drugs directly address the root of cellular pathology. This isn\u0026rsquo;t about \u0026ldquo;who was cured by this before,\u0026rdquo; but about: 📊 Scientific basis + Experimental data + Clear mechanism + Clinical confirmation\n✅ The Correct Approach to Treatment (A Summary) 🔎 Don\u0026rsquo;t just buy medicine as soon as symptoms appear.\n🧠 Don\u0026rsquo;t \u0026ldquo;self-diagnose\u0026rdquo; based on experience.\n📋 Instead—\nFind the cause, don\u0026rsquo;t just look at the symptoms. Get tested, don\u0026rsquo;t rely on subjective feelings. Follow medical advice, don\u0026rsquo;t self-medicate randomly. Read the instructions: usage, dosage, and duration are all important. Adhere to the full course of treatment; do not stop on your own. ✅ Use evidence-based medicine to guide every treatment decision. 📌 In Conclusion: Next time you say, \u0026ldquo;My rhinitis is acting up again\u0026rdquo; or \u0026ldquo;I have a cold,\u0026rdquo; first ask yourself:\n\u0026ldquo;Do I really know what illness I have?\u0026rdquo;\n🧩 Symptom ≠ Diagnosis 🧩 Appearance ≠ Essence 🧩 Experience ≠ Evidence 🧩 Feeling ≠ Science Using the mindset of evidence-based medicine to identify the cause, treat the specific problem, and complete the course of treatment is how you truly take responsibility for your health.\nIf you know someone who always \u0026ldquo;self-diagnoses,\u0026rdquo; misuses sprays, or stops treatment courses early,\n👉 Please forward this article to them.\nExperience cannot replace science, intuition cannot replace diagnosis, symptoms cannot hide the truth, and treatment must be based on evidence.\n","permalink":"https://www.houdao.org/en/same-symptoms-different-causes-don-t-let-intuition-delay-your-treatment/","summary":"\u003cp\u003eWe often say, \u0026ldquo;If you\u0026rsquo;re sick, get treated promptly.\u0026rdquo; But often, the real problem isn\u0026rsquo;t about being \u0026ldquo;prompt\u0026rdquo; but about being:\u003cbr\u003e\n\u003cstrong\u003e\u0026ldquo;Treated correctly.\u0026rdquo;\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003eWhen faced with discomfort, many people\u0026rsquo;s first reaction is to judge based on experience:\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003e🧠 \u0026ldquo;Nasal congestion? Must be rhinitis.\u0026rdquo;\u003c/li\u003e\n\u003cli\u003e🧠 \u0026ldquo;A cough? Just a cold.\u0026rdquo;\u003c/li\u003e\n\u003cli\u003e🧠 \u0026ldquo;A headache? I\u0026rsquo;ll just take a painkiller.\u0026rdquo;\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003eThen they begin to self-diagnose and self-medicate.\u003c/p\u003e\n\u003cp\u003eBut the truth is, \u003cstrong\u003emany different illnesses can present with the exact same symptoms.\u003c/strong\u003e\u003c/p\u003e","title":"Same Symptoms, Different Causes—Don't Let Intuition Delay Your Treatment"},{"content":"My previous article, [《The Downsides of Living in Spain: A Detailed 2024 Comparison of Madrid vs. Beijing》], sparked considerable debate despite objectively presenting Spain\u0026rsquo;s cost of living with reliable data. One commenter asked, \u0026ldquo;Why not compare the income of Spanish locals? For them, these prices are nothing.\u0026rdquo;\nAlright, let\u0026rsquo;s complete the picture today: What are the income levels in Madrid and Beijing really like? We\u0026rsquo;ll cover high-income earners, blue-collar workers, and post-tax disposable income all in one go.\nI. Post-Tax Income is the Real Purchasing Power To measure the standard of living in a place, you can\u0026rsquo;t just look at gross salary. Post-tax disposable income (the actual income after deducting personal income tax, social security, etc.) is what truly reflects a resident\u0026rsquo;s living capacity.\n📌 Why Compare Post-Tax Income? High tax burdens are a real expense. Due to banking transparency, all income in Spain is subject to taxation, ranging from approximately 19% to 47% or even higher. Cash transactions are restricted. Financial transparency means single cash transactions cannot exceed €1,000, or they are considered illegal. All Spanish banks are connected to the tax authorities. Whether it\u0026rsquo;s a transfer between individuals or a payment from a company to an individual, if the amount is large or the frequency is unusual, the bank is obligated to ask the recipient for the reason for the transaction and relevant tax payment proof. If a reasonable and legal justification cannot be provided, the account is highly likely to be frozen. II. Madrid vs. Beijing: Per Capita Post-Tax Income Comparison 🇪🇸 Madrid Post-Tax Monthly Salary (2024, Instarem data): Approx. €2,174 Annual Income: €2,174 × 12 = €26,088 Equivalent in RMB: Approx. ¥203,486 (at 1€ ≈ 7.8 RMB) ⚠ Note: This is the average post-tax salary for \u0026lsquo;full-time salaried workers\u0026rsquo; and is not equivalent to \u0026lsquo;per capita disposable income\u0026rsquo; (which also includes income from property, transfer payments, etc.). Due to a lack of official statistics, we use post-tax salary as a basis for estimation here.\n🇨🇳 Beijing Per Capita Disposable Income of All Residents (2024): ¥85,415 Per Capita Disposable Income of Urban Residents: ¥92,464 ✅ This data comes from the National Bureau of Statistics of China and is already a \u0026lsquo;post-tax\u0026rsquo; figure, covering all residents (regardless of profession).\n📊 Preliminary Conclusion In terms of post-tax income: Madrid\u0026rsquo;s is approximately 2.2 times that of Beijing. But this is just an average. For a true comparison, we need to look at it by profession. III. High-Tech Talent Comparison: Beijing Has the Edge Although Spain\u0026rsquo;s average salary seems higher, once we break it down by specific industries, especially for high-tech talent, Beijing\u0026rsquo;s competitiveness immediately becomes apparent.\n👩‍🏫 1. University Lecturer Region Gross Annual Salary Post-Tax Estimate Equivalent in RMB Madrid €35,000–45,000 €28,000–36,000 ¥218,400–281,000 Beijing ¥200,000–350,000 Already post-tax ¥200,000–350,000 ✅ Summary: Incomes at top Beijing universities already surpass Madrid\u0026rsquo;s, and the average level is roughly on par.\n⚖ 2. Law Firm Partner Region Gross Annual Salary Post-Tax Estimate Equivalent in RMB Madrid €80,000–150,000+ €60,000–90,000 ¥470k–700k Beijing ¥500k–3M+ Varies ¥500k and up ✅ Summary: The income gap in mid-to-large law firms is huge. Beijing has a high ceiling, while Madrid is more stable but harder to break through.\n🏥 3. Attending Physician (Public Hospital) Region Gross Annual Salary Post-Tax Estimate Equivalent in RMB Madrid €50,000–70,000 €35,000–49,000 ¥273,000–383,000 Beijing ¥250,000–400,000 Already post-tax ¥250,000–400,000 ✅ Summary: Incomes are similar in both cities. Beijing doctors\u0026rsquo; actual income is likely higher due to project commissions and position allowances.\n💻 4. Senior Software Engineer Region Gross Annual Salary Post-Tax Estimate Equivalent in RMB Madrid €45,000–65,000 €31,500–45,500 ¥245,700–354,900 Beijing ¥300,000–600,000 Already post-tax ¥300,000–600,000 ✅ Summary: In the internet industry, Beijing is far ahead. Tech positions in Spain tend to have a \u0026lsquo;salary cap\u0026rsquo;.\n📌 Summary In high-tech fields like education, healthcare, IT, and law, Beijing\u0026rsquo;s post-tax income is basically on par with or even higher than Madrid\u0026rsquo;s. Especially in the internet industry, Beijing\u0026rsquo;s income offers greater growth potential and flexibility.\nIV. Blue-Collar Group Comparison: More Dignified in Madrid, More Frugal in Beijing 👷 Construction Worker Madrid Post-Tax Annual Salary: €15,000–20,000 ≈ ¥117,000–156,000 Beijing Post-Tax Annual Salary: ¥60,000–96,000 🔌 Plumber/Electrician Madrid Post-Tax Annual Salary: €18,000–25,000 ≈ ¥141,000–196,000 Beijing Post-Tax Annual Salary: ¥72,000–108,000 🛵 Delivery Driver Madrid Post-Tax Annual Salary: €12,000–18,000 ≈ ¥93,000–140,000 Beijing Post-Tax Annual Salary: ¥72,000–120,000 🛍 Salesperson / Cashier Madrid Post-Tax Annual Salary: €11,000–16,000 ≈ ¥86,000–125,000 Beijing Post-Tax Annual Salary: ¥48,000–84,000 ✅ Summary: For blue-collar jobs, Madrid\u0026rsquo;s income is generally higher. Spain has a strong labor protection system, a high minimum wage, and compliant employment practices, making it more \u0026lsquo;dignified\u0026rsquo; overall.\nV. Differences in Cost of Living and Convenience 💸 Where is Madrid\u0026rsquo;s Cost of Living High? The previous article, 《The Downsides of Living in Spain: A Detailed 2024 Comparison of Madrid vs. Beijing》, has already analyzed all aspects of the cost of living in both cities, with a particular focus on a fair comparison of basic necessities and standardized goods. But to truly experience the \u0026lsquo;pain points\u0026rsquo; of consumption in Madrid, let\u0026rsquo;s look at the minor details where prices are severely imbalanced. These might better reflect your true feelings about quality of life:\nArcade \u0026lsquo;Extravagance\u0026rsquo;: In Madrid, arcade coin slots devour shiny 1 Euro coins, which directly translate into gameplay. Imagine, in Beijing, you only need to pay 1 RMB for a game token, with discounts for bulk purchases. This \u0026lsquo;currency unit swap,\u0026rsquo; where the number looks the same but the value is worlds apart, instantly inflates the cost of simple entertainment by nearly 8 times. It\u0026rsquo;s fun, but it might hurt your wallet.\n\u0026lsquo;Astronomical\u0026rsquo; Prices for Stationery and Toys: What\u0026rsquo;s most astonishing is the price gap for stationery and toys. In Madrid, you\u0026rsquo;ll often see a scenario where the number on the price tag is the same as in Beijing, but the currency unit has quietly changed from \u0026lsquo;RMB\u0026rsquo; to \u0026lsquo;Euro.\u0026rsquo; An ordinary toy that sells for 10 RMB in Beijing becomes €10 in Madrid, which is a staggering 78 RMB! This shocking price difference of over 8 times turns what would be an ordinary daily purchase into a heavy burden.\n🧾 Bureaucracy and Convenience 🛠 Slow Bureaucracy: Spanish administrative efficiency is relatively low. 🍱 Fewer and Slower Food Deliveries: Fewer platform choices, high delivery fees. 🛠 Expensive In-Home Services: Difficult to book workers, high costs. ✅ Beijing\u0026rsquo;s \u0026lsquo;Happiness\u0026rsquo; Advantages Fast bureaucracy, comprehensive apps. Convenient food delivery, express shipping, and lifestyle services. Wide variety of consumer goods with high cost-performance. ✅ Conclusion: Do You Want \u0026lsquo;Dignity\u0026rsquo; or \u0026lsquo;Ambition\u0026rsquo;? Dimension Madrid Beijing High-Paying Industries Stable, with a clear ceiling Competitive, but with greater room for advancement Blue-Collar Work Higher income, good social security Lower income, but costs are manageable Pace of Life Slow-paced, gentle social life Fast-paced, resource-intensive Bureaucratic Efficiency Slow, mostly offline Efficient, fully online Consumer Services Expensive labor, fewer lifestyle product categories, fewer entertainment options Low cost, many choices ✊ Final Words: Where to settle down? This is not just a choice of geographical coordinates, but a deep consideration of personal values, life stage, and even financial strength. Here, I will set aside subjective impressions and use a series of real, reliable data to present an unfiltered view of Spain, helping you to understand the true fabric of this nation.\n","permalink":"https://www.houdao.org/en/spanish-local-income-analysis-madrid-vs-beijing-who-can-live-a-more-decent-life/","summary":"\u003cp\u003eMy previous article, [《The Downsides of Living in Spain: A Detailed 2024 Comparison of Madrid vs. Beijing》], sparked considerable debate despite objectively presenting Spain\u0026rsquo;s cost of living with reliable data. One commenter asked, \u0026ldquo;Why not compare the income of Spanish locals? For them, these prices are nothing.\u0026rdquo;\u003c/p\u003e\n\u003cp\u003eAlright, let\u0026rsquo;s complete the picture today: \u003cstrong\u003eWhat are the income levels in Madrid and Beijing really like? We\u0026rsquo;ll cover high-income earners, blue-collar workers, and post-tax disposable income all in one go.\u003c/strong\u003e\u003c/p\u003e","title":"Spanish Local Income Analysis (Madrid vs. Beijing: Who Can Live a More Decent Life?)"},{"content":"1. Submission Time Requirements Item Description Earliest Submission Time 60 days before NIE expiration Latest Submission Time Within 90 days after NIE expiration Financial Requirements Explained The non-lucrative visa renewal is for a 2-year period. One year requires 4 times the IPREM, so two years require 8 times. For each additional family member, add 1 time the IPREM for one year, and 2 times for two years. For example, using the official 2025 figures:\nIPREM = €7,200 / year\n👉 Funds required for a family of three:\n7,200 × 12 = €86,400\n2. Important Notes (Must Read) It is recommended to use a collective residence certificate (Empadronamiento colectivo). How to apply for a \u0026ldquo;Collective Residence Certificate\u0026rdquo; online The insurance certificate must cover the entire residency period. Health insurance must not be interrupted during the residency period. All documents are recommended to be issued within the last 3 months. Similar documents can be merged into a single PDF. The size of a single file is recommended to be no more than 6MB. It is recommended that adults submit their applications separately using their own digital certificates; otherwise, an authorization letter must be submitted. 3. Fee Payment (Tasa 790-052) Payment link:\nhttps://sede.administracionespublicas.gob.es/pagina/index/directorio/tasa052\nIt is recommended to choose online payment:\nAcceder a pagar y enviar la liquidación de la tasa 052 a través de Internet\n⚠️ After payment, be sure to save the payment receipt PDF, as it must be uploaded later.\n4. Submission Platform (Mercurio) Portal link:\nhttps://sede.administracionespublicas.gob.es/pagina/index/directorio/mercurio2\n5. Core Rules (Please Remember) One application per person: a family of three = 3 EX01 applications. Minors must have their application submitted by a legal guardian. An adult spouse can submit on behalf of the other, but it is recommended to provide an authorization letter. 6. Standard Online Submission Process Step Action 1 Individual access (CONTINUAR INDIVIDUAL) 2 Select digital certificate (It is recommended that spouses submit separately; an authorization letter is required for submission by proxy). 3 Select \u0026ldquo;Continuar presentación\u0026rdquo;, then search and select \u0026ldquo;existente\u0026rdquo;. 4 Select \u0026ldquo;Presentar renovación / Obtener resguardo renovación\u0026rdquo; or \u0026ldquo;Presentar nueva solicitud\u0026rdquo;. The former requires filling out less information. Then select your province. 5 Fill out the form. 6 Choose to submit electronically. 7 Upload documents. 8 Sign using AutoFirma. 9 Successfully generate an expediente (case file number). 📌 If there are errors in the documents, you can submit additional documents after obtaining the expediente via Aportar documentos a expedientes.\n7. Main Applicant\u0026rsquo;s Documents (Adult) Document Description File Naming Example Category Selection Passport Full scan of every page (including blank pages) Pasaporte_SOLICITANTE.pdf TODOS LOS SUPUESTOS - Copia completa del pasaporte, título de viaje o cédula de inscripción completo Bank Balance Certificate Certificate issued by the bank showing the account holder and balance Certificado_Bancario_Saldo_SOLICITANTE.pdf TODOS LOS SUPUESTOS - Documentación que acredite disponibilidad de recursos económicos. Six-Month Bank Statement Statements for the last 6 months Movimiento_Cuenta_Bancaria_SOLICITANTE.pdf Otros documentos que desee aportar：Extracto bancario adicional para acreditar medios económicos Average Balance (if available) Average balance for the last 6 months Certificado_Saldo_Medio_6_Meses_SOLICITANTE.pdf Otros documentos que desee aportar：Extracto bancario adicional para acreditar medios económicos NIE Card Scan of front and back NIE_SOLICITANTE.pdf TODOS LOS SUPUESTOS - Otra documentación. Health Insurance Previous insurance covering the residency period + new annual insurance Seguro_Medico_SOLICITANTE.pdf AUTORIZACIÓN DE RESIDENCIA INDEPENDIENTE - Seguro publico o privado de enfermedad. Residence Certificate (Empadronamiento) Collective residence certificate issued within the last 3 months Certificado_Empadronamiento_Colectivo.pdf Otros documentos que desee aportar：EMPADRONAMIENTO COLECTIVO QUE ACREDITA EL DOMICILIO HABITUAL Y LA CONVIVENCIA FAMILIA Property / Rental Nota Simple or rental contract Nota_Simple_Vivienda.pdf / Contrato_Alquiler_Vivienda.pdf Otros documentos que desee aportar：DOCUMENTO ACREDITATIVO DE LA PROPIEDAD DE LA VIVIENDA HABITUAL EN ESPAÑA Tasa 790-052 Payment receipt Tasa_790_052_SOLICITANTE.pdf Otros documentos que desee aportar：BUSQUEDA DE EMPLEO TASA MOD 790 052 Property Tax (IBI) (if applicable) Proof of property tax payment IBI_Vivienda.pdf Otros documentos que desee aportar：JUSTIFICANTE DEL PAGO DEL IMPUESTO DE LA VIVIENDA EN ESPAÑA 8. Dependent Applicant (Spouse, Adult) The documents are mostly the same as the main applicant\u0026rsquo;s. Duplicates do not need to be re-uploaded. Pay special attention to the following:\nDocument Description Filename Category Marriage Certificate Double certified / Apostilled Certificado_de_Matrimonio_APOSTILLADO.pdf TODOS LOS SUPUESTOS - Acreditación del vínculo familiar Authorization Letter (Recommended) Authorizes the main applicant to submit on their behalf Autorizacion_Representacion_CONYUGE.pdf Otros documentos que desee aportar：Documentación que acredite la representación voluntaria 📌 Note: The system allows submission using a spouse\u0026rsquo;s digital certificate, but in practice, it is recommended to include an authorization letter to significantly reduce the chance of being asked to provide additional documents.\n9. Minor (Child) Key Points for Filling Out the Form Check: “Sí hijas/os a cargo en edad de escolarización” Fill in: REPRESENTANTE LEGAL (Father / Mother + NIE) Document Checklist for Minors The documents are mostly the same as the main applicant\u0026rsquo;s. Duplicates do not need to be re-uploaded. If only one parent is applying with the child, a travel consent letter from the other parent is required. Pay special attention to the following:\nDocument Description Filename Category Birth Certificate Double certified / Apostilled Certificado_de_Nacimiento_MENOR_APOSTILLADO.pdf TODOS LOS SUPUESTOS - Acreditación del vínculo familiar School Enrollment Certificate Issued by the school Certificado_Escolaridad_MENOR.pdf Otros documentos que desee aportar：Informe de escolarización de los menores a cargo 10. Note on \u0026ldquo;Custom Categories\u0026rdquo; (Important) When a suitable category cannot be found in the system:\nItem Selection Category Otros documentos que desee aportar Description Custom description in Spanish Applicable for:\nAuthorization Letter Property Tax (IBI) Nota Simple Supplementary bank documents 11. How to Confirm Successful Submission Within 2–3 business days after submission, you should see:\nTipo Asiento：Entrada Tipo：EX01 Número de expediente 12. A Mandatory Step After Submission Register for electronic notifications (otherwise, you will not receive requests for additional documents or the final decision):\nhttps://dehu.redsara.es/\nAuthorization Letter Template AUTORIZACIÓN DE REPRESENTACIÓN D./Dña. [NOMBRE Y APELLIDOS DEL AUTORIZANTE],\ncon NIE [NIE DEL AUTORIZANTE] y pasaporte [NÚMERO DE PASAPORTE],\nautoriza a D./Dña. [NOMBRE Y APELLIDOS DEL REPRESENTANTE],\ncon NIE [NIE DEL REPRESENTANTE],\na presentar y tramitar en mi nombre la renovación de la autorización de residencia temporal no lucrativa (EX01), así como a aportar documentación, recibir notificaciones y realizar cuantas actuaciones sean necesarias ante la Oficina de Extranjería o cualquier otro organismo administrativo competente.\nAsimismo, se adjunta copia del documento de identidad del/de la autorizante a efectos de acreditación.\nLa presente autorización se concede exclusivamente para los fines indicados.\nEn [CIUDAD], a [DÍA] de [MES] de [AÑO].\nFirma del/de la autorizante:\n[NOMBRE DEL AUTORIZANTE]\nFirma del/de la representante:\n[NOMBRE DEL REPRESENTANTE]\n","permalink":"https://www.houdao.org/en/spanish-non-lucrative-visa-renewal-online-ex01-a-complete-guide-for-a-family-of-three-including-a-minor/","summary":"\u003ch2 id=\"1-submission-time-requirements\"\u003e1. Submission Time Requirements\u003c/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n      \u003ctr\u003e\n          \u003cth style=\"text-align: left\"\u003eItem\u003c/th\u003e\n          \u003cth style=\"text-align: left\"\u003eDescription\u003c/th\u003e\n      \u003c/tr\u003e\n  \u003c/thead\u003e\n  \u003ctbody\u003e\n      \u003ctr\u003e\n          \u003ctd style=\"text-align: left\"\u003eEarliest Submission Time\u003c/td\u003e\n          \u003ctd style=\"text-align: left\"\u003e\u003cstrong\u003e60 days\u003c/strong\u003e before NIE expiration\u003c/td\u003e\n      \u003c/tr\u003e\n      \u003ctr\u003e\n          \u003ctd style=\"text-align: left\"\u003eLatest Submission Time\u003c/td\u003e\n          \u003ctd style=\"text-align: left\"\u003eWithin \u003cstrong\u003e90 days\u003c/strong\u003e after NIE expiration\u003c/td\u003e\n      \u003c/tr\u003e\n  \u003c/tbody\u003e\n\u003c/table\u003e\n\u003ch3 id=\"financial-requirements-explained\"\u003eFinancial Requirements Explained\u003c/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe non-lucrative visa renewal is for a \u003cstrong\u003e2-year period\u003c/strong\u003e.\u003c/li\u003e\n\u003cli\u003eOne year requires \u003cstrong\u003e4 times the IPREM\u003c/strong\u003e, so two years require \u003cstrong\u003e8 times\u003c/strong\u003e.\u003c/li\u003e\n\u003cli\u003eFor each additional family member, add \u003cstrong\u003e1 time the IPREM\u003c/strong\u003e for one year, and \u003cstrong\u003e2 times\u003c/strong\u003e for two years.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003eFor example, using the official 2025 figures:\u003cbr\u003e\n\u003cstrong\u003eIPREM = €7,200 / year\u003c/strong\u003e\u003c/p\u003e","title":"Spanish Non-Lucrative Visa Renewal Online (EX01): A Complete Guide for a Family of Three (Including a Minor)"},{"content":"We often say, \u0026ldquo;Large Language Models are very smart.\u0026rdquo;\nThey can write articles, answer questions, code, and even perform some logical reasoning.\nBut in reality, the principle behind them isn\u0026rsquo;t mysterious:\n👉 It just turns a piece of text into a string of numbers, 👉 and then \u0026ldquo;calculates the distance\u0026rdquo; in a high-dimensional space. This might sound a bit abstract, but with a small example, you\u0026rsquo;ll understand it right away. 👇\n1. Language Can Also Become \u0026ldquo;Coordinates\u0026rdquo; For example, take this sentence:\nHow did Cao Cao die?\nThe model doesn\u0026rsquo;t \u0026ldquo;understand\u0026rdquo; this sentence like a human. Instead, it first converts it into a fixed-length vector, for example, a 1536-dimensional coordinate:\n[ 0.01234, -0.01891, 0.00023, …, 0.07112 ] 👉 No matter how long your original input sentence is, it\u0026rsquo;s converted into 1536 numbers.\nThis means every sentence has an \u0026ldquo;address\u0026rdquo; in the semantic space.\nThis step is called Text Embedding, and it\u0026rsquo;s the first step for modern large language models to understand language.\n2. Using Beijing and Shanghai as an Example 🏙️ Imagine the Earth we live on is a two-dimensional plane.\nEvery city has its corresponding latitude and longitude coordinates.\nLet\u0026rsquo;s assume Beijing\u0026rsquo;s \u0026ldquo;coordinate\u0026rdquo; is (1, 1) and Shanghai\u0026rsquo;s \u0026ldquo;coordinate\u0026rdquo; is (4, 5).\nWe can then use the Euclidean distance formula to calculate the \u0026ldquo;distance\u0026rdquo; between them. 👇\n(4 - 1)^2 + (5 - 1)^2 = 3^2 + 4^2 = 9 + 16 = 25 sqrt(25) = 5 👉 The closer the distance, the more similar the semantics. 👉 The farther the distance, the greater the semantic difference. This is the basic idea of \u0026ldquo;vector distance.\u0026rdquo;\nReal large language models use 1536 dimensions, but the mathematical principle is the same.\nIt\u0026rsquo;s just that the two-dimensional \u0026ldquo;Beijing-Shanghai\u0026rdquo; example is easier to understand intuitively.\n3. RAG: The External \u0026ldquo;Knowledge Base\u0026rdquo; 🧠📚 Many people mistakenly believe:\nLarge Model = Knowledge Base\nThat\u0026rsquo;s actually incorrect!\nLarge Language Model: Responsible for understanding language and generating answers. Vector Database: Responsible for storing and retrieving information. For example, if you ask:\nHow did Cao Cao die?\nThe AI\u0026rsquo;s workflow is actually:\nVectorize your question. Find the content with the closest \u0026ldquo;semantic distance\u0026rdquo; to this question in the vector database (e.g., \u0026ldquo;Cao Cao died of illness in Luoyang\u0026rdquo;). Pass this information + your question to the large model. The large model generates a natural language answer. This technique is called RAG (Retrieval-Augmented Generation). Its advantage is 👉 you can make the AI \u0026ldquo;aware\u0026rdquo; of your local knowledge without retraining the model.\nFor example, corporate knowledge bases, professional documents, and historical archives can all be integrated this way.\n4. Transformer: The Model\u0026rsquo;s \u0026ldquo;Thinking\u0026rdquo; Layer 🧮 After receiving input, the inner workings of a large language model aren\u0026rsquo;t \u0026ldquo;magic.\u0026rdquo; They consist of layer after layer of Transformer structures (usually 20 or more).\nEach layer refines and abstracts semantics, much like the human brain continuously \u0026ldquo;processes\u0026rdquo; information.\nUltimately, the model finds the \u0026ldquo;knowledge point\u0026rdquo; in the 1536-dimensional semantic space that is closest to your question and then converts it into a natural language output.\n5. Why 1536 Dimensions? 🤔 A two-dimensional space can represent the geographical locations of Beijing and Shanghai;\nbut language is far more complex than geographical information.\nA single piece of text can simultaneously contain:\nTime Place Subject Emotion Grammatical structure Implied relationships Two dimensions are simply not enough, so the model opts for a high-dimensional space, like 1536 dimensions.\nThis allows for a more precise depiction of semantic differences.\nCloser distance → More similar semantics Farther distance → Greater difference in meaning This is the essence of \u0026ldquo;Semantic Embedding\u0026rdquo;.\n6. Summary 📝 🧭 The model first converts text into vectors. 📏 Semantic similarity = close vector distance. 📚 Vector databases are responsible for fast retrieval. 🧠 RAG technology gives the model an \u0026ldquo;external knowledge base\u0026rdquo;. 🧮 Transformers are responsible for semantic understanding and generation. 📌 So, when you\u0026rsquo;re chatting with an AI, it\u0026rsquo;s finding the \u0026ldquo;closest point\u0026rdquo; to your question in a 1536-dimensional space and then expressing it in natural language.\n","permalink":"https://www.houdao.org/en/the-distance-from-beijing-to-shanghai-understanding-llm-text-embeddings-and-rag-with-vector-databases/","summary":"\u003cp\u003eWe often say, \u0026ldquo;Large Language Models are very smart.\u0026rdquo;\u003c/p\u003e\n\u003cp\u003eThey can write articles, answer questions, code, and even perform some logical reasoning.\u003c/p\u003e\n\u003cp\u003eBut in reality, the principle behind them isn\u0026rsquo;t mysterious:\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003e👉 It just turns a piece of text into a string of numbers,\u003c/li\u003e\n\u003cli\u003e👉 and then \u0026ldquo;calculates the distance\u0026rdquo; in a high-dimensional space.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003eThis might sound a bit abstract, but with a small example, you\u0026rsquo;ll understand it right away. 👇\u003c/p\u003e","title":"The Distance from Beijing to Shanghai: Understanding LLM Text Embeddings and RAG with Vector Databases"},{"content":"Spain has long been regarded as a country with a high quality of life in Europe, attracting a large number of immigrants and international students. However, when we make a direct comparison with China, especially its capital Beijing, we find that Spain has significant shortcomings in many core aspects of life. Based on the latest data from 2024, this article provides a systematic comparison between Madrid and Beijing across dimensions such as consumer costs, education, healthcare, transportation, housing, home appliances, cars, and public safety, deeply revealing the various inconveniences and cost pressures of life in Spain.\n1. Coca-Cola (500ml) Price Comparison Madrid: €1.50 ≈ ¥12.3 Beijing: ¥3 A bottle of Coke in a Madrid supermarket is nearly four times the price in Beijing.\n2. McDonald\u0026rsquo;s Big Mac Price Comparison Madrid: €5.65 ≈ ¥43 Beijing: ¥25.5 Fast food prices in Spain are significantly higher than in China.\n3. 95-Octane Gasoline Price Comparison Madrid: €1.57/L ≈ ¥12/L Beijing: ¥7.9/L Gasoline prices in Spain are over 50% higher than in Beijing.\n4. Water Fee Comparison Madrid: €1.0–2.63/m³ (¥7.6–20) Beijing: ¥7.9/m³ (first tier) For higher water consumption, water fees in Spain are noticeably higher than in Beijing.\n5. Electricity Fee Comparison Madrid: €0.14/kWh ≈ ¥1.2 Beijing: ¥0.49 (first tier) Spain\u0026rsquo;s electricity prices are about 2 to 3 times higher than Beijing\u0026rsquo;s.\n6. Natural Gas Price Comparison Madrid: €0.091/kWh ≈ ¥0.7 Beijing: ¥0.26/kWh The cost of natural gas for residents in Madrid is nearly 3 times that of China.\n7. Education Comparison (Public Schools) Daily Class Periods: Madrid approx. 4, Beijing 6-8 School Hours: Madrid 9:00–14:00, Beijing 8:00–16:00 Teacher Absenteeism Rate: As high as 20% in Spain, extremely low in Beijing Vacation Length: Spain has about one more month of vacation per year IB Scores: Madrid average approx. 33, Beijing approx. 36 In terms of educational quality, academic intensity, and stability, Beijing has a clear advantage.\n8. Hotel Price Comparison (Same Category) Four-Star: Madrid ¥2,172, Beijing ¥569 Three-Star: Madrid ¥1,960, Beijing ¥424 Hotel prices in Spain are three to four times higher than in Beijing.\n9. Air Conditioner Installation Fee Comparison Madrid: Approx. €300 ≈ ¥2,500 Beijing: ¥80–200, sometimes free with promotions Installation fees in Spain are 10 to 20 times higher than in Beijing.\n10. Air Conditioner Unit Price Comparison Madrid: Approx. €900 ≈ ¥6,800 (including installation) Beijing: ¥2,500–3,200 (including installation) The same brand and model of air conditioner costs about twice as much in Spain as in China.\n11. High-Speed Rail Maximum Speed Comparison Spain: Approx. 200 km/h China: Approx. 300 km/h China\u0026rsquo;s high-speed rail technology and operating speeds are world-leading.\n12. High-Speed Rail Ticket Price Comparison (per km) Madrid: €0.15–0.30 ≈ ¥1.2–2.4 Beijing: ¥0.46–0.48 High-speed rail tickets in Spain are 2 to 4 times more expensive than in China.\n13. Public Hospital Efficiency Comparison Madrid: Average wait for a specialist is 95 days, for surgery 115 days Beijing: A regular appointment can be scheduled within 1–7 days The medical process in Spain is cumbersome with extremely long waiting times.\n14. Volkswagen Golf 1.4L Economy Car Price Madrid: €31,638 ≈ ¥243,000 Beijing: ¥152,263 The price in Spain is about 60% higher.\n15. Two-Bedroom City Center Rent Comparison Madrid: €1,200–2,000 ≈ ¥9,200–15,300/month Beijing: ¥4,000–8,000/month Urban housing rental costs in Spain are significantly higher than in Beijing.\n16. Safety Index Comparison (Numbeo data) Concern about Property Crime Index: Madrid 34.9, Beijing 28.6 Concern about Violent Crime Index: Madrid 22.5, Beijing 19.6 Beijing is generally safer and provides a stronger sense of security.\n17. Subway and Bus Fare Comparison Madrid: Single trip €1.5–2.0 (¥11–15), monthly pass approx. ¥166 Beijing: Subway starts at ¥3, bus starts at ¥2, with discounts available Beijing\u0026rsquo;s public transport system is efficient and inexpensive.\n18. Kitchen Drain Unclogging Fee Comparison Madrid: Regular service €150–500 (¥1,200–4,000), emergency service can go up to €1,350 (¥10,800) Beijing: Regular service ¥80–200, emergency service generally not exceeding ¥300 Home service prices in Spain are exorbitant, far exceeding those in China.\n19. Mobile Network Quality and Cost Comparison Network Coverage and Signal Strength: According to data from institutions like Speedtest Intelligence and OpenSignal, Beijing outperforms Madrid in both the prevalence and stability of 5G and 4G networks. Beijing\u0026rsquo;s 5G coverage exceeds 95%, whereas Madrid still has signal dead zones in some urban areas and even indoors. Price for a 30GB Data Plan: Madrid: The average monthly fee is around €25–30 (¥200–240), with legacy carriers like Movistar and Vodafone being even more expensive. Beijing: The average monthly price for a 30GB data + calls plan from China Mobile/Unicom/Telecom is around ¥60–80. Mobile communication costs in Spain are about 3 times higher than in China, and network coverage and signal stability are also comparatively worse.\nConclusion From the comparison of the 18 specific life metrics above, it is clear that Spain (especially Madrid) lags behind Beijing in almost every aspect, including consumer costs, public service efficiency, educational quality, transportation convenience, and daily maintenance services. Although Spain boasts a beautiful natural environment and a slower pace of life, its high cost of living and inefficient allocation of public resources cannot be ignored.\nIt is particularly noteworthy that in higher education admissions, universities in Europe and America, including Spain, widely practice a \u0026ldquo;diversity admissions\u0026rdquo; system. Admission criteria are not solely based on grades but also heavily consider the applicant\u0026rsquo;s race and ethnicity. East Asians (of Chinese descent), due to their generally excellent exam scores, are paradoxically classified as a \u0026ldquo;non-disadvantaged group\u0026rdquo; and are placed under stricter scrutiny in the competition.\nData shows:\nThe average IB score for many international schools in Beijing is between 35–38. Most schools in Madrid only average around 31–34. Although students of Chinese descent achieve excellent results, in internationally standardized tests like the IB and A-Levels, which have a global unified exam and grading system, the admission standards are identical for everyone. In this context, applying to university from China is more advantageous than applying locally from Spain, because Chinese students as a whole have higher scores and are more competitive. It must be specified that even students of Chinese descent who have obtained Spanish citizenship are still considered \u0026ldquo;East Asian\u0026rdquo; in the diversity admissions system. Therefore, they are held to the same standard as applicants from China, with scores ultimately being the key deciding factor.\nIn summary, Chinese families planning to immigrate, study, or make long-term investments in Spain need to conduct a comprehensive and rational assessment of its high living costs, slow-paced administrative system, and the underlying inequalities in its education and employment policies.\nAppendix: Madrid vs. Beijing Key Life Metrics Comparison Table (2024) Comparison Item Madrid Beijing Coca-Cola (500ml) €1.50 ≈ ¥12.3 ¥3 Big Mac €5.65 ≈ ¥43 ¥25.5 95-Octane Gasoline (per liter) €1.57 ≈ ¥12 ¥7.9 Water Fee (per m³) €1.0–2.63 (¥7.6–20) ¥7.9 Electricity Fee (per kWh) €0.14 ≈ ¥1.2 ¥0.49 Natural Gas (per kWh) €0.091 ≈ ¥0.7 ¥0.26 Teacher Absenteeism Rate Up to 20% Extremely low Average IB Score Approx. 33 Approx. 36 Four-Star Hotel ¥2,172 ¥569 AC Installation Fee ¥2,500 ¥80–200 (often free) Total AC Unit Price ¥6,800 ¥2,500–3,200 High-Speed Rail Speed 200 km/h Approx. 300 km/h High-Speed Rail Fare (per km) ¥1.2–2.4 ¥0.46–0.48 Hospital Wait for Specialist Average 95 days Usually 1–7 days Volkswagen Golf 1.4L Price ¥243,000 ¥152,263 2-BR Rent (City Center) ¥9,200–15,300 ¥4,000–8,000 Single Subway Fare ¥11–15 ¥3 Kitchen Drain Unclogging ¥1,200–4,000 (Emergency ¥10,800) ¥80–200 (Emergency under ¥300) 30GB Mobile Plan ¥200–240 ¥60–80 5G Signal Coverage Weak/spotty in some areas Nearly full city coverage ","permalink":"https://www.houdao.org/en/the-downsides-of-living-in-spain-a-detailed-2024-comparison-of-madrid-vs-beijing/","summary":"\u003cp\u003eSpain has long been regarded as a country with a high quality of life in Europe, attracting a large number of immigrants and international students. However, when we make a direct comparison with China, especially its capital Beijing, we find that Spain has significant shortcomings in many core aspects of life. Based on the latest data from 2024, this article provides a systematic comparison between Madrid and Beijing across dimensions such as consumer costs, education, healthcare, transportation, housing, home appliances, cars, and public safety, deeply revealing the various inconveniences and cost pressures of life in Spain.\u003c/p\u003e","title":"The Downsides of Living in Spain: A Detailed 2024 Comparison of Madrid vs. Beijing"},{"content":"1. Mythical Beginnings: Yan, Huang, and Chiyou As recorded in the Records of the Grand Historian and Discourses of the States:\nThe Yellow Emperor (Huangdi) defeated the Yan Emperor (Yandi) at the Battle of Banquan, causing the Yan tribe to submit to his rule. He then defeated Chiyou at the Battle of Zhuolu, achieving ultimate victory. These are not merely legends but symbols of the integration of ancient tribes:\nThe Yellow Emperor\u0026rsquo;s group: An agricultural tribe from the Central Plains, with the surname Ji. The Yan Emperor\u0026rsquo;s group: A tribe with the surname Jiang, related to the ancient Qiang people. Chiyou\u0026rsquo;s group: The Jiuli (Nine Li) tribes, ancestors of the Miao-Man peoples of the south. Ultimately, the people of the Yan Emperor and Chiyou were incorporated into the Yellow Emperor\u0026rsquo;s tribe, forming the \u0026ldquo;Huaxia.\u0026rdquo;\n👉 From the very beginning, the Chinese nation has been a civilizational community that was pluralistic in its existence but ultimately tended toward unity.\n2. The Origin of \u0026ldquo;Hua\u0026rdquo;: Flower and Mount Hua In ancient Chinese, \u0026ldquo;华\u0026rdquo; (Huà) and \u0026ldquo;花\u0026rdquo; (huā, flower) were phonetically similar. The flower, symbolizing prosperity, was likely a totem of an early tribe.\nMount Hua, revered as the Western Sacred Mountain, is the sacred mountain of the \u0026ldquo;Hua people.\u0026rdquo;\nBy the Spring and Autumn period, the Book of Documents · Completion of the War already stated:\nThe Huaxia and the wild tribes of Man and Mo, none failed to follow and submit.\nThe Zuo Zhuan · 10th Year of Duke Ding says:\nThe border tribes do not plot against Xia; the Yi barbarians do not disrupt Hua.\nThis indicates that \u0026ldquo;Huaxia\u0026rdquo; had already become the self-identity of the Central Plains civilization.\n👉 The tribal alliance of mythology eventually transformed into a civilizational concept in written records.\n3. Evidence of the Xia: Yangshao, Longshan, Erlitou, and Liangzhu The Xia Dynasty was long considered a \u0026ldquo;legendary dynasty.\u0026rdquo;\nHowever, archaeological discoveries have gradually clarified history:\nYangshao Culture (c. 5000–3000 BCE, middle Yellow River): Best known for its painted pottery, it was primarily agricultural and formed the basis of the early Huaxia groups in the Central Plains. Longshan Culture (c. 3000–1900 BCE, lower Yellow River): The emergence of black pottery and city sites indicates increased social stratification and the initial form of a state, a key stage leading to the Xia. Erlitou Culture (c. 1900–1500 BCE, Yanshi, Henan): With its palaces, roads, and bronze ritual vessels, it shows centralized power and is widely believed to be associated with the Xia Dynasty, marking the entry of Huaxia into the \u0026ldquo;Age of States.\u0026rdquo; Meanwhile, the Yangtze River basin developed in parallel:\nLiangzhu Culture (c. 3300–2300 BCE, Zhejiang): Famous for its jade civilization, jade being a unique symbol of Chinese civilization. Its ritual system and social hierarchy were highly developed, earning it the title \u0026ldquo;proof of China\u0026rsquo;s five-thousand-year civilization.\u0026rdquo; Ancient DNA studies show that the paternal lineage of the Liangzhu people was also dominated by the O haplogroup (mostly O1, O2), closely related to the O-M122 of the Central Plains Han. This suggests that the Liangzhu people were genetically related to the people of the Central Plains, but they followed a southern path of civilization. 👉 Conclusion: The Yangshao-Longshan-Erlitou sequence represents the direct lineage of the Xia Dynasty, while Liangzhu represents the peak of southern civilization. These northern and southern developments ran in parallel and eventually converged, forming the pluralistic yet unified structure of Huaxia civilization.\n4. Ancient DNA and the Paternal Lineage of East Asia Ancient DNA studies show:\nThe populations of Yangshao, Longshan, and Erlitou share genetic continuity with modern Han, Tibetan, and Qiang peoples. Components of the Liangzhu culture\u0026rsquo;s population are still present in southern Han Chinese and Miao-Yi ethnic groups. Over 70% of modern Han Chinese males belong to the O haplogroup (especially O-M122), which is the core paternal marker of the Han people.\nPaternal Haplogroup Comparison of Major East Asian Ethnic Groups Han Chinese: 70–80% O haplogroup, the most concentrated. Tibetans: 50–60% O haplogroup, with another 35–45% D-M174 (a remnant of an ancient East Asian indigenous paternal lineage). Qiang: Primarily O haplogroup, continuing ancient Qiang characteristics. Mongols: Primarily C-M217 (50–60%), a typical marker of nomadic peoples. Manchus: Historically similar to Mongols, with C haplogroup being dominant. After entering the Central Plains and long-term intermarriage with the Han, the O haplogroup is now predominant. Japanese: 40–50% O haplogroup, 30–40% D-M174, with a small amount of C. Koreans: 60–70% O haplogroup, with small amounts of C and N. European Comparison: R haplogroup approx. 60–70% (Western Europe dominated by R1b, Eastern Europe by R1a), plus I haplogroup (10–20%), and smaller proportions of E/J/G haplogroups. 👉 Conclusion: The Han O haplogroup is the most stable and concentrated. Tibetans and Japanese retain a significant amount of the ancient D haplogroup. Mongols and Manchus were once dominated by C but eventually integrated into the larger O haplogroup system.\n5. Han, Tibetan, and Qiang: Same Origin, Different Branches The Han, Tibetans, and Qiang all trace their origins to the ancient Qiang people:\nHan: One branch of the ancient Qiang moved into the Yellow River basin, developed agriculture, and merged with the Yangshao-Longshan-Erlitou cultures to form the Han people (70–80% O haplogroup). Tibetans: Another branch of the ancient Qiang moved onto the Tibetan Plateau, engaged in pastoralism, and merged with the Paleolithic indigenous people carrying D-M174 to form the Tibetan people (O ≈50–60%, D ≈35–45%). Qiang: The Qiang people of today\u0026rsquo;s Maoxian County in Sichuan (who call themselves \u0026ldquo;Rma\u0026rdquo;) are direct descendants of the ancient Qiang. 👉 The Han, Tibetans, and Qiang are brotherly peoples from the same origin but different branches. The Han are the largest branch, while the Tibetans and Qiang retain more ancient genes and unique cultures.\n6. Genetic Drift: The High Probability of Minority Genes Disappearing Why has the Han O haplogroup persisted for thousands of years, while the genes of other ethnic groups have gradually dissipated?\nThe answer lies in genetic drift.\nGenetic drift refers to:\nMinority genes, having a very low proportion in a population, are susceptible to random fluctuations and have a high probability of disappearing completely after a few generations. Majority genes are more stable and become more entrenched with each passing generation. This is like gamblers at a casino:\nLarge capital (majority genes) can withstand occasional losses and continue playing. Small capital (minority genes) can be wiped out by a few fluctuations and eliminated from the game. An Example from Human Evolution All humans today can be traced back to a single father, \u0026ldquo;Y-chromosomal Adam,\u0026rdquo; and a single mother, \u0026ldquo;Mitochondrial Eve.\u0026rdquo;\nThey were not the only people alive at the time, but:\nOther bloodlines were gradually absorbed or disappeared through genetic drift. Only their lineages survived to become the common ancestors of modern humans. Meanwhile, \u0026ldquo;cousins\u0026rdquo; of Homo sapiens like the Neanderthals and Denisovans eventually went completely extinct.\n👉 The pattern is clear: in population fusion, minority genes disappear, and majority genes persist.\n7. Case Studies of Historical Peoples Turkic peoples: They once formed a powerful empire in Central Asia and were the ruling class of Turkey. However, the genes of modern Turkish people have almost no connection to East Asia. The Turkic bloodline has dissipated, leaving only the language. Xiongnu: They migrated west to Europe and established the \u0026ldquo;Hunnic Empire,\u0026rdquo; but modern Hungarians have almost no Xiongnu genes. Manchus: When they entered the Central Plains during the Qing Dynasty, their paternal lineage was mostly C haplogroup. After three hundred years of integration, the paternal lineage of today\u0026rsquo;s Manchus is almost identical to that of the Han, primarily O haplogroup. 👉 Historical facts confirm the principle of genetic drift: the genes of minority groups are ultimately absorbed by the majority group.\n8. The \u0026ldquo;Five Barbarians Uprising\u0026rdquo; and the Misconception of Admixture Many people claim that after the Uprising of the Five Barbarians, the Han people were thoroughly admixed.\nBut the facts from genetic testing contradict this:\nThe Han O haplogroup still accounts for 70–80%, making it the most stable genetic structure in East Asia. Other components (C, N, etc.) are present in extremely low proportions, far from enough to alter the main body. Historically, minority ethnic groups were ultimately assimilated by the Han, not the other way around. 👉 The truth is: The Han were not diluted; they were the ones who continuously absorbed others.\nThis is why today\u0026rsquo;s Han people still maintain a high degree of stability in the O haplogroup.\n9. Religious Culture: Rationality and Inclusiveness Han culture, like its genetics, exhibits a pattern of \u0026ldquo;stability + absorption.\u0026rdquo;\nShang Dynasty: Reverence for ghosts and emphasis on sacrifice. Zhou Dynasty: The Duke of Zhou established rites, with ancestor worship at the core. Confucianism: Respect ghosts and spirits but keep them at a distance, focusing on human ethics and ritual governance. Han and Tang Dynasties: Buddhism, Daoism, and Confucianism coexisted. Song, Ming, and Qing Dynasties: Clan ancestral halls became deeply rooted at the grassroots level. Characteristics:\nAncestor Worship → The combination of bloodline and culture. Rationalization → Religion incorporated into the ritual system. Inclusiveness → Foreign religions could be absorbed. Secularism → Easy acceptance of science and practice. 👉 The stability of genes and the rational inclusiveness of culture mirror each other perfectly.\n10. The True Meaning of the Zhonghua Minzu (Chinese Nation) Linguistics: Chinese, Tibetan, Qiang, and Yi languages → all belong to the Sino-Tibetan language family. Genetics: The Han, Tibetan, and Qiang peoples share the O haplogroup from the ancient Qiang, just in different directions. Historical Culture: The Yan Emperor, Yellow Emperor, Chiyou, and Qiang people → all were eventually incorporated into Huaxia civilization. 👉 Zhonghua Minzu = The Han as the main body + a community of multiple ethnic minorities.\n11. Conclusion From mythology to archaeology, from genetics to culture, the Han people exhibit a \u0026ldquo;triple continuity\u0026rdquo;:\nUnbroken Historical Culture — Five thousand years of Huaxia, with an uninterrupted cultural lineage. Stable Genetic Bloodline — The Han O haplogroup as the main trunk, with Tibetans and Qiang from the same origin. Inclusive and Rational Culture — Foreign religions and cultures were all integrated. The cultural and genetic heritage of the Han people possesses a distinct ethnic character.\nHistorical culture and genetic tracing both prove that:\nThe Han people are the main body of the Zhonghua Minzu, and the Zhonghua Minzu is the civilizational community of China\u0026rsquo;s multiple ethnic groups.\nOnly by examining genetics and history can we understand the origins of the Chinese nation.\n","permalink":"https://www.houdao.org/en/the-nature-of-the-han-people-5-000-years-of-huaxia-bloodline-and-chinese-culture/","summary":"\u003ch2 id=\"1-mythical-beginnings-yan-huang-and-chiyou\"\u003e1. Mythical Beginnings: Yan, Huang, and Chiyou\u003c/h2\u003e\n\u003cp\u003eAs recorded in the \u003cem\u003eRecords of the Grand Historian\u003c/em\u003e and \u003cem\u003eDiscourses of the States\u003c/em\u003e:\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe Yellow Emperor (Huangdi) defeated the Yan Emperor (Yandi) at the Battle of Banquan, causing the Yan tribe to submit to his rule.\u003c/li\u003e\n\u003cli\u003eHe then defeated Chiyou at the Battle of Zhuolu, achieving ultimate victory.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003eThese are not merely legends but symbols of the integration of ancient tribes:\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eThe Yellow Emperor\u0026rsquo;s group\u003c/strong\u003e: An agricultural tribe from the Central Plains, with the surname Ji.\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003eThe Yan Emperor\u0026rsquo;s group\u003c/strong\u003e: A tribe with the surname Jiang, related to the ancient Qiang people.\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003eChiyou\u0026rsquo;s group\u003c/strong\u003e: The Jiuli (Nine Li) tribes, ancestors of the Miao-Man peoples of the south.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003eUltimately, the people of the Yan Emperor and Chiyou were incorporated into the Yellow Emperor\u0026rsquo;s tribe, forming the \u0026ldquo;Huaxia.\u0026rdquo;\u003c/p\u003e","title":"The Nature of the Han People: 5,000 Years of Huaxia Bloodline and Chinese Culture"},{"content":"At the dawn of human civilization, two mathematical works emerged in almost the same era. Like two rivers flowing in different directions, they quietly shaped the completely different intellectual traditions of the East and West.\nOne came from China,\nthe other from ancient Greece.\nThey are:\nChina\u0026rsquo;s Nine Chapters on the Mathematical Art Ancient Greece\u0026rsquo;s Elements (from Euclid\u0026rsquo;s work) To this day, our understanding of science, technology, and even artificial intelligence still carries the DNA of these two books.\nI. Historical Context: A Philosopher\u0026rsquo;s Truth vs. an Administrator\u0026rsquo;s Handbook In the history of Western science, the earliest and most influential mathematical work is Euclid\u0026rsquo;s Elements (the source of what is often called \u0026lsquo;Euclidean geometry\u0026rsquo;);\nwhereas in the history of ancient Chinese science, the earliest, most widespread, and most influential mathematical classic is the Nine Chapters on the Mathematical Art, compiled during the Han Dynasty.\nComparing these two \u0026ldquo;most important mathematical classics of their respective civilizations\u0026rdquo; is not about determining a winner, but about understanding a more practical question:\nWhy did ancient mathematics of a similarly high level\nultimately contribute to modern natural science via two completely different paths?\n1️⃣ Euclid\u0026rsquo;s Elements: Mathematics for the Sake of \u0026lsquo;Truth Itself\u0026rsquo; Date of Compilation: Circa 300 BCE Author: Euclid Role: A \u0026lsquo;Logical Ladder\u0026rsquo; to the Laws of the Universe Euclid\u0026rsquo;s Elements is not concerned with harvests, taxes, or engineering costs.\nIt is concerned with a more fundamental question:\nHow should mathematics itself be defined?\nIt establishes a \u0026ldquo;deducible world\u0026rdquo;: starting from the fewest possible premises to deduce as many necessary conclusions as possible.\nThis is why many later Western disciplines adopted it as a \u0026ldquo;model for theoretical writing and scientific argumentation.\u0026rdquo;\nSome have even pointed out that the structure of Newton\u0026rsquo;s Principia Mathematica clearly borrows from the Euclidean system\u0026rsquo;s \u0026ldquo;definition-axiom-proposition-proof\u0026rdquo; style.\n2️⃣ Nine Chapters on the Mathematical Art: Mathematics in Service of the Real World Date of Compilation: Circa 2nd century BCE – 1st century CE (Western Han to Eastern Han Dynasty) Author: Compiled and expanded by mathematicians over generations Role: An \u0026lsquo;Administrative Handbook\u0026rsquo; for a unified empire It solves the most practical problems:\nLand surveying Tax calculation Construction projects (building dikes, granaries, digging canals) This is a book written for officials and engineers.\nIt does not pursue the \u0026ldquo;pure truth of the universe\u0026rdquo;; it pursues:\nSolving problems correctly, quickly, and practically.\nPrecisely because of this strong practicality, the study and application of the Nine Chapters continued in China for a long time, even extending into the Ming and Qing dynasties—it became a \u0026ldquo;standard algorithm library\u0026rdquo; for the ancient system of governance and engineering.\nII. A Difference in Starting Points: Beginning with \u0026lsquo;Definitions\u0026rsquo; vs. Beginning with \u0026lsquo;Problems\u0026rsquo; 📐 Euclid\u0026rsquo;s Elements: Building a Universe from Nothing Euclid\u0026rsquo;s opening does not calculate areas or solve equations.\nInstead, it first defines the world itself.\nOriginal Text:\nDefinition 1: A point is that which has no part. Definition 2: A line is breadthless length. Postulate 1: To draw a straight line from any point to any point. Here, Euclid is not performing calculations; he is engaging in abstract modeling.\nThe entire book is built on an extremely rigorous deductive chain:\nDefinitions → Axioms/Postulates → Propositions → Proofs\nThis is a form of mathematics that starts from the question \u0026lsquo;Why is this necessarily true?\u0026rsquo;\n🌾 Nine Chapters on the Mathematical Art: Wisdom Grown from the Land The opening of the Nine Chapters is extremely \u0026ldquo;down-to-earth.\u0026rdquo;\nAlmost every chapter begins with a single phrase:\n\u0026ldquo;Now given\u0026hellip;\u0026rdquo;\n(Meaning: Now there is a practical problem)\nOriginal Text:\nNow given a field 15 paces wide and 16 paces long. Question: what is the area of the field?\nMethod: Multiply the width and length to get the area in square paces.\nIts structure is very consistent:\nProblem → Answer → Method (Algorithm)\nIt does not explain why \u0026ldquo;length × width = area.\u0026rdquo;\nIt directly gives you a set of reusable algorithms called \u0026ldquo;methods\u0026rdquo; (术)—which, from today\u0026rsquo;s perspective, are almost like pseudocode.\nIII. The Same Mathematics, Different Thought Processes 1️⃣ The Pythagorean Theorem: Proving Necessity vs. Applying Effectiveness Euclid\u0026rsquo;s Elements\nIn Proposition I.47, Euclid uses complex geometric constructions to rigorously prove the logical necessity of the relationship between the three sides of a right-angled triangle. Nine Chapters on the Mathematical Art\nDirectly provides the formula: Multiply the gou and gu (the two shorter sides) by themselves, add them, and take the square root. This is the hypotenuse.\nIt then immediately applies it to practical problems: measuring water depth, tree height, and determining engineering dimensions.\nOne is proving \u0026lsquo;why it is always correct,\u0026rsquo;\nthe other is verifying \u0026lsquo;if it is useful enough.\u0026rsquo;\n2️⃣ Engineering Problem: A \u0026lsquo;Showdown\u0026rsquo; for Calculating Officials In ancient mathematical examinations (like the Mingsuan ke of the Tang Dynasty), there was a highly representative engineering problem:\nOriginal Problem (from the \u0026lsquo;Shang Gong\u0026rsquo; chapter):\nNow given a dike to be built, with a bottom width of 2 zhang, a top width of 8 chi, a height of 4 chi, and a length of 12 zhang and 7 chi.\nQuestion: What is the volume?\nMethod (Algorithm):\nAdd the top and bottom widths, halve the sum, multiply by the height, and then multiply by the length.\nThis is the standard algorithm for the volume of a trapezoidal prism.\nIf Euclid were to solve this:\nHe would require you to prove the formula for the area of a trapezoid and derive it by decomposing the trapezoid into triangles.\nA Chinese examination candidate, however, would simply: move the counting rods and execute the algorithm.\nThis highly algorithmic educational system gave ancient China an extremely powerful capacity for engineering execution—it could turn \u0026ldquo;governance\u0026rdquo; into something \u0026ldquo;calculable\u0026rdquo; and \u0026ldquo;engineering\u0026rdquo; into something \u0026ldquo;operable.\u0026rdquo;\n3️⃣ Positive and Negative Numbers: The Art of Red and Black This is one of Chinese mathematics\u0026rsquo; most important contributions to humanity.\nNine Chapters on the Mathematical Art · \u0026lsquo;Fangcheng\u0026rsquo; (Equations) Chapter\nTo handle the cancellation of coefficients, it introduced positive and negative numbers: Red counting rods represent positive, black counting rods represent negative.\nIt also systematically provided the rules of addition and subtraction for the \u0026ldquo;Method of Positive and Negative.\u0026rdquo;\nIn contrast\nAncient Greek mathematics long held that \u0026ldquo;length cannot be negative\u0026rdquo; and thus considered negative numbers absurd. The attitude of Chinese mathematicians was more like that of an engineer:\nAs long as the algorithm is logically self-consistent, it doesn\u0026rsquo;t need to be intuitively visible.\nIV. If You Only Have Time for a Glance, This Table Is Enough Dimension Nine Chapters (East) Elements (West) Cognitive Preference Algorithmic Thinking: How to calculate Logical Thinking: Why it works Form of Mathematics Discrete, Algebraic, Numerical Calculation Continuous, Geometric, Spatial Modeling Methodology Induction: Generalizing rules from specific cases Deduction: Deriving specific conclusions from axioms Focus Executability and Efficiency Self-consistency and Universality Weaknesses Lacks rigorous logical proofs, relies on empirical summaries Overly detached from practical use, once considered \u0026lsquo;impractical\u0026rsquo; Scientific Contribution Ensured the long-term continuity of engineering and governance techniques The logical foundation for the grand edifice of modern natural science V. The Key Divergence: Why Was the Nine Chapters \u0026lsquo;Long-Lived\u0026rsquo; but Less \u0026lsquo;Foundational\u0026rsquo; Than Elements? The practicality of the Nine Chapters did indeed ensure its study and application in China continued into the Ming and Qing dynasties. Many later mathematicians often deepened and extended their work based on the problems posed in the Nine Chapters.\nBut it also had an unavoidable structural shortcoming:\nIt provided almost no clear mathematical concepts, theorem systems, or systematic proofs.\nIn contrast, Euclid\u0026rsquo;s Elements was the opposite.\nIt might not directly help build a dike, but it provided the \u0026ldquo;scaffolding for the edifice of science\u0026rdquo;:\nHow to define concepts How to establish axioms and postulates How to prove propositions How to build a self-consistent system This structure had a profound impact on later natural sciences—modern science requires not only the ability to \u0026ldquo;calculate\u0026rdquo; but also the ability to \u0026ldquo;build theories.\u0026rdquo;\nSo, the final result is:\nThe Nine Chapters is more like an \u0026ldquo;algorithm library for governance and engineering,\u0026rdquo;\nwhile Elements is more like a \u0026ldquo;building code for scientific theory.\u0026rdquo;\nVI. How Does This Divergence Continue Today? This difference between the \u0026ldquo;algorithmic gene\u0026rdquo; and the \u0026ldquo;logical gene\u0026rdquo; has re-emerged in the 21st century.\nThe West (the Elements gene) excels at going from 0 to 1:\nNeural network theory, large model frameworks, computational paradigm innovation\nIt solves: Why the model is viable The East (the Nine Chapters gene) excels at going from 1 to 100:\nAlgorithm compression, inference acceleration, engineering implementation, cost optimization\nIt solves: How to perfect the model This is not about which is superior, but about different choices of path.\nConclusion The Nine Chapters on the Mathematical Art is the wisdom of the earth, teaching us how to solve problems pragmatically;\nEuclid\u0026rsquo;s Elements is a contemplation under the starry sky, teaching us how to construct a rational world.\nTo this day, we still stand at the intersection of these two traditions.\nTrue breakthroughs often come from:\nUsing logic to verify algorithms,\nand using algorithms to implement logic.\n","permalink":"https://www.houdao.org/en/the-pinnacle-of-algorithms-and-the-source-of-logic-when-the-nine-chapters-on-the-mathematical-art-meets-euclid-s-elements/","summary":"\u003cp\u003eAt the dawn of human civilization, two mathematical works emerged in almost the same era. Like two rivers flowing in different directions, they quietly shaped the \u003cstrong\u003ecompletely different intellectual traditions\u003c/strong\u003e of the East and West.\u003c/p\u003e\n\u003cp\u003eOne came from China,\u003cbr\u003e\nthe other from ancient Greece.\u003c/p\u003e\n\u003cp\u003eThey are:\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003eChina\u0026rsquo;s \u003cstrong\u003e\u003cem\u003eNine Chapters on the Mathematical Art\u003c/em\u003e\u003c/strong\u003e\u003c/li\u003e\n\u003cli\u003eAncient Greece\u0026rsquo;s \u003cstrong\u003e\u003cem\u003eElements\u003c/em\u003e\u003c/strong\u003e (from Euclid\u0026rsquo;s work)\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003eTo this day, our understanding of \u003cstrong\u003escience, technology, and even artificial intelligence\u003c/strong\u003e still carries the DNA of these two books.\u003c/p\u003e","title":"The Pinnacle of Algorithms and the Source of Logic: When the Nine Chapters on the Mathematical Art Meets Euclid's Elements"},{"content":"Many people assume that,\nThe British royal family is British,\nThe French royal family is French,\nAnd the Spanish royal family is, naturally, Spanish.\nBut if you take even a brief look at the history of European royalty, you\u0026rsquo;ll discover a fact that seems absurd, yet is entirely true—\nThe core of the entire European royal system is almost entirely of German origin.\nAnd not just a little bit. We\u0026rsquo;re talking about a systemic presence.\nMany people will ask:\nWhy the Germans?\nThe answer is actually very pragmatic.\nAfter the Fall of Rome, They Were the Only Ones Left Who Could Fight After the fall of the Western Roman Empire, Europe didn\u0026rsquo;t immediately welcome a \u0026ldquo;new civilization.\u0026rdquo; Instead, it entered a long period of chaos:\nThe administrative system collapsed The tax system disintegrated Cities declined Armies were no longer organized units The world that had once run on the Roman system was suddenly empty.\nAnd it was at this moment that the various Germanic tribes stepped up.\nThey weren\u0026rsquo;t sophisticated or romantic, but they had several crucial advantages:\nStrong organization Highly militarized They could fight, and they could govern To put it bluntly:\nWhile others were still reminiscing about Rome, they had already begun to take control of reality.\nSo It Wasn\u0026rsquo;t That They \u0026ldquo;Claimed\u0026rdquo; to Be Rulers; Others Invited Them This is a commonly misunderstood point.\nIt wasn\u0026rsquo;t the Germans who came out and said, \u0026ldquo;We are the heirs of Rome.\u0026rdquo;\nInstead, the Church and local elites of the time discovered—\nWithout them, order simply couldn\u0026rsquo;t be maintained.\nThis led to a very pragmatic model of cooperation:\nThe Church provided \u0026ldquo;legitimacy\u0026rdquo; (You are approved by God). The German warriors provided \u0026ldquo;force\u0026rdquo; and order. This was the underlying logic of what later became the \u0026ldquo;Holy Roman Empire.\u0026rdquo;\nIt wasn\u0026rsquo;t about cultural inheritance, but a power exchange.\nThen Things Started to Get Interesting Because the German lands were long in a state of:\nNo unified country Numerous princes and lords Every house was a military power Every house had a \u0026ldquo;legitimate bloodline\u0026rdquo; What did this mean?\nIt meant that this region became Europe\u0026rsquo;s—\nRoyal Reserve Pool.\nA dynasty in some country ended?\nGo find a replacement in Germany.\nA country\u0026rsquo;s situation is unstable?\nFind a German noble to stabilize things.\nOver time, almost all of Europe\u0026rsquo;s royal families were \u0026ldquo;contracted out\u0026rdquo; by this system.\nThe United Kingdom Is the Most Typical Example Many people think the British royal family is very \u0026ldquo;native,\u0026rdquo; but it\u0026rsquo;s quite the opposite.\nUntil before World War I, the official family name of the British royal family was: Saxe-Coburg-Gotha\nStandard German.\nBecause anti-German sentiment was so strong during WWI, they were forced to change it to the very \u0026ldquo;British-sounding\u0026rdquo; name we know today—Windsor.\nAnd you have to know something:\nThe mother tongue of early British kings was not English.\nThey were more accustomed to speaking German in their daily lives,\nEnglish was more the \u0026ldquo;language of their subjects.\u0026rdquo;\nHence the widely circulated phrase—\n\u0026ldquo;The King of England can\u0026rsquo;t speak English.\u0026rdquo;\nOther Countries Were the Same 🇪🇸 Spain The House of Bourbon came from France, and the French royal system itself was heavily influenced by the German nobility structure.\n🇧🇪 Belgium The royal family comes directly from a German noble family.\n🇳🇱 Netherlands The ruling family also belongs to the German nobility system.\n🇮🇹 Italy The royal family after unification came from a noble house in the Alpine region, which was itself a German-Italian hybrid system.\nNo matter how you look at it, it all comes back to the circle of German nobility.\nThis is not a coincidence, but a structural outcome.\nAnd Here\u0026rsquo;s the Real Irony Later, when Europe entered the era of nation-states,\npeople began to talk about \u0026ldquo;national identity\u0026rdquo; and \u0026ldquo;state identity.\u0026rdquo;\nBut before that—\nThe royal families who ruled these countries were precisely the group of people who cared the least about nationality.\nThey recognized only bloodlines, not borders;\nFor them, a country was just a \u0026ldquo;place of work.\u0026rdquo;\nEurope\u0026rsquo;s royal families were not symbols of their nations,\nThey were a small group of people who were the first to \u0026ldquo;go international\u0026rdquo; in the Middle Ages.\n","permalink":"https://www.houdao.org/en/the-truth-about-europe-s-royal-families-they-were-almost-all-german/","summary":"\u003cp\u003eMany people assume that,\u003c/p\u003e\n\u003cp\u003eThe British royal family is British,\u003c/p\u003e\n\u003cp\u003eThe French royal family is French,\u003c/p\u003e\n\u003cp\u003eAnd the Spanish royal family is, naturally, Spanish.\u003c/p\u003e\n\u003cp\u003eBut if you take even a brief look at the history of European royalty, you\u0026rsquo;ll discover a fact that seems absurd, yet is entirely true—\u003c/p\u003e\n\u003cblockquote\u003e\n\u003cp\u003eThe core of the entire European royal system is almost entirely of German origin.\u003c/p\u003e\n\u003c/blockquote\u003e\n\u003cp\u003eAnd not just a little bit. We\u0026rsquo;re talking about a systemic presence.\u003c/p\u003e","title":"The Truth About Europe's Royal Families: They Were Almost All German"},{"content":" Historical and archaeological clarification:\nThe imperial examination system was not solely about the eight-legged essay; it originally promoted a balance of arts and sciences.\nThe foundation of Han civilization\u0026rsquo;s belief system is rationality and ethics, not theocracy.\nWhile Europe was consumed by faith, China had long esteemed science.\nMany people assume that the ancient imperial examinations only tested on the eight-legged essay, and that scholars were all \u0026ldquo;bookworms.\u0026rdquo; But the opposite is true.\nFor a very long time, the true imperial examination system was a balance of arts and sciences.\nAncient China was not just a land of poetry, books, rites, and music; it was a civilization that revered science and reason.\n📖 I. The Starting Point of the Imperial Exams: Giving a Chance to Scholars from Humble Backgrounds Emperor Yang of the Sui Dynasty initiated the imperial examination system, and the Tang Dynasty perfected it.\nThis system broke the monopoly of aristocratic clans, allowing common people to enter officialdom through knowledge.\nThis was the world\u0026rsquo;s earliest system of \u0026ldquo;meritocratic equality.\u0026rdquo;\nThe Tang Dynasty\u0026rsquo;s imperial examinations not only tested for the \u0026ldquo;Jinshi\u0026rdquo; (advanced scholar) degree but also included STEM subjects like \u0026ldquo;Mathematics\u0026rdquo; and \u0026ldquo;Arithmetical Studies\u0026rdquo;:\nGeometric surveying Hydraulic engineering design Architectural proportions Astronomy and calendrical science The ability of the Tang Monk and his companions to accurately predict a solar eclipse was not a miracle—it was science.\nThe study of science and engineering was a key criterion for selecting talent by the government at the time.\n📚 II. The Nine Chapters on the Mathematical Art: The Foundation of the Han Rational Tradition By the first century BCE, the Chinese had already written The Nine Chapters on the Mathematical Art.\nThis book could solve systems of linear equations, measure slopes, and calculate dike constructions, making it the world\u0026rsquo;s earliest masterpiece of applied mathematics.\nOne problem from the book asks:\n\u0026ldquo;There are three types of grain, with different prices and different weights. When mixed and sold, a certain amount of money is obtained. What is the price of each type of grain?\u0026rdquo;\nThis is the prototype of a system of three linear equations with three variables.\nAt that time, Europe was still using Roman numerals and had not even developed the concept of \u0026ldquo;zero.\u0026rdquo;\nThis book later became the core textbook for the \u0026ldquo;Mathematics\u0026rdquo; subject in the Sui and Tang dynasties, reflecting the underlying spirit of the Han people: \u0026ldquo;to trust in reason and to value practical application.\u0026rdquo;\n🧮 III. STEM Exam Questions: As Difficult as Modern Engineering The examination questions for a \u0026ldquo;Mathematics Graduate\u0026rdquo; in the Song Dynasty were extremely difficult. For example:\n\u0026ldquo;If a canal is divided into three branches, each drawing a different amount of water, how high should the weir be built to make the water flow evenly?\u0026rdquo;\nThis already involves fluid dynamics and geometric calculations.\nAt that time, officials like the \u0026ldquo;Doctor of Mathematics\u0026rdquo; and the \u0026ldquo;Director of Waterways\u0026rdquo; were in charge of engineering and surveying.\nPassing this kind of \u0026ldquo;STEM examination\u0026rdquo; was equivalent to becoming a \u0026ldquo;state engineer\u0026rdquo; today.\nIn that era, being an official required not only writing poetry but also understanding architecture and algorithms.\nRationality, practicality, and science were part of the government system.\n⛪ IV. The Divergence of Reason and Faith: Different Paths for the Han and Europe Meanwhile, Europe was mired in the \u0026ldquo;Dark Ages\u0026rdquo; under religious rule.\nThe Church declared:\n\u0026ldquo;The Earth is the center of the universe. To question this is heresy.\u0026rdquo;\nBruno was burned at the stake, Copernicus was imprisoned, and Galileo was forced to recant.\nReason and science were reduced to ashes by the fires of faith.\nChina, on the other hand, used the \u0026ldquo;imperial examinations\u0026rdquo; to stimulate reason and replaced faith with \u0026ldquo;scholarship.\u0026rdquo;\nOne used religion to control thought; the other used examinations to reward intellect.\nThese two paths determined the trajectories of two different civilizations.\n☪️ V. A Backward Europe, An Open Islamic World While medieval Europe was shackled by religion,\nthe Islamic world was at the peak of its civilization.\nBaghdad\u0026rsquo;s \u0026ldquo;House of Wisdom\u0026rdquo; brought together scholars from Greece, Persia, and India,\ncatalyzing leaps in algebra, astronomy, medicine, and chemistry.\n\u0026ldquo;Arabic numerals\u0026rdquo; and chemical terms with the prefix \u0026ldquo;al-\u0026rdquo; all originated from this period.\nAt that time, Muslim women were not required to cover their heads,\nwhile the Christian world demanded women to veil their faces and forbade them from learning.\nAt that time, Islam was more open, and Christianity was more conservative.\nThe key to civilization is not the name of the religion, but whether it respects reason.\n🎨 VI. The Renaissance: The Rebirth of Reason, Europe\u0026rsquo;s Comeback In the 16th century, Luther\u0026rsquo;s Reformation tore apart the shackles of theocracy,\nand the liberation of thought brought about the Renaissance and the Scientific Revolution.\nDa Vinci, Copernicus, Galileo, Newton\u0026hellip;\nHumanity progressed from a geocentric model to understanding the cosmos, from alchemy to chemistry, from faith to science.\nThe Renaissance paved the way for Europe\u0026rsquo;s future technological leadership.\n⚙️ VII. China\u0026rsquo;s Lost Trajectory: The Interruption of the STEM Tradition The wars of the Five Dynasties and Ten Kingdoms period destroyed the education system; Although the Song Dynasty retained mathematics exams, their status declined; The Yuan Dynasty abolished STEM examinations for the Han Chinese; The Ming Dynasty replaced practical studies with the eight-legged essay—reason was shackled by literary formalism. From that point on, China\u0026rsquo;s technology ceased to develop systematically.\nCraftsmanship remained a mere \u0026ldquo;technique,\u0026rdquo; losing its underlying \u0026ldquo;principle\u0026rdquo; or \u0026ldquo;way.\u0026rdquo;\nAs Europe sailed towards the Age of Discovery and the Industrial Revolution,\nwe stalled on the eve of our own \u0026ldquo;Tiangong Kaiwu\u0026rdquo; (The Exploitation of the Works of Nature).\n☯️ VIII. The Core of Han Belief: Respecting Spirits but Keeping a Distance (Connecting the previous and next points: Why the Han people are naturally endowed with a rational gene)\nTo understand why China was able to embark on the path of reason and science so early,\none must return to the source of its thought—the belief structure of the Han people.\nKing Wen of Zhou forbade the \u0026ldquo;chaotic worship of ghosts and spirits.\u0026rdquo;\nConfucius went further, saying, \u0026ldquo;Respect ghosts and gods, but keep them at a distance.\u0026rdquo;\nThis was not just a ritualistic idea but a declaration of spiritual independence.\nThe Han people worship ancestors, not deities;\nYuchi Jingde became a door god, Guan Yu a god of war, and Mazu a protector of seafarers—\nthey are all \u0026ldquo;moralized\u0026rdquo; and \u0026ldquo;personified\u0026rdquo; gods, not religious creations.\nThis cultural DNA proves that:\nThe Han people are naturally endowed with the brilliance of rationality, unconstrained by religious dogma.\nThey believe in patterns, value practice, and are better suited than any other people to follow the path of science.\nIt is for this reason that China could write The Nine Chapters on the Mathematical Art in the BCE era,\nestablish STEM examinations in the Sui and Tang dynasties, and invent gunpowder, the compass, the waterwheel, and printing in the Song Dynasty.\nRationality has always been the hidden source code of Han civilization.\n🕯️ IX. Conclusion: Rationality is a Nation\u0026rsquo;s True Faith From King Wen of Zhou\u0026rsquo;s rational sacrifices to the STEM examinations of the Sui and Tang dynasties;\nfrom the scientific spirit of The Nine Chapters on the Mathematical Art to the belief of \u0026ldquo;respecting spirits but keeping them at a distance\u0026rdquo;;\nthe fundamental color of Han civilization has always been rationality.\nUnfortunately, this flame was once obscured by the shadows of war and power.\nBut reason was never extinguished—\nit still flickers in every heart that seeks truth and dares to question.\nTrue faith is not about looking up at the heavens, but about having your feet firmly on the ground.\nWhen we once again pick up the torch of reason and science,\nperhaps we can, once more, become the guides of human civilization.\n","permalink":"https://www.houdao.org/en/was-the-imperial-examination-in-ancient-china-only-about-the-eight-legged-essay-the-earliest-version-balanced-arts-and-sciences/","summary":"\u003cblockquote\u003e\n\u003cp\u003eHistorical and archaeological clarification:\u003c/p\u003e\n\u003cp\u003eThe imperial examination system was not solely about the eight-legged essay; it originally promoted a balance of arts and sciences.\u003c/p\u003e\n\u003cp\u003eThe foundation of Han civilization\u0026rsquo;s belief system is rationality and ethics, not theocracy.\u003c/p\u003e\n\u003cp\u003eWhile Europe was consumed by faith, China had long esteemed science.\u003c/p\u003e\n\u003c/blockquote\u003e\n\u003ch3 id=\"many-people-assume-that-the-ancient-imperial-examinations-only-tested-on-the-eight-legged-essay-and-that-scholars-were-all-bookworms\"\u003eMany people assume that the ancient imperial examinations only tested on the eight-legged essay, and that scholars were all \u0026ldquo;bookworms.\u0026rdquo;\u003c/h3\u003e\n\u003cp\u003eBut the opposite is true.\u003cbr\u003e\nFor a very long time, the true imperial examination system was a balance of arts and sciences.\u003cbr\u003e\nAncient China was not just a land of poetry, books, rites, and music; it was a civilization that revered science and reason.\u003c/p\u003e","title":"Was the Imperial Examination in Ancient China Only About the Eight-Legged Essay? (The Earliest Version Balanced Arts and Sciences)"},{"content":"When people talk about European democracy, they often focus on a specific revolution or declaration, as if democracy were an institutional innovation that suddenly appeared one day in modern times.\nBut if we look back through history, we discover a more fundamental and often overlooked fact:\nEurope did not suddenly learn republicanism;\nit has long lived with the political experience that \u0026lsquo;a republic can exist.\u0026rsquo;\nThe republic in Europe was never a fleeting moment of inspiration,\nbut an institutional tradition spanning over two millennia.\nPublic Affairs Don\u0026rsquo;t Necessarily Belong to a King This tradition can be traced back to ancient Greece.\nWhy did the republic first appear in Greece?\nThe answer lies not only in ideas but also in geography.\nThe natural structure of the Mediterranean—fragmented peninsulas, rolling mountains, crisscrossing river valleys, and long, winding coastlines—naturally shaped multiple, relatively independent political and economic centers.\nIn such an environment:\nPower was difficult to centralize for long periods. Cities enjoyed extensive autonomy. Multi-centric competition became the norm. The republic was precisely the political form best suited to this environment.\nIn Athens,\nthe democratic reforms beginning in 508 BC systematically introduced a subversive idea for the first time:\nPolitics can be the public affair of citizens, not the private property of a ruler.\nAthenian democracy certainly had strict boundaries for participation,\nbut its historical significance lies not in \u0026lsquo;whether it was sufficiently equal,\u0026rsquo;\nbut in the fact that it clearly demonstrated for the first time:\nDecisions could be made collectively. Power could be rotated, not inherited. Public affairs could exist independently of any single individual. Once this idea emerged, it became an indelible source in European political thought.\nRepublics Weren\u0026rsquo;t Just for Small City-States If Athens proved that \u0026lsquo;a republic is possible,\u0026rsquo;\nthen the Roman Republic further proved that:\nA republic can not only exist,\nbut can also function in a large state over the long term.\nFrom 509 BC to 27 BC,\nthe Roman Republic lasted for nearly five centuries.\nThe Romans used one term to define the state:\nRes Publica — the public affair.\nThis meant:\nThe state was not the property of a single family. Power was deliberately divided and balanced. The law was above any individual. Even after Rome entered its imperial era, the Senate, the legal system, and urban autonomy did not disappear.\nThe republic was preserved in institutions and memory, becoming a vital political resource for later generations to draw upon.\nThe Middle Ages: Not a Republican Void Many people assume that medieval Europe was left with only feudal monarchies,\nbut the opposite is true.\nIn regions with highly developed commerce, shipping, and cities, the republic did not vanish. Instead, it moved into the cities and continued to exist in another form.\nThe most famous example is the Republic of Venice.\nFrom 697 to 1797,\nthis kingless republic existed for a full 1100 years.\nThe Doge served for life but was strictly constrained by layers of councils and institutions, with the entire political design revolving around a single goal:\nTo prevent any single individual from controlling the state.\nAlongside Venice, there was a series of Italian city-state republics:\nRepublic of Florence (1115–1532) Republic of Genoa (1005–1797) Republic of Pisa (11th–13th centuries) Their fates varied, but they shared a clear commonality:\nIn Europe, monarchy was never the only political option.\nWhen the Republic Entered the World of Commerce Beyond Italy, the republican spirit also spread along another path—commerce.\nThe Hanseatic League, active from the 13th to the 16th century,\nwas not a state but a confederation of autonomous cities.\nIts core members were a group of free cities without hereditary monarchs:\nLübeck (the de facto leader) Hamburg, Bremen Riga, Tallinn Danzig (Gdańsk) Stockholm, etc. These cities organized power and order through councils, contracts, and negotiation, demonstrating an important republican experience:\nA state does not necessarily need to be sustained by royal authority;\nrules, credit, and negotiation can also form a stable order.\nThis experience profoundly influenced the later free city system and commercial law traditions, and also became an early prototype for the organizational logic of modern economic communities.\nFrom Europe to America, and Back to Europe By the 18th century,\nthese republican experiences, scattered across Europe,\nwere systematically integrated for the first time.\nThe United States did not create its republican system out of thin air;\nit drew mature nutrients from European history:\nRome\u0026rsquo;s republican language and checks and balances The autonomous experience of European city-states Britain\u0026rsquo;s parliamentary tradition The Enlightenment concepts of the rule of law and rights America\u0026rsquo;s innovation was to write these experiences into a formal constitution,\nmaking the republic a replicable and sustainable system for a nation-state.\nAnd this modern republican model, already proven in practice,\nsoon crossed the Atlantic again to influence the European continent.\nThe French Revolution: The Modern Crystallization of Europe\u0026rsquo;s Republican Tradition In 1792, the French Republic was established.\nFrance was not Europe\u0026rsquo;s first republic,\nbut it was the first modern European polity to explicitly base its sole legitimacy on being a \u0026lsquo;republic.\u0026rsquo;\nThis transformation did not occur in isolation.\nLafayette\npersonally participated in the American Revolutionary War, bringing practical republican experience back to France;\nThomas Jefferson,\nas the U.S. ambassador to France, was deeply involved in the intellectual exchanges of the French Revolution;\nThe language concerning rights, sovereignty, and law in France\u0026rsquo;s Declaration of the Rights of Man and of the Citizen\nis spiritually highly aligned with the American Revolution.\nDuring the revolution, the Jacobins advanced republican practice with popular sovereignty and citizen rights as core tenets. However, in the real-world context of war and mounting internal and external pressures, their political practice gradually devolved into maintaining order through terror.\nFrance subsequently experienced Napoleon\u0026rsquo;s rise as emperor, the restoration of the monarchy, and further republican periods, until the late 19th century, when the republic finally stabilized as the nation\u0026rsquo;s fundamental form.\nConclusion European democracy is not an accidental flash in history,\nbut the result of over two millennia of repeated practice, sedimentation, and selection.\n","permalink":"https://www.houdao.org/en/why-did-europe-turn-to-democracy-the-republican-tradition-not-an-accidental-historical-choice/","summary":"\u003cp\u003eWhen people talk about European democracy, they often focus on a specific revolution or declaration, as if democracy were an institutional innovation that suddenly appeared one day in modern times.\u003c/p\u003e\n\u003cp\u003eBut if we look back through history, we discover a more fundamental and often overlooked fact:\u003c/p\u003e\n\u003cblockquote\u003e\n\u003cp\u003e\u003cstrong\u003eEurope did not suddenly learn republicanism;\u003c/strong\u003e\u003cbr\u003e\n\u003cstrong\u003eit has long lived with the political experience that \u0026lsquo;a republic can exist.\u0026rsquo;\u003c/strong\u003e\u003c/p\u003e\n\u003c/blockquote\u003e\n\u003cp\u003eThe republic in Europe was never a fleeting moment of inspiration,\u003cbr\u003e\nbut an institutional tradition spanning over two millennia.\u003c/p\u003e","title":"Why Did Europe Turn to Democracy? — The Republican Tradition, Not an Accidental Historical Choice"},{"content":"Born in 1979.\nI learned to read in the Daba Mountains\nand later left for Xi’an to study.\nElectronic engineering was my first discipline;\ncomputer science became the second—\nhardware and software growing together.\nI once worked as a telecom engineer in a multinational,\nand also as a small webmaster on the early Chinese internet.\nFor a season the site breathed\nwith a million visitors a day,\ntwenty million views,\na small crew of more than sixty—\na tide that has since withdrawn.\nI design systems, shape products,\nand try to understand the people who use them.\nMuay Thai keeps my body honest.\nI dive into the sea with a spear,\nwhere fear becomes clear and simple.\nThe guitar is a conversation only with myself.\nI am drawn to physics and to time,\nto the quiet way civilizations appear and fade.\nRome and Chang’an share the same room in my mind,\nso do Greece and the Han.\nThrough Fourier I sense the texture of things;\nthrough Maxwell the hidden strings beneath order;\nwithin the folds of Calabi–Yau\nquantum tides arrive and withdraw.\nAbove me—the afterglow of the Big Bang.\nBelow me—a mote at the Planck scale.\nI keep a wide, untidy library:\nhistory as my desk,\nengineering as my boat.\nI have climbed the steps of the pyramids,\nwalked the streets of Jerusalem,\nfelt the wind of Istanbul in my hair.\nI sang by the Wall,\nand floated on the Dead Sea.\nThe world does not choose its heroes by learning alone.\nI am only a brief traveler in the current of time.\nThe capable grow busy, the clever grow anxious;\nthose who understand ask for little.\nAmbitions in the chest,\na quiet life by the Mediterranean.\nEach day: rise early, train, read, think, raise my child—\ntreating the rest of life as a long practice.\nThis is where I leave my thoughts and traces.\nTrue resonance is rare;\nmay we recognize each other.\n","permalink":"https://www.houdao.org/en/about/","summary":"\u003cp\u003eBorn in 1979.\u003c/p\u003e\n\u003cp\u003eI learned to read in the Daba Mountains\u003cbr\u003e\nand later left for Xi’an to study.\u003cbr\u003e\nElectronic engineering was my first discipline;\u003cbr\u003e\ncomputer science became the second—\u003cbr\u003e\nhardware and software growing together.\u003c/p\u003e\n\u003cp\u003eI once worked as a telecom engineer in a multinational,\u003cbr\u003e\nand also as a small webmaster on the early Chinese internet.\u003c/p\u003e\n\u003cp\u003eFor a season the site breathed\u003cbr\u003e\nwith a million visitors a day,\u003cbr\u003e\ntwenty million views,\u003cbr\u003e\na small crew of more than sixty—\u003cbr\u003e\na tide that has since withdrawn.\u003c/p\u003e","title":"About"}]