Ancient China's Greatest Empire- The Tang Dynasty Exposed

For about 300 years, one empire sat at the very top of the world. Not just in military strength. Not just in money. In everything science, art, law, trade and a cultural reach that stretched clear across the known world. Its capital was so enormous that every other city on earth looked like a village by comparison. London, at the same moment in history, had maybe 15,000 people living in it. This capital had over a million. It built a legal code so well-designed that its neighbors didn't just admire it, they copied it. Word for word. It sat at the crossroads of the entire Silk Road, which meant the world didn't just hear about this empire. The world came to it. Persians, Arabs, Indians, Koreans, Japanese, all walking the same streets on the same afternoon. This was the Tang Dynasty. China's golden age. And according to a lot of people, the single most powerful dynasty in all of Chinese history. But hold on a second. Before we hand the Tang that crown, let's actually ask the question buried inside it. What does most powerful even mean? Because the Tang has serious competition. The Han Dynasty practically invented the idea of Imperial China. The Ming gave the world the Forbidden City and a fleet that dwarfed anything in Europe. The Qing ruled the largest Chinese empire that ever existed. So why the Tang? What makes us so sure it deserves to sit above all of them? And here's the part nobody likes to bring up. At the celebration, this golden age ended in catastrophe. One of the deadliest wars in human history. 150 years of slow grinding collapse. An empire that at its peak looked unstoppable and then fell apart so completely that the capital itself was reduced to rubble. So which is the real Tang, the untouchable superpower? Or a beautiful myth covering up a spectacular failure? That's what we're here to settle today. No cheerleading, no hit piece. We're going to put the Tang Dynasty on trial. And by the end, you're going to be the judge. Here's the problem with the phrase most powerful. Powerful how? If we don't define it, we're just trading opinions. So before we go anywhere, let's lay down the rules of this trial. We're going to judge the Tang on five clear measures, and we'll come back to them at the end of every chapter. Measure one. Institutions and law. Anyone can win a battle. But can you build a system of government that's fair, that lasts, and that other nations actually want to copy? Measure two. Scale and military. How much territory? How dominant was the army who feared them and who paid them tribute? Measure three. Economy and cities. Wealth trade and the size and splendor of the capital. Because a great empire shows up in its streets. Measure four. Culture. The art, the poetry, the technology, the stuff that outlives the soldiers. Measure five. The staying power of the legacy. This is the big one. When the dynasty finally dies, and they all die, what's left behind? Does the world even remember it was there? Five measures. Keep them in your head. Let's start where every empire has to start. With the chaos it was born out of. To understand how impressive the Tang was, you have to understand the mess it climbed out of. The Han Dynasty. China's first great imperial age collapsed back in the year 220, and what came after wasn't a quick handover to the next dynasty. It was almost 400 years of fragmentation. Warlords carving the country into pieces. Competing kingdoms. Invasions sweeping in off the northern steppe. The population didn't just stagnate. In places, it collapsed. These were not good centuries to be alive in China. Then, in the year 581, a man named Yang Jian pulled off something nobody had managed in nearly four centuries. He reunified the country. He founded the Sui Dynasty and took the title Emperor Wen. And honestly, he was good at the job. He was frugal. He was capable. He was fair. For a moment there, it looked like the Sui might be the dynasty that put China back together for good. And then his son took over. Emperor Yang of Sui is one of history's great cautionary tales. A case study in how to inherit something wonderful and burn it to the ground as fast as humanly possible. He forced an estimated 6 million peasants to dig the Grand Canal, that massive waterway linking northern and southern China. Now, the canal itself was genuinely useful. Parts of it are still in use today. But the human cost was horrifying. Hundreds of thousands of people died building it. Then he decided to invade the Korean kingdom of Goguryeo. Not once three times. He lost all three. In the third campaign alone, he reportedly threw away 300,000 soldiers. And to pay for these disasters, he taxed his own people straight into poverty. You can probably guess what happened next. Rebellions broke out across the entire country. By the year 617, the Sui dynasty was coming apart at every seam. And into that vacuum stepped a man named Li Yuan. Now, Li Yuan was no lucky nobody. He was an aristocrat and a military general. And through his mother's side, he even had distant blood ties to the Sui royal family itself. He knew exactly how the system worked from the inside. So in 617, with the Sui visibly falling apart, he raised his army in Taiyuan in northern China and marched on the capital Chang'an. He took it. And in 618, when Emperor Yang of Sui was assassinated by one of his own officials, Li Yuan made it official. He declared himself the first emperor of a brand new dynasty, the Tang, and took the throne name Gaozu. The Tang dynasty was born. But here's the thing about that founding. The real military genius behind it. That wasn't Li Yuan at all. It was his second son. And what that son built is where our trial truly begins. His name was Li Ximin. And he was about 18 years old when the rebellion kicked off. By then, he was already a better battlefield commander than most men twice his age. Over the next decade, it was Li Ximin, not his father, who personally led the campaigns that crushed the Tang's last rivals and finished unifying China by the year 628. He was brilliant. He was charismatic. And he was becoming painfully aware that he had done far more to build this dynasty than his older brother Jiancheng, who happened to be the crown prince, the official heir. That tension between the brothers kept building until finally it couldn't be contained. In the year 600 to 26, Li Ximin made his move first. At the Xuanwu Gate of the imperial palace in Chang'an, he and his allies ambushed and killed both of his brothers, his older brother Jiancheng and his younger brother Yuanji. Then he walked straight to his father, the emperor, and told him what he'd done. Gaozu now with no surviving sons except the one standing in front of him, abdicated. And Li Ximin became Emperor Taizong. Historians have argued for 1400 years about how to judge what happened at that gate. Taizong himself clearly felt something about it. He later commissioned official histories that conveniently softened the story. But here's the uncomfortable truth. That act of violence handed China one of the greatest rulers in its entire history. And what he built next is the whole reason we're even having this debate. Close your eyes for a second and imagine you're standing in Tang China in the year 643. You're a young official, you passed the imperial examinations only recently, and you still can't quite believe you're here standing in the great court hall of Chang'an, the most powerful room in the world. The air smells of incense and lacquer, rows of ministers stand in perfect silence. And then you hear it. A senior minister named Wei Zheng has risen to his feet and he is criticizing the emperor. Out loud. In open court. To his face. Your stomach drops. In any other dynasty in almost any court on earth, those words would cost a man his head. You wait for the guards to move. But they don't. The emperor, the son of heaven himself, simply listens. He nods. And then he thanks the man for it. That scene right there is the heart of the case for the Tang's institutions and it's worth slowing down on. Because it's genuinely rare in world history. Let's start with the law itself. The Tang Code was formally completed in 653 just after Taizong's death. But the work began under his reign. And it was extraordinary. It was one of the most comprehensive legal documents anywhere in the ancient world covering criminal offenses, administrative regulations, family law, all of it. It was precise. And by the standards of its time, it was relatively humane. It was so well built that the Korean, Japanese and Vietnamese legal systems later adopted huge chunks of it directly. We'll come back to that because it matters enormously for measure number five. Second, Taizong strengthened the civil service examination system, the kaiju. The idea was simple and for its era, almost radical instead of handing government jobs to aristocrats purely because of who their parents were, you test people. The highest scorers get the jobs. It didn't erase aristocratic privilege overnight but it cracked open a door and over the centuries that door would reshape Chinese society completely. And third, that man in the court. His name was Wei Zheng and here's the kicker. Wei Zheng had originally backed Taizong's older brother, the very same brother Taizong killed at the Xuanwu Gate. Most rulers would have executed a man like that on sight. Taizong made him a senior minister instead and then Wei Zheng spent the rest of his life arguing with him, criticizing his decisions in open court, writing him sharp blunt memos pointing out every mistake. And Taizong, to his enormous credit, protected the man every single time and rewarded him for it. When Wei Zheng died in 643, Taizong reportedly stood over his coffin and said something that's been repeated in China for 1400 years. The gist of it was this. With a bronze mirror, you can straighten your appearance. With history as a mirror, you can understand the rise and fall of empires. But with an honest man as your mirror, you can see your own mistakes and Wei Zheng was that mirror for me. Now I've lost him. People still quote that today. And the reason it survives is simple. A ruler who genuinely wanted to be corrected is so rare that when it actually happens, the world doesn't forget it. Taizong ruled from 626 to 649 and in Chinese historical tradition, his reign has a name, the reign of Zhenguan. It's held up not just in Tang history but in all of Chinese history as the gold standard of good government. Fix the law. Open up government to talent. Surround yourself with honest people and actually listen to them. That's the formula. And Taizong ran it about as well as any ruler ever has. For measure one, institutions and law, the Tang is already building a powerful case. But the strongest test of an institution isn't whether it works under a great ruler. It's whether it survives a crisis that should tear it apart. And the Tang was about to face exactly that in the form of a woman who had been living in the palace the entire time. Her name was Wu Zetian and she is one of the most fiercely debated figures in all of Chinese history. People have been arguing about her for 1300 years. Was she a monster? A brilliant ruler? Both at once. Let's just walk through what actually happened because the facts don't need any embellishment. Wu Zetian was born in 624. At the age of 14, she entered the palace as one of dozens of concubines belonging to Emperor Taizong. When Taizong died in 649, tradition demanded that his concubines shave their heads and retire to a Buddhist convent for the rest of their lives. So that's where she went. But then Emperor Gaozong Taizong's son and successor encountered her during a visit to that convent. He'd apparently been infatuated with her back in his father's court and he brought her back to the palace as his own consort. And from that moment on, her rise was relentless. She outmaneuvered Gaozong's existing empress and a rival consort. And by 655, she had been declared the new empress herself. Through the 660s and 670s, Gaozong's health collapsed severe headaches that some modern historians think point to a stroke condition. And as he weakened, Wu Zetian took on more and more direct control. Court documents started referring to the two of them jointly as the Two Sages. In plain terms, she was running the empire. When Gaozong died in 683, she became regent for her son. Within two months, she removed him and swapped in another son who was easier to control. And then in the year 690, she stopped pretending altogether. Wu Zetian declared a brand new dynasty, the Zhou, and proclaimed herself its emperor. Not empress, not regent. Emperor. The title of the son of heaven, which in Chinese political theory, could only ever be held by a man she took it. She is the only woman in all of Chinese history to ever do that. And here's what matters for our trial. As ruler, she didn't dismantle the Tang system she leaned into it. She deliberately expanded the examination system, created whole new exam categories, and personally presided over some of the tests. Part of that was cold politics. She was undercutting the old aristocratic families who hated her and replacing them with officials who owed their careers directly to her. But it was also genuinely good policy. The system she expanded would outlast her by a thousand years. So think about what just happened. The Tang's institutions didn't just survive an emperor murdering his brothers to take the throne. They survived a complete change of dynasty, a woman seizing absolute power and renaming the whole empire and the machine of government just kept running. The laws held. The exams held. The state stayed functional. That is an incredibly strong opening argument. On measure one, the Tang doesn't just score well. It might set the standard for the entire imperial era. But remember, Wu Zetian had a darker side. Informants, secret police, dead rivals. We're going to come back to her because that darkness is a preview of something. The same Tang system that looks so strong right here is hiding a weakness that will eventually bring the whole thing crashing down. We'll get to the cracks. But first, let's see what all that money and power actually looked like. Because to really judge this empire, you need to walk its streets. Let's deal with the military first because power in the rawest sense is the ability to make your neighbors afraid of you. And by that measure, the early Tang was terrifying. For decades, the single greatest threat to northern China had been the eastern Turkic Khaganate, a steppe power that had been extracting tribute from Chinese states and raiding the frontier almost at will. In the year 630, Tang armies didn't just push them back. They destroyed them. They shattered the eastern Turkic Khaganate as a political force. And then something remarkable happened. The Turkic tribal leaders, the people the Tang had just beaten, gave Emperor Taizong a title of their own. They called him the Heavenly Khan, Tian Kehan. Think about what that means. A Chinese emperor, being honored in the political language of the steppe nomads, recognized as the supreme ruler, not just of China, but of the people beyond its borders. No Chinese emperor before him had ever held a title like that. That tells you the sheer breadth of the Tang's reach in these early decades. It wasn't just a Chinese empire. It was the center of a much larger world order. But military dominance is only half of measure two and three. The other half is what that dominance paid for. And to see that you have to walk into the capital. So let's do exactly that. Imagine you're standing in Tang China in the year 740. In front of you is the largest, most cosmopolitan city on the face of the earth, Chang'an. It covers roughly 33 square miles laid out in a precise grid of 108 walled wards with its own gates that lock shut at night. The imperial palace complex sits at the northern end and the whole city is built with a mathematical precision that's meant to communicate one thing to anyone who sees it order. Power. Control. You make your way toward the West Market and the West Market is something else entirely because this is the eastern end of the Silk Road. The place where the road finally stops. Walk through it on a single afternoon and here's who you'd brush past. A Sogdian merchant from Central Asia haggling over a price. A Persian trader unrolling bolts of cloth. An Arab merchant. An Indian Buddhist monk. Korean and Japanese students who've traveled across the sea to study here. The goods flowing in are almost dreamlike glassware from Syria, spices from Southeast Asia, gemstones from India, horses from Central Asia and flowing back out the other way, silk porcelain, tea and paper. Now look at the buildings around you. Within this one city, all functioning openly, at the same time, there are Buddhist monasteries, Daoist temples, Zoroastrian fire temples, Nestorian Christian churches and as Arab contact, grew through the 7th century early mosques. Five different religions side by side in one capital. That kind of openness had no parallel anywhere else in the world. Let's put that in perspective because the numbers genuinely don't feel real. Population estimates for Tang era Xiongan run from 600,000 to over a million people inside the city walls with maybe another million in the surrounding region. Now compare that to the rest of the world at the very same moment. Medieval London, 15,000 people. Paris, maybe 30,000. Even Constantinople, the largest city in the entire Western world, had somewhere around 300,000 to 400,000. Chang'an wasn't just bigger, it was in a completely different category. It was by a wide margin, the largest city on the planet. And the wealth wasn't just sitting in the capital. Step back and look at the empire as a whole at its peak. Under Emperor Xuanzong, the census of the year 742 recorded a population of 50 to 53 million people. Tax revenues were the highest in all of Tang history. The grain reserves were full. The military was strong and well organized. The silk road trade was running at full capacity. By almost any measurable standard, you can name Tang China. At this moment, was the most powerful and most prosperous state on earth. So tally up measures two and three. Military dominance that earned its emperor a title no Chinese ruler had ever held. A capital city that dwarfed every other city in the world. A trade network that pulled in goods and people from three continents. An empire of 50 million people with full granaries and the richest treasury in its history. On scale on wealth on cities, the case for the defense is overwhelming. If the trial ended right here, the verdict would be obvious. But the trial doesn't end here. Because everything I just described, the wealth, the open borders, the reliance on a strong army out on the frontier, every single one of those strengths was about to turn into a weakness. The Tang was at its absolute peak in the year 740. 15 years later, it would nearly cease to exist. Here's the cruel irony at the center of the Tang story. The same emperor who presided over the Golden Age also presided over its collapse. And he did both. Emperor Xuanzong came to the throne in 712 and would reign for 44 years. The first half of that reign, roughly 713-741, an era the Chinese call the Kaiyuan, is considered the absolute high point of Tang civilization. Honestly, you could argue it's the high point of the entire medieval world. This was the era of the full granaries and the 50 million person census we just talked about. But somewhere around the year 740, the man changed. And so did his empire. Xuanzong became completely infatuated with a young woman named Yang Yuhuan, known to history as Yang Guifei, precious consort Yang. There was an awkward detail. She had originally been the consort of one of his own sons. So Xuanzong had her formally enter a religious order, a legal fiction, that fooled absolutely nobody, and then took her as his own imperial consort. And as Yang Guifei rose, her family rose with her. Her cousin, a man named Yang Guozhong, was appointed chief minister in 752. He was not remotely up to the job. Political management began to rot. Competent officials were pushed aside. The court turned its attention away from governing and toward luxury and factional infighting. Meanwhile, out on the frontiers, something dangerous had been quietly building for a very long time. And it grew directly out of one of the Tang's supposed strengths. Remember how the Tang relied on a strong army to dominate its neighbors? Over the previous century, the government had increasingly outsourced frontier defense to semi-autonomous military governors called the jiadushi. These men controlled their own armies, collected their own taxes, made their own appointments. And here's the fatal part. By the 750s, the forces these governors commanded out on the frontier dwarfed anything the central government could actually field itself. The wealth and comfort of the golden age had made military conscription deeply unpopular in the heartland. So the court had simply let its own central forces wither and leaned on the frontier armies instead. It was a disaster waiting for someone to set it off. And one man was perfectly positioned to do it. His name was Enlushin. He commanded three of those frontier armies simultaneously. He was the son of a Sogdian father and a Turkic mother born on the frontier, tough multilingual and famously enormously fat, which apparently did nothing to slow him down as either a soldier or a political operator. Because Enlushin had charmed his way into the very heart of the court, he played the fool. He flattered the emperor. He had even been ceremonially adopted by Yang Guifei as a kind of joke a grown man and adopted son of the imperial consort. The whole court found him entertaining. And the whole time he was playing the fool, he was assembling one of the largest private armies in the entire empire. Now picture the moment it all came apart. Imagine you're standing in Tang China on the night of December 16th, 755. The northern horizon is on fire. Word is racing south faster than any rider 160,000 soldiers are marching toward the capital. Enlushin has revolted. And here is the part that should be impossible between this massive rebel army and the heart of the most powerful empire on earth. There is almost nothing standing in the way. The central government's own forces have atrophied into irrelevance. The empire that beat the Turks and earned its emperor the title of Heavenly Khan cannot field an army to defend its own capital. The eastern capital Luoyang fell in January of 756. Chang'an, the greatest city in the world, fell that July. Emperor Xuanzong, now 71 years old, fled the capital in the dead of night with a small escort heading southwest toward the safety of Sichuan. And then at a relay station called Mawei, everything fell apart for him personally. The imperial guard escorting the emperor mutinied. They killed the chief minister Yang Guozhong blaming him for the entire catastrophe. And then the officers turned to the emperor himself with a demand. Yang Guifei had to die too? The logic, brutal as it was, made a grim kind of sense to the soldiers. Yang Guozhong was her cousin. The Yang family's grip on the court had helped cause this disaster and the men would not march another step until she was gone. Xuanzong tried to argue. The accounts say he wept. Picture it, a 71-year-old man standing at a roadside relay station, his empire burning behind him, his guards refusing to move telling him to give the order to kill the woman he loved. He gave it. Yang Guifei was led away and strangled. She was around 38 years old. Xuanzong would never see Chang'an again. He survived the war, but he was allowed to return only as a powerless retired emperor and he reportedly spent the rest of his life weeping for her. This is the heart of the case for the prosecution. Ask yourself the hard question the title of this video demands. Should the most powerful empire on earth be capable of nearly collapsing after a single rebellion? Or does the speed of that collapse tell you something that the Golden Age wasn't as solid as it looked? That the wealth and the comfort and the outsourced armies had hollowed it out from the inside? That the seeds of the catastrophe were planted at the very peak? We've heard how much the Tang built. Now we have to count what it cost. Because the rebellion itself was only the beginning of the bleeding. The An Lushan rebellion dragged on from 755 all the way to 763 and the Tang did not win it cleanly. To take back its own capitals, the dynasty had to lean heavily on Uyghur cavalry allies from the steppe. Who extracted an enormous price for their help and Lushan himself didn't even live to see the end of it. He was assassinated by his own son in 757. The rebellion limped on under his successors until it finally collapsed in 763. So the dynasty survived. But now we have to count the cost. And the cost is almost beyond comprehension. A census taken in 754 just before the rebellion recorded a registered population of roughly 52 million people. The census taken in 764 just after it ended recorded about 17 million. Let that sit for a moment. On paper, two-thirds of the registered population had vanished. Now, historians are careful here and you should be too. A big part of that drop reflects administrative collapse and people being displaced fleeing hiding, falling off the tax registers rather than pure death. The government simply lost track of millions of people in the chaos. But even after you account for all of that modern demographic analysis, still estimates the true death toll from battle famine disease and displacement combined somewhere in the range of 13 to 36 million people. Think about that range. At the high end, the Aleutian Rebellion may have killed more people than the First World War. It is by any reasonable estimate one of the deadliest conflicts in all of human history. And here's the strange thing. Almost nobody in the West has ever heard of it. It simply doesn't get talked about the way it deserves to. So put that on the scorecard on the prosecution side in bold. The single greatest catastrophe this empire produced was a war that tore out the heart of its own population. You cannot call this the most powerful anything without also reckoning with the fact that its peak gave way to one of the worst human disasters ever recorded. And the Tang that crawled out of 763 was not the Tang that had walked into 755. On the surface, the dynasty had survived. But its real power had not. The central government's authority over the provinces was permanently broken. The jiedushi, those frontier military governors, had just proven in front of everyone that they could field armies that made the emperor irrelevant. And many of the governors who had supposedly fought for the Tang simply stayed put in their territories afterward as autonomous rulers, paying the court a bit of nominal tribute and nothing more. The map still said Tang Empire. The reality on the ground said something very different. The last 150 years of Tang history are honestly exhausting. Not because nothing happens, plenty happens, but because the same grim pattern keeps repeating. Weak emperor. Powerful court faction. Rebellious governor. Crisis. Partial recovery. Crisis again. Let me give you the four structural diseases that ate the dynasty from the inside and then the event that finally finished it off. Disease 1, the eunuchs. Palace eunuchs had always been part of court life in the Tang as in most Chinese dynasties. But after the An Lushan Rebellion, they accumulated power at an alarming rate. By the 800s, the eunuchs weren't just managing the palace. They were commanding the imperial guard armies, which meant they controlled the only serious military force in the capital. And so they began doing the unthinkable selecting emperors and removing or killing them when they became inconvenient. Multiple emperors in the 800s were put on the throne by eunuch factions and disposed of by them later. The son of heaven, in theory, the most powerful man on earth, was often a prisoner in his own palace. Disease 3, the jiedushi again. The semi-autonomous governors never went back in the box. Large stretches of northern China were effectively independent fiefdoms that merely nodded politely toward the Tang emperor. When a governor felt like cooperating, things worked. When he didn't, there was nothing the court could reliably do about it. Disease 4, money. The Tang government was chronically broke after the rebellion. One of its main revenue sources was the state monopoly on salt. And that monopoly steadily collapsed into a black market. With large-scale, illegal salt smuggling networks, the government couldn't suppress. And one of the men running those smuggling networks would become the most dangerous person in China. His name was Huang Chao. He came from a salt merchant family in what is now Shandong province. He was educated, educated enough to sit for the imperial examinations. And he failed them. Repeatedly. Whether that string of failures is what radicalized him or whether he'd have ended up where he did anyway, we'll never know. But by the 870s, he was running large-scale salt smuggling operations and had built himself a private army. Then came the trigger. A drought and a famine in the 870s that destabilized much of northern China. In 874, Huang Chao joined an existing peasant uprising. When its original leader died in battle in 878, Huang Chao took command of the whole movement. And what followed was one of the most dramatic marches in medieval history. Let me put you in the path of it. Imagine you're a Persian merchant living in the southern port city of Guangzhou in the year 879. Your family has lived here for generations. Guangzhou is a thriving international port. Arab, Persian, and Jewish traders have made their homes here for as long as anyone can remember growing rich on the sea trade. It feels permanent. It feels safe. And then Huang Chao's army arrives. The contemporary sources describe a massacre tens of thousands killed in Guangzhou and a huge number of them are foreign merchants, the very communities that had made the city one of the great trading hubs of the world. In a single campaign, generations of cosmopolitan commerce are wiped out. From there, Huang Chao marched north. He crossed the entire length of China down to the southern coast, back up across the Yangtze, then west toward the capitals. Tang's defenses crumbled in front of him. And in 881, he did the unthinkable. He captured Chang'an itself and declared himself the emperor of a brand new dynasty. But he couldn't hold it. Tang forces bolstered once again by foreign cavalry. This time, the Shatuo Turks under a commander named Li Ke'ang counterattacked. By 883, Huang Chao had been driven out of Chang'an. He was finally defeated and killed in 884. But Chang'an never recovered. The city that had been the wonder of the world, the largest, richest, most cosmopolitan city on earth, was gutted. It would never again reach the population or the prestige it had held at its Tang peak. The greatest city of the medieval world had been broken and it stayed broken. And the dynasty that staggered out of the Huang Chao rebellion was barely a dynasty at all. Real power by now was held by a handful of competing warlords. Some had fought on the Tang side during the rebellion, but the man who would end it all had started out on the other side entirely. His name was Zhu Wen. He began as a rebel commander under Huang Chao. But in 882, seeing which way the wind was blowing, he defected to the Tang and was rewarded with military appointments. Over the next two decades, he used those appointments ruthlessly, building his own power base in the northeast, playing rival warlords against each other, and systematically eliminating every competitor. By the early 900s, he was the strongest man in China and the Tang emperor was essentially his hostage. In 903, Zhu Wen moved against the court eunuchs, the faction that had held palace power for a century. He rounded up over 300 of them in a single night and had them slaughtered. The eunuchs, for all their faults, had at least been an internal court faction with some stake in the dynasty's survival. With them gone, there was nothing left between Zhu Wen and total control. In 904, he had the emperor murdered and replaced him with the emperor's 13-year-old son, a child with no power at all. And in 907, Zhu Wen dropped the pretense entirely. He forced that boy to formally abdicate. And with that, the Tang dynasty, 289 years of it, was over. Zhu Wen declared his own dynasty and took the throne. The boy emperor was sent to live under house arrest. And in 908, at the age of 17, he was poisoned by the man who had taken everything from him. There's a terrible symmetry in it. The dynasty had begun with Li Shimin killing his brothers at the Juanwu Gate to seize the throne. It ended with a boy emperor being poisoned by the warlord who seized it from him. Blood at the founding blood at the fall. What came next was called the Five Dynasties and Ten Kingdoms period. 53 more years of fragmentation and competing warlord states, none of them strong enough, to put China back together. That reunification would eventually come in 960 with the Song dynasty. But that's a story for another video. So, the prosecution rests and the picture looks grim. An empire that nearly died after one rebellion. A war that may have killed 30 million people. A century and a half of eunuchs choosing emperor's governors ignoring the throne and a government too broke and too divided to stop a failed exam candidate from sacking the greatest city on earth. If the question is, did the Tang collapse badly? The answer is an emphatic yes. But that's not actually the question is it? The question is whether it was the most powerful. And to answer that, we have to apply the fifth and final measure, the one that outlasts every emperor, every rebellion, and every warlord. We have to ask what the Tang left behind. Here's the thing about measuring an empire, only by how it fell. Every dynasty falls. The Han fell, the Ming fell, the Qing fell. Collapse is the one thing they all have in common. So if collapse disqualified you, there'd be no contenders at all. The real test measure five is what survives the collapse. And by that test, the Tang left behind more than almost any dynasty in Chinese history. Let me show you just how far its fingerprints reach. Start with Japan. At the height of Tang power, Japan sent mission after mission the Kintoshi, the embassies, to Tang China, specifically to study Tang government law, art, and religion, and to carry it all home. The result was Japan's Nara period, which was essentially an attempt to rebuild a version of the Tang on Japanese soil. The city of Nara was modeled directly on Chang'an's grid layout. The Japanese government was reorganized along Tang bureaucratic lines. And the form of Buddhism practiced in the Tang became the dominant form in Japan. An entire civilization remade itself in the Tang's image. Then there's Korea. The unified Silla kingdom, which pulled the Korean peninsula together in the 7th century, had a close relationship with the Tang. Korean scholars studied in Chang'an. Korean officials adopted Tang administrative models. And Tang cultural influence on Korea lasted for centuries beyond the dynasty itself. Remember that Tang Code, the legal masterpiece, Taizong started, and Gaozong finished. It became the template for legal systems across all of East Asia. Japan's Taiho Code of 701 drew directly from it. Vietnam's legal traditions were shaped by it. Korea's legal development was influenced by it. Very few documents in the entire ancient world touched as many separate societies as the Tang Code did. That's not the legacy of a failed state. That's the legacy of a civilizational standard-setter. And the culture this is where the Tang becomes almost untouchable. The Tang period established classical Chinese poetry as a mature art form with a defined canon of giants. Li Bai, the wandering wine-loving romantic, supposedly composing verse, while drunk on moonlit rivers. Du Fu, the other side of the coin watching the empire's suffering with clear, compassionate eyes and writing about war and poverty with an honesty that was almost radical for its time. These two men actually knew each other. They met. They drank together. In the history of literature, that meeting is a little like Add Wang Wei, the painter-poet of solitude and nature, and Bai Juyi after them, and you have a roster of poets that Chinese schoolchildren still memorize today, 1,400 years later. And because the examination system required candidates to compose poetry for a thousand years after the Tang, every single Chinese official had to be literate not just in prose but in verse. The Tang poets set the standard everyone else was measured against for a millennium. There's even a technological legacy that helped reshape the entire world. Block printing carving text into wooden blocks to print multiple copies was developed and commercialized during the Tang. The oldest dated printed book we have, the Diamond Sutra, was printed in the year 868, late in the Tang period. Printing made books cheaper. Cheaper books spread literacy. And that was the first link in a chain that runs all the way to Gutenberg and the information revolutions of the modern world. But here is the single most powerful piece of evidence, and it's the one that, for me, settles the whole trial. It's a name. In Chinese communities all over the world in Southeast Asia, in North America, in Europe, in Australia, millions of overseas Chinese identify themselves with a particular word. Not Han people. Not Chinese in some general sense. They call themselves Tangren, Tang people, and the Chinatowns in cities around the globe. In Chinese, they're called Tangrenjie, the streets of the Tang people. Sit with that for a second. A dynasty that fell in the year 907 that was overrun by rebels, hollowed out by eunuchs, and finally snuffed out by a warlord, poisoning a teenage boy is still embedded 1,100 years later in how millions of people describe who they are? The empire collapsed. The name didn't. The name outlived the catastrophe by over a thousand years. So let's render the verdict. Was the Tang the most powerful dynasty in Chinese history? If most powerful means invincible, then no, it wasn't. It collapsed spectacularly, it bled out tens of millions of lives, and it spent its final century and a half as a shadow of itself. The prosecution's case is real, and we shouldn't pretend otherwise. But most powerful was never supposed to mean never fell. Every dynasty fell. The real question is the total weight of what an empire was and what it left behind. And when you add it all up the peak that outshone every other city and state on earth, the legal code that other nations copied, wholesale the poetry that became the standard for a thousand years, the printing that helped lead to the modern world, and a name that millions still carry today, no Chinese dynasty pressed itself so deeply into East Asia and into the very identity of the Chinese people as the Tang did. A dynasty that ended in 907 and whose name is still spoken with pride today. That's what a dynasty looks like when it gets enough of the big things right, that even its fall can't erase it. So that's my verdict. But you're the judge here, remember? Maybe you think the Han, which laid the foundation, deserves the crown. Maybe the Ming with its fleet and its forbidden city. Maybe the Qing, the largest of them all. Tell me in the comments which dynasty you'd put at the top and why I genuinely want to read the arguments. If this was worth your time, hit the like button, it really does help the channel. Subscribe if you want more history done this way. And let me know which Chinese dynasty you want me to put on trial next, the Han, the Song, the Ming, or the Qing. I'll see you in the next one.