The Tang Dynasty: China's Golden Age of Civilization

Introduction

Few dynasties in the long sweep of Chinese history have cast as luminous a shadow as the Tang. Spanning nearly three centuries from 618 to 907 CE, the Tang Dynasty represented the apex of Chinese imperial civilization -- a period of breathtaking territorial expansion, cosmopolitan cultural exchange, technological ingenuity, and artistic brilliance that defined the contours of Chinese identity for all the centuries that followed. To speak of the Tang is to speak of the world's largest city, the greatest poets in the Chinese language, a religious tolerance that welcomed Arabs, Persians, Nestorian Christians, and Zoroastrians through the gates of the same capital, an examination system that recruited talent from across the social spectrum, and a military reach that extended from the forests of Korea to the edge of the Iranian plateau.

The Tang left so enduring a mark that ethnic Chinese communities around the world are still called "Tang people" -- Tangren -- a testament to the degree to which this dynasty became synonymous with Chinese civilization itself. Its capital, Chang'an, drew merchants, scholars, monks, envoys, and adventurers from every corner of the known world. Its poets gave voice to the full range of human experience in verse so exquisite that their lines are still memorized by Chinese schoolchildren today. Its Buddhist monks traveled thousands of miles across desert and mountain to bring sacred texts back from India. Its potters developed the brilliant three-color glazed ceramics known as Tang Sancai that still dazzle museum visitors across the globe. And its printers produced the world's oldest surviving printed book.

Yet the Tang was also a dynasty of catastrophic violence, political treachery, and devastating civil war. It was founded through rebellion and fratricidal bloodshed. Its greatest cultural flowering was ended by a military uprising that killed tens of millions of people. It survived only with the help of foreign armies, and it spent its last decades watching regional warlords tear apart the empire that earlier emperors had built with such care. The story of the Tang is inseparable from these contrasts -- the sublime and the catastrophic existing side by side, each making the other more vivid by comparison.

To understand the Tang Dynasty is to understand a pivotal chapter not just in Chinese history but in the history of all of East Asia -- and, through the Silk Road connections that the Tang nurtured and defended, in the history of the world.

The Preceding Sui Dynasty: Grandeur and Ruin

The Tang did not emerge from a vacuum. It arose from the ruins of the Sui Dynasty (581-618 CE), one of the most spectacular cases of a dynasty that achieved enormous things and destroyed itself in the process. The Sui was founded by Emperor Wen (Yang Jian), who reunified China after three and a half centuries of division following the fall of the Han Dynasty. This achievement alone was remarkable. But it was under Emperor Wen's son and successor, the infamous Emperor Yang (Yang Guang, r. 604-618 CE), that the Sui drove itself to collapse.

Emperor Yang was a man of grandiose vision and catastrophic judgment. He launched a series of enormous public works projects that transformed China's infrastructure but exhausted its people. The most celebrated was the Grand Canal -- an extraordinary feat of engineering that linked the Yellow River basin in the north with the Yangtze River basin in the south, connecting the grain-rich south to the politically dominant north and creating a commercial and military artery that would serve China for more than a millennium. Sections of the Great Wall were also extended and reinforced under his reign, and he built a new eastern capital at Luoyang on a scale of imperial grandeur.

All of these projects required staggering quantities of forced labor. Conscripted workers died by the hundreds of thousands digging canals and hauling stone. Emperor Yang also launched three ruinously costly military campaigns against the Korean kingdom of Goguryeo between 612 and 614 CE. Each campaign ended in humiliating failure, the last two because the emperor refused to accept the strategic advice of his generals. The human cost was devastating -- millions of soldiers were mobilized and hundreds of thousands died in the field or on the march. The financial cost was equally ruinous.

By the second decade of the seventh century, popular rebellions were erupting across the empire. Peasants who had been crushed by taxes and forced labor rose in revolt. Local aristocrats who had been passed over for positions in favor of the emperor's favorites saw their opportunity. Military commanders whose careers had been wrecked by the failed Korean campaigns harbored bitter grievances. Emperor Yang, facing the collapse of his empire, retreated to the south. He was strangled by his own disaffected officers in 618 CE.

The legacy of the Sui, however, was not purely negative. The Grand Canal proved to be one of the most consequential pieces of infrastructure in Chinese history -- and the Tang Dynasty would benefit enormously from it. The examination system that the Sui had developed to recruit civil servants on the basis of merit rather than aristocratic birth was another institution the Tang would inherit and expand. In a very real sense, the Sui did the difficult work of reunification and infrastructure-building, and the Tang harvested the results.

The Founding of the Tang Dynasty: LI Yuan and a New Order

Among the many regional commanders and aristocratic lords who rose against the Sui was Li Yuan (566-635 CE), who held the post of governor of Taiyuan in the north. Li Yuan came from a family of mixed ancestry -- the Li clan was of partly Chinese and partly Turkic or Xianbei aristocratic background, typical of the northwestern Chinese elite of this period, whose centuries of contact with the peoples of the steppe had produced a cultural and genetic blending that shaped the ruling classes of the Sui and Tang alike. Li Yuan himself had served the Sui loyally for years and was a cousin of Emperor Yang through the female line.

The circumstances of Li Yuan's rebellion are a matter of historical debate. Traditional accounts, shaped in part by the political interests of his son Li Shimin, suggest that Li Yuan was reluctant to rebel and was essentially pushed into it by his more ambitious son. Modern historians tend to view this as propaganda that served Li Shimin's later need to justify his own seizure of power. What is clear is that Li Yuan moved decisively once the decision was made. In 617 CE, he raised troops in Taiyuan, allied himself with Eastern Turkic leaders to secure his northern flank, marched south to the Sui capital of Chang'an, and captured the city at the end of that year.

Li Yuan placed a puppet child emperor on the throne briefly, then formally took power himself in 618 CE, declaring the founding of the Tang Dynasty. He became known by his temple name Gaozu, meaning "High Ancestor," and he set about the difficult work of consolidating power across an empire still ravaged by rebellion and civil war. By 624 CE, the most significant rebel factions had been defeated and the Tang held firm control over the Chinese heartland.

Li Yuan was a capable ruler, but history has been somewhat unkind to him, largely because his reign was so thoroughly overshadowed by what came next. He established the basic institutions of the new dynasty, maintained the examination system, reformed the currency, redistributed land to stabilize the peasant economy, and set up the administrative framework that would endure for decades. But within a decade of founding the dynasty, he found himself pushed aside by his own son.

Emperor Taizong and the Xuanwu Gate Incident: Seizing Power

The story of Li Shimin's rise to power is one of the most dramatic episodes in Chinese dynastic history. Li Yuan had several sons, and by the late 610s and early 620s it was clear that the most capable of them by far was his second son, Li Shimin (598-649 CE). Li Shimin had been essential to the success of the dynasty's military campaigns -- he was a brilliant cavalry commander who had led many of the key victories that defeated the Sui's rivals. His military achievements had made him immensely popular and had given him a network of loyal generals and advisors. This made him a threat to his brothers, particularly the eldest, Li Jiancheng, who had been designated Crown Prince and who stood to inherit the throne.

A vicious factional struggle developed within the imperial family. Li Jiancheng and his ally, another brother named Li Yuanji, worked to undermine Li Shimin's position -- having his key supporters demoted, accusing him of disloyalty before their father, and apparently plotting his death. In June 626 CE, Li Shimin struck first in an ambush that has gone down in history as the Xuanwu Gate Incident. At the Northern Gate of the imperial palace in Chang'an, he and his followers killed both Li Jiancheng and Li Yuanji. The survivors of their factions were also eliminated. Li Yuan, faced with this fait accompli, abdicated in favor of his surviving son two months later. He lived another eight years in comfortable retirement, but never wielded real power again.

The Xuanwu Gate Incident was an act of political murder committed by a man who would become celebrated as one of the greatest rulers in Chinese history. This is one of the profound ironies of the Tang legacy. Li Shimin had killed his brothers and forced his father's abdication, yet his reign, known by the era name Zhenguan (627-649 CE), was celebrated by all subsequent Chinese dynasties as a model of enlightened governance. The contradiction was never fully resolved in the historical record -- later Chinese historians and officials would hold up the Zhenguan reign as an ideal while quietly acknowledging the brutal means by which it came about.

The Zhenguan Reign: the Model of Good Government

Emperor Taizong, as Li Shimin is known by his temple name, was a ruler of remarkable ability and genuine self-reflection. He assembled around himself a group of extraordinarily capable officials and advisors, most notably Wei Zheng (580-643 CE), a former supporter of Crown Prince Jiancheng who had transferred his loyalty to Taizong after the Xuanwu Gate Incident. Wei Zheng became famous for his willingness to criticize the emperor directly, and Taizong, remarkably, listened.

In one famous exchange, Taizong asked Wei Zheng what made the difference between a wise ruler and a foolish one. Wei Zheng replied that a wise ruler listened to many different viewpoints while a foolish ruler listened only to voices that agreed with him. Taizong took this lesson to heart. He regularly consulted his officials, asked for written memoranda criticizing his policies, and genuinely modified his behavior in response. He reduced the burden of taxation on the peasantry, scaled back labor corvee requirements, and focused on rebuilding the agricultural base that had been devastated by the collapse of the Sui. The population began to recover and the economy grew steadily.

Taizong also continued to develop the examination system for recruiting civil servants. The Tang examination system was not fully meritocratic in the way that the later Song Dynasty system would become -- aristocratic connections still mattered enormously, and the examinations themselves were so difficult to pass that they remained largely the preserve of those with the resources to study for years. But the system did create an official pathway for talent to rise on the basis of intellectual achievement, and it represented an important counterweight to purely hereditary privilege.

Under Taizong's reign, the Tang also began the process of compiling the Sui Shu -- the official history of the Sui Dynasty -- and undertook other major scholarly projects that established the intellectual culture of the dynasty. Taizong was himself a genuine scholar, a calligrapher of note, and a patron of the arts. He collected manuscripts and paintings, promoted literary composition at court, and sponsored the Buddhist monk Xuanzang's monumental translation work. The Zhenguan era was so celebrated precisely because it combined effective governance with cultural achievement -- a ruler who was both a successful military commander and a man of letters, both decisive and open to counsel. For all subsequent Chinese dynasties, the Zhenguan model became the standard against which good governance was measured.

Territorial Expansion: the Tang at the Height of Its Power

Under Emperor Taizong and his successors, the Tang Dynasty extended its control over an enormous swath of territory that dwarfed any previous Chinese empire. At its greatest extent in the late seventh century, Tang authority reached from the forests of Manchuria and the mountains of Korea in the east to the oases of Central Asia in the west, from the grasslands of Mongolia in the north to the jungles of Vietnam in the south.

The most dramatic early military achievements were against the Turkic peoples to the north and northwest. The Eastern Turkic Khaganate, which had been a menacing power on China's northern frontier and had exacted tribute from the early Tang, was defeated in 630 CE after a combination of military pressure and the exploitation of internal divisions within the Turkic confederation. The Eastern Turkic Khan submitted to Emperor Taizong, who was celebrated by the Turkic chieftains with the extraordinary honor of the title "Heavenly Qaghan" -- a recognition by the steppe peoples that the Tang emperor was not merely the ruler of China but the paramount lord of the nomadic world as well. This dual legitimacy, as both Chinese Son of Heaven and steppe overlord, was one of the most remarkable features of early Tang power.

The campaign against the Western Turkic Khaganate was more drawn out. Tang armies conducted a series of campaigns in Central Asia from the 640s through the late 650s. The Western Turkic confederation was decisively broken between 657 and 659 CE, and Tang authority was extended into the Tarim Basin and the oasis cities of the Silk Road -- cities like Kashgar, Khotan, Kucha, and Turfan that were crucial nodes in the transcontinental trade network connecting China with the Middle East, Central Asia, and ultimately the Mediterranean world.

This control of the Silk Road was of enormous economic and cultural significance. The Tang established the Protectorate of the Western Regions (Anxi Duhufu) to administer these territories, and Chinese influence radiated outward along the trade routes. Silk, porcelain, tea, and paper flowed westward; glass, textiles, horses, and cultural influences flowed east. The movement of goods was matched by the movement of people -- merchants, monks, artists, musicians, and diplomats traveled the Silk Road, making Chang'an one of the most cosmopolitan cities on earth.

Tang military power was also projected southward into Vietnam, which remained under direct Tang administration, and eastward into Korea, where the Tang allied with the Silla kingdom to defeat the rival kingdoms of Baekje and Goguryeo. The conquest of Baekje in 660 CE and Goguryeo in 668 CE brought the entire Korean peninsula into the Tang sphere of influence, though the Silla kingdom proved too vigorous to be reduced to mere vassalage and gradually pushed Tang forces back, unifying Korea under its own rule by 676 CE.

The Battle of Talas and the Limits of Tang Expansion

The westward expansion of Tang power was brought to a decisive halt at the Battle of Talas River in 751 CE -- one of the most consequential military engagements in Asian history. In the decades after the defeat of the Western Turkic Khaganate, Tang military governors had continued to push influence westward into the Ferghana Valley and beyond, coming into increasing contact and conflict with the expanding Abbasid Caliphate, which had replaced the Umayyad Caliphate in 750 CE and represented the most dynamic military power of the Islamic world.

A Tang army commanded by General Gao Xianzhi marched westward in 751 CE but was met by a large Arab-led force near the Talas River in what is today the border region of modern Kazakhstan and Kyrgyzstan. After several days of fighting, Gao Xianzhi's Karluk Turkic allies switched sides and attacked the Tang forces from behind. The Tang army was destroyed, and the general barely escaped with his life.

The Battle of Talas had immediate and long-term consequences. In the immediate term, it ended Tang military expansion into Central Asia. The disaster was followed almost immediately by the An Lushan Rebellion (which began in 755 CE), which convulsed the Tang Empire and led to the withdrawal of Tang forces from the Western Regions permanently. The oasis cities of the Silk Road passed out of Chinese control.

But the Battle of Talas had a consequence that its participants could not have foreseen. Among the Chinese prisoners taken by the Arab forces were craftsmen who knew the technology of papermaking -- a Chinese invention that had not yet spread to the Islamic world. These prisoners, working in Samarkand and elsewhere in Central Asia, passed on the techniques of papermaking to their captors. Within decades, paper mills were operating across the Islamic world, and from there papermaking technology spread to medieval Europe. The Battle of Talas thus became one of the pivotal moments in the global history of technology -- an Arab military victory over China that inadvertently transmitted to the world one of China's most important inventions.

Empress Wu Zetian: the Only Female Emperor in Chinese History

Among all the remarkable figures of the Tang Dynasty, none is more extraordinary -- or more controversial -- than Wu Zetian (624-705 CE). She is the only woman in more than two thousand years of Chinese imperial history to have ruled as emperor in her own name, and her story encompasses both genuine political achievement and ruthless political calculation.

Wu Zetian entered the imperial palace at the age of fourteen as a concubine of Emperor Taizong. She was known for her intelligence and literary talent but had no particular political prominence during Taizong's lifetime. After Taizong died in 649 CE, she became deeply involved with his son and successor, Emperor Gaozong (r. 649-683 CE). This relationship, which began while Gaozong was still crown prince, was controversial by the standards of Chinese court morality. Yet Gaozong made her his empress in 655 CE, displacing the existing Empress Wang.

As Empress, Wu Zetian gradually accumulated power, particularly as Emperor Gaozong's health declined in his later years. After Gaozong's death in 683 CE, she served as regent for two of her sons -- Emperor Zhongzong and Emperor Ruizong -- deposing and exiling both when they showed signs of attempting to rule independently. In 690 CE, she took the decisive step of proclaiming herself emperor and establishing a new dynasty, which she named the Zhou. This made her the sole regnant emperor of China -- not empress consort, not regent, but emperor in her own right, with all the ritual and political authority that entailed.

Wu Zetian's methods of consolidating power were often brutal. She created a network of informers and used accusations of treason to eliminate political enemies. High officials who stood in her way were disgraced, executed, or driven to suicide. Yet her reign also produced significant achievements. She continued and expanded the civil service examination system, opening it to a somewhat broader pool of candidates and using it more aggressively to recruit talent independent of the old aristocratic families. She was an active patron of Buddhism, commissioning major Buddhist texts and sculptures, and the famous Longmen Grottoes near Luoyang reached their greatest development under her patronage. The empire was effectively administered during her reign and Tang military power was largely maintained.

Wu Zetian was compelled to abdicate in 705 CE, when a palace coup restored her son Emperor Zhongzong to the throne. She died later that year at the age of eighty-one. In her will, she asked to be buried with a blank epitaph -- no inscription -- perhaps acknowledging that posterity's verdict on her reign was something she could not control. For centuries, Chinese historians debated whether she was a brilliant ruler or a monstrous usurper. Modern historians tend to treat her more evenhandedly, recognizing both her genuine achievements and the violence through which she achieved and maintained power.

The Tang Code: a Legal Legacy Across East Asia

Among the Tang Dynasty's most significant contributions to Chinese and East Asian civilization was its comprehensive legal code, known as the Tanglü shuyi -- the Tang Code with Commentary -- completed in 653 CE during the reign of Emperor Gaozong. This document was not merely a code of laws but a masterpiece of legal scholarship -- a systematic compilation of laws covering criminal penalties, administrative procedures, family relations, property rights, and ritual obligations, accompanied by detailed official commentary explaining the rationale behind each provision.

The Tang Code represented the culmination of centuries of Chinese legal development and became the foundational legal document for all subsequent Chinese dynasties. Its influence extended far beyond China's borders. The legal systems of Japan, Korea, and Vietnam were all modeled substantially on the Tang Code, reflecting the broader cultural influence of the Tang throughout East Asia. When Japanese scholars and statesmen of the Nara and Heian periods deliberately modeled their institutions on Tang precedents, it was the Tang Code that provided the template for Japanese law. The Korean kingdoms similarly adopted Tang legal principles. In this sense, the Tang Code ranks among the most influential legal texts in Asian history -- a document whose reach extended to shape the legal cultures of entire civilizations for centuries.

The Examination System and Tang Governance

One of the most enduring institutional contributions of the Tang Dynasty was the development and expansion of the civil service examination system. While the concept of using examinations to recruit officials had roots in the Han Dynasty and had been formalized under the Sui, it was during the Tang that the system took on its characteristic shape and began to play a major role in defining Chinese bureaucratic culture.

The Tang examination system consisted of multiple levels and types of examination, covering subjects including classical literature, poetry composition, legal reasoning, and practical governance. The most prestigious examination was the jinshi degree -- meaning "presented scholar" -- which required a deep mastery of classical texts, sophisticated literary composition, and the ability to write poetry of high quality. The examinations were administered by the central government and were theoretically open to any freeborn male Chinese subject, though in practice the years of intensive study required meant that only those from families with sufficient resources could realistically compete.

The system was never fully meritocratic in the modern sense. Aristocratic families retained enormous advantages through their access to education, their networks of patronage, and their ability to place candidates in the most prestigious academies. But the examinations did create a genuine pathway for talent to rise, and over the course of the Tang and into the subsequent Song Dynasty, the examination system gradually eroded the power of the old hereditary aristocracy by creating a class of examination-qualified officials who derived their status from intellectual achievement rather than birth alone. Emperor Xuanzong, who reigned in the eighth century and presided over the cultural height of the Tang, established the Hanlin Academy -- a prestigious institution that brought the most talented scholars and literary figures into direct service at the imperial court. The Hanlin Academy became one of the most important intellectual institutions in Chinese history, serving as a think tank, a secretariat, and a center of literary production under the direct patronage of the emperor.

The Reign of Emperor Xuanzong: the Brilliant Emperor and the Peak of Tang Culture

If the Zhenguan reign of Emperor Taizong represented the political ideal of the Tang Dynasty, then the reign of Emperor Xuanzong (r. 712-756 CE) -- known by the honorific "Xuanzong the Brilliant" or the "Brilliant Emperor" (Minghuang) -- represented its cultural apex. The forty-four years of Xuanzong's active rule before the great catastrophe of 755 CE constituted arguably the most glorious era in the history of Chinese civilization, a period when every art form reached its peak and the imperial court at Chang'an became the cultural epicenter of the entire known world.

Xuanzong came to power after a period of intense court intrigue following the abdication of Wu Zetian. His early reign was marked by the same qualities that had distinguished Taizong's governance -- careful administration, a willingness to work with capable ministers, attention to the welfare of the common people, and fiscal discipline. He appointed one of the greatest administrators in Tang history, Yao Chong, as chief minister, and together they stabilized the empire after the turbulence of the preceding decades. Under Xuanzong's early rule, the population grew, agricultural production increased, and the revenues of the state expanded steadily.

But Xuanzong was more than an administrator. He was a passionate devotee of the arts -- himself an accomplished musician who is credited with founding China's first imperial music academy, known as the Pear Garden (Liyuan), an institution that trained court musicians and actors and became the legendary ancestor of the Chinese theatrical tradition. He was deeply interested in Taoism and supported Taoist scholarship alongside Buddhism. He corresponded with poets, patronized painters, and transformed the Tang court into the most brilliant center of cultural life in the world.

Under Xuanzong's patronage, Chang'an became home to the two greatest poets in the Chinese literary tradition -- Li Bai and Du Fu -- along with dozens of other major literary figures. The court sponsored literary competitions, and poets from across the empire competed for imperial favor. The resulting explosion of poetic creativity produced a body of literature -- the poems of the Tang -- that remains the most celebrated corpus of verse in the entire Chinese literary canon. The famous anthology known as the Three Hundred Tang Poems, compiled in the eighteenth century, is still the most widely read collection of classical Chinese poetry.

Xuanzong's reign also witnessed major developments in Chinese painting, music, and Buddhist sculpture. The famous frescoes of the Mogao Caves at Dunhuang -- a UNESCO World Heritage Site -- reached their greatest elaboration during the Tang period, and many of the most celebrated works there date to the Xuanzong era. Chinese music absorbed influences from Central Asia, Persia, and India along the Silk Road, and the cosmopolitan court of Chang'an rang with the sounds of instruments from across the world.

Yang Guifei: Love, Beauty, and Political Catastrophe

The story of Xuanzong's reign cannot be told without the story of Yang Guifei -- Consort Yang, whose Chinese name means "precious consort" -- one of the four great beauties of Chinese tradition and the woman whose relationship with the emperor became one of the most celebrated and tragic love stories in Chinese literary history.

Yang Guifei (719-756 CE) entered the imperial court originally as the consort of one of Xuanzong's sons. In a scandal that echoed the earlier relationship between Wu Zetian and Emperor Gaozong, Xuanzong became infatuated with his son's consort and eventually, after arranging for her to become a Taoist nun as a fig leaf of propriety, took her into his own household around 740 CE. She quickly became his favorite consort and companion, and her influence over the aging emperor grew steadily through the following decade.

Under Yang Guifei's influence, her family members received rapid promotion and extraordinary privileges. Her cousin Yang Guozhong rose to become one of the most powerful officials at court despite being widely regarded as corrupt and incompetent. The circle around Yang Guifei competed for the emperor's favor and blocked access to those who might have given him more honest counsel. Xuanzong, who had once been noted for his willingness to hear criticism, became increasingly isolated in the pleasures of the court and increasingly dependent on favorites.

This context is essential for understanding how the disaster of 755 CE came to pass.

The an Lushan Rebellion: the Catastrophe That Shattered the Tang

The An Lushan Rebellion (755-763 CE) was the most catastrophic event in the history of the Tang Dynasty -- and one of the deadliest conflicts in all of human history to that point. It erupted in December 755 CE when the military governor An Lushan, commanding enormous forces in the northeast, declared himself emperor of a new dynasty he called Yan and launched a military campaign against the Tang court.

An Lushan was a man of Sogdian-Turkic background who had risen through the Tang military system by a combination of genuine martial ability, flattery, and political acumen. He had cultivated close relationships with Emperor Xuanzong and even with Yang Guifei -- in an extraordinary piece of court theater, Yang Guifei had performed a public ceremony "adopting" An Lushan as her son, a gesture that symbolized his favor at court despite the fact that he was several years her senior. An Lushan had meanwhile been accumulating enormous military resources under his control as governor of three northeastern provinces, commanding forces that may have numbered over 150,000 troops.

The trigger for the rebellion is debated by historians. An Lushan likely feared that his enemies at court -- particularly Yang Guozhong, Yang Guifei's corrupt cousin -- were maneuvering to destroy him. The rebellion may have been partly defensive in motivation, though its scale and the speed with which An Lushan moved to proclaim himself emperor suggest that long-term ambition played a significant role as well.

The rebels' military success was immediate and devastating. An Lushan's forces swept westward, capturing the eastern capital Luoyang within weeks. Emperor Xuanzong, receiving increasingly catastrophic reports, initially refused to believe in the seriousness of the situation -- years of comfort and flattery had eroded both his grasp of military reality and his capacity for decisive action. By the summer of 756 CE, the rebels had pushed through the Tong Pass, the great strategic gateway that protected Chang'an from the northeast, and the capital was no longer defensible.

Xuanzong fled westward with his court and a military escort. The flight became a nightmare. At a post station called Mawei, about sixty kilometers west of Chang'an, the soldiers of the escort -- hungry, exhausted, and furious at the Yang family whom they blamed for the disaster -- mutinied. They killed Yang Guozhong, then demanded the death of Yang Guifei. Xuanzong, presented with the choice between his favorite consort and his own survival, was forced to order her execution. According to the sources, she was strangled with a silk scarf. The event was commemorated in one of the greatest poems of Chinese literature -- "Song of Everlasting Regret" (Changhen Ge) by the poet Bai Juyi -- which immortalized the story of the emperor's love and loss.

An Lushan himself did not live to see the conclusion of the rebellion he had started. He was murdered by his own son in 757 CE, and the leadership of the rebellion passed through several hands before the Tang finally suppressed it in 763 CE. The suppression was achieved only with the indispensable assistance of the Uyghur Turkic Khaganate -- an ally whose help came at the price of allowing the Uyghurs to sack and loot Luoyang after its recapture, a humiliation that underlined how far the Tang had fallen from the days when it had been the paramount power of Asia.

The human cost of the An Lushan Rebellion was staggering. The census records of the Tang show that the registered population of the empire declined from approximately 53 million households before the rebellion to around 17 million households afterward -- a decline so dramatic that it suggests many tens of millions of people either died, fled, or disappeared from the tax rolls. Modern demographic estimates suggest that somewhere between 13 million and 36 million people died as a direct or indirect result of the rebellion -- making it one of the deadliest conflicts in human history before the modern era. The economic infrastructure of the northern Chinese heartland was devastated. Cities that had been among the greatest in the world were left in ruins.

The Tang Dynasty never fully recovered. The emperor who restored Tang rule -- Xuanzong's son Emperor Suzong -- did so at the cost of granting enormous power to the military governors (jiedushi) who had helped him reconquer the empire. These regional military commanders became increasingly autonomous in the decades after the rebellion, transforming the Tang Empire from a centralized bureaucratic state into a kind of feudal patchwork in which the imperial government in Chang'an nominally ruled over territories actually controlled by powerful regional strongmen.

LI Bai and Du Fu: the Twin Stars of Chinese Poetry

No account of the Tang Dynasty would be complete without a serious engagement with its greatest poets, for the poetry of the Tang is not merely a cultural ornament to its history -- it is an incomparable window into the human experience of living through both the glories and the catastrophes of this extraordinary era.

Li Bai (701-762 CE) and Du Fu (712-770 CE) are universally regarded as the two supreme poets of the Chinese literary tradition -- figures whose status in Chinese culture is roughly comparable to that of Shakespeare in the English-speaking world, though they wrote in a very different mode and form. The two men knew each other personally, and their friendship is one of the most celebrated literary friendships in Chinese history.

Li Bai was the poet of romantic freedom, of wine, of moonlight on water, of the open road, of Taoist transcendence, and of a kind of magnificent irresponsibility. His verse moves with a kinetic energy and a visionary extravagance that set it apart from anything written before in Chinese literature. He celebrated drinking and friendship with equal enthusiasm, wrote of imaginary journeys to immortal mountains, and brought a kind of cosmic perspective to the pleasures and sorrows of ordinary life. He spent much of his life wandering -- living sometimes at court, sometimes in mountains, sometimes in taverns -- and his poetry reflects this restless, seeking quality.

Born in Central Asia (probably in what is now Kyrgyzstan) and raised in Sichuan, Li Bai had a background that was itself cosmopolitan -- fitting for a poet who became the embodiment of the Tang's openness to the wider world. He was briefly employed at the Hanlin Academy at Emperor Xuanzong's court but proved unsuited to the patient work of a court official and eventually returned to wandering. He died in 762 CE, the year before the An Lushan Rebellion was finally suppressed, having lived through the catastrophe that destroyed the world he had celebrated.

Du Fu was Li Bai's counterpart in almost every meaningful way. Where Li Bai soared, Du Fu watched and grieved. Where Li Bai wrote of transcendence, Du Fu wrote of suffering. Du Fu was the poet of social conscience, of the displaced and the dispossessed, of war's human cost, of the relationship between the individual and the state. He witnessed the An Lushan Rebellion firsthand, was captured briefly by rebels, escaped, and spent the last fifteen years of his life in impoverished wandering through the war-torn empire, writing poems that record with heartbreaking clarity what the rebellion did to ordinary people. His poem "Spring View" -- written in Chang'an while the city was under rebel occupation -- contains the lines that have perhaps been more memorized and quoted by Chinese readers than any others in the literary tradition. Du Fu is often called the "Poet Sage" (Shisheng) in contrast to Li Bai's designation as the "Poet Immortal" (Shixian), and the contrast captures something real about their different relationships to the world.

Together, Li Bai and Du Fu defined what Chinese poetry could be. Their work was collected and transmitted by subsequent generations, and the Three Hundred Tang Poems anthology that became a standard text for the education of Chinese children through the nineteenth and twentieth centuries is dominated by their work and that of their contemporaries. The Tang poetic tradition -- with its precise tonal patterns, its compression of meaning, its use of natural imagery to evoke emotional states, and its cultivation of a kind of luminous suggestiveness -- became the standard against which all subsequent Chinese poetry was measured.

Xuanzang and the Golden Age of Buddhism

The Tang Dynasty was, among many other things, a golden age of Chinese Buddhism. Buddhism had entered China centuries earlier, during the Han Dynasty, and had gradually spread through Chinese society despite periodic imperial ambivalence and occasional persecution. By the Tang period, Buddhism had become deeply embedded in Chinese culture at every level, from the peasant village to the imperial court.

The most celebrated figure of Tang Buddhism was the monk Xuanzang (602-664 CE), whose extraordinary journey to India and back became one of the great adventure stories of medieval Asia and the inspiration for one of the four great classical novels of Chinese literature -- the sixteenth-century work known in English as "Journey to the West" or "Monkey."

Xuanzang was a learned Buddhist monk who became dissatisfied with the quality of the Buddhist texts available in China -- many had been poorly translated or were fragmentary -- and resolved to travel to India himself to collect original Sanskrit scriptures and bring them back. In 629 CE, he left Chang'an without official authorization, traveling west through the Gansu corridor, across the Taklamakan Desert, over the Tian Shan mountains, and through the oasis kingdoms of Central Asia. He reached India after a journey of approximately two years and spent the following decade studying at the great Buddhist university of Nalanda in northeastern India, debating with scholars, and collecting texts.

His return journey was equally arduous. He crossed back over the mountains with a caravan of horses and elephants loaded with Buddhist scriptures and relics, arriving back in Chang'an in 645 CE after an absence of approximately sixteen years. Emperor Taizong, who had initially disapproved of his unauthorized departure, received him with imperial honors and supported his subsequent work translating the texts he had brought back. Xuanzang spent the remaining nineteen years of his life translating Buddhist sutras from Sanskrit into Chinese, producing a body of translation work that profoundly shaped Chinese Buddhist thought.

The account of his journey, written by one of his disciples, became a celebrated text in its own right -- "The Great Tang Records on the Western Regions" -- an invaluable historical source for the geography, politics, and culture of Central Asia and India in the seventh century. And the legendary transformation of his journey into the fantastical tale of "Journey to the West" -- in which the monk is accompanied by the Monkey King Sun Wukong and a cast of magical companions -- represents one of the most creative acts of literary transformation in Chinese cultural history.

Tang Sancai Ceramics and the Arts of the Golden Age

The material culture of the Tang Dynasty left a visual record that is immediately recognizable even to those unfamiliar with Chinese history. Tang Sancai -- literally "three-color" ceramics -- are the lead-glazed pottery figurines and vessels produced during the Tang period, characterized by their vivid glazes in amber, green, and cream-white, applied in swirling patterns that give these objects an almost organic energy. They were produced in large quantities for use as burial goods -- figurines of horses, camels, musicians, dancers, courtiers, foreigners, and fantastical animals placed in the tombs of the wealthy to serve their needs in the afterlife.

The Sancai horses in particular have become iconic images of the Tang era -- powerful animals with arched necks and expressive faces, their glazes capturing something of the energy and movement of the real horses that were so central to Tang military and aristocratic culture. The horses depicted in Tang ceramics often show the influence of the Central Asian breeds -- particularly the "heavenly horses" of Ferghana -- that the Tang imported along the Silk Road and regarded as marks of status and prestige.

Tang ceramics were only one element of a rich artistic culture. Tang painting developed the distinctive style of court figure painting that would influence East Asian art for centuries -- paintings of court ladies, horses, and hunting scenes executed in mineral pigments on silk or paper. Tang Buddhist sculpture, influenced by both Indian and Central Asian traditions absorbed along the Silk Road, produced magnificent works in stone, bronze, and clay that survive in temples and caves across China. The Longmen Grottoes near Luoyang and the Mogao Caves at Dunhuang contain some of the finest examples of Tang Buddhist art.

Music was another Tang art form of great sophistication. The Tang court maintained elaborate music institutions, and the repertoire of Tang court music drew on traditions from Central Asia, India, Korea, and indigenous Chinese sources. The formal court music of the Tang influenced the ritual music of the Japanese imperial court, where it is still preserved today in a tradition known as gagaku.

The Printing Revolution: the Diamond Sutra and the World's Oldest Printed Book

One of the most consequential technological developments of the Tang Dynasty was the widespread adoption and refinement of woodblock printing -- a technique by which text or images carved in relief on a wooden block could be inked and pressed onto paper or cloth to produce multiple identical copies. While the precise origins of woodblock printing in China are debated, it was during the Tang Dynasty that the technique became widespread and began to transform Chinese culture.

The most tangible evidence of Tang-era printing is also one of the most celebrated objects in the history of human civilization. The Diamond Sutra, preserved in the British Library, is the world's oldest surviving printed book bearing a precise date. It was printed on the eleventh day of the fourth moon of the ninth year of the Xiantong era -- corresponding to May 11, 868 CE -- by a man named Wang Jie, who states in a colophon at the end of the scroll that he had it made "for universal free distribution" in order to honor the memory of his parents. The Diamond Sutra is not a short document but a complete Buddhist text approximately sixteen feet long, printed in seven panels of text and a frontispiece illustration with a consistency and quality that makes clear this was not an experimental technology but a well-established craft tradition.

The implications of the printing revolution for Chinese civilization were profound. Prior to printing, texts could be multiplied only through hand-copying, a laborious process that placed severe limits on the circulation of literature, scholarship, and religious teaching. Printing made it possible to produce texts in quantities that hand-copying could never match, at costs that made them accessible to a much wider audience. The great growth of literacy and of the examination culture in the subsequent Song Dynasty was made possible by the printing revolution that the Tang had pioneered.

Buddhism was the primary driver of early printing in China, as it had been the driver of many other cultural developments. The need to produce large numbers of identical copies of sacred texts and images -- both for distribution to the faithful and for the ritual merit associated with copying sutras -- created an enormous demand for exactly the kind of replication that woodblock printing could provide. Buddhist temples and monasteries were among the earliest producers and distributors of printed materials in China.

The Cosmopolitan Capital: Chang'an and the World at Its Gates

At the center of the Tang Empire stood Chang'an -- the name means "Perpetual Peace" -- a city of a scale and cosmopolitan diversity that had no equal in the world during the seventh and eighth centuries CE. Located in the Wei River valley of modern Shaanxi province, on the site of the earlier Han Dynasty capital, Chang'an was laid out on a vast rectangular grid plan covering approximately 84 square kilometers, making it the largest planned city ever built to that point in human history.

At its peak during the Xuanzong era, Chang'an's population has been estimated at approximately one million people within the city walls, with perhaps an additional million in the surrounding suburbs and dependent towns. This made it the largest city in the world at the time, a distinction it held for most of the Tang period. The city was divided into a Northern Palace City, where the emperor and his court resided, a central Administrative City housing the government offices, and a vast residential area divided into neat rectangular wards by a grid of broad avenues. The two great markets -- the Eastern Market and the Western Market -- were bustling commercial centers where goods from across the known world changed hands.

It was in the Western Market above all that the cosmopolitan character of Tang Chang'an was most vividly on display. Here merchants from across the Silk Road world gathered to trade -- Sogdians from the oasis cities of Central Asia, who were the dominant long-distance traders of the early medieval period; Persians who had fled the Arab conquest of their homeland; Arabs from the newly established Abbasid Caliphate; merchants from India, Southeast Asia, and Korea; Jews and Armenians and Nestorian Christians. The streets of the Western Market district were lined with foreign inns, taverns selling grape wine (a beverage introduced to China from Central Asia), and shops stocked with exotic goods from distant lands.

The religious diversity of Tang Chang'an was extraordinary by the standards of any pre-modern city. Buddhism, of course, was the dominant religion of most of the Chinese population and had dozens of magnificent temples in the city. But the Tang government, operating from a position of confident cultural supremacy, also permitted the open practice of a remarkable range of foreign religions within the capital. Zoroastrianism -- the ancient faith of Persia -- had multiple temples in the city, maintained by the Persian merchant community. Nestorian Christianity, a form of Christianity that had spread eastward from Syria along the Silk Road, had an established presence and even produced the famous Nestorian Stele -- a carved stone monument erected in Chang'an in 781 CE that describes in both Chinese and Syriac the history of Nestorian Christianity in China. Manichaeism -- the dualistic religion founded by the prophet Mani -- had a following in Chang'an. Islam, newly arrived from Arabia via the Silk Road, had its earliest Chinese mosque established during the Tang period; the Great Mosque of Xi'an, though later rebuilt, traces its origins to this era.

This religious pluralism was not universal or unconditional -- there were periods of anti-Buddhist policy and restrictions on foreign religions -- but by the standards of the medieval world, the degree of religious tolerance in Tang Chang'an was remarkable. It reflected the self-confidence of a civilization that did not need to fear foreign influences because it had the cultural gravity to absorb and transform them on its own terms.

The foreign presence in Chang'an also shaped Chinese popular culture in ways that became deeply embedded in Chinese civilization. Central Asian music, dances, and musical instruments became fashionable at court and among the urban elite. The lute (pipa) and other Central Asian instruments entered the Chinese musical tradition permanently. Central Asian fashions influenced Tang court dress. The cuisine of Tang Chang'an incorporated ingredients and techniques from across the Silk Road world. Even the games and sports of the Tang aristocracy showed foreign influences -- polo, originally a Persian and Central Asian sport, became enormously popular among the Tang elite and is depicted in numerous Tang paintings and ceramics.

The Influence of the Tang on Neighboring Civilizations

The cultural influence of the Tang Dynasty radiated outward in all directions from Chang'an, shaping the development of neighboring civilizations in ways that proved permanent. Of all these influences, none was more profound than the influence on Japan.

Japan in the seventh and eighth centuries was in the process of constructing a centralized state modeled explicitly on Chinese precedents. Japanese envoys -- the "Tang envoys" (kentoshi) -- made regular voyages to China throughout the Tang period, bringing back not just goods and texts but the knowledge of Chinese institutions, arts, writing, and religion. The Japanese capital at Nara (710-784 CE) was laid out on a grid plan directly modeled on Tang Chang'an, though smaller in scale. The Japanese imperial court adopted Tang-style government structures, Tang legal codes, and Tang bureaucratic practices. The Japanese writing system, though adapted to represent the very different sounds of the Japanese language, was built on the foundation of Chinese characters. Buddhism in Japan reached its classical form under the influence of Tang Chinese Buddhism, and the great temples of Nara -- Todaiji with its enormous bronze Buddha, Horyuji with its ancient wooden structures -- bear witness to the Tang cultural model.

Korea sent students, monks, and envoys to Chang'an in large numbers throughout the Tang period, and Korean civilization of the Unified Silla era (668-935 CE) was deeply influenced by Tang Chinese culture, law, religion, and art. The famous Buddhist monasteries and temples of Korea -- Bulguksa and Seokguram among the most celebrated -- show the deep influence of Tang Buddhist aesthetics. Vietnam, under direct Tang administration for much of the dynasty's reign, was exposed to Chinese culture, writing, and institutions through the mechanism of direct imperial governance -- an exposure that left permanent marks on Vietnamese civilization.

Even in regions further afield, the Tang made its presence felt. Tang coins circulated across the Silk Road world. Tang silk was prized from Korea to the Mediterranean. Tang diplomatic missions reached as far as Persia and the Byzantine Empire. And the news of China's civilization, filtering through the reports of Arab traders and envoys, gave the Tang Dynasty a reputation in the Islamic world as a land of extraordinary wealth and sophistication.

The Collapse of the Tang: the Huang Chao Rebellion and the Five Dynasties

The An Lushan Rebellion had left the Tang Dynasty permanently weakened, but it lingered on for another century and a half in a diminished form. The later Tang was characterized by the increasing power of regional military governors, factional struggles at court between rival eunuch factions and official cliques, and periodic crises that the central government handled with increasing difficulty.

The final blow came from another massive popular uprising -- the Huang Chao Rebellion (875-884 CE). Huang Chao was a salt merchant from Shandong who had failed the imperial examinations and turned to banditry before gathering a massive force of rebels drawn from the peasantry devastated by drought, famine, and heavy taxation. His forces swept across China in movements of almost unimaginable scope -- at one point Huang Chao's army reached as far south as Guangzhou (Canton) on the southern coast before turning back northward. In 881 CE, Huang Chao's forces captured Chang'an and Huang Chao proclaimed himself emperor of a new dynasty.

The Tang court fled. Chang'an was sacked repeatedly in the fighting that followed, and the city that had been the greatest metropolis in the world was reduced to ruins from which it never recovered. Huang Chao was eventually defeated and killed in 884 CE through a combination of Tang military efforts and the treachery of one of his own generals, Zhu Wen, who defected to the Tang cause. But the dynasty never recovered from the devastation. Zhu Wen, who had been rewarded by the Tang for his defection with enormous power and territory, turned against his patrons. In 907 CE, he deposed the last Tang emperor and proclaimed his own dynasty, the Later Liang, inaugurating the period of political fragmentation known as the Five Dynasties and Ten Kingdoms (907-960 CE).

The Tang Dynasty was over after 289 years.

The Legacy of the Tang Dynasty

The legacy of the Tang Dynasty is so vast and so deeply embedded in Chinese civilization that it is difficult to summarize without doing it an injustice. The Tang defined, in ways that all subsequent Chinese dynasties accepted as normative, what the Chinese state should look like, how its government should function, what its literary culture should value, and how it should relate to the world beyond its borders.

The examination system that the Tang expanded and regularized became the dominant mechanism for recruiting officials in all subsequent Chinese dynasties until its abolition in 1905 -- a period of over a thousand years. The legal tradition established in the Tang Code shaped Chinese law for a comparable period. The literary tradition inaugurated by Tang poetry remained the touchstone of Chinese poetic achievement until the modern era. The Buddhist art of the Tang set the aesthetic standards for Chinese Buddhist sculpture and painting for centuries.

The cosmopolitan confidence of the Tang -- its willingness to absorb foreign influences, its openness to foreign peoples and religions, its engagement with the wider world through the Silk Road -- represents one of the most remarkable aspects of this civilization and one of its most important legacies. The Tang demonstrated that Chinese civilization was not a closed or defensive system but one capable of engaging with the world, absorbing what was valuable, and transforming it into something distinctively Chinese.

And then there is the simple fact of the name. "Tang people" -- Tangren -- remains to this day an alternate designation for ethnic Chinese, used in Chinatowns (Tangren jie, literally "streets of Tang people") from San Francisco to Sydney to Amsterdam. No other Chinese dynasty has given its name to the Chinese people in this way. It is the most enduring testimony to the degree to which the Tang Dynasty, in all its brilliance and violence and cosmopolitan grandeur, became synonymous with Chinese civilization itself.

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