Sanguo (Three Kingdoms; ad 220–280)
By the end of the 2nd century ad the Han empire had virtually ceased to exist. The repression of the Daoist rebellions of the Yellow Turbans and related sects marked the beginning of a period of unbridled warlordism and political chaos, from which three independent centres of political power emerged. In the north all authority had passed into the hands of the generalissimo and “protector of the dynasty,” Cao Cao; in ad 220 the last puppet emperor of the Han officially ceded the throne to Cao Cao’s son, who thereby became the legitimate heir of the empire and the first ruler of the Wei dynasty. Soon afterward, two competing military leaders proclaimed themselves emperor, one in the far interior (Shu-Han dynasty, in the present-day Sichuan province) and one in the south, behind the formidable barrier of the Yangtze River (the empire of Wu, with its capital at Jianye, present-day Nanjing). The short and turbulent period of these “Three Kingdoms” (Sanguo), filled with bloody warfare and diplomatic intrigue, has ever since been glorified in Chinese historical fiction as an age of chivalry and individual heroism.
In fact, even Wei, the strongest of the three, hardly represented any real political power. The great socioeconomic changes that had started in the Dong (Eastern) Han period had transformed the structure of society to such an extent that all attempts to reestablish the centralized bureaucratic state—the ideal of the Qin and Han dynasties—were doomed to failure. While central authority declined, the great families—aristocratic clans of large landowners—survived the decades of civil war on their fortified estates under the protection of their private armies of serfs and clients and even increased their power. These conditions were to remain characteristic of medieval China. The Han system of recruiting officials on the basis of talent was replaced by a network of personal relations and patronage. The hierarchy of state officials and government institutions was never abolished, but it became monopolized by a few aristocratic clans who filled the highest offices with their own members and the minor posts with their clients.
Wei succeeded in conquering Shu-Han in 263/264, but two years later a general of the dominant Sima clan overthrew the house of Wei (265/266) and in 265 founded the first of two dynasties under the name Jin: the Xi (Western) Jin. Wu, however, was able to maintain itself until 280, when it was overrun by the Jin armies.
The role of Wu was extremely important: it marked the beginning of the progressive Sinicization of the region south of the Yangtze River, which before that time had been a frontier area inhabited mainly by non-Chinese tribal peoples. The rise of Jianye (renamed Jiankang during Jin times) as a great administrative and cultural centre on the lower Yangtze paved the way for future developments: after the north was lost to barbarian invaders (311), it was to become the capital of Chinese successor states and an important locus of Chinese culture for more than 250 years.