The Han dynasty was an imperial dynasty of China (202Â BCÂ â 9Â AD, 25â220Â AD) established by Liu Bang and ruled by the House of Liu. The dynasty was preceded by the short-lived Qin dynasty (221â206Â BC) and a warring interregnum known as the ChuâHan Contention (206â202Â BC), and it was succeeded by the Three Kingdoms period (220â280Â AD). The dynasty was briefly interrupted by the Xin dynasty (9â23Â AD) established by the usurping regent Wang Mang, and is thus separated into two periodsâthe Western Han (202Â BCÂ â 9Â AD) and the Eastern Han (25â220Â AD). Spanning over four centuries, the Han dynasty is considered a golden age in Chinese history, and had a permanent impact on Chinese identity in later periods. The majority ethnic group of modern China refer to themselves as the "Han people" or "Han Chinese". The spoken Chinese and written Chinese are referred to respectively as the "Han language" and "Han characters".
The Han emperor was at the pinnacle of Han society and culture. He presided over the Han government but shared power with both the nobility and the appointed ministers who came largely from the scholarly gentry class. The Han Empire was divided into areas directly controlled by the central government called commanderies, as well as a number of semi-autonomous kingdoms. These kingdoms gradually lost all vestiges of their independence, particularly following the Rebellion of the Seven States. From the reign of Emperor Wu (r.â141â87Â BC) onward, the Chinese court officially sponsored Confucianism in education and court politics, synthesized with the cosmology of later scholars such as Dong Zhongshu.