The Han Dynasty (202-8 years ago, 25-220 years ago) was divided into the Western Han Dynasty and the Eastern Han Dynasty. It was a unified dynasty after the Qin Dynasty, and 29 emperors enjoyed the country for 405 years. The Han dynasty was called Liu Han because of its virtue of advocating fire, and also because of the royal surname Liu. In 206 BC, Liu Bang was named Hanwang. In 202 BC, the Western Han Dynasty was established, with Chang 'an as its capital. At the beginning of Han Dynasty, after the rebellion between Wang and Zhu Lu was put down, the political situation tended to be stable. Emperor Wen of Han and Emperor Jing of Han successively recuperated and created the rule of Wenjing. After Emperor Wudi ascended the throne, it was called the prosperous time of Hanwu. By Zhao Xuanshi, the national strength of the Western Han Dynasty reached its peak, and it was called Zhao Xuan Zhongxing. In 8 AD, Wang Mang usurped the Han Dynasty and the Western Han Dynasty perished. Soon, the Red Eyebrow Uprising in Greenwood broke out, and in 23 AD, Xinmang was destroyed again. In AD 25, Liu Xiu proclaimed himself emperor, established the Eastern Han Dynasty, made Luoyang its capital, established the national policy of sharing interest with the people, and initiated the military revival. Emperor Han and he began to rule the right by following the frivolous and thin fu. After Emperor Han and he succeeded to the throne, the eternal prosperity was opened, and the national strength of the Eastern Han Dynasty reached its peak. In the middle and late period, there were disputes between officials and parties. In 184, the yellow turban insurrectionary broke out. Although civil strife was eliminated, it led to local self-esteem. After Dong Zhuo's rebellion, the Eastern Han Dynasty existed in name only. In 220 AD, Cao Pi usurped the Han Dynasty and the Eastern Han Dynasty perished.