Liu Bang, Emperor Wu of the Han Dynasty, established the Western Han Dynasty, with Chang 'an as its capital, also known as the former Han Dynasty; Later historians did not recognize the legitimacy of the New Dynasty and the Xuanhan Dynasty, so they generally incorporated them into the history of the Han Dynasty. Liu Xiu, Emperor Guangwu of Han Dynasty, established the Eastern Han Dynasty, with Luoyang as its capital, calling himself Middle Han, also known as the later Han Dynasty; Liu Bei, Emperor Zhaolie of the Han Dynasty, established Shu Han with its capital in Chengdu, calling himself Han Ji, also known as Xishu; The Western Han Dynasty and the Eastern Han Dynasty are collectively referred to as the Han Dynasty.
In 206 BC, Liu Bang sealed Hanwang, and then Chu and Han contended and won the establishment of the Western Han Dynasty. At the beginning of Han Dynasty, after the rebellion of King Zhao 'an and Zhu Lu was eliminated, 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 the time Emperor Xuandi of Han Dynasty, the national strength reached its peak, which was called filial piety.
In 8 AD, Wang Mang usurped the Han Dynasty, the Western Han Dynasty perished, and an uprising broke out soon. In AD 25, Liu Xiu proclaimed himself emperor, established the Eastern Han Dynasty, made Luoyang its capital, unified the world, retired troops to support the people, and started a prosperous military.
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. There was a struggle between officials in the middle and late period, and the Yellow Scarf Uprising broke out in A.D. 184. Although the rebellion was wiped out, it led to local self-respect. 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.
The Han Dynasty and the Peace Treaty were the most advanced civilization and the most powerful empire in the world at that time. With the unification of culture and the development of science and technology, the Han cultural circle represented by Confucian culture was formally established, and the Chinese nation was gradually called the Han nation after the Han Dynasty.
References:
Baidu encyclopedia entry? Han Dynasty