the Han dynasty (22-22 BC) was a unified dynasty after the Qin dynasty, which was divided into two periods: the western Han dynasty and the eastern Han dynasty. It lasted for 29 emperors and enjoyed the country for 45 years. The Han dynasty was called Yan Han because of its virtue of respecting fire, and Liu Han because of the royal family's surname Liu.

There was chaos in the world at the end of the Qin Dynasty. After overthrowing the Qin Dynasty, Liu Bang was named Hanwang. After the victory of the Chu-Han dispute, he claimed to be the emperor and established the Western Han Dynasty. At the beginning of the Han Dynasty, the political situation became stable after the rebellion of the king with different surnames and Zhu Lv was eliminated. Emperor Wen of Han Dynasty and Emperor Jing of Han Dynasty took health care to create the rule of cultural scene. After Emperor Wu of Han Dynasty ascended the throne, he was called the prosperous time of Hanwu. By the time of Emperor Xuandi of Han Dynasty, the national strength reached its peak, which was called filial piety and rejuvenation in history. In 8 years, Wang Mang usurped the Han Dynasty, and the Western Han Dynasty perished, and soon the Greenwood Red Eyebrow Uprising broke out. In 25 years, Liu Xiu proclaimed himself emperor, established the Eastern Han Dynasty, and made Luoyang its capital. After unifying the world, he stopped fighting and supported the people, which is known as Guangxu Zhongxing in history. Emperor Hanming and Emperor Hanzhang started the rule of Mingzhang by following the frivolous and thin fu, and after Emperor Hanhe succeeded to the throne, they started the eternal prosperity, and the national strength of the Eastern Han Dynasty reached its peak. In the mid-term, there was a dispute between the Qi and the official and the party was blocked. In 184, the Yellow Scarf Uprising broke out. Although the civil unrest was wiped out, it led to local self-respect. After Dong Zhuo's rebellion, the Eastern Han Dynasty existed in name only. Cao Pi usurped the Han Dynasty in 22. After the demise of the Eastern Han Dynasty, Liu Bei established Shu Han to continue the Han Dynasty, and China entered the Three Kingdoms period.