End of the Han dynasty
The end of the Han dynasty refers to the period of Chinese history from 189 to 220 AD, which roughly coincides with the tumultuous reign of the Han dynasty's last ruler, Emperor Xian. During this period, the country was thrown into turmoil by the Yellow Turban Rebellion (184–205). Meanwhile, the Han Empire's institutions were destroyed by the warlord Dong Zhuo, and fractured into regional regimes ruled by various warlords, some of whom were nobles and officials of the Han imperial court. Eventually, one of those warlords, Cao Cao, was able to gradually reunify the empire, ostensibly under Emperor Xian's rule, but the empire was actually controlled by Cao Cao himself. Cao Cao's efforts to completely reunite the Han empire were rebuffed at the Battle of Red Cliffs in 208 / 209, when his armies were defeated by the allied forces of Sun Quan and Liu Bei. The Han dynasty formally ended in 220 when Cao Cao's son and heir, Cao Pi, pressured Emperor Xian into abdicating in his favour. Cao Pi became the emperor of a new state, Cao Wei. A year later, in response to Cao Pi's usurpation of the Han throne, Liu Bei declared himself emperor of Shu Han; and in 229, Sun Quan followed suit, declaring himself emperor of Eastern Wu. The period from Emperor Xian's abdication in 220 to the partial reunification of China under the Jin dynasty in 265 was known as the Three Kingdoms era in Chinese history.
Chen Han
The Han (1360–1364), officially the Great Han and known as Chen Han today, was a short-lived Chinese dynasty in the middle Yangtze region during the chaotic late Yuan dynasty. It was founded by the Red Turban rebel general Chen Youliang who first dominated, and later assassinated the Red Turban leader Xu Shouhui and usurped his regional regime. At its height, the Han territory encompassed the modern provinces of Hubei, Jiangxi, and Hunan, but Jiangxi mostly fell to another warlord Zhu Yuanzhang in 1361. In 1363, Chen and Zhu fought in the decisive Battle of Lake Poyang, where Chen was killed. His teenaged son Chen Li succeeded him, but no longer had the resources to resist the powerful Zhu, who easily conquered Han the next year. Chen Li who surrendered was exiled to Goryeo, and became the progenitor of the Korean Yangsan Jin clan.