Eighteen Kingdoms

[1] The establishment and abolishment of the Eighteen Kingdoms marked the beginning and end of a turbulent interregnum known as the Chu–Han Contention.

The details of the feudal division are as follows: The Eighteen Kingdoms were short-lived.

Meanwhile, Xiang Yu had Emperor Yi of Chu and King Han Cheng of Hán killed.

Thereafter, Liu Bang of Hàn conquered the lands of the Three Qins, thereby formally starting the Chu–Han Contention.

Following many battles and changing alliances, Han defeated Chu and subdued all other kingdoms, where Liu Bang appointed vassal kings while making himself the first Emperor of the Han dynasty in 202 BCE.