Dai was a short-lived state from 228 BC to 222 BC[1] during the Warring States period of Chinese history. Prince Zhao Jia, older brother of King Youmiu of Zhao, fled with the remnant forces to Dai Commandery after the conquest of Zhao[1] and was proclaimed the new king of Zhao. His rump state was conquered in the year 222 BC by Qin[1] during its campaigns against Yan. The ruins of his capital are preserved in present-day Yu County, Hebei, as "Dai King City" (代王城).
In the Chu–Han, a Zhao royal was installed as the king of Zhao by (Zhang Ao's father) and in 208 BCE and was briefly changed into the king of Dai in 206 BCE. Chen Yu, Zhao Xie's general, was installed as the king of Dai in 206–204 BCE.
When the Han dynasty was founded, Liu Bang took back all the kingships/principalities from the vassal kings of family names different from Liu. He created his son Liu Heng as the prince of Dai in 196 BCE.