[1] In 155 BC, Emperor Jing granted the title King of Hejian to Liu De (劉德), his third son.
[2] In 90 AD, Emperor Zhang reestablished Hejian on the territories of Lecheng, Bohai and Zhuo commanderies.
Liu Kai (劉開), the sixth son of the emperor, became the King of Hejian.
Kai's lineage held Hejian until the foundation of Cao Wei dynasty.
In 140 AD, the kingdom administered 11 counties, namely Lecheng (樂成), Gonggao (弓高), Yi (易), Wuyuan (武垣), Zhongshui (中水), Mao (鄚), Gaoyang (高陽), Wen'an (文安), Shuzhou (束州), Chengping (成平) and Dongpingshu (東平舒).