In 144 BC Liang was split into five kingdoms among the sons of King Xiao, with Liu Ding gaining Shanyang.
[1] In 97 BC, Emperor Wu granted Shanyang to his son Liu Bo (劉髆) as the Changyi Kingdom (昌邑國).
His successor Liu He was selected as the new Han emperor by regent Huo Guang in 74 BC, and the kingdom was converted to a commandery.
[1] In 2 AD it administered 23 counties and marquessates, including Changyi (昌邑), Nanpingyang (南平陽), Chengwu (成武), Huling (湖陵), Dongniang (東嬢), Fangyu (方與), Tuo (橐), Juye (鉅野), Shanfu (單父), Bo (薄), Duguan (都關), Chengdu (城都), Huang (黃), Yuanqi (爰戚), Gaocheng (郜成), Zhongxiang (中鄉), Pingle (平樂), Zheng (鄭), Xiaqiu (瑕丘), Zixiang (甾鄉), Lixiang (栗鄉), Quxiang (曲鄉) and Xiyang (西陽).
In 140 AD, the commandery administered 10 counties, namely Changyi, Dongmin (東緡), Juye, Gaoping (高平), Hulu (湖陆), Nanpingyang, Fangyu, Xiaqiu, Jinxiang (金鄉) and Fangdong (防東).