《资治通鉴·汉纪·汉纪二十四》
二月，癸丑，成帝下诏立定陶王刘欣为皇太子。封中山王的舅父、谏大夫冯参为宜乡侯，再增加中山国采邑三万户人家，以示安慰。成帝派执金吾任宏，暂时署理大鸿胪职，持符节征召定陶王入京。
二月，癸丑，诏立定陶王欣为皇太子，封中山王舅谏大夫冯参为宜乡侯，益中山国三万户，以慰其意；使执金吾任宏守大鸿胪，持节征定陶王。
In February, Gui Chou, Emperor Cheng issued an edict to establish Liu Xin, King of Dingtao, as the crown prince. The uncle and counselor of the King of Zhongshan, Feng Can, was enfeoffed as the Marquis of Yixiang, and the Zhongshan kingdom was granted an additional 30,000 households as a consolation. Emperor Cheng sent Zuo Jinwu Ren Hong to temporarily act as the Grand Honglu, and held the talisman to summon the King of Dingtao into the capital.