《后汉书·列传·孝明八王列传》
和帝可怜她们，派彭城靖王刘恭到下邳正其嫡庶，立儿子刘成为太子。刘衍立五十四年死去，儿子贞王刘成嗣。
子哀王宜嗣，数月薨，无子，建安十一年国除。
Emperor He felt sorry for them and sent Liu Gong, the Pacifying King of Pengcheng, to Xiapi to rectify their legitimacy and establish his son Liu Cheng as the Crown Prince. Liu Yan passed away after ruling for fourteen years and was succeeded by his son King Zhen of Liu Cheng.