《资治通鉴·汉纪·汉纪四十二》
朝中讨论此事的人都认为可以批准这个建议。陈忠却说： 原先由于宫的凶恶狡猾，姚光没有能够打败高句丽。如今宫去世而我们乘机进攻，这是不义。
陈忠曰： 宫前桀黠，光不能讨，死而击之，非义也。
All the people in the court who discussed this thought the proposal could be approved. However, Chen Zhong said, "Previously, because of Gong's vicious and cunning character, Yao Guang failed to defeat Goguryeo. As Gong has passed away and we take this opportunity to attack, this is not righteous.