《资治通鉴·晋纪·晋纪二十一》
前燕王慕容俊派慕容恪攻打中山，派慕容评在鲁口攻打王午，魏国中山太守上谷人侯龛紧闭城门，抵抗固守。
燕王俊遣慕容恪攻中山，慕容评攻王午于鲁口，魏中山太守上谷侯龛闭城拒守。
King Murong Jun of Former Yan dispatched Murong Ke to attack Zhongshan and Murong Ping to attack Wang Wu at Lukou. Hou Kan of Shanggu, the Prefect of Zhongshan, shut the city gates tight and held out firmly.