《旧五代史·后梁·列传十二》
十二月，牛存节派王言在夜晚埋伏勇士在州城西北，用船渡过濠沟，搭梯子登上矮墙。
十二月，存节遣王言夜伏勇士于州西北，以船逾濠，举梯登陴。
In December, Niu Cun Festival sent Wang Yan to ambush brave men in the northwest of the state city at night, used boats to cross the moat, and climbed up the short wall with ladders.