《水经注·卷二十一》
《续汉书》说：世且亲自西征，当时盗贼群起，郊县县令冯妨被盗贼延哀所攻，力竭计穷。
《续汉书》曰：世租车驾西征，盗贼群起。郊令冯鲂为贼延哀所攻，力屈。
The "Continued Book of Han" says: Shi personally conquered the west, when thieves rose up, and Feng Fang, the county magistrate of the suburban county, was attacked by Yan Ai, the thief, and was exhausted and at his wit's end.