《后汉书·冯异传》有一个故事,说冯异为汉兵所执,被刘秀召见.过后对苗萌说:“今诸将皆壮士屈起,多暴横,独有刘将军所到不虏掠.观其言语举止,非庸人也,可以归身.”以后,冯异在刘秀道经父城时,果真“开城奉牛酒迎光武”. There is a story about the later Han Feng Biography, said Feng Yi for the Han Bingzhao, was called Liu Xiu met.After the Miao Meng said: “The Warriors will now turn all Warriors, tyrannical, unique to the General Liu Frize swept view of its speech, non-mediocre, you can go. ”Later, Feng Yi in Liu Xiu Road, via the Father City, really“ Kaibing cattle drink Yinguang Wu. ”