《金史·列传·卷十四》
完颜欢都的军队走到中京以南，遇上三十多个骑兵，他们谎称： 请让我们明早来这里投降。 
完颜欢都游兵出中京南，遇骑兵三十余绐曰： 乞明旦来降于此。 
Wanyan Huandu's army came to the south of Zhongjing and met more than 30 cavalrymen. They lied and said: "Please let us come here to surrender tomorrow morning."