《左传·僖公二年》和《僖公五年》记载了这样一个故事:春秋时期,晋国和虞国相邻,而虞国又和虢国相邻。晋国想吞并这两个诸侯国,但这两个诸侯国关系密切,晋献公诡诸感到有些棘手。他的谋臣荀息建议他把珍贵的“屈产之乘与垂棘之璧”送给虞国国君,然后“假道於虞以伐虢”。诡诸舍不得自己最钟爱的良马和玉璧,心中不悦,荀息安慰他说:“若得道於虞,犹外府也。”贪得无厌的虞国国君果然欣喜若狂地接受了礼物,答应了晋国的要求。就这样,晋国军队 “Zuo Xi public two years” and “Gong public five years” recorded such a story: during the Spring and Autumn Period, Jin and Yu adjacent, while Yu and neighboring countries. The Jin dynasty wanted to annex the two vassal states, but the relations between the two vassal states were close and the Jin Xian Gong trick felt a bit trickier. His chief hsun-chi suggested that he give the king of Yu Guo-kuo a precious gift of “yielding to the twig,” and then “the fake Yu Yu-fei”. Xunzi comforted him: “If Yude Yu Yu, Judaev government also.” Insatiable greed Yu Guojun was ecstaticly accepted Gifts, promised the request of Jin. In this way, Jin army