In his early years, he devoted himself to guiguzi and learned the art of vertical and horizontal. I have traveled for many years and am down and out. Later, he assiduously studied Yin Fu, lobbied other countries, gained recognition, sent an envoy to Zhao, put forward the strategic concept of "uniting the six countries to resist Qin", and finally formed an alliance, which was "about a long time ago" and attached great importance to the six countries, making Qin afraid to send troops to Hangu Pass for fifteen years. After the dissolution of the alliance, the State of Qi attacked Yan, and Su Qin said that the State of Qi returned to Yan. After Yan arrived in Qi State, he engaged in anti-espionage activities and was appointed as a guest of Qi State. The doctor of Qi sent someone to assassinate him because of his rivalry for favor. Su Qin gave advice and killed the assassin before he died.
There are 3 1 works of perilla collected in Hanshu Yiwenzhi, all of which are early lost works. There are sixteen essays and letters in Letters from the Warring States Period, eleven of which are not found in the existing ancient books handed down from generation to generation.