Su Qin (? -284 years ago), Zhang Yi (? -309 years ago), Fan Ju (? -255 years ago, we could know that Su Qin and Zhang Yi were not contemporaries, but it was inconclusive whether they were contemporaries politically. Su Qin advocated uniting against Qin, and Qin sent envoy Gongsun Yan to lobby, which led Qi and Wei to attack Zhao. Su Qin left Zhao, and the alliance failed, which also led to problems between Su Qin and Qi. Therefore, it was his idea to unite against Qin in the early stage. Qi just wanted to get back at Qi, but Su Qin's mother went to Qi for fear of being killed by Yan Yi.