 Xun Zhi wished to make an all out attack on the city but Yang Pu favored continued negotiations, therefore relations between the two generals began to strain.When Emperor Wu sent the governor of Ji'nan, Gongsun Sui, to straighten things out, Xun Zhi told him that Yang Pu was delaying the defeat of Gojoseon.Gongsun Sui agreed with him and used his imperial credentials to summon Yang Pu to Xun Zhi's camp.