Why did Su Chan kill Xu Taiping?

Angry little uncle. In Every Bone, the third and third layman behind Xu Taiping who taught him to practice sword is a young martial uncle. Su Chan wanted to use Michelle Ye's hand to slay Xu Taiping, so as to provoke him and force him to take action. Because Su Chan is the ninth generation of magic practice after Jiu You was sealed in a mysterious cave, he wants Uncle Xiao to die. As long as Uncle Xiao is alive, Jiuyou dare not openly invade Jiuyou Mansion.