He wanted to kill Li Qianyuan because of a personal grudge. The two sides were already irreconcilable enemies. If Chu Yunfan didn't die, Li Qianyuan would die, and vice versa.
There was no room for mercy between the two sides. Chu Yunfan's biggest advantage now was that Li Qianyuan was in the light while he was in the dark. He knew about Li Qianyuan's existence, but Li Qianyuan didn't know that he was still alive.
In other words, Li Qianyuan didn't expect Chu Yunfan to be still alive. After being attacked by such a big shot, Chu Yunfan managed to survive. Even the Prodigy List couldn't find Chu Yunfan's information. Chu Yunfan deliberately used the Mountain River Diagram to hide his aura.
If Li Qianyuan knew that Chu Yunfan was still alive, with his intelligence, it would not be difficult for him to guess that Chu Yunfan was still alive. At least, he would not be so clueless.
