Zhao Hai returned to his own courtyard. This time, he had only given Wu Kai this idea. As for what to do, it was up to Wu Kai and the others. Zhao Hai had already discovered that Wu Kai and the others were still on guard against him. However, in Zhao Hai's eyes, this was very normal.
Wu Kai and the others were actually worried that Zhao Hai would steal their position. Zhao Hai was closer to Zhou Fengming than Wu Kai was to Zhou Fengming. This could be seen from Zhao Hai's conversation with Tao Jing. It was because of this that Wu Kai and the others were worried about him.
From Wu Kai's point of view, if Zhao Hai really stole their position and seized the power of The Poison Tree sect, then Zhou Fengming would very likely replace them with Zhao Hai, and they would really be finished.