Hou Jiayu immediately understood Xiao Yunlong's meaning. Zhao Hai was obviously a dangerous person. It would be great if they could use such a person. However, a person like him was always cruel and merciless. If they became stronger in the future, would they still be able to use him? If things went wrong, there would be no way to control him.
In order to control him forever, one had to be stronger than him. Only by always being stronger than him could one control him. But how could one guarantee that one would always be stronger than him? Other than working hard on his own cultivation, he also had to create some trouble for him so that he would not be able to cultivate so quickly.