substitute?Yes, you have to pay extra!

Jiang Shengyu, who was at ease as a substitute, suddenly found that he seemed to have the capital to compete with a certain "Bai Yueguang", so he started his own strategy plan.But why did things suddenly start to develop in an uncontrollable direction?please!I'm here to be a stand-in?Didn't you come to be Bai Yueguang?Why did you suddenly become my stand-in?