In addition, Cheng also participated in the Xuanwu Gate incident and was the core figure of the Xuanwu Gate incident. Without Cheng, the Xuanwu Gate incident would not have been so easy and successful. Therefore, his accession to the throne was made by himself, and he has always been blessed by Cheng. Maybe he still thinks that Cheng will bring him good luck. To sum up, if a courtier wants to live and work under the emperor for a long time, he doesn't need too much credit or wisdom. This will make the monarch doubt you soon. This kind of thing will happen again and again in history, but few people will notice it. Therefore, when the People's Republic of China was founded, there was always a case that the founding emperor slaughtered the founding minister. Cheng did not know if he was really confused, but he did survive the crisis again and again.