When Sima Yi seized power, Cao Shuang had imperial power and military power. Why did he surrender anyway?

When it comes to the changes in Gao Ping Ling, we first think of Cao Shuang and Sima Yi. Historically, Cao Shuang was not a vegetarian. He has not only great military power, but also great imperial power. However, after Sima Yi seized power, he was discouraged at a critical time, but chose the magical power. In fact, it is not because he is worse than Sima Yi, nor because he is not as good as Sima Yi. I think he surrendered for these three reasons.

First, Cao Shuang is still not confident and a little afraid of Sima Yi. Sima Yi is a wily man. He thinks that he is inferior to Sima Yi in fighting spirit and prestige, and Sima Yi has hardly lost this battle. If Cao Shuang had not raised Sima Yi's troops before, Sima Yi would not have made Cao Shuang proud for so long.

Second, Cao Shuang's thinking is too simple and his means are not hard enough. He thought that Sima Yi would not commit suicide if he surrendered after seizing power. So Cao Shuang thought that he would be satisfied as long as he had a fortune, so he wanted to take this opportunity to let Sima Yi leave a way out for himself, but he didn't know that when he had nothing, Sima Yi would kill himself and implicate his own people.

Third, his military ability is far less than Sima Yi's. In the previous war to conquer Shu Han, Cao Shuang was defeated by Fei Yi, the general of Shu Han, and later he was completely defeated. He was still timid in his heart, so he thought that his military ability was far less than Sima Yi's, so he chose to give up resistance. He thought Sima Yi would let himself go, but he didn't know that it would hurt him more.