Cao Cao, in this life, was criticized by posterity for his viciousness and insidiousness, but Cao Cao did not think that the Jiangshan he had worked so hard all his life had actually reached sima Yi's hands. In fact, Cao Cao had already discovered Sima Yi's infidelity, but he had not been able to get rid of him for a long time. It is reasonable to say that Cao Cao was decisive in killing, but he was only hesitant in this matter, what was going on?
The most important thing is that Sima Yi is talented, and when he was young, Sima Yi's reputation was already well known. Cao Cao's love for everyone was very clear, and naturally he did not want to let Sima Yi go. Second, the relationship between Sima Yi and Cao Pi was relatively good. Cao Pi was still very good between him and Sima Yi in private, and he attached great importance to him, and in many cases, he could be used by Sima Yi. Although Cao Cao was killed by Sima Yi many times, he was hindered by Cao Pi's face and eventually left Sima Yi behind.
At the beginning, Cao Cao also wanted to cultivate Cao Pi as a successor, so Cao Cao would not easily start with the people cao Pi was optimistic about. Third, Sima Yi's fate was hard. Cao Cao could not have imagined that Sima Yi actually lived to be more than 70 years old. In ancient times, the average life expectancy of people was actually relatively low. At the time of Cao Cao's death, Sima Yi was 42 years old, while Cao Pi was 33 years old. In terms of age, Cao Pi would naturally live longer than Sima Yi. Therefore, in Cao Cao's eyes, sima yi was believed to have no impact on Cao Pi. Cao Pi had a short life and died in his 40s. Such a comparison really has some contrasts. Sima Yi, as a person, belongs to the type of person who is good at concealing forbearance, and can be said to be a very tolerant conspirator during the Three Kingdoms period. Many people like to do things first, afraid that others will not know what they think. But Sima Yi was not such a person at all, he would rely on his own secret planning before doing things, for example, before Sima Yi launched the Gaopingling Rebellion, no one could have imagined that he would have such a practice.
Being able to surprise Cao Cao was enough to show Sima Yi's low profile. This time, the high profile allowed Sima Yi to completely control the power. So what do you think Cao Cao chose not to get rid of Sima Yi in the first place?