In the eyes of the world, Cao Cao was a suspicious and cunning person, which was related to the fact that he once said to Chen Gong in his speech, "I would rather teach me to bear the people of the world, and hu teach the people of the world to bear me", which is too deeply rooted in the hearts of the people. However, in real history, Although Cao Cao was not resentful, he was also a suspicious person. For example, he accidentally killed Lü Bohao's family, which did happen, but afterwards he said that "I would rather bear people than people bear me", which expressed a kind of compulsion; for example, after Cao Zhi's death, he sent someone to assassinate the young genius Zhou Buxi, who was closely associated with Cao Zhi, only because he was afraid that Cao Pi would not be able to control this person, and so on.
It is reasonable to say that such a Cao Cao probably did not want to leave any hidden dangers. However, there was one person who was an exception--before Cao Cao's death, he saw that he had wolf ambitions, and he had specifically told Cao Pi to pay attention to this person, but instead of getting rid of this person, he left his life. This person was none other than Sima Yi, who later overshadowed the Wei Room. The Book of Jin records that Cao Cao once said to Cao Pi, "Sima Yi is not a human subject, and he will predict ru family affairs." So, why did Cao Cao keep Sima Yi alive?
Speaking of this, some people may say that Sima Yi was born in the Sima family of Wen County, Hanoi, and was a real family family, and Sima Yi's father, Sima Fang, also had the grace of recommending Cao Cao. Coupled with the fact that Sima Yi himself, as well as his brothers, were all famous and known as "Sima Bada", in this case, Cao Cao did not dare to move him easily, which was very normal. However, at that time, another person, whose origin was not worse than Sima Yi's, was easily executed by Cao Cao, and he was no one else, it was Yang Xiu of the Hongnong Yang clan who was born in four bodies and three dukes. Perhaps it is said that the family power behind Sima Yi should not be the reason why Cao Cao left him. So, why did Cao Cao do this?
First, it was low-key enough that Cao Cao could not grasp his handle
Although Sima Yi looked at the wolf with an eagle and was born with the appearance of a "non-human subject", he did indeed control the government of the dynasty, set up the Wei room, and committed disloyalty. However, before the change of Gao Pingling, especially before Cao Cao's death, he had always been low-key and patient, leaving no words. Cao Cao, the son of a large family, did dare to move, but without any reason to directly eliminate the other party, he could not do it, but he might directly force the Sima family to rebel, and the gain was not worth the loss. If, when Sima Yi was under Cao Cao's command, he was also as arrogant as Yang Xiu, and even directly speculated on Cao Cao's thoughts, Cao Cao would not have left him.
Second, stand in the right line
In addition, the reason why Cao Cao got rid of Yang Xiu was on the one hand because of his own suspicious personality and could not tolerate Yang Xiu speculating on his thoughts, on the other hand, because he chose Cao Pi as his successor, so he wanted to pave the way for Cao Pi, but Yang Xiu insisted on side with Cao Zhi. That is to say, to some extent, the reason for Yang Xiu's killing was the same as the reason for Zhou Buxi's killing. However, Sima Yi was firmly on cao Pi's side, so Cao Cao also wanted to let Cao Pi better take over the affairs after that, and also left some affection for Sima Yi.
Third, believe in Cao Pi's means
Moreover, although Cao Cao had been paving the way for Cao Pi after selecting Cao Pi, he was also a strict father. For example, when Cao Pi was young, in a chaotic world, in order to ensure Cao Pi's safety, he did not arrange a large number of bodyguards for the other party, but personally taught Cao Pi to ride and shoot, and let the other party learn swordplay, making Cao Pi a "master". In terms of employing people, he also adhered to this principle - he believed that Cao Pi must not be able to control Zhou Bu doubt was assassinated; Yang Xiu, who had the ability to pose a threat to Cao Pi, was unjustly killed, supporting Cao Pi, but he had ambitions sima Yi, but he only reminded Cao Pi to pay attention, did not interfere too much, he believed that as long as Cao Pi had the heart to be vigilant, he would be able to suppress Sima Yi.
Later, during Cao Pi's reign, Sima Yi did not do anything to apologize to Cao Wei, nor did he make any splashes. Unfortunately, what Cao Cao did not expect was that Cao Pi died young after only seven years on the throne, and cao Rui, the Wei Ming Emperor of Mingjun, did not have a long life, which gave Sima Shi an opportunity.
After the analysis of the whole article, it is not difficult for us to know that Cao Cao was originally a suspicious person, and it was also seen through that Sima Yi would not be willing to live under the people, but did not get rid of Sima Yi, not because the Sima family behind Sima Yi made him jealous, but because Sima Yi did not leave a handle, and the position he chose also made it inconvenient for Cao Cao to intervene, of course, Cao Cao believed in Cao Pi's ability, which was also one of the important reasons why he did so.
All the information in this article comes from books such as "Romance of the Three Kingdoms", "Notes on the Chronicle of the Three Kingdoms", "Book of Jin" and other books, and the editor guarantees the authenticity of the content, while there is no innuendo and no politics involved.