In the Three Kingdoms, Cao Wei was the strongest, but Zhuge Liang, as the weaker side, continued to attack, while Sima Yi, who fought against him, maintained a passive defense, and even after Zhuge Liang died of illness, he still did not take the initiative to attack the Shu State.
Sima Yi statue
First, the distrust of the Cao Wei Group, Sima Yi low-key survival
Sima Yi said that he was also an enterprising middle-aged man, but Cao Cao was a person with a poisonous vision and a very serious suspicion, and in the face of such a boss, Sima Yi had to put away his blood.
Cao Cao once had a dream that three horses were eating hay in the same trough, but each horse had its own trough. This made Cao Cao feel very confused, so he summoned Sima Yi and asked about the meaning, and Sima Yi couldn't help but giggle in his heart. Because he and his two sons were in the dynasty at the same time, and they were serving the Cao regime, wasn't it the meaning of the three horses and the same trough?
Sima Yi was playing drums in his heart, but on the surface he was still very calm, and immediately pointed the spearhead at the Ma Chao family.
Ma Chao
When Cao Cao listened, it seemed to make some sense, after all, he couldn't find out who it was. Ning killed the wrong person, not spared, so he ordered Ma Chao's three people to be killed to avoid the trouble. However, Sima Yi also had the word "horse", Cao Cao had always been cautious, this time only asked Sima Yi alone, and there was a sense of knocking on the mountain and shaking the tiger, and Sima Yi's heart was covered with a haze.
Moreover, Cao Cao heard that Sima Yi had the "appearance of a wolf", and he personally tried to test it. Seeing Sima Yi walking in front, he suddenly shouted, "Zhongda, please wait!" When Sima Yi heard someone call him, his head turned to look at it, but his body was still advancing, just like the green wolf in the wild looking back and hoping, Cao Cao saw that his heart was shocked, and he had the heart to kill him. However, Sima Yi was cautious and cautious, and he always failed to grasp the handle. Cao Cao had no choice but to say to Cao Pi, "Sima Yi is not a human subject, but will foresee ru family affairs." ”
Sima Yi was a man of great ambition and would certainly intervene in Cao Wei's rule. Because of this small matter, Sima Yi was put into the list of never hired by Cao Cao, and Sima Yi also felt the change in Cao Cao's attitude, and after experiencing these things, Sima Yi became more and more cautious in doing things.
Statue of Cao Pi
However, after Cao Cao's death, Cao Pi successfully ascended the throne, but he reused Sima Yi, why?
Sima Yi knew in his heart that he could not be reused in front of Cao Cao, so he started the idea of Cao Cao's heir, so Sima Yi used his status as a strategist to approach Cao Pi. Although Cao Pi was also well aware that Cao Cao was guarding against Sima Yi, Sima Yi did have the ability, coupled with his own good at disguise, pretending to be a pure and good look, so that Cao Pi quickly dispelled his concerns about him.
Moreover, Cao Pi was anxious to cultivate his own power, which also gave Sima Yi an opportunity to take advantage of it, so Cao Pi let Sima Yi become his think tank. After Cao Pi ascended the throne, Sima Yi was also able to save his life, and with Cao Pi's reuse, Sima Yi's power continued to expand. After being reused, why didn't Sima Yi attack the Shu state?
Second, Sima Yigong was forced to transfer away
Cao Pi, who became emperor, also gradually began to relax, he felt that he had the clan ministers around him who held real power, and he also held the power of life and death in the world, and Cao Pi was naturally very confident that he could control Sima Yi. However, Sima Yi, who underwent Cao Cao's baptism, was far from being comparable to Cao Pi, maintaining his own disguise and being very reclusive, which led to the continuous growth of Sima Yi's power in the dprk.
Over time, Cao Pi, who was best for him, also died. Cao Pi's son, Cao Rui, ascended to the throne. At this time, Sima Yi was already the elder of the two dynasties, and even if Cao Rui reused Sima Yi, he was actually guarding against him. In the course of the two wu raids, both xuchang, the base camp, were handed over to Sima Yi to guard. It seemed that he trusted Sima Yi, but he had the intention of testing him, but Sima Yi's general situation had already been achieved, and at this time, even if Cao Rui realized something, I was afraid that he was also powerless.
Cao Rui was jealous of Sima Yi's power and did not allow Sima Yi to attack the Shu state. Three generations of the Cao clan believed that Sima Yi was not a truly controllable person. After the death of Zhuge Liang, the sole pillar of the Shu state, Cao Rui believed that Sima Yi was likely to take the Shu state in one fell swoop, and Sima Yi would be out of control at any time.
Cao Rui
Although it was a good time to annex the Shu state, in Cao Rui's eyes, it was Sima Yi who should be more wary. Because Sima Yi himself resisted the attack of the Shu state, the merit of saving the country was no longer comparable. If he was allowed to establish his prestige again, and he had heavy troops in his hands, sima Yi wanted to rebel, and no one in the Wei state could compete at all.
Therefore, after Sima Yi blocked Zhuge Liang's offensive, Cao Rui was immediately sent to pacify Liaodong. After Sima Yi solved Liaodong, Cao Rui let Sima Yi guard Guanzhong, and did not have the will to let Sima Yi attack the Shu state.
Therefore, even if the news of Zhuge Liang's death came from the front, Sima Yi did not attack the Shu state, because it was far away from the Shu state, and the Shu state was not a good bone to gnaw.
Third, although the Shu kingdom was seriously injured, the fierce generals were still there
Although Zhuge Liang died, it was a blow to the Shu kingdom. However, at that time, the Shu state was still relatively powerful, and there were various outstanding talents such as Fei Yi, Jiang Wan, and Jiang Wei who guarded the Shu state. In addition, the terrain of the Shu kingdom is like the poem "Shu Road is difficult, it is difficult to go to the Qingtian", located in the midst of lofty mountains, easy to defend and difficult to attack.
At this time, it was not easy to capture the Shu state, and it was necessary to consider in the long run, if Sima Yi chose to attack, it would consume a lot of manpower and material resources, and it would not necessarily be able to attack it, which would have a serious blow to his reputation. At the same time, the State of Wu was a greater threat than the State of Shu, attacking the State of Shu, and the State of Wu attacked in the spirit of cold lips and teeth, taking advantage of your emptiness and knocking on the stick, at which time Sima Yi would be attacked from both sides.
Zhuge Liang
In many battles with Zhuge Liang, Sima Yi was also well aware of Zhuge Liang's ability, that is, there were many backhands, such as the empty city plan. This also made Sima Yi think carefully about every step he took, and he did not dare to risk marching. The Shu state did not have Zhuge Liang, the pillar of the pillar, but there was no guarantee that Zhuge Liang did not leave more strategies, so instead of risking defeat, it was better to besiege it first, and in Sima Yi's eyes, the Shu state was already a country with weak successors. Therefore, sima Yi no longer needed to set his sights on the State of Shu.
In addition, the results of Zhuge Liang's many Northern Expeditions achieved Sima Yi's prestige and status at this time. But taking history as a mirror, people can be wise, Sima Yi did not want to become the second Han Xin, Han Xin helped Han Gaozu Liu Bang to stabilize the world, the contribution is indispensable, but in the end died at the hands of the woman, the cunning rabbit is cooked by the dog.
Fourth, Cao Wei looked at the tiger and was trapped in infighting
Sima Yi also knew that Cao Rui was jealous of himself and did not trust himself. Therefore, he would not take the initiative to apply to attack the Shu state, because it would cause suspicion. Therefore, Sima Yi once again chose to be patient. In the face of Wei Guo's snub and Wei Guo's unfair treatment of himself, he repeatedly endured. Later, Cao Rui was critically ill and recruited Sima Yi to enter the capital for the night.
Sima Yi was orphaned by Cao Rui on his deathbed, just as Zhuge Liang was orphaned by Liu Bei. However, Cao Shuang of the Cao clan did not give Sima Yi this opportunity, and Cao Shuang had been targeting Sima Yi, making Sima Yi intolerable, planning to get rid of Cao Shuang and his political clique, which was the most threatening, and become the true master of the Wei state.
Cao Shuang
At this time, The heavens also sent an opportunity, because Cao Shuang had always been unaccustomed to Sima Yi sitting on an equal footing with himself, and wanted to destroy Sima Yi, but he was suffering from no chance. Therefore, he planned to lead troops to attack the Shu state to prove his strength, but in the face of the powerful Shu state, Cao Shuang was defeated one after another and lost his reputation.
Sima Yi took the opportunity to launch a coup d'état at Gaopingling, which eventually took Cao Wei's power firmly into his own hands. Although the State of Wei had changed its surname to the Sima family at this time, and Sima Yi had no scruples about his life, the old forces left by Cao Wei still existed, and he wanted to first eliminate cao Wei's old forces and consolidate his own power. This also became the last obstacle for him to attack the Shu kingdom.
Final conclusion
In the early period, it was mainly because of Cao Cao's restrictions on Sima Yi, and in the middle period, Cao Rui did not trust Sima Yi, and Sima Yi also cared about Cao Rui. In the later period, although Sima Yi was in power, there were fierce tigers in Jiangdong on the outside and cao Wei's old forces on the inside, and Sima Yi naturally could not attack the Shu state.