Why was Sima Yi so happy when he saw an old man with an axe visiting, and called Zhuge Liang to die?

Seeing an old man with an axe visiting, Sima Yi was very happy and told Zhuge Liang that Zhuge Liang was going to lose, because the arrival of this old man made Sima Yi thoroughly implement his strategic principles and tactical plans. If these strategic principles and tactical plans are thoroughly implemented, Sima Yi is likely to win the war.

On one occasion, Zhou Yu faced Zhuge Liang and said, "How can Yu be born bright?" In fact, when Zhuge Liang faced Sima Yi, Zhou Yu should have had similar helplessness. In the face of Zhuge Liang, Sima Yi has two very clear understandings: First, Zhuge Liang is very good at marching and fighting, and the probability of losing against Zhuge Liang is very high. Second, Cao Wei is stronger than Shu Han, and Cao Wei can afford it, but Shu Han can't afford it.

With these two sober understandings, Sima Yi knew that the safest way to deal with Zhuge Liang was to close the camp gate, do a good job of defense, and never go to war, which would kill Zhuge Liang and Shu Han. Therefore, Sima Yi adopted this strategic policy towards Zhuge Liang. In short, no matter how Zhuge Liang is, Cao Wei will always change-he will never go to war.

Facing Sima Yi, who was as timid as a mouse, Zhuge Liang was really helpless. I had to try my best to force Sima Yi to leave the station. For example, let soldiers insult Sima Yi's ancestors for three generations every day, such as giving Sima Yi women's clothes and so on. But Sima Yi is very relaxed. Although Sima Yi can handle it calmly, Sima Yi's generals, in the face of such insults, were really unbearable and demanded to play, but Sima Yi could not suppress it.

Sima Yi came up with a way to suppress the anger of his subordinates with Wei Mingdi. Sima Yi came to Wei Mingdi and asked Zhuge Liang to do or die, but Wei Mingdi refused and sent Xin Pi, the oldest minister, to supervise. Wei Mingdi gave Xin Pi a handle to restrain people. If he disobeys, he can use it to kill him. The so-called festival graupel is actually an axe, similar to the sword on the side.

Sima Yi was very happy to see the arrival of white-haired Xin Pi and shouted: Zhuge Liang is going to be defeated. As soon as Xin Pi arrived at the barracks, he immediately conveyed Wei Mingdi's order: No one is allowed to go out without authorization, and anyone who goes out without authorization will die! Xin Pi stood at the gate of the camp with lanterns every day to supervise the people. In this way, Sima Yi's strategic policy can be adhered to.

The weak Shu Han is short of logistics, especially food and grass, and hopes for a quick war. Facing Sima Yi who stayed at home, Zhuge Liang was in a hurry and had no choice but to retreat. Zhuge Liang broke down from overwork and was incurable, and finally died. Sima Yi won the final victory.