The goal of ZHUGE Liang's northern expedition is not to destroy Wei, but to unify the three Qin Dynasties.

The Battle of Wei Shu has two major victories. One is the attribution of Hanzhong and the other is the attribution of Guanzhong. Who occupies all, who is another Qin Empire. The result is one of the two companies. The fundamental purpose of ZHUGE Liang's northern expedition is not to destroy Wei, but to unify the three Qin; while Si Ma knows exactly what Zhuge Liang is playing. In view of the domestic and foreign game situation of Cao Wei, si Ma decided to stick to Guanzhong, consuming Zhuge Liang and his Shu Han, and also constantly consuming the CAO group. At least in Cao Wei's country, he has a strategic vision of the world, and he is the only competitor to Zhuge Liang. I even think that after Cao, the history of Cao Wei is over. The descendants of Cao take Cao Yu and Cao Yu as typical examples. They are proficient in internal affairs and are still knowledgeable, but have no strategic vision in the world. For example, in his later years, Cao Yu even moved his national strength to attack Dongwu without any significance. When he lost, Wei Guanzhong became empty. Cao Yu, the successor, did not know how to rapidly enrich Guanzhong, but did not know the true purpose of ZHUGE Liang's northern expedition. Shi called Cao, Wei, and Yu as the three ancestors of Cao Wei. Some of them mean that Cao is arrogant about raising their children and grandchildren. Cao's strategy of the world was not passed to Cao's clan, but he had to learn it. It was only a matter of time for him to go home. Only by understanding the world can you have the world.

On the other hand of shuhan, Wei Yan's vision of what troops went out of zigu to take Changan's fast-paced vision lacks strategy. This is why Zhuge Liang did not dare to give the power of Shu Han to Wei Yan. He thinks that Wei's eyes are too bad and he is not convinced. It is better to give a later man who listens to his own words. Shu Han may still have hope to survive.

Of course, there will be no opportunity for Dong Wu in any case. from beginning to end, Dong Wu is a pawn used by Wei Shu to balance his opponent. Sun Quan knows his strategic position well and checks and balances the national policy of self-protection. It can be said that Sun Quan and his Dongwu are the only way to win the strong enemy of Wei Shu's military. Of course, this can only solve the problem of how long Dongwu can live. It is a matter of time to destroy the country. History has not given Soochow any chance to become the final winner. Compared with Wei Shu, Dong Wu's biggest enemy is Cao Wei, but he must attack Shu Han. Because it has no significance to go to the Central Plains hinterland of Cao Wei, and it cannot be occupied at all. The early evening and evening party were defeated by the Shu Han in the West. The victory of the Han and Chu dynasties was a foresight. If Dongwu captured the xishu city and went to the north to conquer the river, it might have lived for a longer time. However, Dong Wu's most sad reminder is that no matter who it is attacking, it will lead the other side to belong to the sanqin location of Wei Shu and the other side, so as to "send troops to the valley ", go back to the central path of the Qin Empire, and then Dongwu will die. No matter who the attack is, Dongwu will break the three-pronged balance, leading to the accelerated process of unification, that is, the accelerated process of its own demise. Therefore, Dongwu can only fight at any side and wait until the death ends.