After the loss of Street Fort, the situation of the Shu-Han dynasty became extremely grim. At that time, Zhuge Liang led only more than 2,000 men, facing the army of 150,000 led by Sima Yi. In order to cover the withdrawal of the main force of Shu-Han, Zhuge Liang had to transfer the generals around him. In such a disadvantageous situation, Zhuge Liang decided to take a risk and implement the strategy of Empty City.

In order to achieve the effect of the Empty City strategy, Zhuge Liang did not set up any ambushes or obstacles on Sima Yi's marching route. When Sima Yi's army arrived at the city, Zhuge Liang ordered people to sweep the gate and he himself played the lute on the city wall. After seeing such a scene, Sima Yi thought for a moment and ordered the withdrawal of his army.

Many people believe that Sima Yi withdrew his army because he was scared by Zhuge Liang's Empty City strategy. However, as a strategist, Sima Yi would not be easily disturbed by such things. In fact, Sima Yi understood that the Shu army was unable to reverse the defeat at that time, and he himself did not hold the core power in the court. Therefore, it was not worth it for him to fight to the death in such a situation. In addition, if Zhuge Liang died, the strength of Shu-Han would quickly decline, and it would be easy to destroy Shu-Han. Therefore, Sima Yi chose to withdraw his army instead of attacking the city, probably to leave a way out for himself.

In conclusion, Zhuge Liang successfully implemented the strategy of Empty City under extremely disadvantageous conditions, while Sima Yi's withdrawal was not due to fear, but based on his profound understanding of the situation and his consideration of his own interests. This historical story not only demonstrates Zhuge Liang's wisdom and courage, but also highlights Sima Yi's calmness and decisiveness.

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