Everyone has seen the Romance of the Three Kingdoms, and Zhuge Liang, who was evaluated by Mr. Lu Xun as a wise and close demon, has a tactical miracle, that is, the great empty city plan. Legend has it that Zhuge Liang was too late to withdraw after Ma Mo lost the street pavilion, Sima Yi led hundreds of thousands of troops to flock to Zhuge Liang, there were only a few thousand old, weak, sick and disabled in Zhuge Liang City, his subordinates let him go first, he said where to run, take the car faster than the cavalry. So let people open the city gates, sprinkle the court, bathe and burn incense, and play the piano on the castle tower. After Sima Yi came, he was frightened, thinking that there was an ambush in Zhuge Liang's city, did not dare to come in, and led people to evacuate. Zhuge Liang said, In fact, I was cautious all my life, and Sima Yi concluded that I did not dare to take risks, so I did not enter the city. It's all psychological warfare.

Of course, this story was made up by Mr. Luo Guanzhong, and the Romance of the Three Kingdoms did not have this example at all. But in history, there is no real empty city plan, and there really is, which occurred in the Tang Dynasty. During the reign of Emperor Gaozong of Tang, there was a general named Cui Zhiwen, who began to serve as a Sima in Lingzhou, and there was a Xue tribe on the border of Lingzhou, with about 10,000 tents, who repeatedly invaded the ordinary people on the border of Lingzhou, and the common people had to abandon farming in order to defend themselves, and practiced horseback archery every day. Cui Zhiwen told his boss that he had migrated the gang to Hebei. The boss reported Li Zhi, but Li Zhi did not listen. Cui Zhiwen told Li Zhi more than a dozen times, and Li Zhi finally listened. So the people on the border of Lingzhou can live and work in peace and contentment. Later, the leader of the Xue xue tribe also came to thank him, at the beginning you moved me to Hebei, I still hate, now see where the water and grass are luxuriant, the tribe is getting richer and richer every day, we are all very grateful to you.
Cui Zhiwen later became the assassin of Lanzhou, and one day more than 30,000 party members came to attack, but the garrison in the city was very small, vulnerable, and the people were particularly afraid and did not know what to do. Cui Zhiwen asked everyone to open the city gate and let the enemy in. As a result, the dangxiang people were afraid of an ambush, did not dare to go in, and were hesitating, so the general Quan Shancai brought people to relieve the siege, and the dangxiang people were defeated. Kwon Sun-chae also captured many prisoners and wanted to kill them, and Choi Zhi-wen said that if the killing is unknown, there will be a disaster. In case the enemy marries The Tang Dynasty from now on, the gains will outweigh the losses. At that time, the regret medicine is not available to buy, so it is better to let them go. Quan Shancai heard that it made sense. The party members knew about this and came to join them one after another.
Originally, it was Cui Thorn Shi's empty city plan, but Luo Guanzhong wrote about the Three Kingdoms, and in order to highlight Zhuge Chengxiang's clever calculations and fearlessness in the face of danger, he put this matter on Zhuge Liang's head. That's what it takes to recreate it.
In fact, the empty city plan is a suspicious strategy, testing the enemy's judgment of the form and the comprehensive speculation of the style of the opposing commander. Many people who read the Three Kingdoms, including everyone, can't study the Three Kingdoms correctly, and the empty city plan is certain that Zhuge Liang has not been put on, but why hasn't it been put on the point. Why sima Yi did not send a team of people and horses to test and send them to death, in fact, he had not read this Tang Dynasty story. When the two armies are engaged, they not only fight the strength and logistics of the enemy and us, but also fight the boldness and strategy and tactics of the commanders of both sides. In the midst of strategizing, decisive victory is thousands of miles away.
For example, if you catch a lottery ticket, you feel that this lottery is estimated to be able to win, and you also feel it, but you just don't spend two dollars to invest, and the result comes out and you regret it. Is it that you are reluctant to pay two dollars? Instead, you misjudged the situation, you feel that you can't buy this period, and two dollars is not worth spending. Two dollars is also money. This is the reason why Sima Yi or the Dang Xiang people did not send death squads into the city. Yue Fei said: War is a superb technology, and the use of it is so ingenious that anything can happen on the battlefield.