There is a positive example and a negative example of using the "empty city plan"

In 666 BC, the "empty city plan" was like this: the king of the Eastern Zhou Dynasty 1 1, the southern power of Chu, suddenly sent an army with 600 chariots, led by Ling Ziyuan, to kill Zheng. After hearing the news, Zheng He and his ministers were very flustered. Some people say that Chu is too powerful to fight, so they can only make peace with it. It is said that it is definitely not possible to fight hard, and we can only insist on asking for assistance from other countries; It is said that we should hurry to other cities and avoid these barbarians for the time being. Only Prime Minister Uncle Zhan (then called Zhengqing by Zheng Guo) said gracefully: What are you afraid of? I know how many intestines the Chu people have, and I have my own plan to break him! So stretch quickly sent people to neighboring countries for help and arranged the layout unhurriedly. When the pioneer of Chu came to the gate of Zheng, he suddenly saw the gate of Zheng wide open, and the people in the city came and went, calm and comfortable. Not a single soldier was seen inside or outside the city. When the pioneers of Chu saw this scene, they didn't know what Zheng was doing. There are not many people in their own vanguard, so they dare not rush. Hurriedly ordered the village fifty miles away from the city to wait for the arrival of the army. Your son Yin Ziyuan has arrived. I heard about it. Look up. Suddenly, I saw Zheng's gate closed, and there were many banners on the head of the city, and the horses were like clouds, and the swords and halberds were dazzling. The Truman was surprised. The next day, they heard that Qi, Song and Lu all sent troops to help Zheng, so the Chu army had to go back. According to Modern Chinese Dictionary, "empty city plan" refers to the strategy of covering up the emptiness of strength and deceiving the other side. So the real empty plan should be that there are basically no soldiers in the city or the strength is very small relative to the enemy. Although Zheng was not as powerful as Chu at that time, his strength in Beijing was not empty (especially compared with the vanguard troops of Chu). Opening the city gate wide is nothing more than ambushing soldiers in the city and luring Chu Xianfeng into the city. When the Chu army arrived, the city gate was closed immediately. Therefore, this matter is only a bit of an empty plan, or it provides a model for future generations to really implement the empty plan, which itself is still difficult to calculate. Let's look at three examples cited in Mr. Qian Zhongshu's "Pipe Cone": In 430 AD (the seventh year of Song Yuanjia), Liu Yilong and Song Wendi sent generals to Yan Zhibei for an expedition. In the early days of victory, Song Jun recovered all the land south of the Yellow River. Later, he was defeated and returned to the chaotic south of Yan Zhi. (Coarse Stone Publishing House: Yuanjia Northern Expedition was the biggest action of the Southern Dynasties to recover the north after the southern crossing of the Jin Dynasty. Unfortunately, it coincided with the strength of the Northern Wei Dynasty and the military strategic mistakes, which led to the first victory and then defeat. From then on, southerners dare not spy on the north. Later generations often clap their hands and sigh when they read history! Xin Qiji's "Yuan Jia Cao Cao, seal the wolf in the professional place, win the north in panic" is also reciting this. ) the northern Wei army pursued the victory and hit Shandong until Jinan was at the gates. At that time, the prefect of Jinan was called Xiao Chengzhi (the father of Xiao Daocheng, the founding emperor of the Southern Qi Dynasty), so he was included in the Book of the Southern Qi Dynasty? Gao Zuji). Tens of thousands of soldiers in the Northern Wei Dynasty were killed near the city edge, while there were only a few hundred soldiers in Jinan. Xiao Chengzhi saw that things were urgent, and even it was too late to escape. He quickly told the soldiers to hide and then opened the city gate. Some people say that with so many enemies, it is not necessarily useful to close the city gate. Isn't this gambling? Xiao Chengzhi said with a smile: Because it is useless to close the city, we can only gamble like this. As a result, the soldiers of the Northern Wei Dynasty really suspected that there was an ambush and dared not attack and left.

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