The so-called Sandu is because there was a rule in the Zhou Dynasty at that time that the walls of the noble princes should not exceed 18 feet, which was established to prevent them from rebelling in the future.

During the Spring and Autumn Period and the Warring States Period, the three prime ministers of the Lu State, "Sanhuan", controlled the general situation of the country and ignored this provision.

Confucius, who paid attention to etiquette, couldn't look down on this, and decided to join forces with the monarch Lu Dinggong to start the "Sandu" action, that is, to push off the extra 18 feet in Sanhuan's house.

Shusun Zhou Qiu was the first to stand up for Su Sandu, because the most important territory under his territory had been occupied by his subordinates.

Of course, Confucius was not afraid of such things, so he agreed.

At this time, there was a craftsman official named Si Chi in Yuyi, who had heard Confucius lecture in his early years, and heard that he was going to preside over the action of the three capitals, so he came to surrender to Cheng.

Confucius then asked for Si Chi's opinion: "The land is not only the worry of the uncle and grandson, but also the disaster of the country.

After Confucius heard about the situation in Yudi, Confucius said in person: "It seems that even if we don't attack, Yundi won't last long, and now you can do it like this, and naturally everything will fall into place." ”

Confucius led his army to a place not far from Yudi and stationed there.

Full of confidence, Si Chi returned to Yunyi and said to Hou: "We have been attacked for almost a year, and food is becoming more and more scarce. Now between Qi and Lu, if neither country takes refuge, it will definitely not work. Why don't you ask to serve the Qi State? In this way, the Qi State will still give you the title of Yunyi, and you will still rule the people here. Otherwise, there will be a shortage of food and grass, and the common people will rebel. ”

Hou Jian was indeed a little overwhelmed at this time, so he listened to Si Chi's words.

It happened that the envoy of Qi State came, and Hou Jian had a secret conversation with the envoy of Qi State.

Si Chi took the opportunity to gather the people of Yi and encourage everyone: "We are finished! Hou Gong is ready to exchange the land of Yu with the Qi State, and the Qi people are ready to move our people, we are going to be displaced!"

When the people of Yuyi heard this, they were skeptical.

Si Chi said to Hou again: "I asked the people just now, everyone's opinions are different from yours, you might as well exchange the territory of the people of Qi and Qi." Because Yunyi belongs to the Lu State, even if you get this fief in the future, you will be attacked and expelled by the Lu people, so why don't you hold on to this place? It is better to change to another piece of land and travel leisurely! Besides, if the people of the Qi State want to use the Lu State to coerce the Lu State with the help of the Lu, they will definitely double the land for you, and you will make a lot of money! In addition, why don't you prepare more leather armor and put it in the city gate in case of accidents?"

When the prisoner heard the idea, he was overjoyed, praised him repeatedly, and prepared a lot of leather armor and put it in the city gate.

Hou Jian found the envoy of Qi State and said: "Our Hou Yi Commander wants to exchange Yunyi with your country, and hopes that your country will inspect Yunyi to show sincerity, but the people there are unwilling, so you should bring more troops to inspect." ”

The envoy of Qi thought that Si Chi represented the Hou prisoner, so he agreed to check it the next day.

When the envoy of Qi was about to arrive, Si Chi sent people around the city and shouted, "The army of Qi has arrived!"

The people of Yundi were very frightened, and they came to the city gate one after another, put on the leather armor prepared by the prisoner, and surrounded the mansion of the prisoner.

Si Chi pretended to shoot these people, but Hou Ji stopped him and said: "I didn't expect the people to be so incomprehensible, now I have to give up Yunyi and go away!"

So the prisoner asked to leave, and the people who surrounded him agreed and let him go.

In this way, Si Chi stepped forward and took the dangerous man Hou out of the nest. Every time the prisoner went out of the door, the people of the land closed the door. By the time they arrived at the outer city gate, the prisoner had been completely isolated.

Si Chi pretended to be willing to flee with the Hou prisoner, and the Hou prisoner said gratefully: "You better stay, in the future, when the situation is stable, I can come back." ”

Si Chi sobbed and said, "I will definitely live up to your expectations." The two parted in tears.

As a result, the remaining Si Chi put Confucius into the city, and a huge rebellion was put down by Si Chi.

Only then did the Hou prisoner know that he had been deceived, so he had to flee to the state of Qi and present a map of Yunyi.

At that time, Qi Jinggong felt that the situation had been decided, so he had no choice but to push the boat down the river and return the map of Yunyi to Lu Guo.

It was under the opportunity of Confucius's face-to-face teaching that Si Chi used his eloquence to reap immortal achievements in a few days, so that Confucius could obtain Yunyi without much effort.

After Confucius easily obtained Yunyi, the whole country of Lu was even more impressed with him, and Shusun Zhouqiu had nothing to say, so he had to send Yunyi to Confucius as agreed.

Confucius did not take the Yi as his own, but explained the whole process to the Duke of Luding, and strongly demanded that the last time the Yi be given to the state, and the Duke of Lu Ding would be managed.

How could Lu Dinggong accept this great gift at this time, he also expected Confucius to accept the other two capitals, if he accepted Yunyi at this time, it is estimated that it will make many ministers feel cold.

Lu Dinggong postponed it again and again, and Confucius said: "Yuyi has always belonged to the Lu State, and the public can take it whenever it is needed." ”

At the suggestion of Confucius, Si Chi was appointed as the new head of the household, and cooperated with the people of the public family to manage the Yi.

Next it was Ji's turn. Under the governance of the Ji family, Feiyi had relatively progressive production relations and an increasingly prosperous economy, and Feiyi at that time was actually controlled by Feiyi Zaigongshan Bufu and his uncle and grandson.

Confucius had an advantageous condition, because his disciple Zilu had been sent here by him before and served as the head of the Ji family, which was actually equivalent to having the right to manage Feiyi.

Therefore, although Fei Yi was actually controlled by Gongshan Buwu and his uncle and grandson, Zilu was the nominal head of the retainers who followed Ji Huan.

Confucius resolutely and resolutely landed in Feiyi, which aroused the dissatisfaction of the Gongshan clan.

In the face of the army sent by the Duke of Lu, Gongshan Bufu and his uncle and grandson decided to avoid the real and make a preemptive strike, leading the people to attack Qufu, the capital of the Lu State, and frightened the Duke of Lu Ding to hide in the palace of the Ji family.

Unfortunately, Ji Jiang, the only son of Lu Dinggong, was killed by the enemy.

Hearing this, Lu Dinggong was shocked, angry and sad, and he couldn't afford to fall ill, so he ordered Confucius to preside over the matter.

Confucius was not chaotic in the face of danger, and ordered the doctors Shen Jusu and Le Qi to lead the division to crusade, and defeated Gongshan Bufu in Gujiao. Gongshan Buwu and his uncle and grandson fled to the state of Qi, and later to the state of Wu.

In this way, under the auspices of Confucius, Ji Huanzi and Meng Yizi led their troops to destroy the walls of Feiyi.

The two yils were abolished, and things seemed to be going very well, so Confucius wanted to take the Yiyi of the Mengsun clan again.

Unlike Gongshan Bufu, Uncle Sun and others, Gongyi Virgin has always been very loyal, and he said to Meng Yizi: "Destroy Yiyi, and the people of Qi will be able to reach the north gate of the border." The Yiyi is the guarantee of the Mengsun clan, and without the Yi, there would be no Mengsun clan. I'm not going to destroy it, you just have to pretend you don't know, and I'll come out against Kong Er. ”

Confucius is the second man in the family, and the word is also "Zhongni", "Zhong", which means second. Because among the boys in the family of Confucius's uncle Liang Su, Confucius is the second oldest, and the gang is often nicknamed "Confucius's second child" by some people.

Meng Yizi agreed to his father, but he turned a blind eye to this matter, as if he let Confucius deal with him.

In fact, Meng Yizi, Ji Huanzi and Shusun Zhouqiu had already changed their minds to support Su Sandu at this time, because they were afraid that the office would be strong, so they often discussed how to obstruct the move of Jun Yiyi and jointly fight against "Kong Lao Er".

How could Confucius not perceive this change, and now the question is whether he will continue to defend the three capitals in the face of the world's disapproval, or will he maintain the status quo and slowly try to do so?