Soon after the completion of Chengzhou, King Cheng of Zhou had the intention of moving the capital east to Chengzhou; However, due to the division of Zhou and Zhao, the plan to move the capital was shelved.

Later, King Cheng specially gave Xu Tian (now Xuchangnan, Henan) to the Duke of Zhou, and the Duke of Zhou built a palace in Xu Tian. In this way, he could easily travel back and forth between Cheng Zhou and Xu, dealing with the affairs of the Central Plains and the East. After the death of the Duke of Zhou, Xu Tian had no other meaning except as an enclave of the Lu State.

The royal family of the Western Zhou Dynasty has always carried out the ritual of sacrificing Mount Tai. There is a piece of land at the foot of Mount Tai called Qitian, and there is a palace of the Son of Heaven built in Qitian, which is the place where the king of Zhou bathes and fasts before sacrificing Mount Tai.

Yitian had always been under the direct jurisdiction of the royal family, but King Xuan of Zhou gave the land to Wang Ziyou. After the Western Zhou Dynasty moved eastward, Zhou Tianzi never sacrificed Mount Tai again (and it seems that it will not be in the future). Therefore, Gida has no other meaning than being counted as an enclave of Zheng Guo.

Since Yitian was close to the state of Lu, and Xu Tian bordered the state of Zheng, it was very inconvenient for both sides to manage the enclave, so Zheng Zhuanggong proposed to exchange land with the state of Lu.

The Lu doctors were divided, and the conservative representative Zang Aibo (Zang Xibo's son) believed that all the land under heaven belonged to the Son of Heaven, and the princes were just temporarily managing the fiefdom on behalf of the Son of Heaven; When the princes dispose of the land without authorization, they are usurping the royal power and making themselves the owners of the land; How other countries do things has nothing to do with Lu, but Lu must not set this precedent.

Gongzi Hui, a representative of the realist faction, said that both the Lu people and the Zheng people are subjects of the Son of Heaven, and the land is in the hands of the subjects and still belongs to the Son of Heaven; Xu Tian has had many wars in history, the country can not take advantage of the land, and it costs a lot to defend the land, so it is better to return Xu Tian to the royal family; Therefore, the exchange of land is not contrary to the Zhou etiquette, and it is conducive to regional stability, the country is fine, and the Son of Heaven will also be pleased.

Lu Yingong believed that Zheng Guoren's proposal was beneficial to both parties, so he adopted Gongzi Hui's opinion. Gongzi Hui also said that Xu Tian is larger than Yitian, and there is a temple of Zhou Gong, and the people of Zhou have to worship Zhou Gong here every year; The above problems should be resolved before the land exchange.

These problems were also what Lu Yingong was worried about, and he expressed Lu Ren's concerns to Zheng Ren and hoped to negotiate on the above matters. Zheng Zhuanggong sincerely hopes that the other party will not worry about this. He said that the value of Xu Tian was indeed greater than that of Qi Tian, and that the Zheng people would compensate the Lu people; Regarding the Zhou Gong Temple, the Lu people could move it away; If it is kept, it will be an honor for the Zheng people, and the Zheng people will continue the sacrifice to the Duke of Zhou instead of the Lu people.

The people of Lu then dispelled their concerns. In March of the eighth year of the reign of Lu Yin Gong (BC715), Zheng Guo handed over the map and household register of Yitian to Lu Guo, and promised to give the other party another rare treasure. However, due to various reasons, Lu Guoren has not fulfilled his obligations, and the deal was not completely completed until four years later.

Duke Qi had successfully mediated relations between Zheng and Song last year, and he wanted to bring Wei Guo into the alliance again this year, not only to normalize the relations between Zheng and Wei, but also to make the princes a community of interests.

The date of the meeting had been set, but when Song Yangong asked to meet with Wei Xuangong before the meeting, Wei Xuangong gladly agreed after receiving the benefits of the Song people. However, this private meeting aroused Zheng Zhuanggong's suspicion and dissatisfaction, and he believed that the two were plotting some conspiracy against Zheng Guo behind Zheng Ren's back.

The meeting was held in Wawu (northwest of present-day Wen County, Henan). As the monarchs sat together, Wei Xuangong first explained to Zheng Zhuang and Qi that he and Song had met in advance to discuss how to compensate Zheng for the damage caused to Zheng by the "Battle of the East Gate". Song Yangong nodded incessantly, adding that he had come up with the idea first.

At this moment, Zheng Zhuanggong felt that his eyes were moist; Later, he said to Saizu: "The widow's heart towards the Song people did soften at that time—but only then. ”

Since Wei and Song took the lead in expressing their sincerity for reconciliation and concessions, it was difficult for Zheng Zhuanggong to make any more excessive demands. The multilateral talks went very smoothly, and all parties involved thanked Qi Xigong for his efforts for peace in the Central Plains.

This meeting earned enough face for the Duke of Qi, who was called "Little Uncle" because he convened and presided over two meetings of the princes' alliance.

While trying to establish his prestige in the Central Plains, Duke Qi also collected many incriminating evidence about Ji Hou, including life corruption, incest, collusion with Yidi, and disturbing Huaxia (although the first two crimes committed by Qi Duke were also in the hands of Ji Hou).

Duke Qi wanted to go to King Zhou Huan to sue Ji Hou fiercely, so as to arouse the anger of the Heavenly King, and take the opportunity to crusade against Ji Guo.

But as mentioned earlier, there are strict restrictions on the princes meeting Zhou Tianzi, and even the Duke of Qi cannot meet Zhou Tianzi anytime and anywhere. Qi Duke then found Zheng Zhuang Gong and asked him to be his guide; Zheng Zhuang Gong led Qi Duke to meet King Zhou Huan as a dynasty secretary.

The king of Zhou seemed unimpressed by the accusations that Qi Gong had fabricated—at least he was more extravagant and debauched than Ji Hou in life. "If drunken dreams and deaths are also punished, then there are more people who die in front of Ji Hou! The situation in the east is stable, Dongyi does not dare to make a mistake, and Ji Hou has made great contributions; I don't want war to happen, so my uncle shouldn't want it, right? He said to Qi Hou. The chaos in the Central Plains had already stirred him up, and he didn't want another war in the east.

At this time, the new favorite of the royal family, Duke Lin's father, had been appointed as the right secretary, and Zheng Zhuang Gong became the left secretary; He has only half the power in his hands. Although Duke Yu Lin's father took the initiative to talk to Zheng Zhuanggong, Zheng Zhuanggong didn't even look at him.

In the winter, the Duke of Qi sent an envoy to the state of Lu to inform the princes of the results of the meeting of the tile houses. On behalf of Lu Yingong, Lu Dafu Zhongzhong said to the envoy (because the status of the envoy was too low to be received by Lu Hou): "The prince made the three kingdoms abandon hatred and stabilize the people's livelihood in the three kingdoms, and these are all favors from the prince. When the widow heard your announcement, how could he not feel the yin virtue of the prince? ”

After the Qi envoy left, the son of the doctor of Lu Guo died without a hack. Gongzi Hui asked Lu Yin Gong to give the Wuxiao family a "clan". Yin Gong asks Zhongzhong about the rules of the Shi clan. Zhong Zhong said: "The Son of Heaven has a surname because he was born, and the feudal and virtuous people are princes, and they are given land as their clans; Therefore, only the Son of Heaven is qualified to take the surname, and the princes can only be called by the name.

"There are three ways for the descendants of the princes to obtain the clan clan: first, the son of the prince is called Gongzi, and the son of Gongzi is called Gongsun, and the son of Gongsun can no longer be called Gongsun, and can use the words of grandfather as clan, such as Zang and Zhong; Second, you can take official positions as clans, such as Sikong and Sima; Third, it can be used as a fief, such as Fei's and Luqiu's. ”

Lu Yingong said: "Uncle Zizi Zhan, just give his family the Zhan family!" ”