King Wu collapsed, and the prince was young and still in infancy. Zhou Gongdan was worried that King Wu would collapse and the princes of the world would rebel, so the regent exercised the monarchy. When King Wu's younger brothers saw this, they all said that Duke Zhou would definitely be unfavorable to the prince, and he wanted to be the son of heaven. Zhou Gongdan then set up the crown prince as the king of Zhou Cheng, and he assisted the king of Cheng, and let his eldest son Bo Yu go to Lu to serve as the monarch, as a barrier to defend against the barbarians such as Xu Rong and Huaiyi in the east.

Wu Wangfa's younger brothers, Uncle Guan and Uncle Cai, were suspicious of Zhou Gongdan, so they made trouble with Wu Geng, the descendant of King Shang, and wanted to get rid of Zhou Gongdan. At the same time, Huaiyi and Xu Rong rebelled in the east. Qi Taigong and Lu Gongbo sent troops to suppress it. And Zhou Gongdan coerced the teacher of the Son of Heaven and also pacified the rebellion of Guan Cai.

The Duke of Zhou took over the monarchy for many years and built Luoyi, so he moved the capital to Luoyi, that is, Chengzhou. As the founding hero of the Zhou royal family and a relative of the royal family, the Duke of Zhou has done his best to do everything for the Zhou Dynasty since he assisted King Wu of Zhou. During the administrative period, he was also conscientious and did not dare to slack off in the slightest, and the Duke of Zhou himself admonished the uncle who went to the feudal country to say so: I am the son of King Wen, the younger brother of King Wu, and the uncle of King Cheng, and I am not humble in this world. However, when I wash my head once and hold my hair three times, eat a meal three times, spit out food, and get up to receive scholars, I still worry about losing the sages of the world. After you arrive in the country of Lu, don't be proud of people because you have a land.

Later, Zhou Gong was seriously ill, so he left a message saying: After I die, I must be buried near Chengzhou, and I dare not leave Chengwang at all. After the death of the Duke of Zhou, King Cheng buried the Duke of Zhou in Bi, which was the place where King Wen was buried. King Cheng used this to show that he did not dare to take the Duke of Zhou as his courtier, so he could only let the Duke of Zhou follow King Wen. Zhou Gong's life is probably a true portrayal of "doing his best and dying".

King Cheng remembered that Zhou Gong's merits were outstanding, so he ordered that Zhou Gongdan's Lu State should have the qualifications to worship King Wen in the suburbs and play the music of the Son of Heaven.

After King Wu of Zhou destroyed Yin Shang, he sealed the ruins of Shaohao to the Duke of Zhou, and the country name was Lu. Duke Zhou did not go to the fief to settle down because he assisted the king, so he asked his son-in-law to go to the fief to settle down. Bo Yu also became the actual founding monarch of the Lu State. Before he set out, Zhou warned him that he should be humble to the corporal and not lose the hearts of the people because of arrogance.

After Bo Yu arrived at the feudal country, he took Qufu as the capital of his feudal country, and then governed it according to the system and customs of the Zhou state. Because of the need to get rid of the old local customs, it took three years to complete the initial stabilization, and then returned to report on the political achievements on a weekly basis. When Uncle Guan and Uncle Cai joined forces with Wu Geng to make a rebellion, Huaiyi and Xu Rong in the east also raised troops and came to attack Lu. Bo Yu led the army of Lu to resist, fought for two years, and finally pacified Lu with the help of Zhou and Qi.

Bo Yu reigned for more than 40 years, insisted on using Zhou rites to govern the Lu State, and the King Cheng gave the suburbs of Lu the qualifications to sacrifice to the King Wen and play the rites of the Son of Heaven, so the Lu State laid a rich Zhou cultural foundation at the beginning of the founding of the country. In the later era of bad rituals, Lu Guo became the keeper and implementer of typical Zhou rites, and the world called Zhou rites all in Lu.

The Zhou Dynasty has always had the national policy of thick with the same surname and thin with different surnames, and King Cheng of Zhou gave the suburbs of Lu the qualifications to sacrifice to King Wen and play the rites of the Son of Heaven, which is not only a remembrance of Zhou Gongdan's merits, but also hopes that the Lu State, as a suzerain, can go there to work hard to expand the territory and be a loyal minister and good general of the Zhou royal family. This is the political advantage of the Lu state.

Destroy the rebellion of Guan Cai, quell the rebellion of Xu Rong, and the Lu State obtained the six clans of the Yin people. The people of Yin Shang, who were originally royal families, have a high level of education, and are also good at developing the economy. The country of Lu is located on the eastern coast, rich in important resources such as salt and iron. This is the economic and cultural advantage of the state of Lu.

The state of Lu has always been a strong vassal of the Zhou Dynasty, intimidating and managing the East, and giving full play to the role of the Zongbang. At this time, the state of Lu owned Turtle Mountain and Mengshan Mountain, and expanded its territory to the far east; Expanding all the way to the seaside country, the Huaiyi tribes belonged to Luhou. The national strength of the Lu State is so strong that there is no one in the country and the people of Yidi who do not obey the laws of the Lu State.

This continued until the Spring and Autumn Period, when many princes still made frequent pilgrimages to the state of Lu.

In history, there have been several incidents of abolishing the elder and establishing the young, killing the heirs, and the initiator can be traced back to King Xuan of Zhou.

Lu Zhengong died, and his younger brother Ao Li was the Duke of Wu. Wu Gong has the eldest son and the younger son. In the ninth year of Duke Wu, Duke Wu took his two sons to the west to worship King Xuan of Zhou. King Xuan likes drama very much, so he did a ridiculous thing, he wanted to make a drama as the prince of Lu State. Wang's doctor, Fan Zhongshan's father, said that this waste is not in accordance with the rules; If you don't follow the rules and you must do it, Lu Guo will definitely go against your will in the future; against your will; It is against your will, and that is to crusade; If you don't, your prestige will be detrimental. If it really develops to that point, it will not be good for everyone; Look, don't you give that order?

King Xuan of Zhou was very dissatisfied, he ignored the opinions of his ministers, and gave an order to make him the prince of Lu and the king of Lu in the future. Lu Wugong was a little depressed, and died after returning to Lu. So the prince was set up as Lu Yigong. Sure enough, Duke Yi was killed by his brother Kuo's son Boyu and the Lu people. Bo Yu was the king of Lu for 11 years, and was finally destroyed by King Xuan of Zhou. King Xuan of Zhou killed Bo Yu, and the younger brother of Liyi Gongxi called him Lu Xiaogong. From that time on, the prestige of Zhou Tianzi was declining day by day, and the vassal states killed their kings from time to time.