The following is the history of Jeongkook.

In the twenty-second year of his reign, King Xuan of Zhou conferred the title of Prince Friend in Zheng (near Hua County, Shaanxi), and after his death, Prince Friend was posthumously named "Duke of Zheng Huan".

Zheng Huan was in the thirty-third year of the government, and King Zhou You appointed him as Situ. At that time, Zheng Guo had become the most prosperous and wealthy country in the Gyeonggi region, and the lives of the Zheng people were very different from those of the Zhou people. The Zhou people's yearning for Zheng Guo deepened their dislike of the royal family, and their love for Zheng Huan deepened their hatred of King Zhou You, so many people left Hojing and ran to Zheng Guo.

A year later, the Western Zhou Dynasty was in decline and could not be traced. Zheng Huan Gong thought that a catastrophe was coming, and it was not a pity for him to die, but he couldn't let the people of Zheng Guo follow that whore to hell. He then asked Taishi Boyang for advice on where to move the country.

Boyang replied that he should move between Yu and Yi, on the grounds that the monarchs of the two countries were greedy and promiscuous, and had already appeared to be ruined. As long as Zheng Bo deposited the treasure in the two countries - the two monarchs coveted interests and wanted to tie up with important ministers, he would definitely give up the land for the Zheng people to live in. After Zheng Guo moved in, the people of the two countries were disgusted with the faint monarch and would definitely defect to Zheng Guo.

Zheng Huan Gong also asked whether the area around the Yangtze River or the west of the dynasty was suitable for the country. Boyang replied in the negative, he said: "In the past, Zhu Rong served as the Huozheng of the Gaoxin clan, and he was able to make great contributions to the world. The state of Chu is a descendant of Zhurong, and the state of Chu will inevitably rise if the Zhou declines. If the state of Chu rises, the state of Zheng will fall. As for the West, it is full of Rongdi, and people are greedy and profitable; Only half-orcs like Qin Rong can survive, and the Huaxia people can't live for a long time. ”

In the end, Zheng Huan asked which countries could rise after the decline of the dynasty. Boyang said: "Probably Qi, Qin, Jin, and Chu!" Qi is a descendant of the Four Mountains and a descendant of Boyi, who once served as the ceremonial official of Emperor Yao; Qin is after Bo Peng, and Bo Fei assists Emperor Shun to subdue the soft beasts; The ancestors of the Chu State also contributed to the world; Shu Yu was sealed in the Tang Dynasty, and his place was dangerous, so he was virtuous. The royal family is declining, and these four kingdoms are bound to rise. ”

Gong Zheng Huan adopted Boyang's suggestion and persuaded King You to move the country to Xinzheng in Henan, and the two monarchs of Yu and Yi set aside more than ten small cities, and the Zheng people settled there.

In the second year of Zheng's eastward migration, Haojing fell, Zheng Huan Gong died in battle, and Zheng Wugong succeeded to the throne.

When King Zhou Ping moved east, Shenhou, an old political hooligan, in order to consolidate his political position, cheekily begged King Ping to be a matchmaker, so that he could marry a daughter who had not yet grown up to marry Zheng Wugong as his wife. In this way, the father-in-law who killed his father-in-law showed his son-in-law a sincere and reconciled attitude.

Zheng Wugong believed that being an enemy of Shenhou would do all kinds of harm and no benefit, and he would first use all political resources and armed forces to destroy Yu and Yi, so he accepted the other party's good intentions. At this time, Princess Shenguo, who was to be married, was still a five-year-old little girl who jumped up and down every day, and Zheng Wugong married her ten years later.

In this way, from the patrilineal aspect, King Zhou Ping is the cousin of Zheng Wugong; From the matrilineal aspect, King Ping is the cousin of Duke Wu again.

Zheng Wugong used his fame and virtue to attract the people of Yu and Yi. On the surface, he is like a brother to the monarchs of the two countries, but secretly he is collecting the crimes of the two. Duke Wu succeeded his father as the secretary of the royal family, and his power was huge enough to mobilize the royal army. When the evidence in his hands was enough to kill the two kings, he used the king's division to destroy the two kingdoms.

The first son of Zheng Wugong and his wife Wu Jiang was called "Kou Sheng", which was later Zheng Zhuanggong. It turned out that Wu Jiang suffered a difficult birth when he gave birth to him, and this newborn was born upside down - the way he was born indicates that he was born a person who didn't know what "rules" were. Wu Jiang was really in pain at that time, so he gave him such a name that was not very nice but very appropriate.

Wu Jiang found a witch to do divination and asked him if this child was sent by heaven to restrain him. The witch's character was worse than his divination; He not only replied in the affirmative, but also slandered Kou Sheng with added fuel and vinegar, saying that he was possessed by Zheng Huan Gong and was preparing to seek revenge on her.

Wu Jiang firmly remembered the last sentence, and from then on, she no longer regarded Kou Sheng as her own flesh and blood, but regarded him as a murderer who murdered her.