Liu Lei is Yao's grandson. In his early years, Liu Lei learned the art of dragon dancing from his father. About 1879 BC, in the summer of Kong Jia's reign, Liu fell from the sky in Longdanggou, the southeast corner of Qilongcheng in Linying County, Henan Province. The Kongs sent Liu Lei here to raise dragons for seven years. Because of Liu Lei's meritorious service in raising dragons, Confucius named him Yulong Stone. Later, after the death of a female dragon, Tired processed the dragon meat into delicious food and gave it to the Kongs. After Kong Jia enjoyed it, he thought it was delicious and asked Liu Lei for food. Liu Lei was afraid of the dragon's death, and Kong Jia was held accountable. It was convenient for him to move to Lushan County, Henan Province to live in seclusion around 1873 BC, and his name was changed to "Qiu Gong", calling his seclusion "Qiu Gong". After Kong Jia knew about it, he stopped pursuing it, and the squire changed to Liu Lei, so Liu Lei's people took Liu's name and Han's name was Liu Xingsheng. [ 1]
Since the Han Dynasty, Liu Jian has established many unified or local separatist regimes, among which the Western Han Dynasty (15) and the Eastern Han Dynasty (14) are unified regimes. Other regimes that are recognized in history books but not unified are Xuanhan (Emperor 1), Southern Song (Emperor 9), Shuhan (Emperor 2) and Houhan (Emperor 2). Elsewhere, there are 16 Han kingdoms-Zhao Qian (5th emperor), Xia Guo (3rd emperor) and Nanhan (4th emperor). There are also 19 people who stand on their own feet as emperors in historical records (Liu Xin in the Western Han Dynasty, Liu Pengzi before the Eastern Han Dynasty, Liu Wang in the New Dynasty, Liu Yong, Liu Ziyu, Liu Wenbo in the Eastern Han Dynasty, Liu Ni in the Western Jin Dynasty, Liu Mang Party in the Western Jin Dynasty, Liu Xian and Liu Li in the Southern Song Dynasty, Liu Yixuan in the Southern Song Dynasty, Liu Xunzi in the Southern Song Dynasty and Liu Jinggong in the Southern Song Dynasty).
Since the Han dynasty, more than 500 people have been knighted and claimed to be kings (see the entry "Liu's vassal state")
Since the official of the Eastern Zhou Dynasty, Liu's surname has divided into more than 65,438+000 people, exercising the functions and powers of prime minister and deputy prime minister in various dynasties and places. (See Baidu Library "Liu Zhu Distribution")