Liu is one of the surnames in China, ranking 252nd among hundreds of surnames. In the history of China, Liu is the surname with the largest number of successors to the throne. In ancient China, there was a saying that "Liu Tian Xia, Li Bian", while in northern China, there was a saying that "Zhang Wang Li Zhao is everywhere". Liu is also distributed in Korea. In addition, according to the existing records in Japan, Liu, whose third surname is Gao Qiao from China, is a descendant of Liu Bang. According to 1977, a paper on "surnames" published by China historians in Oriental Magazine, Liu is one of the top ten surnames of Chinese people in the world.

Liu surname source:

1 from, surnamed Qi, after Emperor Yao (Xun), he was sealed in Liu (now Tangxian County, Hebei Province) and established Liu's family, which later generations thought was the surname. Liu Lei, a descendant of Sun, can train dragons to serve. Kong Jia, the 13th emperor of Xia Dynasty, gave him the name of Yulong. This is Qi surnamed Liu. Historically, Liu is authentic.

2 From the surname of Qi, in the early Western Zhou Dynasty, King Wu collapsed and became Wang Li (BC 102 1). The Duke of Zhou assisted the imperial court, and Tang (the descendant of Liu Lei) colluded with Yin Wuyue and was punished by the Duke of Zhou. Change the name of the Tang Dynasty to (now southwest of Shaanxi Province), build Du State, and become the last monarch. His grandson, a scholar-bureaucrat in the Jin Dynasty, went to the Qin State because of domestic unrest, and later returned to China, but his son stayed in the Qin State, and the descendants who stayed in the Qin State restored Liu's surname.

3 from the surname Ji. There are two sources: one is the descendant of Zhou (the father of the ancient duke). In the early years of the Western Zhou Dynasty, Ji Wang's son (uncle) was established in (now Liu Ju in the southwest of Yanshi, Henan Province, which was named after Liu Lei's former residence), and later generations took the city name as their surname, forming her surname Liu. In addition, during the Eastern Zhou Dynasty, Ji Wang of Zhou Kuang sent his youngest son to Liu Yi to establish Liu Guo, known as Liu Kanggong. Their descendants also take the country as their surname, which is another source of Liu's surname. The two descendants of Liu and Ji have no obvious family background.

Liu's surname is Yi. According to expert research, the global population of Liu is 64.56 million, which is called "Liu is everywhere". The Liu Han Dynasty lasted for 426 years, and the population of Liu in the Western Han Dynasty was 10, accounting for a considerable proportion of the country's total population of more than 50 million. At that time, it had become the most popular name.

Since the late Ming Dynasty, people from Fujian, Guangdong and other places have moved to Taiwan Province Province, and then many people went overseas to make a living.