According to legend, Qi is one of the surnames shared by the descendants of the Yellow Emperor, and is the descendant of the second son, Emperor Yao (Tao). Emperor Yao was first sealed in Tao Di and then in Tang Di, so it is also called the history of Tao and Tang Dynasties. Its nickname is Yao, and its history is called. Later, Qi was sealed in Liu Guo, which is now Baoding Tang County. His grandson took the country as his surname, and according to legend, his surname was Liu. Historically, Liu is authentic, and this is the surname of Liu in Qi State.

2. From Ji's surname

Zhou's descendants. According to legend, after Zhou Wuwang's death, Zhou Chengwang succeeded to the throne and named Wang Ji's son Yu. His descendants took the city as their surname, and Liu was passed down from generation to generation. During the Eastern Zhou Dynasty, Liu Kanggong, a member of the royal family, was appointed as Liu Guojun. This is Ji surnamed Liu.

3. Give the surname Liu.

Xiang Bo helped Liu Ji destroy Chu, so he gave his surname Liu. Liu Bang, the emperor gaozu of Han Dynasty, practiced the policy of closeness to others and married Yu Chanyu. According to the custom of Xiongnu, nobles all take their mother's surname, and Khan's descendants all take Liu's surname. So this surname Liu came into being.

4. Change foreigners' surnames

During the Wei, Jin and Sixteen Kingdoms period, a branch of Xiongnu claimed to be the descendant of the princess of Han Dynasty and Hun Shan Yu in order to win the support of the people in the Central Plains, and always used the mother's surname, so it was named Liu. Xia San regime was established in Shaanxi, Shaanxi and Inner Mongolia, and then settled in Henan. History is called "Henan Liu". Liu Yuan, the founder of the former Zhao Dynasty, was a Xiongnu aristocrat.

5. Change foreigners' surnames

Dugu is one of the "eight surnames respecting ministers" in the Northern Wei Dynasty. After Emperor Xiaowen moved his capital from Datong, Shanxi Province to Luoyang in the 20th year (494), he implemented the sinicization reform in 496, and changed the Xianbei nationality to Liu.

Baidu Encyclopedia-Liujiapu

Baidu Encyclopedia-Liu surname