The descendant of Zeng Jianguo was born in Liu.
At that time, Xia Houshi's sixth grandson Kong Jia was Xia Wang, who was good at ghosts and gods.
Legend has it that the Kongs can't keep two dragons, one female and one male. Liu Lei, a descendant of the Taotangs, learned Rao Long from the Chilong family.
Qianlong's livestock dragon was given a surname for serving Shun Di.
And Liu Lei, who studied in Rao Long and worked for the Confucius family, is also named Yu Longshi.
By the Western Zhou Dynasty, the descendants of Liu Lei had established the Tang State, and they were called Tang Du's.
After the destruction, he sealed his brother Yu in the Tang Dynasty and moved to the Tang Dynasty as Du Bo.
In Zhou Xuanwang, Du Guo was destroyed again, and Du Bo, Chow Tai Fook's doctor, was also killed innocently.
Most of Du Bo's descendants defected to other princes, while those who stayed in Ducheng took Du as their surname.
Some scholars believe that Du's descendants are post-ancient Du Kang.
According to legend, Du Kang was a native of the Yellow Emperor in ancient times and was good at making wine.
If Du Kang is the ancestor of Du surname, then this surname has a history of at least four or five thousand years.
In addition, in the post-Wei era, some northerners changed their Dugu mixed surname to Du's.