It is recorded in Yuan He's Compilation and Tongzhi Genealogy that Li is the official surname. It is recorded in Yuanhe Shidian that Li was originally a descendant of Emperor Levin of Zhuan Xu, and Zhuan Xu gave birth to a great cause, and the great cause gave birth to a woman. The son of the girls' middle school was the courtier of Emperor Yao, and later ordered the people to take the courtier as their surname and change their surname to "Li". Li Zheng, a descendant of Hao Tao, offended Zhou Wang and was killed. When his wife Qi and his son Li Zhen went out to escape, they were starving, and they were saved after eating. Because of the old saying that Li and Li have contacts, they changed their surnames to "Li" in return for saving their lives.