The origin of surname division

1. When Shennong was the leader of an ancient tribe, there was a minister specializing in divination named Siguai, and his descendants took Gu Si as their surname. See Yuan Ming Pao.

2. In the Spring and Autumn Period, there was a doctor named Zheng whose grandson took his ancestral son as his surname. It is a branch of the company. See Zuo Zhuan.

3. During the Spring and Autumn Period, there was a doctor in the State of Jin called Uncle Hu, who was sealed in the State of Zhi and established the State of Zhi. Later, there was Qing Chen and later his surname. See Tongzhi-A Brief Introduction to Clans.

4. In the Spring and Autumn Period, there was a count named Cheng Bo, Guo Cheng. When he divorced his father, he was Sima of the Zhou royal family and was awarded the title of official, so his descendants were surnamed Si. See Business Travel Record.

5. In the Spring and Autumn Period, Wei State had a son Ying, whose descendant was Wei Sikou, and later generations took the official as their surname, and later changed it to a single surname. See shiben

6. In history, the descendants of Si De and Si De, who had a compound surname, were also changed to Si, a single surname.