2. Chu surname is the son surname. After Yin, there was a man named Zi Shi in Song Dynasty, who was Chu's teacher, so he took Chu's teacher as his surname. Later generations omitted the teacher, so he was Chu's, and so was the nursing home of Teacher Chu, the doctor of Wei. This is from Zheng Qiao's Tongzhi Imperial Clans. According to Zuo Zhuan, "Wang Su is in the Chu family", "National Records of Houhan County" and "There is a gathering of Chu family in Luoyang". In the Qing Dynasty, Chen Tingwei thought that there was a Chu family in a week or so, and those who lived there thought it was their own home, looking out of Henan.
3. During the Song Dynasty, there were about 28,000 Chu surnames, mainly distributed in Hebei, Hubei, Anhui, Jiangsu, Zhejiang and other places. During the Ming Dynasty, the surname of Chu grew to 32,000, when Zhejiang, Jiangsu, Shanxi and Hebei were relatively concentrated areas. In 2006, the population of Chu surname was about 360,000, which was the 225th most popular surname, accounting for 0.029% of the national population. In 20 13, the total population of Chu family ranked 20 1. At present, the largest province with Chu surname is Zhejiang, accounting for about 18% of the population with Chu surname in China. Zhejiang, Liaoning, Shandong, Jiangsu and Henan are the main distribution areas of Chu surname, and the five provinces account for about 59% of the population of Chu surname in China. Secondly, it is distributed in Hebei, Hubei, Shanghai, Shanxi and other provinces and cities.