The first statement:
1, after Chu Shi in the Spring and Autumn Period, the official name was taken as the surname. According to the "Tongzhi Imperial Clan: Taking the Official as the Surname", "The son of Song Gonggong, a descendant of Yin (Shang), eats Chu and is a teacher, so he is named." During the Spring and Autumn Period 3000 years ago, Chu and Hou went their separate ways. At that time, many local governors had an official position called "Chu Shi", which was equivalent to the present county mayor. Among them, the Duke of Song Dynasty, one of the leaders at that time, appointed his son Right as Teacher Chu, so the descendants of Right took Chu as their surname. The origin of Chu surname,
2. Since the Zhou Dynasty, there has been a land of Chu, where residents take place names as their surnames. There is also a simple way to say that the surname of Chu is based on the place of residence. According to the origin of surnames, there was a place called Chu in ancient times, and local residents took Chu as their surname. According to Zuo Zhuan, there is a Chu Pavilion in the south of Luoyang County. There is also a record about the Chu Canal in Luoyang in the Records of the Counties and Countries in the Later Han Dynasty. The two books also think that this is the proof that "Zhou has Chu land, and the residents think his surname". From this point of view, the Textual Research on Surnames says that "there was a place in ancient times, and those who lived in it thought it was a surname", but it is also well-founded. Chu surname can be traced back to Henan in the Spring and Autumn Period, but it is recognized by people.
The second statement:
1, from the son's surname, the surname was named after the place name after the Song Gongzi Festival in the Spring and Autumn Period. According to Wan's genealogy, genealogy, etc. Chu's surname comes from Zi's surname and was originally descended from the royal family of Shang Dynasty. During the Spring and Autumn Period, when the son of Song Guogong was named Duan Zi, he ate in Chuyi (now Luoyang City, Henan Province). Because of his virtue, he is called Chu Shi. His descendants took the surname, became Chu Shi's, and later took the teacher's name as Chu's surname.
2, from the official as the surname. During the Spring and Autumn Period, Song, Wei, Zheng and other countries set up Chu teachers' officials, called city orders, in charge of market trade. At that time, there was a custom of taking the official as the surname, and the descendants of Guan often thought it was the surname. After the provincial division was renamed Chu, it was called Chu.