1, from the surname Ji, is a descendant, and takes the country name as the surname. According to the Book of the New Tang Dynasty, the Prime Minister's Lineage Table, Zhou Wuwang made great efforts to enfeoffment princes after negotiating with Shang Dynasty, and his second uncle was sealed in the branch country. According to the Guang Yun, in the early years of the Western Zhou Dynasty, Zhou Wuwang named his second son (called the third son) Zhi (the old city is in Zhi Town, northwest of Qinyang, Henan Province), which was called Zhi Shu. Later, the descendants of the uncle took the country as their surname, and some took the branch as their surname; Some people go to town to take the surname Yu, for the sake of Henan. Historically, surnames are authentic.

2. Since ancient times, Chunyu's surname has been changed by Tang Xianzong. According to the dialectics of ancient and modern surnames, the descendants of Chunyu take the country name as their surname and are called Chunyu's surname. During the Zhenguan period of the Tang Dynasty, the royal family had seven surnames, including Chunyu. To Li, in order to avoid taboo ("pure" and "chun" homophonic), the compound surname Chunyu was changed to single surname Yu. In the Song Dynasty, some Yu surnames were restored to Chunyu surnames, while others remained unchanged, forming a branch of Yu surnames.

Hundreds of surnames:

Hundreds of Surnames is a work about China's surname. According to documents, it was written in the early years of the Northern Song Dynasty. The original surname was 4 1 1, which was later supplemented to 504, including 444 single surnames and 60 compound surnames.

"Hundred Surnames" uses four fonts to arrange surnames, and the sentences rhyme. Although its content is not artistic, it has played a great role in the inheritance of China surname culture and the understanding of China characters, which is also an important factor for its spread for thousands of years.

Hundreds of surnames, together with San and Qian, are also called "three thousand", which is an enlightenment book for children in ancient China. "Qiansun" became the top four among hundreds of surnames because hundreds of surnames were formed in the Song Dynasty, so Emperor Zhao of the Song Dynasty, King Qian Chu of China, Princess and Li, the founding emperor of the Southern Tang Dynasty, became the top four.