Jiao (Jiāo) has four surnames: 1. In ancient times, he was a descendant of Shennong and took the country as his surname. According to Tongzhi Genealogy, Guang Yun and Historical Records, after the founding of the People's Republic of China in the early Western Zhou Dynasty, the descendants of Shennong took Jiaoguo as their surname and established Jiaoguo (Jiaocheng, a hundred paces northeast of Shaanxi Province in later generations), which was destroyed by the State of Jin in the Spring and Autumn Period. Their descendants took the country as their surname, so they thought it was their surname. 2, from the surname Ji, taking the country name as the surname. According to Guangyun, in the Zhou Dynasty, there was a royal family with the same surname as the vassal state of diplomatic relations (the old city was Jiaocheng in the south of Shan County, Henan Province), which was later destroyed by the State of Jin, and the original royal family of diplomatic relations took the country name as their surname. 3. From Jiang's family, taking the place name as the surname. During the Spring and Autumn Period, Xu (that is, Jiang Ning, the monarch of the State of Xu in the Spring and Autumn Period: 5865438 BC+0- 547 BC) moved to Jiao, and later took the place name as his surname. 4. Changing the surname from other nationalities: ① According to Tong Jian, Nan 'anjiao's surname comes from Miao nationality; During the Sixteen States of Jin Dynasty, the Miao people established the regimes of "Enemy Pool", "Pre-Qin" and "Houliang". (2) According to the records of Huayang Guozhi, the 14 surnames in Nanzhong have their own emphases, not one school; ③ There is a Jiao surname among Xixia people; (4) The Eight Banners of Manchu in Qing Dynasty were named Dangjia's, and later changed to Jiao; Today, Manchu, Tujia, Mongolian, Buyi and other ethnic groups all have this surname; ⑤ According to Huayang National Records, there was a Jiao surname and another school among the ethnic minorities in ancient South China (now south of Dadu River in Sichuan Province and Yunnan-Guizhou Province). Jiao Bo, the ancestor of this surname, is a descendant of Shennong. Jiao's family began in the Zhou Dynasty and has a history of more than 3,000 years. It is one of the ancient surnames in China and one of the most popular surnames in Nanyi. In the early years of the Zhou Dynasty, Zhou Wuwang tried his best to enfeoffment governors, including not only heroes and royalty, but also previous sages. After investigation, he found the direct descendant of Shennong, sealed it in diplomatic relations and established diplomatic relations. Because he is an earl, he is called Jiao Bo in the world. During the Spring and Autumn Period, Jiaoguo was annexed by Jin, and later generations took the old country as their surname and called Jiaoxing. They regard Zun as the ancestor of Jiao.