How did the first surname come from?

In order to avoid consanguineous marriage and realize prenatal and postnatal care, Fu invented the surname and took it as "Feng", so "Feng" became the first surname in China. Surname is a special symbol to distinguish clans. Humans first lived in matriarchal society, and the surnames of China people trace back to their roots, which are all related to matriarchal society and Nu Wa. The surname is a word of recognition, the left is a woman, and the back is a student. Together, surnames are women's patents, so there are some oldest surnames in China with women's words beside them. For example: Ji, Jiang, Win, Yi, Pregnancy, Yi, Yi and Yao. Legend has it that all clans in ancient China had different surnames. For example, Huangdi is Ji, Yandi is Jiang, won, and Tai Hao is Feng. According to Shuowen, the Yellow Emperor originally lived in Jishui, so his surname was "Ji". In ancient times, the Yellow Emperor was the leader of Xuanyuan tribe, and both he and his surname "Jiang" came from Shaodian. After a half-spring battle (half-spring is in the southeast of Zhuolu, Hebei Province, so it is also called the battle of Zhuolu), Yan Di was defeated and merged into the Yanhuang tribe. Therefore, the Chinese nation calls itself "descendants of the Yellow Emperor". Then, the Yanhuang tribe led by the Yellow Emperor defeated Chiyou, the leader of Jiuli nationality. The Yanhuang tribes led by the Yellow Emperor are all surnamed Ji. They are the distant ancestors of today's Chinese people, and also the distant ancestors of Ji's surname. In the Zhou dynasty, the royal family also had Feng Guolu, Jin, Deng, Wei and so on. They are all surnamed Ji, while the different surnames Feng are Jiang's, Qin's, Chu's and Song's.