There are three origins of Jiang surname:
1, Yandi Shennong. Shuowen said, "Shennong lives in Jiang Shui because he thinks he is a surname." The legendary Emperor Yan, namely
Edit this paragraph: Emperor Yan Shennong's Shennong, according to legend, is one of the most ancient "san huang" in China history. Yan Di was born in Jiang Shui (now Qishan County, Shaanxi Province), so he took Jiang as his surname. Therefore, the birthplace of Emperor Yan is also the birthplace of Chiang Kai-shek. Jiang's surname began with Emperor Yan.
2, from the surname of Huan. According to "Tongzhi Clan Brief", "Genting Chang Tang Shang Yuan Zhong Zhun system was changed to Jiang's." In the Tang Dynasty, the surname of Huan was changed to that of Jiang.
3, from other ethnic groups to change their surnames. According to "Biography of Tugu Hun in Song Dynasty", there were Qiang people who changed their surname to Jiang in Song Dynasty. In addition, Jiang Jiashi of Qing Manchu Eight Banners was changed to Jiang surname; In addition, Manchu, Dong, Yao, Yi, Mongolian, Tujia, Baoan, Bai, Russian, Korean and other ethnic groups all have this surname.
Later in the course of history, due to various reasons, many descendants of Emperor Yan have changed to other surnames. On the occasion of Yu and Xia, Bo Yi, the grandson of Yan Emperor and the ancestor of Siyue Mountain, was sealed in Lu (now Nanyang County, Henan Province) for his meritorious service in assisting Yu in water control, and the Lu State was established, and the ancestral surname Jiang was given again to continue the incense of Yan Emperor.
Qi State, one of the five tyrants in the Spring and Autumn Period, was founded by Lu Shang of Lu State. Historical records say: "Lu Shang, surnamed Jiang Mingya, has made meritorious deeds in the four mountains, and his descendants follow the surname." Lu Shang, a descendant of Shennong's Jiang Taigong Jiang Ziya, was named Lu Shang because of his meritorious service in governing the four mountains. His descendants inherited the monarch of the State of Qi, who lived for the 29th time. Later, the State of Qi was destroyed by Tian He during the Warring States Period, and the State of Qi became Tian's regime. Its descendants lived in different places and took Jiang as their surname. In this way, the surname Jiang, who moved to various places, continued to multiply and develop, and by the Han Dynasty, it had developed into a big family.