Both Huangdi and Yandi lived in the late primitive society of China more than 4, years ago, and they were the leaders of two tribes. At that time, both Huangdi tribe and Yandi tribe lived near the Yellow River in Shaanxi Province. Later, it moved to the east along the banks of the Yellow River. In order to compete for a piece of land, a war broke out in Jiuli nationality, where Yandi nationality lived in the east of China. Chiyou, the leader of Jiuli nationality, defeated Yandi nationality. Yandi asked the Yellow Emperor for help, and they united to defeat Chiyou.
After the defeat of the Jiuli nationality, some of them fled to the south, while others joined the Yanhuang nationality. Later, the Yandi clan and the Huangdi clan also clashed. After the Yandi clan failed, it joined the Huangdi tribe, and the Huangdi clan became more powerful. Since then, part of the Huangdi, Yandi and Jiuli ethnic groups have settled down in the Yellow River valley and flourished, forming the backbone of the Huaxia ethnic group.
Together, they developed the middle and lower reaches of the Yellow River, making it the cradle of ancient culture in China. From then on, the residents of different tribes thought they were descendants of the Yellow Emperor and Yan Emperor, and called themselves "descendants of the Yellow Emperor".
Extended information:
The story of Yandi and Huangdi:
Yandi and Huangdi joined forces, and the final result was a crushing defeat of Chiyou. This was originally a gratifying thing, but for various reasons, there was a war between Yandi tribe and Huangdi tribe after that. The final result ended in the failure of Yandi tribe. After the victory of Huangdi tribe, they settled in Yandi tribe, but they did not kill the population of Yandi tribe and let them live freely.
So the tribes merged together, and the Yellow Emperor became the sole leader of that tribe. However, since many local people were descendants of the Yandi tribe, later people will call themselves descendants of the Yellow Emperor. This is also people's understanding of the relationship between Yandi and Huangdi.
Baidu Encyclopedia-Yandi
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