Huangdi and Yan Di are called the ancestors of the Chinese nation and the leaders of Chinese tribal alliances. Go down in history with his great achievement of unifying the Chinese nation for the first time. He planted hundreds of plants and trees, vigorously developed production, created characters, started making clothes, built boats and cars, invented compasses, fixed arithmetic, created melodies and created medicine. He is the ancestor who initiated the ancient civilization of the Chinese nation. Legend has it that in ancient times, the country of the Chinese nation was the head of the five emperors. According to legend, the Yellow Emperor surnamed Gongsun was born in Qufu, Shandong Province, and lived in the hill of Xuanyuan, hence the name Xuanyuan (Tiannian). He grew up in Jishui, so he took her as his surname. Later, he established a country in Xiong You (Xinzheng), so he was also called Xiong. He regards soil as king and soil as yellow, so he is called the Yellow Emperor. The Yellow Emperor is a legend in ancient history. The most wonderful story about him is the war between the Yellow Emperor and Yan Di and Chiyou. In the end, the Yellow Emperor won the victory and was acclaimed as the leader of the tribal alliance by all tribes. During the period of the Yellow Emperor, sericulture, boating, writing, temperament, medicine and arithmetic were all invented first and then developed. His contribution has been praised by later generations, and he is known as China's "ancestor of humanity".