Abstract: In ancient times, many different tribes lived on the land of China, and there were countless legendary ancestors and tribal heroes; the "Viewpoint of Heavenly God" in the Xia, Shang and Zhou dynasties opened the prelude to the transformation of legends into history, and it also laid the foundation for the five-emperor system. The five elements culture and the five orientations concept boosted the five emperor system of "the unity of man and god" during the Spring and Autumn period and Warring States period. The five emperors were Taijun, Yandi, Huangdi, Shaojun and Zhuanxu in this period. In the Western Han Dynasty, Records of the Historian written by SIMA Qian Chose Huangdi, Zhuanxu, Diku, Yao, Shun as the five emperors, clarified their "blood relationship" which completely transformed them from the tribal ancestors and heroes of the legendary age into holy human kings. The five-emperor system formed eventually.