The Eastern Emperor Taiyi was an ancient god in Chinese mythology. He was believed to be the grandson of the God of Chaos, one of the emperors bestowed by the Heavenly Emperor, and also the Haotian God in Taoist thought. However, in later Chinese mythological novels, the Eastern Emperor Taiyi's mention rate was relatively low. One of the possible reasons was that the image of the Eastern Emperor Taiyi in the primitive myths was not widely recognized. In some legends, the image was given some different characteristics from the primitive myths. For example, in the Classic of Mountains and Seas, the Eastern Emperor Taiyi was regarded as the Sun God, but in some versions of the legend, he was regarded as a Yin God. This may have led to him being given different settings and images in later mythological novels. Another possible reason was that the Eastern Emperor Taiyi was given some characters related to Taoism in later mythological novels. For example, in some novels, he was regarded as the representative of Taoism, while in others, he was portrayed as a mythical figure who controlled the universe. These possible factors could cause the role of the Eastern Emperor Taiyi to be reduced or blurred in later mythological novels.