Pangu created the world, chaos dawned, but darkness ended and everything was silent. Nuwa was unwilling to be lonely in the world, so she made people out of clay to fill the void. However, as soon as humans came out, the soil was fertile, all things came into being, the heaven and earth changed, and they were divided into three realms, with demons, gods, and humans each occupying one realm. The material resources of heaven and earth are tilted. Demons and gods occupy two realms, the most powerful, and humans are the weakest between them. Therefore, the human realm has become a place for hunting. Nuwa was deeply worried and afraid, and could not bear the encroachment of the human world, so she entrusted her life to future generations to protect the human world.