In the prehistoric era after the beginning of the world, the three realms were not separated, the energy of Hongmeng had not yet completely dissipated, ferocious beasts were rampant, gods and demons were everywhere, the major innate gods (such as Sanqing, Nuwa, Fuxi, etc., Transformed by Pangu Yuan Shen) first appeared, tribes were numerous but the weak were the strongest, the concept of "Tao" had not yet been clearly defined, and everything was trying to figure out how to survive and evolve.