At the beginning of heaven and earth, all things had laws of life and death, and life was limited. Therefore, the ancestors wanted to understand the movement of life and death of all things, and discovered their secret places to realize immortality. Therefore, they became one of the worlds - Dao, and then Dao was divided into three parts, divided into the Heaven of Nirvana, the Heaven of Lihen, and the Demonic Path.
The way of heaven is unchanging but people's hearts are fickle. The way of demons tries to maximize human's six desires and seven emotions and enter the Tao through extremes. However, once the Demon Ancestor died, the shackles were gone, and the demons danced wildly. From then on, there were constant disputes, and the world was bleeding...