At the beginning of chaos, yin and yang are divided, the yang is transformed into all things, and the yin is the primordial spirit. Time flies, all things are accumulated, even the primordial spirit, and the living soul is born. Grass, trees, earth and stone can sense the monster of the original spirit, and the beast and bird of prey can sense the spirit of the demon, among which the elders of all things are called people, there are monsters and then there are people in the world, and the human race has gradually risen and the demon race has declined for thousands of years. But some people's desires are high and become demons, and people who are destroyed and delusions are not extinguished are ghosts. Although the demon clan is defeated, the demons and demons come out again, and the demons and monsters in the world are roaring rampant, trying to subvert the heavens and the earth, from ancient times to the present. Demon hunters are the elite of human beings, slaying demons and protecting the human race, if you want to become a demon hunter, you must first have your own - demon suppression book!