People who die harboring resentment become ghosts. Animals become demons after a thousand years, while plants become spirits through cultivation. Those who cultivate for ten thousand years become fiends. The world is vast, and nothing is too strange to exist. All kinds of demons and monsters run rampant in the mortal realm. To resist them, humanity developed its latent abilities, known as spiritual power, and used it as the basis for formations, sorcery, and incantations to fight back against the demons. In order to eradicate them once and for all and seek out powerful strength, there is the Yin Yang Tomb.
