Demons are creatures in the world that are neither humans, nor objects, nor grass, trees, or livestock. The demon soldiers who have transformed into human beings for hundreds of years, the demon generals who have confused the world for thousands of years, the demon king who has been through tribulations for ten thousand years, and the demon emperor who has destroyed the world for hundreds of millions of years... The emperor knows the cause and effect, and does not enter the world of mortals. He will use his soldiers to mess up the world as he pleases.
Thousands of years ago, the demon emperor retreated into seclusion and meditated. The demon king was rare in the world. The demon general proclaimed himself king in secret, and the demon soldiers caused cholera in the world. When the war started, the Demon Emperor did not come out, the Demon Lord did not say anything, and the world was in chaos.
In troubled times, spiritual masters rise. Human cultivators call themselves spiritual masters, and when they gather together they are called a demon house. The good demons are collected and become demon spirits, and the evil demons are destroyed to bring peace to the troubled world.
The troubled times have passed, and the demons have turned from light to darkness, and the demons have never left their homes.
This is the story of the demon house.