Encountering the end of days in the long End of Dharma period, after a prolonged slumber and incubation, carried the remnants of incense and hatched at the worst of the End of Dharma period, it was born insane.
Then, by a fortuitous coincidence, before its lifespan ran out, the revival of spiritual energy was triggered. After enduring hundreds of years of pollution and invasion, it went from madness to being an evil seed, with the potential to become a startling demon.
Since it's a special spatial demonic being, once it breaks through the limit of this world's power, with the state of this world's Heavenly Dao, it can't be expelled.
Hence, this place was treated as a forbidden area, leaning towards time evolution, throwing countless demons in to diverge the spirit mechanism and delay its growth. This was the last resort done by the Heavenly Dao of this world to postpone it.
