The Dark Yin Energy on the plain was formed from the Sub-Immortal Evil Spirit Lord's essence energy.
It had entered the cultivation world from the outside 10,000 years ago. It had the cultivation of a Sub-Immortal and used it to kill many innocent people in the five regions. Even those Tribulation Transcendence cultivators were not its match.
In the end, the old Sacred Leader from the Reincarnation Sacred Ground had sacrificed his life and used the pseudo Immortal artifact, Disk of Six Paths of Reincarnation, to seal the spirit.
The disk had been refining the Evil Spirit Lord's origin and producing the Dark Yin Energy from it for all these years.
By right, this energy should have dispersed on its own. However, one of the Evil Spirit sect members had found this place 3,000 years ago.
He had gathered other believers and set up an array formation to gather all the Dark Yin Energy.
