No one knew what agreement they had reached with the Demon Clan, but for some reason, these members of the Human Clan chose to stay in the Underground World, living peacefully with the Demon Clan.
Subsequently, the shared development process of the Human and Demon Clans took place, along with the finalization of the rules of the Underground World. Upon seeing this, Liang Sheng couldn't help but narrow his eyes.
No wonder the structure of Beast Swamp's Underground World is so similar to the Human Clan's understanding of time - it turns out the Human Clan played a part in it.
Latterly, part of the mural was destroyed by an unknown cause. By the time a clear section of the mural was once again viewable, it was already the Great Calamity of Beast Swamp.
The Human Clan vanished under heavenly punishment, whereas the Demon Clan was spared. In this era of Modern Cultivation Method, they survive by hiding in the Underground World.
Until now!