"Because it doesn't show any distinct attributes like magma, abyss, storm, etc., it disperses a chaotic, unordered special radiation from the bottom of Abyss. It doesn't affect life but promotes the evolution of the Secret Realm itself, birthing more resources, and even abnormal evolutions."
For example, magma could become blood magma, soul magma, etc., occasionally changing the terrain; cities that were just built might be scrapped, thus, it is not suitable for ordinary people to live."
Moreover, the demons in the Secret Realm, driven by their instincts of survival and evolution, also desperately fight for resources, beginning a natural selection where the strong prey on the weak and their nature becomes inherently brutal."
