chapter 123 Fire powers

Some powerful cultivators of the Immortal Path like to open up secret realms such as caves and heavens in famous mountains and rivers; while strong cultivators of the Demonic Path prefer to collect the evil and vicious energy from the underground, so they like to open up secret realms underground.

If it wasn't a secret realm, how could we see lava thousands of meters underground?

The earth's lava layer can penetrate tens of kilometers underground. With current drilling...