The passageway leading to the deepest part of the ruins was deep and deathly silent.

The walls were a dark red, appearing to have been scorched by high temperatures for years. The air was thick with a strong sulfuric smell.

The deeper he went, the higher the temperature rose.

Beads of sweat had already formed on Lin Mo's forehead. If not for the "Inextinguishable True Fire" he possessed, granting him a natural high resistance to flames, the temperature alone would have made it impossible for an ordinary Foundation Establishment cultivator to take a single step.