As they ventured deeper into the shaft, the temperature kept rising. Before long, it had exceeded 100 degrees Celsius.
Moreover, the temperature was still climbing.
An ordinary person without a specialized Protective Suit would have been unable to continue exploring.
The two of them, however, used Mystic Womb Realm light to protect their bodies. Combined with the extraordinary physiques of Mystic Womb Realm cultivators, this allowed them to withstand the extreme heat.
Especially Luo Yan. His Nine Kowtows to the Heavenly Gate had already pushed open two Heavenly Gates, giving him a constitution far beyond ordinary people's. He was Immune to Water and Fire, able to enter the deep sea and withstand intense heat.
Thus, in the environment of the deep shaft, where the temperature continued to rise, Luo Yan breathed normally and did not even have a drop of sweat on his face.
The two of them continued descending. After drifting downward through the shaft for nearly two hours, they finally saw the exit.
The exit blazed with bright firelight. By then, the temperature had approached 200 degrees Celsius.
When they entered the firelight, they saw a vast underground world a moment later.
It was an enormous domed space. Pillars of stone of various sizes connected the dome to the earth below.
These stone pillars supported the dome and ensured the structural stability of the space.
The ground was crisscrossed with cracks, some of which seeped orange-red lava.
Farther away, there was an even larger sea of boiling magma. Thick lava slowly surged, and tongues of flame occasionally leaped into the air. Once they cooled, they formed rocks of all kinds.
"My heavens, have we reached the center of the earth?" Xiao Xiao looked around and could not help exclaiming softly.
Luo Yan looked toward the Sword of the