With no light, everything ahead of Luo Zheng was pitch-black. He could only barely make out the path by relying on the faintest glimmer.
As for the small demonic beasts hidden in the darkness, Luo Zheng no longer had the leisure to consider them. The greatest trouble was right on his heels.
That Blade Worm Mother Empress pursued him relentlessly, its enormous body smashing through many Stone Pillars in the caves.
He did not know whether it was relying on its keen sense of smell or whether it had left some special mark on him. Luo Zheng had shaken it off several times by passing through the densely packed caves, yet not long afterward, it had caught up with him again.
During this chase, the sulfurous smell rushing into his nose grew increasingly thick.
Just as Luo Zheng burrowed into another series of connected caves, the space before him suddenly opened up, and at the same time, he was enveloped in a dark-red glow.
Before Luo Zheng's eyes was actually an underground lake. Yet what filled this underground lake was not water, but roiling lava. Within the lava, dark-red flames bloomed one after another, only to be extinguished again and again.
That was actually Earth Core Fire!
According to the ancient books, Earth Core Fire was said to be a type of flame that emerged from the heart of the earth.
Artifact refiners both loved and hated Earth Core Fire. Compared with the true essence flames cultivated within their bodies, Earth Core Fire was more violent, more fierce, and likewise more unstable. Yet when refining certain special magic treasures, Earth Core Fire had miraculous effects.
The sulfurous smell Luo Zheng had detected earlier should have been emanating from this pool of Earth Core Fire.
"Rumble, rumble..."
Another series of tremors