As Han Li continued to descend deeper and deeper underground, the air temperature was also rapidly rising, while the passageway was becoming wider and wider. At this stage, its highest point was already over 100 feet tall.

Han Li continued to follow along behind the fire raven while inspecting the walls of the cave on either side of him.

The cave walls were quite even and smooth, and there were many signs of sections having previously been repaired.

Was the previous elder inhabiting this mountain carrying out these repairs? Han Li speculated.

Given how abundant the fire-attribute energy here was, it was most likely the case that the previous elder was using fire-attribute cultivation arts, and by that logic, it was very likely that he was the one who had set up the illusory restriction outside.

After flying for another 15 minutes, the dull rumbling was becoming louder and louder, as if countless thunderclaps were ringing out in succession.

For some reason, the Essence Fire Raven suddenly sped up by about twofold here, and Han Li naturally picked up the pace as well.

Shortly thereafter, a massive fiery red world appeared before his eyes. It was an enormous underground cavern that was tens of thousands...