Within the enormous underground cavern stretching for dozens of miles, vast waves of energy surged ceaselessly like a tide. The restrictions on the cavern walls flickered and swayed, while a series of utterly terrifying buzzing sounds rang out without end.
The entire massive cavern seemed to warp under the impact of an incomparably powerful external force.
At this moment, the underground cavern where Qin Fengming was located could be considered the one closest to the surface. All the other caverns lay beneath it.
Based on Qin Fengming's experience along the way, the cavern they had entered at the beginning should have been the deepest underground, lying several thousand or even ten thousand zhang from the surface.
After the three of them had left that cavern, they had traveled upward through several others. They were now no more than two or three thousand zhang from the surface. Even so, if the cavern collapsed now and buried them here, escaping would absolutely not be easy.
What terrified the three of them most was that the culprit behind the shaking of this enormous cavern might be the gigantic primordial beast they had encountered on their way here.
The moment they thought of that primordial beast, which was one or two thousand li long, terror surged through their hearts.
At this point, the three of them had no hesitation left. Their figures moved swiftly as they raced toward the passage leading out of this place.
When they were about to enter the passage, the three of them simultaneously paused. They cautiously stepped into the passage, and only then did they once again unleash their movement techniques, speeding toward the entrance...
"Rumble!~~~" A tremendous, deafening roar suddenly rang out before the three of them had even left the passage.
With this thunderous roar, the restrictions