738 Terrifying Mountain Giant!

738—Terrifying Mountain Giant!

With a great mountain hoisted onto his shoulders, weighing tens of millions of jun, every step Chen Yun took was extremely difficult. His heavy footsteps—thud, thud, thud...—echoed through the deep, dark cavern. Every part of Underworld Mountain was incredibly hard, no less so than the Dragon Scale Saber.

"Rumble..."

The rushing waters of the Styx River rumbled thunderously, and the riverbed grew steeper and more rugged. A mysterious force within the Styx River restrained the roaring black water as it plunged downward, preventing even a single drop from splashing onto the banks. Faint Black Light flickered, barely visible in the deep, dark cavern, making the scene seem utterly eerie.

"Whew—!"

The pressure inside Underworld Mountain was simply too terrifying. Chen Yun could not help stopping to gasp for breath, sweat pouring down like rain. At this point, he had no choice but to begin drawing on the immense energy within his body for support. Brilliant golden light radiated in all directions, yet an invisible force confined it to within a meter of Chen Yun's body. The visible range of his Yin Yang Heavenly Eye had also shrunk to just fifty meters.

"There's actually no energy in this cavern for anyone to absorb. It seems that any expert who enters this place will eventually fall into crisis because of the lack of energy!"

Very soon, Chen Yun realized a serious problem. Although the cavern was filled with extremely dense energy, it all lingered above the Styx River, apparently brought about by an invisible force. Even when Chen Yun circulated the Heavenly Dragon Body Refining Art with all his might, he could only absorb a small amount from above the Styx River. That was nowhere near enough to solve the problem. If too much time passed and Chen Yun