Chapter 551: Crossing the Yin River, Grandfather's Secret

The narrow, winding tunnel finally opened into a vast, cavernous space. The air grew damp and heavy, carrying a chill that seeped not into the skin, but directly into the soul. Before Noah Jiang and his companions lay a breathtaking, yet terrifying, vista. A colossal underground river flowed silently through the heart of the cavern. It was not the rushing, gurgling water of the surface world. This river was unnervingly still, its surface as smooth and black as polished obsidian. No light reflected...