C427 Advancing to Wu Zong Advanced-stage

In the belly of this mountain, there was a pitch-black space that was endless, and there was a huge cocoon that was dozens of meters wide.

The cocoon was big and small at times, as if it was breathing. It was a marvelous sight.

The dense cocoons in the surroundings entangled with each other and scattered in all directions. They connected to the stone wall