C449 Black Stone Door Internal Movement of the Yun Family

The moment they arrived at the center of the lake, Mo Junyan could immediately see what was in the empty space.

Shockingly, there was a stone door three meters tall and two meters wide! The stone door was black, and from time to time a few black gases were emitted.

Mo Junyan flew down slowly and soon arrived in front of the black stone door. He looked at Gongsun Yun