"What's that?" Chen Changqing asked in confusion as he saw the scene.

The diameter of the platform in front of them was about one kilometer, but the ground they could step on was only ten meters in width. In the center was a deep pit, and Chen Changqing couldn't see its bottom at all. There was profound Qi in the cave, as if there were nebulae constantly rotating below.

Chen Changqing sensed unknown energy in it, which was as old as the planet.

He had ...