It was pitch-dark inside, and the air seemed to be much dirtier than outside. Even with Huo Yuhao’s vision, he couldn’t see what was going on inside clearly.

He wasn’t surprised by this. Instead, he broke out into a slight smile that carried a trace of cold intent.

At this point, he heard a tragic scream resonating from inside. It sounded very pathetic, but it wasn’t loud. If not for the fact that he was at the door, he wouldn’t have heard the scream.

At this point, he sensed that the strong spiritual undulations coming from inside had retracted.

He couldn’t give up on such an opportunity. He unleashed his Spiritual Detection and started to survey the inside of the building.

There was a spacious hall behind the door, which was pitch-black right now. The polluted air came from some unknown origin. For safety purposes, Huo Yuhao controlled his Spiritual Detection to follow the sides of the rooms and surveyed one round before he entered another hall...