C240 Empty Coffin(1)

The more they walked along the corridor, the narrower it got, so the two of them had to walk side by side until they finally reached the front and back of the building. This place was completely airtight, and not long after, Huang Boxi started shouting, "Zhongyuan, let's go out. Why do I feel like this place is a dead end? If we go any further, there might not even be air left