At the Corpse-Hiding Hotel, if one had heard the footsteps from the Mirror Hotel, they wouldn't have been so steady and regular.
As for Peng Fengnian's firm assertion that no players had come in before them, this still needed to be verified—it wasn't that Xu Huo didn't trust these people, but this was inherently a very difficult thing to verify.
However, the footsteps heard in the Mirror Hotel could intersect with the trajectories of the players outside... This meant that the "footsteps" heard before entering and after entering were not the same, which also matched the fact that the "footsteps" could lead people into the Mirror World when heard in the Corpse-Hiding Hotel, yet hearing "footsteps" in the Mirror Hotel didn't provide a way out.
Assuming this fact was true, the players were completely trapped—the Mirror Hotel really was a place you could enter, but not leave.
