When I saw these people running back, I felt relieved and tried to persuade them outside. They didn't listen, but I didn't realize that one of them was frightened to go back here. But that's good. At least I don't have to protect them next. That's what I thought, but soon I realized that things weren't as simple as that. These ordinary people can't run out at all. They seem to be running back now. In fact, they have been turning around in situ all the time. They haven't run out of this place at all. They must have encountered ghosts hitting the wall now. The ghosts here won't let...