Wednesday.
People cannot tell the time from such an environment, but they can hear the collision sound caused by the contact of the shoe sole with the metal ground, especially in such a closed and metallic corridor, any light sound can be constantly echoed and amplified here. The sound of mixed footsteps burst into the enclosed metal compartments on both sides of the corridor, then the rustling noises sounded.
The dull banging sound came into the corridor from behind the door of the metal compartment. It was the muffled noise made by the people in the enclosed compartment when they heard the movement and immediately got up and pressed the cold metal door. Bloodshot eyes were pressed against the small window above the metal door, which was only the size of a hand, looking at the people walking in the corridor.