Past midnight.
The paranormal activity on the fourth floor of the Ghost Post Office seemed even more active than before. The ghosts that had ordinarily been suppressed by the post office's rules now felt as though they were completely out of control.
Dull thuds of heads smashing against doors echoed through the building.
There were hurried footsteps pacing back and forth outside the door. Every so often, they could even hear the sounds of someone passing through the corridor.
Most chilling of all, they could faintly hear singing drifting from somewhere within the post office. It was peculiar, like an opera performer singing onstage, its voice laden with a strong theatrical cadence. Yet it came and went intermittently, surfacing one moment and vanishing the next. They could not make it out clearly, and judging by the sound, it seemed very far away.
It had long since exceeded the range of the fourth floor, as though it had drifted over from beyond it—or perhaps from outside the Ghost Post Office building itself.
The appearance of these paranormal phenomena made people want to cover their ears and hear nothing at all.
At that moment.
There were already two corpses in the bedroom of Room 404.
One lay on the bed, badly decomposed. The other was Wang Shan's. He had not been dead for long, but his body was already turning cold and stiff.
Inside the Ghost Post Office, corpses deteriorated faster than they did outside.
Bang!
The room's peace was shattered at around 12:20.
The pacing footsteps outside abruptly stopped. Then something kicked the wooden door with tremendous force.
The kick came without warning. Li Yang, who was Blocking Door, had let his guard down slightly and failed to react in time. He was sent flying with a tumble and crashed onto