Yunshan County, three o'clock in the morning.
In a residential area located in the suburbs.
Yingdong Residential Area, Building 11, Unit 3, Second floor, Room 202.
A ten-year-old boy nestled alone in his bed, breathing steadily, half of his face concealed under a black and white striped thin quilt.
He was sleeping soundly.
Through a gap in the curtains, a beam of light from a distant building shone in.
The light fell on the quilt covering him.
It made the scene appear even more tranquil and peaceful.
Thump, thump, thump.
Suddenly.
In the silent bedroom, with no traffic or barking dogs and cats.
The door, was gently knocked.
The boy didn't wake up; he simply frowned slightly, turned over, and continued to sleep.
Thump, thump, thump.
The knocking sound rose again.
In such a quiet night, the sound seemed extremely clear.
This time, the boy slowly opened his eyes. He turned his head in a daze and looked around.
Thump, thump, thump.
