In the psychiatric hospital on the top of Langshan Mountain, the wind blows gently, the leaves rustle, and the warm sunshine shines on the ground, giving people a happy and beautiful feeling.

However, the warm sunshine did not fall into a room in the building.

The glass in the room is the glass that keeps out the sunlight and all sounds outside the window.

There is only light in the room.

Xia Ranran, dressed in a white hospital uniform, picked up the calendar on the bedside table and sketched out the marks one by one with his nails.

Her nails have long been trimmed clean and the traces outlined are...