Twenty-three-year-old Yang Zhen, after graduating from the Provincial Normal College, took the initiative to sign up to volunteer in rural areas.
The bus bumped along the winding mountain road all day and night, and he came to the remote Qingshigou Primary School for the first time.
It was also there that he met Lin Jing for the first time.
The girl, wearing a washed blue sweater, stood in the wind and snow, distributing hot water to the children.
That year, Yang Zhen thought he would change this place.
Later he realized that the one who was really changed was himself.
