the mountains of Qixian County, Henan, there is an oil city village primary school, only a 5 day teacher and 10 year old student Xu Jiaqi. He was the only one who stayed at home with Grandpa two, and was the only child in the village who did not go out to study.
Xu: as the village is relatively poor, a big wave of people live in the town, so the source is decreasing year by year. Little, by now, there's only one student.