'Left-behind kids' and stay-at-home teachers

As we ate noodles at a snack bar in Xiamei village one late-July morning, we could hear the voices of children reading aloud coming from a nearby room.

With the owner's permission, we walked along a narrow corridor and came upon a 15-square-meter classroom.

Eight students were in attendance and a middle-aged woman was writing mathematical equations on a small board that hung on the wall.