Chen Qiuju and her 10-year-old student Yin Tao pose for a picture. The boy was left behind when his parents went to run a restaurant in Guangzhou, Guangdong Province. Chen says, "His grandfather spoils him and he doesn't like doing homework. But he is very active in answering questions in class and can often give answers when other students cannot." [Photo by Chen Weisong/China.org.cn]