Zhang Li teaches sign language to students at Qi Yin School in Nanchang, capital of east China's Jiangxi Province, Sept. 18, 2019. Zhang Li, who has worked on special education for 33 years, was recognized as a national teaching model in 2019 on this year's Teacher's Day. Zhang, moved by a dancing of a girl with deafness on TV, decided to work at the Qi Yin School in Nanchang to teach students with hearing problems after she graduated, and finally became the principal of the school. (Xinhua/Peng Zhaozhi)