A teacher teaches online class in No. 4 High School of Xiangyang in Xiangyang, central China's Hubei Province, April 10, 2020. As the epidemic prevention and control situation continues to improve, schools in Xiangyang have carried out a series of measures to prepare for reopening. The No. 4 High School of Xiangyang has begun to organize some teachers to enter the classroom to give students online lessons on the premise of doing a good job in campus epidemic containment. (Photo by Xie Jianfei/Xinhua)