A medical worker from Peking Union Medical College Hospital shares his experience of fighting against the COVID-19 in Hubei Province as a member of the medical assistance team, at the No.166 High School in Beijing, capital of China, May 11, 2020. More than 80,000 students in their final year of junior high school in Beijing returned to classrooms on Monday as the COVID-19 epidemic is under control. (Xinhua/Peng Ziyang)