Students line up to get their temperature checked before entering the Hubei Shuiguohu No. 1 Middle School in Wuhan, central China's Hubei Province, Aug. 10, 2020. Junior high schools in Wuhan reopened and resumed classes for students in their first and second grades on Monday. (Photo by Zhao Jun/Xinhua)

Students have a class in Hubei Shuiguohu No. 1 Middle School in Wuhan, central China's Hubei Province, Aug. 10, 2020. Junior high schools in Wuhan reopened and resumed classes for students in their first and second grades on Monday. (Photo by Zhao Jun/Xinhua)

Students have a class in Hubei Shuiguohu No. 1 Middle School in Wuhan, central China's Hubei Province, Aug. 10, 2020. Junior high schools in Wuhan reopened and resumed classes for students in their first and second grades on Monday. (Photo by Zhao Jun/Xinhua)

Students wash their hands before entering the classroom in Hubei Shuiguohu No. 1 Middle School in Wuhan, central China's Hubei Province, Aug. 10, 2020. Junior high schools in Wuhan reopened and resumed classes for students in their first and second grades on Monday. (Photo by Zhao Jun/Xinhua)

Students have their temperature checked before entering the Hubei Shuiguohu No. 1 Middle School in Wuhan, central China's Hubei Province, Aug. 10, 2020. Junior high schools in Wuhan reopened and resumed classes for students in their first and second grades on Monday. (Photo by Zhao Jun/Xinhua)