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Marks caused by mask are seen on the face of a medical worker at Fuzhou Pulmonary Hospital of Fujian in Fuzhou, southeast China's Fujian Province, Jan. 31, 2020. (Photo by Wang Yi/Xinhua)
Marks caused by mask are seen on the face of a medical worker at Fuzhou Pulmonary Hospital of Fujian in Fuzhou, southeast China's Fujian Province, Jan. 31, 2020. (Photo by Wang Yi/Xinhua)