Staff members clean train carriages at a service garage in Hengyang, central China's Hunan Province, Jan. 16, 2022.Photo:Xinhua

Aerial photo taken on Jan. 16, 2022 shows staff members cleaning train carriages at a service garage in Hengyang, central China's Hunan Province.Photo:Xinhua

Crew members prepare epidemic prevention kits on train G1724 in east China's Shanghai, Jan. 16, 2022.Photo:Xinhua

Crew members place disinfection notices on train G1724 in east China's Shanghai, Jan. 16, 2022.Photo:Xinhua

Staff members make hand heart gestures at Xi'an North Railway Station in Xi'an, northwest China's Shaanxi Province, Jan. 16, 2022.Photo:Xinhua

A staff member works at Xi'an North Railway Station in Xi'an, northwest China's Shaanxi Province, Jan. 16, 2022.Photo:Xinhua

Staff members spray disinfectants on the platform of Xi'an North Railway Station in Xi'an, northwest China's Shaanxi Province, Jan. 16, 2022.Photo:Xinhua