A staff member disinfects facilities at Shanghai Hongqiao Station in east China's Shanghai, Feb. 3, 2021. Railway stations in Shanghai strengthened disinfection process to ensure safe and pleasant journeys of passengers. (Xinhua/Chen Fei)

A robot conducts disinfection process at Shanghai Hongqiao Station in east China's Shanghai, Feb. 3, 2021. Railway stations in Shanghai strengthened disinfection process to ensure safe and pleasant journeys of passengers. (Xinhua/Chen Fei)

A staff member disinfects ticket machines at Shanghai Hongqiao Station in east China's Shanghai, Feb. 3, 2021. Railway stations in Shanghai strengthened disinfection process to ensure safe and pleasant journeys of passengers. (Xinhua/Chen Fei)

A staff member disinfects facilities at Shanghai Hongqiao Station in east China's Shanghai, Feb. 3, 2021. Railway stations in Shanghai strengthened disinfection process to ensure safe and pleasant journeys of passengers. (Xinhua/Chen Fei)

Robots conduct disinfection process at Shanghai Hongqiao Station in east China's Shanghai, Feb. 3, 2021. Railway stations in Shanghai strengthened disinfection process to ensure safe and pleasant journeys of passengers. (Xinhua/Chen Fei)