A staff displays the QR code for real-name registration on a subway carriage at a train depot in Wuhan, central China's Hubei Province, March 23, 2020. [Photo/Xinhua]

Staff overhaul a subway train at a train depot in Wuhan, central China's Hubei Province, March 23, 2020. [Photo/Xinhua]

A staff tests the QR code for real-name registration at the bus terminal in Wuhan, central China's Hubei Province, March 23, 2020. [Photo/Xinhua]

A staff conducts disinfection at the subway station of Hankou Railway Station in Wuhan, central China's Hubei Province, March 23, 2020. [Photo/Xinhua]

A staff transfers the QR code for real-name registration to the entrance of the subway station of Hankou Railway Station in Wuhan, central China's Hubei Province, March 23, 2020. [Photo/Xinhua]

Zhao Zhenxiang of Wuhan public transportation group disinfects a bus at the bus terminal in Wuhan, central China's Hubei Province, March 23, 2020. [Photo/Xinhua]

Staff members conduct disinfection on the subway train at a train depot in Wuhan, central China's Hubei Province, March 23, 2020. [Photo/Xinhua]

A staff conducts disinfection at the subway station of Hankou Railway Station in Wuhan, central China's Hubei Province, March 23, 2020. [Photo/Xinhua]