Photo shows a passenger scanning the QR code for real-name registration at a bus terminal in Wuhan, central China's Hubei Province, March 25, 2020. (Photo/Xinhua)

Photo shows a passenger scanning the QR code for real-name registration at a bus terminal in Wuhan, central China's Hubei Province, March 25, 2020. (Photo/Xinhua)

A passenger has his temperature taken at bus No. 518 in Wuhan, Hubei Province, on March 25, 2020. A safety supervisor was on each bus, whose duty was to make sure all passengers are healthy as their health code shows before boarding. (Photo/Xinhua

A passenger uses mobile payment to take the bus in Wuhan, central China's Hubei Province, March 25, 2020. (Photo/Xinhua)

A safety supervisor is seen on a bus departed from its terminus at Wuchang Railway Station at 5:25 a.m. March 25, 2020. Wuhan starts to resume bus service after nine weeks of lockdown. (Photo/Xinhua)