Aerial photo taken on March 26, 2020 shows vehicles queue to pass an expressway toll-gate to enter Wuhan, central China's Hubei Province. Traffic flow at highway exits increased due to a growing number of people returned as Wuhan speeds up resumption of work and production. There were health staff, community workers and police in each lane at toll-gate checkpoints, scanning health codes and taking body temperatures of the returning workers, disinfecting their vehicles and making registrations. (Xinhua/Xiao Yijiu)

People pass an expressway toll-gate after getting their information checked in Wuhan, central China's Hubei Province, March 26, 2020. Traffic flow at highway exits increased due to a growing number of people returned as Wuhan speeds up resumption of work and production. There were health staff, community workers and police in each lane at toll-gate checkpoints, scanning health codes and taking body temperatures of the returning workers, disinfecting their vehicles and making registrations. (Xinhua/Xiao Yijiu)

Aerial photo taken on March 26, 2020 shows vehicles queue to pass an expressway toll-gate to enter Wuhan, central China's Hubei Province. Traffic flow at highway exits increased due to a growing number of people returned as Wuhan speeds up resumption of work and production. There were health staff, community workers and police in each lane at toll-gate checkpoints, scanning health codes and taking body temperatures of the returning workers, disinfecting their vehicles and making registrations. (Xinhua/Xiao Yijiu)

Aerial photo taken on March 26, 2020 shows vehicles queue to pass an expressway toll-gate to enter Wuhan, central China's Hubei Province. Traffic flow at highway exits increased due to a growing number of people returned as Wuhan speeds up resumption of work and production. There were health staff, community workers and police in each lane at toll-gate checkpoints, scanning health codes and taking body temperatures of the returning workers, disinfecting their vehicles and making registrations. (Xinhua/Xiao Yijiu)

Aerial photo taken on March 26, 2020 shows staff on duty checking health QR code of drivers and passengers at an expressway toll-gate in Wuhan, central China's Hubei Province. Traffic flow at highway exits increased due to a growing number of people returned as Wuhan speeds up resumption of work and production. There were health staff, community workers and police in each lane at toll-gate checkpoints, scanning health codes and taking body temperatures of the returning workers, disinfecting their vehicles and making registrations. (Xinhua/Xiao Yijiu)

Aerial photo taken on March 26, 2020 shows vehicles queue to pass an expressway toll-gate to enter Wuhan, central China's Hubei Province. Traffic flow at highway exits increased due to a growing number of people returned as Wuhan speeds up resumption of work and production. There were health staff, community workers and police in each lane at toll-gate checkpoints, scanning health codes and taking body temperatures of the returning workers, disinfecting their vehicles and making registrations. (Xinhua/Xiao Yijiu)

A staff member on duty checks the body temperature of a passenger at an expressway toll-gate in Wuhan, central China's Hubei Province, March 26, 2020. Traffic flow at highway exits increased due to a growing number of people returned as Wuhan speeds up resumption of work and production. There were health staff, community workers and police in each lane at toll-gate checkpoints, scanning health codes and taking body temperatures of the returning workers, disinfecting their vehicles and making registrations. (Xinhua/Xiao Yijiu)