Workers operates crane to load a container at the Jingtang port area of Tangshan Port, north China's Hebei Province, Feb. 21, 2020. Tangshan Port implemented strict measures including measuring body temperature for staff members and disinfecting vehicles to ensure safe delivery amid the novel coronavirus outbreak. (Photos: Xinhua)

Aerial photo taken on Feb. 20, 2020 shows containers loading to a ship at the Jingtang port area of Tangshan Port, north China's Hebei Province, Feb. 20, 2020. Tangshan Port implemented strict measures including measuring body temperature for staff members and disinfecting vehicles to ensure safe delivery amid the novel coronavirus outbreak.

A worker disinfects a vehicle at the Jingtang port area of Tangshan Port, north China's Hebei Province, Feb. 21, 2020. Tangshan Port implemented strict measures including measuring body temperature for staff members and disinfecting vehicles to ensure safe delivery amid the novel coronavirus outbreak.