Video PlayerClose
Traffic police officers participate in a drill that deals with emergencies in the transportation of inflammable liquids in Lanzhou, northwest China's Gansu Province, June 20, 2018. (Xinhua/Li Xiao)
Traffic police officers participate in a drill that deals with emergencies in the transportation of inflammable liquids in Lanzhou, northwest China's Gansu Province, June 20, 2018. (Xinhua/Li Xiao)