Cigarette butts collected by sanitary workers in downtown Lanzhou City, Gansu Province are being displayed in an activity to raise public awareness of environmental protection, May 24, 2018. (Photo: China News Service/Yang Yanmin)
Cigarette butts collected by sanitary workers in downtown Lanzhou City, Gansu Province are being displayed in an activity to raise public awareness of environmental protection, May 24, 2018. (Photo: China News Service/Yang Yanmin)
Cigarette butts collected by sanitary workers in downtown Lanzhou City, Gansu Province are being displayed in an activity to raise public awareness of environmental protection, May 24, 2018. (Photo: China News Service/Yang Yanmin)
Cigarette butts collected by sanitary workers in downtown Lanzhou City, Gansu Province are being displayed in an activity to raise public awareness of environmental protection, May 24, 2018. (Photo: China News Service/Yang Yanmin)
