Garbage sorting volunteers introduce to residents a smart garbage recycling system at a community in Shuimogou District of Urumqi, northwest China's Xinjiang Uygur Autonomous Region, July 7, 2019. A pilot garbage sorting programme was launched Sunday in Urumqi's Shuimogou District, where garbage sorting bins, waste bags, recycling manuals and detailed oral instructions were offered to community residents free of cost. (Xinhua/Ding Lei)