Aerial photo taken on June 27, 2019 shows staff members of Chongqing Environment &Sanitation Group putting the sorted perishable garbage on a transport vehicle at a community in Jiulongpo District in Chongqing, southwest China. Chongqing has been striving to promote garbage sorting in recent years. A garbage classification system has covered 680,000 households from 1,796 communities of 39 streets and towns in the downtown area of Chongqing. (Xinhua/Liu Chan)