Ding Zhangliang, a perishable garbage sorter and deliverer, introduces a garbage can inserted with smart chips and a weighing machine uploading information on garbage sorting in Qianyuan Township of Deqing County, east China's Zhejiang Province, July 4, 2019. An all-rounded system dealing with garbage has been established in Deqing to sort, transport and dispose garbage. Collection rate of perishable garbage has been on steady growth. (Xinhua/Lin Shanchuan)