A staff member arranges commodities exchangeable in a supermarket for points earned through garbage classification in Lipu Township of Zhuji City, east China's Zhejiang Province, Aug. 9, 2018. Local government has rolled out a mechanism to encourage people to do garbage sorting, in which residents can redeem commodities with points earned from garbage classification or by answering questions about garbage classification. (Xinhua/Han Chuanhao)

A villager redeems commodities in a supermarket using points earned through garbage classification in Lipu Township of Zhuji City, east China's Zhejiang Province, Aug. 9, 2018. Local government has rolled out a mechanism to encourage people to do garbage sorting, in which residents can redeem commodities with points earned from garbage classification or by answering questions about garbage classification. (Xinhua/Han Chuanhao)