Residents take part in a community waste sorting quiz in Changzhi city, Shanxi province. Changzhi has recently been promoting waste sorting and recycling across the city to improve local living environment. Changzhi expects to form a complete infrastructure system for garbage sorting, transportation, disposal and recycling by 2020 with the harmless treatment rate of domestic garbage reaching 100 percent and resource recycling rate exceeding 35 percent. [Photo/Shanxi Daily]

Children learn how to sort trash in a kindergarten in Changzhi city. [Photo/Shanxi Daily]