Dongzhou Park, located in the county-level city of Hai'an in Nantong, East China's Jiangsu province, boasts colorful trees and lucid waters in early winter. [Photo/CFP]

In recent years, Hai'an has been committed to adding more green space and improving its urban natural spaces. [Photo/CFP]

Dongzhou Park was renovated from a solid waste landfill at the northeastern corner of the city and built into a venue for sightseeing, fitness and recreation for local people. [Photo/CFP]

Ducks swim in Dongzhou Park in early winter. [Photo/CFP]