People sow grass seeds in the field restored from a disused mine in Maquanzi Town of Qinglong Manchu Autonomous County, north China's Hebei Province, Sept. 5, 2020. In recent years, Qinglong Manchu Autonomous County has focused on restoring open pits and reclaimed 8,762 mu (about 584 hectares) of land. (Xinhua/Yang Shiyao)
