Workers are seen at a cement plant of the Shengwei Group in Tongchuan City, northwest China's Shaanxi Province, June 5, 2018. Tongchuan, once a manufacturing base for coal mining industry and cement production, used to suffer from environment pollutions. The local government has focused on sustainable development in the recent years and helped industries transform to grasp more opportunities. China has pledged to coordinate its efforts of environmental protection and economic development in 2019, an important year for winning the tough battle against pollution. At the annual Central Economic Work Conference earlier this month, authorities called for building on this year's achievement in pollution control, making more efforts and input in 2019. Since the turn of this year, China has made solid efforts to combat pollution and seen constant improvement of the environment. The Central Economic Work Conference made it clear that local governments must avoid past simple and unscrupulous practices in dealing with environmental problems. (Xinhua/Li Yibo)