A staff member cleans a room at a hill station in Moganshan Township in Deqing County, east China's Zhejiang Province, May 30, 2018. More than 600 hill stations in Moganshan attracted 1.887 million visits of tourists in 2017 and made a total revenue of 1.89 billion yuan (0.295 billion U.S. dollars). The hill station industry significantly promotes local economy. (Xinhua/Weng Xinyang)