As a place where water resources for Beijing is located, ecological and sustainable development have been emphasized by local government. Due to its less impact on environment than heavy industry, tourism figures significantly in local policies of development. Possessing diverse landforms, such as plains, hills, mountains, basins and grasslands, Zhangjiakou is an ideal place for holidays, entertainment sightseeing for neighbour middle class and can provide tourists with a variety of experiences. In the area, there are significant differences in different seasons. In winter, tourists can ski in Chongli Mountains; in spring, they can visit historical sites; in summer, visitors can sleep in Mongolian yurts on Zhangbei Grassland, where annual musical events were held and taste fresh mutton; while in autumn, visitors can taste Huailai wine and take a bath in nearby hot springs.