Located in No. 19 of Hubeikou, Heishan District, Haidian District, the local people also call Wangshan Mountain. Jingmi Diversion Channel passes around the mountain. The air is fresh, there is no man-made pollution and the forest is lush. It is known as the oxygen source of Beijing City. The environmental protection education base for primary and secondary school students, the 3A scenic spot, the forest oxygen bar, convenient transportation and fast mountain are not high, and the road is easy to walk.