Taihang First Sentinel, Taihang Mountains, Beijing's first mountain, Taihang Mountains from this to the southeast. It is a very good forest park in Beijing. The forest reaches 95 [%]. Pines are the majority and the winter is green. Tickets are 6 yuan. There is a parking lot outside the East Gate, which can park nearly 100 cars. You can see the city of Beijing from the top. Strong recommendation.