The BB is located in Wudaohe, Shipian Village, Shentangyu, and is surrounded by the Shentangyu Plank Road, which is located in Huairou District, Beijing. It was built to welcome the APEC meeting to be held in Huairou and to enhance the scenic environment around Yanqi Lake. The entrance is next to the Evernight Valley Archway, with a total length of more than 7,000 meters, and ultimately reaches the Shentangyu Scenic Area. The trail is built along the Yanqi River. Along the way, the mountains and rivers are interdependent, and the scenery is beautiful, giving people a very comfortable travel experience. This route is basically a flat wooden trail with a few gentle slopes. It is not very intense and can be played all year round. It is suitable for leisure walks and parent-child activities. The entire Shentangyu Plank Road is free, and Shijiu is located two-thirds of the way from the starting point. The Shentangyu Plank Road is not the Shentangyu Scenic Area. It takes about 20 minutes to walk from Shijiu to the entrance of the Shentangyu Scenic Area.