Speaking of the cool valley, many Beijing-Tianjin-Hebei friends are no strangers. The Qingliang Valley Scenic Area is located in the northern mountainous area of Beijing. The core of the valley is a quiet fairyland, and surrounded by winding mountains. Usually, a bridge is set up between the mountains and the mountains to facilitate visitors. The Qingli Valley has a large network of red and human landscapes, which is the Glass Flyover that opened in the spring of 2018. The bridge is a cable-stayed alpine gorge glass bridge, constructed of tempered glass and steel. It has a unique cantilever design and is suspended above the Qingliang Valley. It is more than 200 meters long and has been certified by the National Security Appraisal Center to meet national safety standards.