From Beijing city all the way to the north, the car travels to the foot of the green mountain when it has come to the Thirteen Tombs scenic area located in Changping District. This is one of the most important destinations for many foreign tourists visiting Beijing for the first time. And for those who love photography in Beijing, it is the starting point of a heavyweight road, the Changchi Road. The Changchi Road is a municipal road from Changling Town in Beijing's Changping District to Chicheng County in Hebei Province, with a total length of 58.8 km under Yanqing's jurisdiction. Because of the special topography, the section of the Changchi Road from Thirteen Tombs to Yanqing County is mostly a winding mountain road with excellent scenery along the way. The road passes through villages such as Glacier Green Valley, Xiangtun, Dazhuangke and Xiaozhuangke. In Glacier Green Valley there is a viewing platform with excellent views, so be sure to climb up there and have a look.