Shijiazhuang city spans Taihang Mountain and North China Plain. The west is located in the middle of Taihang Mountain, and the east is Hutuo River alluvial plain. The terrain is high in the west and low in the east. The terrain in the second ring road of the urban area is high in the northwest and low in the southeast. The northwest corner is 8 1.5 meters above sea level, and the southeast corner is 64.3 meters above sea level. Just like the gossip theory, the Hutuo River in the middle of Shijiazhuang runs through Chang 'an District and is one of the main rivers for flood control and drainage in Shijiazhuang. According to the South-to-North Water Transfer Project, a large-scale water system has been established around Shijiazhuang. Beijing-Guangzhou Railway, Shijiazhuang-Taiyuan Railway and Shijiazhuang-Taiyuan Passenger Dedicated Line of Shide Railway have been opened to traffic, and Beijing-Guangzhou high-speed railway will be opened soon. The expressways include Beijing-Zhuhai, Beijing-Kunming and Shitai.