我国古代通往西方(中亚、欧洲、印度北部等地)的陆路交通最东的一段,在秦汉时已基本形成。学术界以往的观点认为主要有两条路线:一是从关中过陇山,经河西走廊入西域.即所谓的“河西路”;一是从关中或今河南北上经漠南阴山至河西走廊北面的居延海(今内蒙古自治区额济纳旗),向西至西域.即所谓的“居延路”或“草原路”。其中河西路,自汉武帝遣张骞出使西域,于河西设四郡(武威、酒泉、张掖、敦煌)后,开始兴盛,成为中西陆路交 The most eastern section of land transportation to the West (Central Asia, Europe, northern India and other places) in ancient China has basically taken shape during the Qin and Han dynasties. Academics in the past that there are two main points of view: First, Longmen pass Guanzhong, the Hexi Corridor into the Western Regions. The so-called “Hexi Road ”; one from the Guanzhong or today Henan northward through the desert South Yinshan to Hexi In the north of the corridor, Juyanhai (now Ejin Banner of Inner Mongolia Autonomous Region) is westward to the Western Regions, which is called “Juyan Road” or “Prairie Road”. Among them, Hexi Road started its prosperity by sending Zhang Qian to the Western Regions when Han Wudi was sent and four counties (Wuwei, Jiuquan, Zhangye and Dunhuang) were set up in the Hexi Corridor and became the center of land-to-land transportation