Conditions for opening: Zhang Qian sent a mission to the Western Regions and opened the Silk Road, a communication line to promote economic and cultural exchanges between the East and the West. It passes through Hexi Corridor from Chang 'an, and then divides into north and south roads. South Road starts from Yangguan (now southwest of Dunhuang, Gansu) to the west, passes through Shanshan (now near Robnor), along the northern foot of Kunlun Mountain, and passes through Khotan (now Hotan), Dongsha and Dongsha. The North Road runs westward from Yumenguan (now northwest of Dunhuang), passes through Che's Guo Qian (now near Turpan), travels westward along the southern foot of Tianshan Mountain, passes through Yanqi and Shule, crosses Qingji and reaches Dawan. Then go north and south to Kangju and Chae Yeon; Go southwest to Da Yue, rest in peace. Silk is the most transported commodity on this trans-Eurasian road, so it is called "Silk Road" or "Silk Road".

Significance: The opening of the Silk Road effectively promoted the economic and cultural exchanges between China and the West and played a positive role in promoting the prosperity of the Han Dynasty. This Silk Road is still an important channel for communication between China and the West, and it still plays an important role in China's foreign economic and cultural exchanges today. We should make good use of it.