A city submerged by wind and sand is called an oasis deep in the desert Gobi. Where is it located?

Dunhuang, called sandbar in ancient times.

It's really like a boat stranded in the vast sand sea, waiting to be discovered and set out on an extraordinary voyage. BC 12 1, this long wait has finally been answered. In the spring of this year, the defeated Xiongnu in Hexi Corridor was busy withdrawing westward, and Huo Qubing, in high spirits, chased all the way to Dunhuang to rein in the reins. This is the symbol of the Han Dynasty's comprehensive counterattack against the Huns, and it is also the starting point of the legendary voyage of this sandy oasis. It has been given a meaningful name, namely Dunhuang.

Zhang Qian's second mission to the western regions.

After Emperor Wu of the Han Dynasty expelled the Huns, he began to quickly rebuild the ruling order of Hexi Corridor, build the Great Wall, set up a pass, deploy troops and dispatch troops, and settle down for immigrants ... After the war, the people's hearts were stable, and Zhang Qian and his mission set out from Chang 'an again. This time, he brought the majesty of the Han Dynasty and conveyed his willingness to trade peacefully with generous gifts. A trade corridor connecting the western regions and the Central Plains through the Hexi Corridor has begun to take shape, and Dunhuang, which is both a fork and a meeting point, has since become active.

Apart from silk, China's tea and porcelain have also become sought after "hard currency" in the world.

Profit-seeking businessmen have come to China. They crossed snow-capped mountains, deserts, grasslands and the sea, and all difficulties and obstacles could not stop them. As a result, generations of business travelers have stepped on roads connecting China with the world, which are collectively called the Silk Road. China's silk-making technology was not introduced to western countries until the middle of the 6th century. Before that, the western world's desire and demand for silk could only be met in China.