Jiuquan's mirage is really by luck, not often can be seen, the mirage is formed by the natural phenomenon of light refraction and full reflection, it is formed by virtual images, but also very magical, to a certain geographical location, the physical conditions of the earth, time, A natural phenomenon that arises from many conditions such as climate. On a sunny and hot summer day in Jiuquan, there is a chance to see this mysterious mirage in Dunhuang's Gobi.