In recent years, the desert has gradually become a holy place for tourists to check in. Fall is the most suitable season for desert travel. At this time, the weather is windy and sunny, and you can enjoy the desert and sand sea oasis. In China, you can't go around the Silk Road when you go to the desert. Every September, Lanzhou holds the "China Silk Road Festival", at which time the northwest has entered the autumn, the temperature is between 15-30℃, whether it is self-driving or hiking is appropriate. From Lanzhou, the first desert encountered along the Silk Road is Tengger. This is the fourth largest desert in my country, which means in Mongolian "the vast sand sea is as infinity as the sky". There are 422 lake basins in the desert, and the Moon Lake in the hinterland of the desert is the only original ecological lake with a coastline among the many lakes in Tengger. Overlooking the Moon Lake, it seems to see the shape of a map of China. The lake contains a variety of trace elements, and its black sand beach has become a natural beach bath, making it a treasure of the local population's "natural mud treatment."