The river is the national life, and the energy of the 390-kilometer party river gives Dunhuang.

To the west of the Yellow River and north of the Qilian Mountains, there are few rivers that eventually flow into the sea. Their destination is either absorbed by a sponge-like desert or become the growth energy of crops and humans and animals. Wherever the river goes, it is full of vitality. From generation to dissipation, it does not increase or decrease, restricts development, and dominates the balance of income and resources of one side.