Introduction to snow-capped mountains: In autumn, the vast mountain tops of Heyeping are already covered with snow. Heavy snowfalls pile up one after another to form a spectacular snow scene, which remains the case until early spring. Du Shenyan, a poet in the early Tang Dynasty, has the sentence "The flowers have not bloomed, the old and new snow is still lingering" in his poem "A Trip to Lanzhou", which describes the early spring scenery in this area.