What scenery do the three lines depict?

Walking on the Mountain is a poem written by the poet Du Mu, which describes and praises the mountain scenery in late autumn. This poem depicts the colors of autumn, showing a moving autumn color picture of mountains, mountains, people, white clouds and red leaves, which constitutes a harmonious and unified picture. In this poem, Du Mu controls the scenery with emotion, quickly and accurately captures the image that can reflect the natural beauty, and integrates his own emotions into it, so that the emotional beauty and the natural beauty are integrated and the scene blends.