The source is Tang Du Fu's Ascending the Mountain.
In autumn, the sky is crisp and the autumn wind is rustling. From time to time, the long cry of an ape came from the canyon. The river is small, the water is clear, the sand is white, and birds are flying around it.
comment
The combination of images is quite dense and natural. Not only the upper and lower sentences are correct, but also the sentences are self-correct. In addition, the last word of the first sentence is flat. Therefore, Shen Deqian's "Tang Poetry" commented: "The first two sentences still rhyme and have a strange style."
Ming Hu Yingping's Poems (Volume 5): "DUZH's" wide sky and high winds, apes singing and birds singing, blue lakes and white sands returning "is wonderful. This poem should be the first of the seven laws in ancient and modern times, not necessarily the first of the seven laws in the Tang Dynasty. " Shen Deqian's Collection of Tang Poems in Qing Dynasty, Volume XIII: "Eight sentences are all right, and there are two at first, but in comparison, rhyme is still used repeatedly, and the style is strangely changed.