The couplet "The solitary smoke is straight in the desert, and the sun is setting in the long river" describes the strange and magnificent scenery outside the border fortress seen after entering the border fortress. " famous sentence. The border desert is vast and boundless, so the word "big" in "desert" is used. The frontier fortress is desolate and there are no wonders. The thick smoke from the beacon tower is particularly eye-catching, so it is called "lone smoke". The character "solitary" expresses the monotony of the scenery, while the character "straight" immediately following it expresses the beauty of its strength and perseverance. There are no mountains and trees in the desert, and the Yellow River that runs through it cannot express the poet's feelings without using the word "long". The sunset can easily give people a sentimental impression, but the word "round" is used here, but it gives people a warm, warm and boundless feeling. The word "round" and the word "straight" not only accurately depict the scene of the desert, but also express the author's deep feelings. The poet skillfully dissolves his loneliness into the description of the vast natural scene. Chapter 48 of "A Dream of Red Mansions" says: "'The solitary smoke in the desert is straight, and the sun sets round in the long river.' How can the smoke be straight? The sun is naturally round. The word 'straight' seems unreasonable, and the word 'round' seems too vulgar." When I closed the book and thought about it, I seemed to have seen this scene. If I were to search for two more words to replace these two, I couldn't find two more words. This is the advantage of poetry, which cannot be expressed in words. The meaning is realistic, but it seems irrational, but it is reasonable and sentimental.

"This passage can be regarded as expressing the superb artistic realm of these two poems