1. It reflects a kind of sad beauty. The content of the song reflects dissatisfaction with the reality of Chinese society under the rule of warlords at that time, as well as worries about the future and destiny of the country. "Question" is a recognized and excellent masterpiece. 2. It reflects the beauty of friendship, farewell and desolation. It is said that one time, Wang Wei saw off his friend Yuan Er to serve outside the Pass, and finally sent him to Weicheng. (Weicheng is the only way from the capital to the Pass. If you go west out of Yangguan, there will be sparsely populated areas. At that time, he sent his friend off to Weicheng. Traveling westward often ends up here.) Reluctantly saying, "I see you off thousands of miles away, I will eventually say goodbye." Wang Wei composed a song with tears in his eyes, which is "Yangguan Sandie"

3. Reflected It is a kind of resentful beauty, angry beauty, tragic beauty. In this movement, as the music progresses and unfolds, the angry emotions gradually increase, showing the resentment towards "only loving beautiful women and wine, not the country." The main and polyphonic writing techniques are combined very cleverly here, reflecting a deep tacit understanding. It not only highlights the theme of "Yanggu, setting up the border", but also reveals a bit of tragedy.