"Danyan" was originally a widely circulated piece of Henan quzi bantou tune. After years of continuous enrichment, refinement and change by artists, it has unique plot conception, tune structure, timbre techniques and other aspects. place. In Mr. Cao Dongfu's notation, he used the fingering of the middle finger to tick and count the strings, which greatly enriched the expressiveness of the guzheng. This piece combines narrative, objects and lyricism, with clever conception and layout, and depicts the hunting scene of hunters with vivid musical images.

The first section of the song is clear and smooth, depicting the scene of hunters hiding and aiming after finding a flock of geese; in the second section, the right hand alternately plays octaves, combined with the middle finger to tick the strings and the up and down glides, which vividly simulates The chirping sound of the wild geese suddenly taking off after being frightened by the gunshot; then, the music suddenly slows down, the left hand presses the sound, the portamento and the fine trembling, so that the sound effect of the fasheng sol successfully expresses the wailing and struggle of the injured lone geese. Subsequently, the chirping of the geese appeared again and gradually became weaker, and the tempo of the music gradually slowed down, vividly depicting the scene of the geese wandering in the air, unable to bear to leave, but finally flying high and disappearing in the sky because they could not save their partners. .