Bai Juyi's "Pipa Play" and Li He's "Li Ping Kong Hou Yin" are both masterpieces depicting colorful music. However, both have their own characteristics, different approaches and similar results, and compete with each other for excellence. Bai Juyi described the sound of the pipa from the front through metaphors in real life, while Li He used the reflection in the fantasy realm to highlight the sound of the konghou from the side. The poet skillfully used myths and legends, bold associations, and magnificent colors to reproduce the beautiful music and strong artistic charm of the harp's performance.

"Pipa Song": The sound and mood of the pipa music are copied through a series of metaphors and described directly. Only the sentence "Jiangzhou Sima's green shirt is wet" is used to illustrate it from the side.

"Li Ping Konghou Yin": side foil, frontal description, synaesthesia, imagination, exaggeration, myth.