This poem comes from Li Ping Yong Yin, a poet in the Tang Dynasty. "Wu Si is comfortable and Zhang Tong is in high autumn, and the empty mountains are not flowing. Jiang E sings bamboo sorrow and Li plays China. " It means that Hunan and Hubei shed a little tears with bamboo, and Motome was also affected by sadness for nine days; Where does this wonderful music come from? It is musician Li Ping who plays the piano in Beijing.

Yayue is a traditional stringed instrument in ancient China, also known as plucked instrument. In ancient times, in addition to the use of court music, it was widely circulated among the people, with beautiful timbre and rich and delicate musical feelings. In this poem, the poet vividly describes the beauty and touching of music through figurative metaphor.