The sound of Jiang Yi blowing the leaf was not particularly moving. In fact, it was nowhere near as beautiful as the song the Sonar Thearch played on the zither. To people who loved music, the song that Jiang Yi was playing was really not worth creating a scene over. It belonged instead to the kind of music that peasants listened to.
Jiang Yi was not musically-inclined. When he was little, he did not qualify to study such an upper-class hobby. Instead, he played with grass and leaves just like the other poor children did. That explained his poor choice of musical instrument.