Where did the violin at the end of mango come from?

The violin at the end of mango comes from violin pop music. The last pure music violin performance in Mangzhong is "Mangzhong-Ending Violin", which has no name at all, because it is only a piece of pure music at the end of the song, and the ending quotes other people's music but puts it at the end, so the general music production team will not give it a name. However, this pure music is included in the album Violin Pop Music by violinist Qi Hong.