It should be a piece of pure music with a score but no name. This piece of pure music is very beautiful. The first part is played with the flute, and the second part is played with the bamboo flute. It also contains the sounds of the morinouqin and the flute. I have been looking for this piece of pure music for a long time, but have never found it. Some people say it is "Su Wu Shepherd" and "Mu Sheep Song", but I am sure it is not these two songs. This piece of pure music sounds a bit sad and difficult, but this piece of pure music is definitely a classic.