What is the traditional music in TV series?

The Dust Settles is a China TV series, with the music written by Chen Qigang, a famous musician in China. In TV series, Xiao is a common traditional Chinese musical instrument, which is often used to express ethereal and sad feelings.

Since I can't directly determine which soundtrack you are referring to, here are some possible sources and speculations:

1. Theme Song: The theme song of Dust Settled is Dust sung by a famous singer, but this song was not played by Xiao.

2. Episode: In some plots of TV series, there may be some episodes played by Xiao, which may be created to match the emotional atmosphere of the plot. If you can remember the general plot and time, I can help you find the soundtrack more accurately.

3. Original music: The original music of TV series contains all the soundtracks, including Xiao Yan's songs. You can try to find the original music album of TV series and browse the track list to find the soundtrack you want.

4. Internet search: You can try to search the information about Xiao's performance in The Dust Settles, and you may find some resources or clues.

I hope the above suggestions can help you find the source of this soundtrack.