Niutouxun, a folk musical instrument of the Hui people, commonly known as "Wow" or "Muxiao" by the Hui people, is a small folk musical instrument made of yellow clay with strong adhesion and durability. It was called "Xun" in ancient times.

"Niutouxun" has a range of five degrees and a scale arrangement of 12345. It can play some simple and slow tunes, such as "North Wind Blows", "Little Cabbage" and Hui folk minors. You can also use it to make bird calls. When some Hui youths in the countryside go on a date, the man will play "Niutouxun" near the woman's house first, and the woman will play "kouxian" to tell him that the two will go out to meet.