The rhyme board is mainly used as a Theravada Buddhist instrument in Buddhist activities. The big ones are hung in the Buddhist hall, and every time the scriptures are opened, chanted, terminated, and closed, etc., they must be tapped several times; in the ceremony of opening and closing the altar, the big rhyme board is the leading musical instrument, and then the drum and the busy. , cymbals, conch, etc. can be heard in unison.
When monks live, eat, and go up and down the Buddhist temple, they should also be tapped as a signal. When not in use, tie it to the inner pillar of the Buddhist hall.
Small rhyme boards are used on occasions such as when the Buddha is on the street, entering villages, etc. The little monk accompanies him while walking and hitting, to signal the women on the road to quickly avoid it. The novice also taps the small rhyme board as a signal when making alms. Yunban is only used in Buddhist monasteries.

In the Buddhist halls of Theravada Buddhist monasteries, there is also a circular rhyme board, which is called Cadmium Dan in Dai language. Next to the rhyme board.
Whenever the Buddha finished reciting a passage of scriptures, he would tap several times, the pronunciation is bright, the tone is pure and crisp, the reverberation is long, and the sound is far-reaching, making the Buddhist hall full of solemn and mysterious religious atmosphere. This circular rhyme board is also used in the folk percussion ensembles of the Dai and Bulang peoples.