In Taoism, this term is called jingyun, while in the outside world, this term is called Daole. It is necessary not only to hold ceremonies (that is, to do things) but also to recite scriptures, and to communicate with the holy road through phonology. There are many kinds of rhymes, and different regions will have different rhymes. There are differences, just like the characteristics of dialects. The most popular rhyme is Shifang rhyme, which is the same as Mandarin (available online).