Ping Shui Yun divides Chinese characters into 65,438+006 rhymes according to the rhymes used in the Tang Dynasty (this book is lost today), which is an abridged version of the earlier Guang Yun with 206 rhymes. Each rhyme part contains several words, which are used as rhyme in rhyme poems. Rhyming words must come from the same rhyme department, and they cannot rhyme or be misused.
During the Kangxi period of Qing Dynasty, Peiwen Yuefu, compiled by later generations, combined Pingshui rhyme into 106 rhyme, which was widely circulated.