Rhyme groups established by the Yuan dynasty scholar Yin Shifu in the dictionary 韵府群玉yùnfǔqúnyù, which consolidated existing rhymes into 106 categories
open rhyme
In Chinese phonology, refers to syllables or rhyme groups that end in a vowel sound rather than a nasal consonant; also known as 阴声韵yīnshēngyùn.