The Li's notation -j which belongs to the zh rhyme group.
 zhi (inner) A rime table or rhyme table (simplified Chinese: ; traditional Chinese: ; pinyin: yuntu; WadeGiles: yun-t'u) is a Chinese phonological model, tabulating the syllables of the series of rime dictionaries beginning with the Qieyun (601) by their onsets, rhyme groups, tones and other properties. 
