Zi Collection, Page Position: Upper Radical: Grass (cǎo) Page 51, Entry 11 Pronounced cāi. Same pronunciation as "鳃". In "Classified Dictionary" (Yupian), it refers to fine hairs. In "Rhyme Supplement" (Zengyun), it refers to thick beards. Sometimes also written as "思". Xu Collection, Middle Volume Radical: Speech (yán) Page 568, Entry 05 Pronounced zī. Same pronunciation as "私". The meaning is the same.