Hai Collection, Middle Volume Radical: Fish (yú) Kangxi Strokes: 20 Page 1475, Entry 01 Pronounced sai. The bones located at the gills of a fish. History of Song (Songshi), Treatise on the Five Elements: In the third year of the Chunhua era, elderly women in the capital used the bones from the gill area of a fish as ornamentation, known as fish mei-zi (a type of adornment). Also pronounced xi (rising tone). Book of Han (Qianhan), Treatise on Law: Fearful and trembling, always in terror. Commentary: Pronounced xi (rising tone), meaning the appearance of fear.