Wu Collection, Lower Volume Radical: Stone (shí) Gong (gōng) Kangxi stroke count: 15 Page 834, Entry 10 Compendium of Phonology (Jiyun): Pronounced su (entering tone), same pronunciation as su (entering tone). Meaning: to grind. Also, Zhengzitong: Another definition refers to crushed stone. Should be pronounced as xie (falling tone).