Xu Collection, Upper Volume Radical: Metal (jīn) 鉐 Kangxi strokes: 13 Page 1301, Entry 06 Collected Rhymes (Jiyun): Pronounced shi. Tou-shi refers to treating copper with mineral medicinal ingredients. Also, in Classified Compilation (Leipian): Pronounced zu. A surname. Regarding the pronunciation and meaning of this character in Five Sounds Collected Rhymes (Wuyin Jiyun), it is suspected to be an error in Classified Compilation (Leipian).