Xu Collection, Upper Volume Radical: Metal (jīn) Da Kangxi strokes: 18 Page 1317, Entry 18 Compendium of Rhymes (Jiyun): Pronounced sa. To engrave. Commonly written as the variant form (sa). According to the Correct Meaning Through Investigation (Zhengzitong), it is currently a common tool for turning soil, with a head one foot wide, and its function is superior to that of a plow.