Mao Collection, Middle Volume Radical: Hand (shǒu) Kangxi strokes: 19 Page 462, Entry 02 Pronounced sa. In the Tang Rhymes (Tangyun), Collected Rhymes (Jiyun), and Rhyme Compilation (Yunhui), it is pronounced sa. Identical to the character for disperse (sa). For detailed explanation, see the entry for disperse (sa). Han Yu, Poem on the Lunar Eclipse (Yueshishi): Appearing like scattered sand. Pronounced ca. In the Tang Rhymes (Tangyun), Collected Rhymes (Jiyun), and Rhyme Compilation (Yunhui), it is pronounced ca. The sound of feet treading on grass. Also refers to friction. Sometimes also written in a variant form (ca).