Si Collection, Upper Volume Radical: Water (shuǐ) Entry: cha Kangxi strokes: 7 Page 604, Entry 10 Pronounced cha A branching stream or tributary of a river. Han Yu, Biography of Prince Cheng of Cao (Cao Chengwang): Walking across the branching streams of a river. Also, according to the Rhyme Collection (Yunhui), Yancha is a place name. There is currently a Sancha River in Liaodong.