Si Collection, Upper Volume Radical: Water (shuǐ) Entry: ru Kangxi Strokes: 10 Page 622, Entry 10 Broad Rhymes (Guangyun): Pronounced ru. The name of a river located in Nanjun. Also, Broad Rhymes (Guangyun): Pronounced ru (falling tone). Explained in the Explaining Graphs and Analyzing Characters (Shuowen) as damp or moist. Book of Odes (Shijing), Odes of Wei: Those marshy lands by the Fen River.