Si Collection, Upper Volume Radical: Water (shuǐ) Yu; Kangxi strokes: 13; Page 637, Entry 23 According to the Extensive Rhymes (Guangyun), pronounced yu. According to the Collected Rhymes (Jiyun), pronounced yu. The name of a river. According to the Explaining Graphs and Analyzing Characters (Shuowen), the river originates from the mountains west of Xiangguo in the state of Zhao. Also, according to the Collected Rhymes, pronounced ou. Also pronounced wu (rising tone). The meaning is the same.