Si Collection, Upper Volume Radical: Water (shuǐ) Entry: Yu Kangxi stroke count: 17 Page 653, Entry 01 Broad Rhymes (Guangyun), Collected Rhymes (Jiyun), Collected Rhymes and Standards (Yunhui), Correct Rhymes (Zhengyun): Pronounced yu. Yanyu, a river name, located at the mouth of Qutang Gorge. Collected Rhymes (Jiyun): Sometimes also written in a variant form.