Si Collection, Upper Volume Radical: Water (shuǐ) 澳 Kangxi stroke count: 17 Page 653, Entry 28 Pronounced yu. According to the Explaining Graphs and Analyzing Characters (Shuowen Jiezi), it refers to a corner or bend along a riverbank. It is commonly written in the variant form (ao). In the Extended Mirror (Shenjian) by Xun Yue, it is written: "Like chaos falling into a deep corner." The commentary states: An area near the water, inside a bank. Pronounced ao. Deep. Also refers to the name of a river.