Chou Collection, Middle Volume Radical: Earth (tǔ) Yu Kangxi stroke count: 12 Page 233, Entry 18 According to the Extensive Rhymes (Guangyun) and the Collected Rhymes (Jiyun), the pronunciation is yu. This is the same as the character for a mountain corner (yu). According to the Explaining Graphs and Analyzing Characters (Shuowen), the term Yu Yi refers to a place in Jizhou at the Yang Valley. This citation references the Book of Documents (Shujing) regarding the residence at Yu Yi, written here as yu.