Chen Collection, Middle Volume Radical: Tree (mù) Yu Kangxi strokes: 13 Page 538, Entry 09 Tang Rhymes (Tangyun), Collected Rhymes (Jiyun), and Collection of Rhymes (Yunhui) define this as pronounced yu (rising tone). Explaining Graphs and Analyzing Characters (Shuowen Jiezi): The name of a tree. Also a surname. Book of Odes (Shijing), Lesser Odes of the Kingdom (Xiaoya): Yu is the Master (Shi). Commentary: The clan of Bao Si. Also, according to Tang Rhymes (Tangyun) and Collection of Rhymes (Yunhui), pronounced yu (falling-rising tone); according to Collected Rhymes (Jiyun), pronounced yu (falling-rising tone); according to Correct Rhymes (Zhengyun), pronounced ju (rising tone). The meaning is the same. Textual research: Book of Odes (Shijing), Lesser Odes of the Kingdom (Xiaoya): Yu is the Master (Shi). Note: The clan of Bao Si. Correction: According to the original text, the Note has been corrected to refer to the Commentary. The character Shi has been corrected to Si.