You Collection, Upper Volume Radical: Speech (yán) Kangxi Strokes: 13 Page 1156, Entry 01 Pronounced xu (rising tone) Shuowen Jiezi (Explanation of Simple and Compound Characters): To speak grandly. Yupian (Jade Chapters): To speak like a person. Guangyun (Expanded Dictionary of Rhymes): Harmony, universal, pervasive, great. Book of Rites (Liji), Rites and Ceremonies: Virtue is displayed and spreads to all things. Commentary: This means that a king who possesses the four seas should display his virtue so that it pervades all things. History of the Former Han (Qian Hanshu), Biography of Yang Xiong: Obsessed with extreme luxury, ornate and boastful. Commentary: Xu means great. Also, Guangyun (Expanded Dictionary of Rhymes): Quick-witted and brave. Book of Rites (Liji), Lesser Rituals: In assemblies, be quick and brave. Commentary: Xu refers to being quick-witted and brave. Also, the appearance of language and spirit being bright and flourishing. Also, a name. History of the Former Han (Qian Hanshu), Annals of Emperor Ping: The Governor of Peijun, Shi Xu. Shuowen Jiezi (Explanation of Simple and Compound Characters): Originally written as the variant form.