Mao Collection, Upper Volume Radical: Heart (xīn) Kangxi strokes: 15 Page 399, Entry 08 Collected Rhymes (Jiyun) states the pronunciation is ao (falling tone), synonymous in sound with ao. Explaining Graphs and Analyzing Characters (Shuowen Jiezi) defines it as arrogant. Originally written under the Radical: Person (rén) as ao. There is also a variant form written under the Radical: Heart (xīn). History of the Later Han (Hou Hanshu), Biography of Cui Yin, records: Those who are born into nobility are arrogant. Collected Rhymes (Jiyun) also records it written as ao, and as a variant form. It is interchangeable with ao.