Mao Collection, Upper Volume Radical: Heart (xīn) Character: Chu Kangxi Stroke Count: 9 Page 404, Entry 35 Broad Rimes (Guangyun), Collected Rimes (Jiyun), and Correct Rimes (Zhengyun): Pronounced chu (rising tone). Collected Rimes (Jiyun): Meaning pain. Sometimes written in a variant form with the sickness radical. Also, Collected Rimes (Jiyun): Pronounced chu (departing tone). Meaning sharp-witted. Used interchangeably with the character for Chu.