Mao Collection, Upper Volume Radical: Heart (xīn) 惻 Kangxi strokes: 13 Page 393, Entry 05 Ancient form Pronounced ce Shuowen Jiezi (Shuowen): Pain. Composed of the heart radical and the phonetic component ce. Guangyun: Sorrow. Book of Changes (Yijing), Jing hexagram: The well is cleaned but not eaten from; it makes my heart ache. Yangzi Taixuanjing: Gathering in, the feeling of pain is acute.