Wu Collection, Lower Volume Radical: Cave (xué) 穼 Kangxi Stroke Count: 9 Page 863, Entry 11 Broad Rhymes (Guangyun): Pronounced sen. Refers to a deep and remote cave. Identical in meaning to the character for deep. Also used as a surname. Sencun, appearing in Collected Explanations of the Book of Changes (Yijing Jijie) by Li Dingzuo.