Yin Collection, Middle Volume Radical: Mountain (shān) Huan Page 310, Entry 37 Broad Rhymes (Guangyun), Collected Rhymes (Jiyun), Rhyme Meetings (Yunhui), and Correct Rhymes (Zhengyun): Pronounced huan. Also pronounced heng. Same meaning. Literary Expositor (Erya), Explanation of Mountains: A small mountain that is higher than a large mountain is called huan. Commentary: Xing Bing says: When a small mountain and a large mountain are adjacent, and the small mountain is higher than the large mountain, it is called huan. Collected Rhymes (Jiyun): Sometimes also written in a variant form.