Broad Rimes (Guangyun) indicates pronunciation as biao (third tone). Collected Rimes (Jiyun) and Rhyme Collection (Yunhui) indicate pronunciation as biao (third tone). Proper Rimes (Zhengyun) indicates pronunciation as biao (third tone). It is pronounced the same as the character meaning surface. It refers to the appearance of a mountain peak towering high. Another interpretation is the summit of a mountain. Yu Chan’s Poem on Gathering Herbs (Caiyao Shi) contains the line: Gathering herbs on the spirit mountain peak. Guo Pu’s Rhapsody on the Yangtze River (Jiang Fu) contains the line: The tips of the clouds crown its peak. Additionally, Broad Rimes (Guangyun) and Jade Chapters (Yupian) indicate pronunciation as biao (first tone). Collected Rimes (Jiyun) and Classified Chapters (Leipian) indicate pronunciation as biao (first tone). It is pronounced the same as the character meaning mark. The meaning is the same. The Detailed Explanation of Characters (Zhengzitong) states that it was originally written as the character composed of mountain and the right-hand component.