Yu Pian (Jade Chapters) records the ancient script for the character pronounced yin. For annotations, please refer to the section under Radical: Mouth (kǒu), four strokes. Additionally, Jiyun (Collected Rhymes) mentions that it is identical to the character pronounced yin. It may also be written in the variant forms (qí), (yǎn), or (cén). Shuowen Jiezi (Explaining Simple and Compounding Characters) defines it as the appearance of a mountain peaking high. There is another pronunciation: pronounced qin (rising tone), which sounds the same as the character pronounced qin. It is identical to the character pronounced yin. Shuowen Jiezi (Explaining Simple and Compounding Characters) defines it as land with many stones.