Guangyun indicates the pronunciation as huai. Dengyun indicates the pronunciation as huai. The sound is identical to huai. The meaning is the appearance of an uneven mountain valley. In the Odes to the Capital of Wu (Wudu Fu) by Zuo Si, it is written: Deep blue and pure jade, hidden, raised, and craggy. The commentary explains that craggy refers to the appearance of being piled up. Jiyun records that this character is sometimes written in a variant form. Zi Collection, Upper Volume Radical: Mountain (shān) Page 310, Entry 02