Pahawh Hmong Mark Cim So (U+16B31) is a Unicode nonspacing mark from the Pahawh Hmong block. It resides on Plane 1 (SMP, Supplementary Multilingual Plane), has bidirectional class NSM (nonspacing mark), is not mirrored, and has combining class 230 (Above). In HTML it can be written as 𖬱 or 𖬱. Because it is outside the Basic Multilingual Plane, proper font support is required; otherwise a fallback box may be shown.