U+16F63 "𖽣" Miao Vowel Sign Ian Unicode Character

U+16F63 "𖽣" Miao Vowel Sign Ian is a diacritical mark used in the Pollard Miao script, an alphabetic writing system historically employed for several Hmong-Mien languages in China and Southeast Asia. This specific sign is a vowel modifier that represents the sound "ian," and it is written as a combining mark attached to a consonant letter to indicate a specific syllable rime or tone pattern. Encoded in the Unicode Miao block, it supports the accurate transcription of tonal languages where vowel quality and nasalization are phonemically significant, preserving the orthographic conventions developed by missionary Samuel Pollard in the early 20th century.