Miao Vowel Sign Ung at U+16F70 is a vowel sign used in the Miao script to write the vowel value transliterated as “ung.” It is part of the Miao Unicode block, which represents the Pollard-based writing system used for several Hmongic languages, especially in southwestern China. In practical text, this sign is used with Miao consonant letters to form syllables rather than as an independent alphabetic letter. It appears in language primers, hymnals, dictionaries, Bible translations, and community materials written in Pollard Miao, where vowel signs mark the rhyme of a syllable and interact with tone notation. Linguists and font developers encounter it when documenting Miao orthographies or testing support for the Miao block. Because Miao vowel signs have script-specific positioning behavior, poor font or shaping support can make syllables display incorrectly even when the underlying characters are present.