U+31B8 "ㆸ" Bopomofo Letter Gh Unicode Character

U+31B8 "ㆸ" Bopomofo Letter Gh is part of the Bopomofo Extended block, a system of phonetic notation used primarily for transcribing Mandarin Chinese and other languages of Taiwan. This specific character represents the sound "gh", which is not a standard phoneme in Mandarin but is used in certain phonetic extensions to denote a voiced velar fricative or similar sound, often appearing in linguistic or dialectal contexts within the Bopomofo writing system. It was added to Unicode to support the complete set of phonetic distinctions needed for more accurate transcription of various Chinese dialects and minority languages.