U+A701 "꜁" Modifier Letter Chinese Tone Yang Ping Unicode Character

U+A701 "꜁" Modifier Letter Chinese Tone Yang Ping is a diacritical mark used in linguistic transcription, specifically within the Sinological extension of the International Phonetic Alphabet, to denote the yang ping (low level) tone in the reconstruction of Middle Chinese and certain modern Chinese dialects. This character, part of the "Modifier Tone Letters" block, represents a sustained, low-pitched tonal contour, often employed by scholars in phonetic notation or to mark tonal distinctions in romanized texts.