U+A863 "ꡣ" Phags-Pa Letter Xa Unicode Character

U+A863 "ꡣ" Phags-Pa Letter Xa is a historical glyph from the Phags-pa script, an alphabet created in the 13th century during the Yuan dynasty of China by the Tibetan monk Drogön Chögyal Phagpa to unify the transcription of the empire's various languages, including Mongolian, Chinese, and Tibetan. This specific letter represents the consonant sound "xa," akin to a voiceless velar fricative, and is part of a writing system that was used for official imperial inscriptions and documents but eventually fell out of common use after the Yuan dynasty ended, surviving primarily in scholarly and historical contexts today.