蒙自 Traditional form: 蒙自 Pinyin (reading): Méngzì Definitions: Mengzi county in Honghe Hani and Yi autonomous prefecture, Yunnan Characters: 蒙 - to cover; to deceive; Mongolia 自 - self; private, personal; from Traditional characters: 蒙 - to cover; to deceive; Mongolia 自 - self; private, personal; from