Mantsi may be related to the Kathu (Kasu, Gasu) and Mo'ang (mɯaŋ˥˩) languages of Wenshan Prefecture, Yunnan, China (Edmondson 2003).
Lama (2012) concludes that Mantsi (Mondzi) and Maang constitute the most divergent branch of the Lolo-Burmese languages.
Monji or Mondzi is reportedly spoken in some villages of Muyang Township, Funing County, Yunnan, China.
Munji is reportedly spoken by the Flowery Yi (Lolo) of Donggan (董干) Town, Malipo County, Yunnan.
The language spoken by the Red Lolo was investigated by Jerold A. Edmondson in the late 1990s.