https://en.wikipedia.org/wiki/Serbi–Mongolic_languages
網頁Serbi–Mongolic Xianbei–Mongolic Mongolic–Khitan (tentative) Geographic distribution Mongolia, northern China, Lake Baikal region Linguistic classification proposed language family Serbi–Mongolic, or Mongolic–Khitan, is a proposed group of languages that includes the Mongolic languages as well as the Para-Mongolic languages, a proposed …