Northern Yi

Nuosu (or Nosu) (Nuosu: ꆈꌠ꒿ Pronunciation: Nuosuhxop), also known as Northern Yi, Liangshan Yi, and Sichuan Yi, is the prestige language of the Yi people; it has been chosen by the Chinese government as the standard Yi language (in Mandarin: Yí yǔ, 彝語/彝语) and, as such, is the only one taught in schools, both in its oral and written forms. It is spoken by two million people and is increasing; 60% are monolingual. Nuosu is the native Nuosu/Yi name for their own language and is not used in Mandarin Chinese; although it may sometimes be spelled out for pronunciation (nuòsū yǔ 诺苏语/諾蘇語), the Chinese characters for nuòsū have no meaning.

The occasional terms 'Black Yi' (Mandarin: hēi Yí 黑彝) and 'White Yi' (bái Yí 白彝) are castes of the Nuosu people, not dialects.

Nuosu is one of several often mutually unintelligible varieties known as Yi, Lolo, Moso, or Noso; the six Yi languages recognized by the Chinese government hold only 25% to 50% of their vocabulary in common. They share a common traditional writing system, though this is used for shamanism rather than daily accounting.

The Qumusu 曲木苏 (Tianba 田坝) dialect is the most divergent. The other dialects group as Niesu 聂苏 (Suondi and Adu) and as Nuosu proper (Muhisu 米西苏, Yinuo 义诺, and Shengzha 圣乍). Niesu (distinguish Nesu) has lost the voiceless nasals and has developed a couple diphthongs.

The Yellow Yi 黄彝 of Kunming, central Yunnan, who call themselves Nisu, also speak a Northern Yi dialect (Bradley 2005). The Yellow Yi had originally migrated from Sichuan, and live in 4 villages in northwestern Fumin County (endangered) and 1 village in northwestern Anning County (moribund, highly endangered). It is most closely related to Suondi Yi (Bradley 2005).

Adu 阿都话, characterized by its labiovelar consonants, is spoken in Butuo County 布拖县 and Ningnan County 宁南县 of Liangshan Yi Autonomous Prefecture, Sichuan province, and also in parts of Puge County 普格, Zhaojue County 昭觉, Dechang County 德昌, and Jinyang County 金阳 (Pan 2001).