Nuosu language in the context of "Liangshan Yi Autonomous Prefecture"

Xichang (Northern Yi: /o̝˨˩dʐo̝˧/) is a city in and the seat of the Liangshan Yi Autonomous Prefecture in the south of Sichuan, China.

The Tangut people (Tangut: 𗼎𗾧, mjɨ nja̱ or 𗼇𘓐, mji dzjwo; Chinese: 党項; pinyin: Dǎngxiàng; Tibetan: མི་ཉག་, Wylie: mi nyak; Mongolian: Тангуд) were a Sino-Tibetan people who founded and inhabited the Western Xia dynasty. The group initially lived under Tuyuhun authority, but later submitted to the Tang dynasty. After the collapse of Tang dynasty, the Tanguts established the Western Xia. They spoke the Tangut language, which was previously believed to be one of the Qiangic languages or Yi languages of the Tibeto-Burman family." Phylogenetic and historical linguistic accounts revealed that Tangut belonged to the Gyalrongic branch of the Qiangic group. The Western Xia was annihilated by the Mongol Empire in 1227, and most of its written records and architecture were destroyed. Today the Tangut language and its unique script are extinct; only fragments of Tangut literature remain.

The Yi scripts (Yi: ꆈꌠꁱꂷ, romanized: nuosu bburma; Chinese: 彝文; pinyin: Yí wén) are two scripts used to write the Yi languages; Classical Yi (an ideogram script), and the later Yi syllabary. The script is historically known in Chinese as Cuan Wen (Chinese: 爨文; pinyin: Cuàn wén) or Wei Shu (simplified Chinese: 韪书; traditional Chinese: 韙書; pinyin: Wéi shū) and various other names (夷字、倮語、倮倮文、畢摩文), among them "tadpole writing" (蝌蚪文).

This is to be distinguished from romanized Yi (彝文羅馬拼音 Yíwén Luómǎ pīnyīn) which was a system (or systems) invented by missionaries and intermittently used afterwards by some government institutions (and still used outside Sichuan province for non-Nuosu Yi languages, but adapted from the standard Han Pinyin system and used to romanize another syllabary based on a subset of simplified Han ideograms). There was also the alphasyllabary (or abugida) devised by Sam Pollard, the Pollard script for the Miao language spoken in Yunnan province, which he adapted for the Nasu language as well. Present day traditional Yi writing can be sub-divided into five main varieties (Huáng Jiànmíng 1993); Nuosu (the prestige form of the Yi language centred on the Liangshan area), Nasu (including the Wusa), Nisu (Southern Yi), Sani (撒尼) and Azhe (阿哲).

The Yi or Nuosu people (Nuosu: ꆈꌠ, [nɔ̄sū]; see also § Names and subgroups) are an ethnic group in southern China. Numbering nine million people, they are the sixth largest of the 55 ethnic minority groups recognized by the Chinese government. They live primarily in rural areas of Sichuan, Yunnan, Guizhou, and Guangxi, usually in mountainous regions. The Liangshan Yi Autonomous Prefecture is home to the largest population of Yi people within China, with two million Yi people in the region. In neighbouring Vietnam, as of 2019, there are 4,827 Lô Lô people (a subgroup of the Yi) living in the Hà Giang, Cao Bằng, and Lào Cai provinces, in the country's north.

The Yi speak various Loloish languages, closely related to Burmese. The prestige variety is Nuosu, which is written in the Yi script.

The Loloish languages, also known as Yi (like the Yi people) and occasionally Ngwi or Nisoic, are a family of 50–100 Tibeto-Burman languages spoken primarily in the Yunnan province of Southwestern China. They are most closely related to Burmese and its relatives. Both the Loloish and Burmish branches are well defined, as is their superior node, Lolo-Burmese. However, sub-classification is more contentious.

The 2013 edition of Ethnologue estimated a total number of 9 million native speakers of Loloish ("Ngwi") languages, the largest group being the speakers of Nuosu (Northern Yi) at 2 million speakers (2000 PRC census).

The Tangut people (Tangut: 𗼎𗾧, mjɨ nja̱ or 𗼇𘓐, mji dzjwo; Chinese: 党項; pinyin: Dǎngxiàng; Tibetan: མི་ཉག་, Wylie: mi nyak; Mongolian: Тангуд) were a Sino-Tibetan people who founded and inhabited the Western Xia dynasty. The group initially lived under Tuyuhun authority, but later submitted to the Tang dynasty. After the collapse of Tang dynasty, the Tanguts established the Western Xia. They spoke the Tangut language, which initial research believed to be either of the Qiangic or Yi groups of the Tibeto-Burman family, later phylogenetic and historical linguistic accounts revealed that it belonged to the Gyalrongic branch of the Qiangic group. The Western Xia was annihilated by the Mongol Empire in 1227, and most of its written records and architecture were destroyed. Today the Tangut language and its unique script are extinct; only fragments of Tangut literature remain.