Constitution of China
Article 4 [Nationalities, Minorities, Regions, Languages]
(1) All nationalities in the People's Republic of China are equal. The state protects the lawful rights and interests of the minority nationalities and upholds and develops the relationship of equality, unity, and mutual assistance among all of China's nationalities. Discrimination against and oppression of any nationality are prohibited; any acts that undermine the unity of the nationalities or instigate their secession are prohibited.Article 121 [Autonomous Language]
The state helps the areas inhabited by minority nationalities speed up their economic and cultural development in accordance with the peculiarities and needs of the different minority nationalities.
(2) Regional autonomy is practiced in areas where people of minority nationalities live in compact communities; in these areas organs of self-government are established for the exercise of the right of autonomy. All the national autonomous areas are inalienable parts of the People's Republic of China.
(3) The people of all nationalities have the freedom to use and develop their own spoken and written languages, and to preserve or reform their own ways and customs.
In performing their functions, the organs of self-government of the national autonomous areas, in accordance with the autonomy regulations of the respective areas, employ the spoken and written language or languages in common use in the locality.
Article 122 [Minorities]
(1) The state gives financial, material, and technical assistance to the minority nationalities to accelerate their economic and cultural development.Article 134 [Language in Trials]
(2) The state helps the national autonomous areas train large numbers of cadres at different levels and specialized personnel and skilled workers of different professions and trades from among the nationality or nationalities in those areas.
(1) Citizens of all nationalities have the right to use the spoken and written languages of their own nationalities in court proceedings. The people's courts and people's procuratorates should provide translation for any party to the court proceedings who is not familiar with the spoken or written languages in common use in the locality.
(2) In an area where people of a minority nationality live in a compact community or where a number of nationalities live together, hearings should be conducted in the language or languages in common use in the locality; indictments, judgements, notices, and other documents should be written, according to actual needs, in the language or languages in common use in the locality