If you want to read it for yourself:
Article 4 All ethnic groups of the People’s Republic of China are equal. The state shall protect the lawful rights and interests of all ethnic minorities and uphold and promote relations of equality, unity, mutual assistance and harmony among all ethnic groups. Discrimination against and oppression of any ethnic group are prohibited; any act that undermines the unity of ethnic groups or creates divisions among them is prohibited.
The state shall, in light of the characteristics and needs of all ethnic minorities, assist all ethnic minority areas inaccelerating their economic and cultural development.
All areas inhabited by ethnic minorities shall practice regional autonomy, establish autonomous organs, and exercise the power to self-govern. All ethnic autonomous areas are inseparable parts of the People’s Republic of China.
All ethnic groups shall have the freedom to use and develop their own spoken and written languages and to preserve or reform their own traditions and customs.
