Many universities have correspondence courses, and Ningxia University also has correspondence courses, such as Ningxia Agricultural College, Northwest University for Nationalities, Ningxia Vocational and Technical College, Ningxia Radio and TV University, Ningxia Vocational and Technical College of Finance and Economics, Ningxia Judicial Police Vocational College, Ningxia Branch of Beijing Normal University Network College, and special correspondence courses, such as Ningxia Correspondence Station of China University of Political Science and Law, Ningxia Post and Telecommunications Correspondence College, and Yinchuan Correspondence Station of Beihang University.

You can ask the relevant education department.