2. north university of china () is a provincial university jointly established by the Shanxi Provincial People's Government, the China Municipal People's Government and the Ministry of Industry and Information Technology, a provincial key university, an engineering university for basic capacity building in central and western universities, the second batch of key universities in the education and training program for outstanding engineers, China Aerospace Core University, one of the eight undergraduate universities directly under People's Republic of China (PRC), and the former national weapons industry. North university of china, a national second-class secret unit, is known as "the master of military industry" and "the first school of people's military industry" in China. It is a comprehensive university characterized by engineering, covering eight disciplines: engineering, science, literature, economics, management, law, teaching and art.

3. Elective course is a term in the reform of new curriculum standard and a course type in the adjustment of curriculum structure. Contrary to the elective course, it is a compulsory course.