Both. According to the inquiry of official website of Nanchang University, it is known that there are many majors in electrical, mechanical and information in the postgraduate entrance examination of Nanchang University in 2022, that is, there are both electrical and mechanical majors in the postgraduate entrance examination of Nanchang University. Nanchang University, located in Nanchang City, Jiangxi Province, is a national "double-class" construction university and a national "2 1 1 project" key construction university jointly established by the Ministry of Education and the Jiangxi Provincial People's Government.