Radio and TV University, Night University and correspondence education all belong to adult higher education. The difference lies in the different forms of learning or running a school (but now the difference is very small. For example, there are also face-to-face lectures by correspondence, and TV universities don't always teach through TV, but also face-to-face, and night universities don't always have classes at night, but also on weekends, mainly highlighting the amateur nature).

The so-called correspondence learning refers to a form of learning with self-study as the mainstay and face-to-face instruction as the supplement. At present, correspondence education generally passes the national entrance examination for adult education, and then attends face-to-face lectures within the specified time under the arrangement of adult education colleges of various universities. After each face-to-face course, the graduation diploma electronically registered by the Ministry of Education will be awarded.

There are generally two situations in TV universities, one is face-to-face teaching, and the other is so-called distance education.