The adult college entrance examination professional code 10 1 is stipulated by the Ministry of Education, which is used to distinguish different levels and different types of graduation certificate issuing institutions or departments. Numbers have a wider meaning: 1 stands for ordinary higher education (including unified recruitment and self-taught examination), 2 stands for network distance education, 3 stands for TV University, 4 stands for correspondence, 5 stands for night school, 6 stands for full-time job training, 8 stands for various part-time jobs and 9 stands for on-the-job graduate students.