1, full-time undergraduate (refers to the senior undergraduate students, who are about to get their diplomas and degree certificates).

2. Scientific researchers (people who have certain scientific theoretical knowledge and engage in scientific research).

3. Teachers of higher education (persons with the qualifications of teachers in institutions of higher learning).

4. Secondary education teachers (citizens who have obtained the qualification of internship instructors in secondary vocational schools can only serve as internship instructors in secondary specialized schools, technical schools, vocational high schools or junior vocational schools).

5. Other on-the-job personnel (refer to formal employees of public institutions).

6. Adult undergraduate graduates (students who take the adult college entrance examination and graduate from colleges and universities are adult undergraduate graduates).

7. Other personnel (not the above-mentioned occupations or other personnel).