Self-study certificates include: national computer grade certificate, second-class constructor, teacher qualification certificate, primary accounting certificate and securities qualification certificate. These certificates will have some restrictions, but like the national computer examination, they will not be restricted by age, occupation, education and other backgrounds. Everyone has the opportunity to choose one of the subjects and levels according to their own situation. Teacher qualification certificate is the license of teachers in the education industry. Teachers' students need to pass Grade 2 B in Putonghua test to obtain teacher qualification certificate.

There are also some certificates that require college students to take the exam, such as CET-4 and CET-6 certificates, tour guide certificates, human resource managers and so on. A certificate is not only a certification, but also a proof of ability, so it is always good to take more exams.