In order to popularize computer education, train computer professionals, and meet the requirements of various positions for computer ability, the Audio-visual Education Office of the Ministry of Education has set up the only computer training base in China, and conducted the most authoritative computer post qualification examination in China, and issued a certificate as "post certificate" (hereinafter referred to as "post certificate"). China Computer Correspondence College is the computer education and training base designated by the Audio-visual Education Office of the Ministry of Education, and the only authorized examination and certification management center for the post qualification certificate of the Audio-visual Education Office of the Ministry of Education.