Just fill in the basic information such as date of birth, ID number, nationality, graduation school and household registration. Correspondence education originated in the early days of reform and opening up. At that time, due to various conditions, people who upgraded their academic qualifications could only ask and answer questions from teachers by correspondence, take exams by mail, complete all the courses prescribed by the school, and the school issued graduation certificates.

Adult college entrance examination is an entrance examination for adult colleges and universities in China to select qualified graduates to enter higher-level academic education. It belongs to the national education series, is included in the national enrollment plan, participates in the national unified enrollment examination, and is accepted by all provinces, autonomous regions and municipalities directly under the central government. Adult college entrance examination is divided into three levels: junior college entrance examination (hereinafter referred to as junior college entrance examination), senior college entrance examination (hereinafter referred to as senior high school entrance examination) and senior high school entrance examination (hereinafter referred to as senior high school entrance examination). The forms of study after admission include correspondence, amateur and full-time study. Mainly the first two forms, only a few adult colleges and universities are full-time study.