The junior college is a three-year program. In China, professional education is undertaken by higher vocational colleges, and some ordinary undergraduate colleges also offer professional courses. What is awarded is a diploma of a general college or an adult college, not a degree certificate at the college level. Extension of information major, before 1999, refers to junior college education (referred to as junior college). After 1999, specialized education usually refers to the professional education of higher vocational education (hereinafter referred to as higher vocational education) in addition to the specialized education of teachers, medicine and public security. On the basis of completing secondary education, it is to cultivate and master the basic theory and professional knowledge necessary for this major, and to have the basic professional skills (vocational skills in higher vocational colleges) and preliminary ability to engage in practical work in this major.