Every weekend or Monday to Friday night, correspondence teaching mainly depends on self-study. Adult college entrance examination is just an exam, and if you pass it, you will be admitted to an adult university. There are three teaching forms. Full-time amateur and correspondence teaching is similar to full-time teaching. Students eat and live in school and attend classes according to the teaching plan every week. Spare-time teaching is conducted every weekend or Monday to Friday night in winter and summer vacations. Correspondence teaching mainly depends on self-study.