1. Different learning styles: Online education is mainly conducted through TV, Internet and other media. Students can finish homework online and browse courses offline. Correspondence is mainly self-study, supplemented by face-to-face instruction. Students need to attend classes in specific places and answer questions through self-taught textbooks, face-to-face lectures and exchanges.

2. Admission methods are different: online education has no entrance examination, and you can enter school if you meet the registration conditions. Correspondence should participate in the adult college entrance examination organized by the national unity.