"ABCDE" magazine is based on whether it is SSCI, A &；; HCI is included and published by classification level. The classification basis of ABCDE extended information periodicals is whether they have passed SSCI A & amp； Yes. Classification of SSCI collection and publishing units, in which Grade A refers to the periodicals contained in ...: HCI. Class B refers to other journals included in CSSCI, as well as papers and Xinhua Abstracts included in ISSHP. Class C is a periodical that has not been included in CSSCI but has been included in the Outline of Chinese Core Journals, which has an important influence on the discipline.