The category code of Chinese periodical articles usually refers to the document type code to which periodical articles in references belong. Depending on the reference specification and the document management software, the code may be slightly different. Generally speaking, the common article category codes in Chinese periodicals include but are not limited to the following:

Journal article (JA): Represents a journal article.

Published articles (AP): refers to articles that have not been officially published but have been accepted by journals.

Early Visit (EA): Represents articles that have been published online but not yet published.

Letter (L): stands for short comments or letters.

Editorial: An article written on behalf of a periodical editor.

Review (R): represents literature review or comment.

News (n): stands for news or report.

Conference paper: a paper or abstract representing a conference.

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The above are commonly used Chinese journal article category codes, which may be different in different fields and literature management software. When recording references, we should choose the correct category code according to the specific situation and format it according to the requirements of the citation specification.