Literature citation
When a paper quotes references, it is not necessary to copy the original text, but also to quote the general idea and describe it in your own words. Citation can be divided into explicit citation and implicit citation. Explicit quotation refers to quoting the original text directly with quotation marks, or only quoting the main idea of the original text without quotation marks, but indicating the source of the original text. Dark quotation refers to weaving the quotation into your own words, without explaining the source of the quotation, without quoting the original sentence, or only quoting the general idea.