https://www.academicsaviour.com/summary-dai-xie only lists the objects, objectives, perspectives, methods and main conclusions discussed once in the literature, and without specific substantive information, the reader cannot directly obtain the required facts from the abstract.A considerable part of the abstracts attached to the document are indicative abstracts, which guide reading.Currently, most journals use indicative abstracts(please refer to the English abstract of this article) to attract readers to read the full text of the paper. Intended abstracts usually include the following main contents: purpose and scope, methods and processes, results Many abstracts begin with a brief description of the purpose and scope of the study or experiment, or a statement of the reason for writing the article, while some abstracts also point out or imply the characteristics, results and significance of the study. The purpose and scope should be written specifically, to attract and impress the reader.