1. References cited must be helpful for the publication of your paper before they can be cited. It is principled to cite references among them. Generally, when quoting references, you should quote directly related and specific documents to prove your point of view. Direct quotation is better than indirect quotation.

2. Correctly listing relevant references, instead of copying the original text in large paragraphs, only quoting the most important viewpoints and data can greatly save the length of the paper.

3. This journal requires the contributors to mark all the achievements (including viewpoints, methods, data, charts and other materials) cited by the references in the paper, and list them in the list of references at the end of the paper. The author should compile the bibliography according to the national standard GB/T77 14-20 15.