Submission requirements and matters of the motherland

1. The manuscript should be scientific, advanced and practical, with clear arguments, reliable arguments, accurate data, rigorous logic and fluent words. 2. The unit of measurement shall be the national legal unit of measurement; Statistical symbols are written in accordance with national standard statistical terms and symbols. 3. The number of words in all article titles should be controlled within 20 words; References are listed at the end of the article in the order of citation; It is suggested to use punctuation correctly and design tables reasonably. 4. The picture should be clear and indicate the picture number; Please indicate the author's name and other information when submitting the manuscript to ensure the independence of the copyright of the article. Be responsible for your own writing, don't contribute more than one manuscript, and be responsible for plagiarism.