It should reflect the main points of the paper and can be read without affecting the understanding. Try to avoid using too professional words, special symbols and formulas. When writing carefully, it is not appropriate to choose a few words from the article or just repeat the conclusion. The reference serial number cannot appear in the abstract. The required number of words is 120 words ~ 150 words. The English abstract should include the following contents: title, author, unit, city where the unit is located, postal code, abstract content and key words. Name (year of birth-), gender, native place, professional title, research direction.