According to the academic hall, the form of the paper includes the following contents (in order): Chinese abstracts and keywords, English abstracts and keywords, contents, text, notes, appendices and main references. It is a general description of the content of the paper, and it should be faithful to the original text, with 300-500 words. Keywords are words with substantial meaning extracted from the title, abstract or text of a paper, which can express the theme of the paper, usually verbs or nouns, and the number is not less than 3 and not more than 7.