Gorky said: "(at first) it is like setting the tone in music. It gives the tone of the whole song, which is where the author spends his time." At the beginning of the paper, we should pay attention to "short, fast and beautiful", that is, we should be concise, and it is best to divide three or two sentences into paragraphs to introduce this theory. A short beginning can avoid verbosity, and short sentences are divided into paragraphs, highlighting the importance of their content in space. To be quick is to get to the point quickly. It is best to point out the basic ideas or themes of the article in a few sentences. Because there is a "clear center" regulation in the grading standard. Determining the center at the beginning is conducive to the reviewers' scoring and the author's discussion, avoiding writing taboos such as unclear topics and changing topics halfway. Beautiful means wonderful. This is also the "phoenix head" mentioned in traditional literary theory. The most prominent function of a wonderful beginning is to attract the examiner and leave a good impression on him. The beginning of the article should be wonderful, and the argument should be introduced by rhetorical devices such as metaphor, analogy and parallelism. You can also quote famous sayings and tell fables to introduce the topic.