1. Analyze the status quo of the selected research field, including the research status quo, existing problems and research gaps, and determine the value and necessity of the research.

2. According to the analysis of the current situation, it is clear what the purpose of this paper is, that is, what problems to solve or what goals to achieve.

3. Explain the research significance of the topic, including academic significance, practical significance and social significance. Explain the value of research results to academic circles and practical applications.