Research methods of the paper 1. Literature review method The literature review method is a method of collecting and analyzing relevant literature to understand the research status, methods, and achievements in the field, in order to determine your research direction and goals. 2. Empirical research method Empirical research method is a research method that obtains data through actual surveys, experiments, or observations, and uses this data to verify or refute a hypothesis or theory. 3 Case Study Method Case study method is a research method that involves conducting in-depth research and analysis on a specific case, understanding the specific situation, problems, and development trends of the case, and thus deriving general conclusions. 4 Quantitative research methods Quantitative research method is a research method that uses mathematical models, statistical methods, and data analysis techniques to describe and explain the quantitative characteristics and regularity of a phenomenon or problem. 5 Qualitative research method Qualitative research method is a research method that collects data through in-depth observation, interviews, questionnaire surveys, and analyzes and summarizes these data to understand the nature and research conclusions of a phenomenon or problem. Through the above introduction, I believe you have gained a deeper understanding of the research methods used in your graduation thesis. When choosing research methods, it is important to choose based on the topic and research conditions you are studying, and fully consider the advantages, disadvantages, and feasibility of each method.