1. Literature research method: By consulting relevant books, periodicals, newspapers and other literature materials, the required data and information can be obtained. This method is suitable for in-depth study of a problem.
2. On-the-spot investigation method: Through on-the-spot visits and interviews, first-hand information is directly obtained from the research subjects. This method is suitable for the empirical study of phenomena or problems.
3. Questionnaire: By designing the questionnaire, the respondents were distributed and their answers were collected. This method is suitable for a large-scale investigation of a group or individual.
4. Experimental research method: By designing and implementing experiments, observing and recording experimental results, the required data can be obtained. This method is suitable for verifying causality.
5. Online survey method: distribute and collect respondents' answers through online platforms, such as WeChat and Weibo. This method is suitable for rapid investigation of a certain group or individual.
6. Second-hand data method: Obtain the required information by purchasing or using existing second-hand data such as databases and statistical data. This method is suitable for macro analysis of problems.
7. Case study method: Through in-depth analysis of a specific event or phenomenon, the required data are obtained. This method is suitable for in-depth discussion of a specific problem.