This paper applies the literature research method.

本论文主要采用文献研究法。

The research methods include of this study is literature research method, interviews and qualitative analysis.

本研究采用的研究方法包括：文献研究法、访谈法和定性分析法。

METHODS: The concerned laws and regulations were studied by literature research method and comparative study method.

方法：采用文献研究方法、比较研究方法研究相关法律规定。

The Literature research method has set up a theoretical foundation for proposing the research purpose and necessity.

本文运用文献研究法奠定了理论基础，提出并分析了研究目的和研究必要性。