通过手工文献检索方式、查阅图书书籍，对相关研究内容分析，可以发现学者从

By way of manual literature search, review books books, relevant research content analysis, the study can be found from different perspectives, different groups, different ways of scholars, many of whom insights. Causing high attention and positive response of the research results.

Through the manual literature retrieval method, the review of books and books, the analysis of the relevant research content, we can find that scholars from different perspectives, different groups, different ways of research, which is not lack of insight. Research results that have attracted high attention and positive responses.

Through manual literature retrieval, reading books and analyzing the relevant research content, we can find that scholars carry out research from different perspectives, groups and ways, among which there are many insights. Research results that have attracted high attention and positive response.