Every researcher should try his bes

Every researcher should try his best to fully understand the theories and methods related to the problems he is studying, and master the latest information, trends and results. In this part of the literature review, researchers should consider the following questions: first, what studies have been done by the predecessors in this particular aspect; second, whether there are relevant theories for this particular phenomenon, and what are the relevant theories? Different theories; thirdly, what research methods have been adopted in these previous studies, and what valuable results have been obtained; fourthly, what are the defects or deficiencies in the existing research. Of course, if the researchers often read extensively before conducting the research, that is, they are already familiar with and understand the existing research in this field, and the current work is just to make a summary and comment on these studies as needed. .