This focus is to summarize the existing literature, carefully introduce the existing research on related topics at home and abroad, first introduce the situation objectively, truthfully state other people's views, then make comments and then make subjective comments, evaluate the shortcomings of the existing research, and say that there are still many problems worth studying. Include the topics to be discussed. Because of the lack of research, you should study it. The paper is based on literature review, not what you want to write. If you don't make a summary, it is very likely that your topic has been deepened by others.

Second, why write this?

This is mainly to explain the significance of your topic. It can be said that, in theory, if you find any shortcomings and research gaps in others, it is of theoretical value for you to do it. Then you should be clear about the position of the topics you selected from the literature review in the whole related research field. This is the theoretical value. Then we can talk about it from the actual value. It is what this topic may mean to reality, what use it may have in practice, and so on.

Third, how to write?

In the opening report, you should also explain clearly how to solve this problem after you choose this topic. If you have a question, how will you find the answer? Say your general idea and focus on what method you want to learn. Such as literature analysis, interviews, questionnaires, quantitative research, experimental research, theoretical analysis, model testing and so on.

In the above three aspects, literature review is the focus. Without literature review, you can't find your own topic, and you don't know what others have done on this topic, so review it carefully. Of course, the purpose of review is to bring out your own topics, so you can't forget to comment.