Literature review is the source of listing and summarizing the materials cited in your paper. To put it bluntly, it is to tell everyone where you copied your paper and how you found it. The focus is on where you copied it, not what you copied. Do you see it?

A complete paper must have a literature review and a reference index at the end of the paper.

Literature review refers to the theme and content of your paper, how you study it and how to refer to other people's research results. To put it bluntly, it is the research degree of others on your thesis topic in the past, so you should learn from it.

That's what it means, but you can't write everything you want to copy in the literature review. I suggest you write something simple in it.

Dude, literature review is not a condensed summary of papers, but a link between the past and the future.