Double-quote marks in a novel usually meant a quote. Citation refers to the re-quote of an existing content in a specific time, place, person, event, thought, etc., in order to achieve a deeper and more detailed description or illustration. In a novel, citations are usually used to quote other people's opinions, experiences, stories, theories, etc. to increase the depth and breadth of the article so that the reader can better understand the content of the article. Quoted expressions usually use double quote marks to highlight the content of the quote. It is important to note that when you quote other people's content, you must ensure the accuracy and authority of the cited content to avoid misunderstanding or ambiguity. At the same time, the use of style and punctuations must be followed to ensure the legibility and cohesiveness of the article.