Setting questions is a rhetorical device, and its main feature is to ask yourself and answer yourself, or to question the answer. This rhetorical device is often used to emphasize and highlight a point of view, topic or proposition.

When setting questions, questioners will deliberately ask questions to attract readers' attention, and then strengthen their views by answering questions. The use of questions can enhance the interactivity and attractiveness of the article, guide readers to participate in thinking and discussion, and at the same time highlight key points and strengthen the theme.

Rhetoric of rhetorical question has many applications in writing, such as news reports, academic papers, speeches, advertisements and other styles. For example, in news reports, reporters may arouse readers' curiosity by asking questions, which leads to the following reports;

In academic papers, the author may ask questions or hypotheses, and then answer these questions through research; In a speech, the speaker may introduce the audience to the topic by asking questions, and then emphasize his point of view by answering questions.

Several aspects that should be paid attention to in using rhetorical devices of rhetorical questions. First of all, ask questions reasonably, not casually, and ensure the logical relationship between questions and answers. Secondly, the questions should be concise and clear, not too long or vague. Finally, questions should be closely related to the theme and content of the article, not divorced from reality or irrelevant.

In a word, rhetorical question is a rhetorical device, which emphasizes and highlights a certain viewpoint, topic or proposition by asking and answering questions. The use of this rhetorical device can enhance the interactivity and attractiveness of the article, guide readers to participate in thinking and discussion, and at the same time highlight key points and strengthen the theme. In writing, questioning is a very practical rhetorical device, which can effectively improve the quality and effect of the article.