Asking questions is a common rhetorical device, often used to express emphasis. In order to emphasize a certain part of the content, deliberately ask questions first, ask questions knowingly, and answer them yourself. The correct use of questions can attract people's attention and inspire thinking; it can help to clarify the layers and compact the structure; it can better describe the characters' ideological activities; it can highlight certain contents and make the article make waves.
In terms of expression, starting with a question and putting forward your own positive opinions in self-questions and answers can form a sharp contrast between correct and wrong opinions. Put forward the argument straight to the point, attract attention, introduce the topic, and arouse the reader's interest.