Lyricism, discussion, description, and narration were the four commonly used expressions in literature. The specific differences were as follows: Lyric: It is used to express the author's emotions, feelings, and thoughts. It is usually based on poetry, prose, and other literary works. Lyricism was a direct expression of the author's inner feelings and thoughts, allowing the reader to feel the author's emotional changes and inner world. 2. Commentary: By stating the author's point of view and evaluating things, people, or events, the author's thoughts, attitudes, and positions are expressed. The characteristic of discussion was that the author's analysis and evaluation of things were logical and profound. 3. Description: By describing characters, scenery, situations, and other images, it shows the character's personality, appearance, psychology, behavior, and other characteristics. The characteristic of description is to express the image and characteristics of things through the language and actions of the image, with a vivid and vivid sense. 4. Narration: By recording people, events, situations, and other historical things, the author's thoughts and feelings about the past, present, or future are expressed. The characteristics of narration were to record things in the order of time, space, and events, paying attention to the integrity and logic of the events. Different ways of expression have different characteristics and functions. Lyricism is usually used to express feelings and thoughts, to discuss, to elaborate opinions and evaluate things, to describe, to express images and characteristics, to record historical events and people's experiences. In literary works, different ways of expression can also be combined to achieve a more vivid and profound expression.