The dialogue between Lu Su and Lu Meng could play an important role in expressing the main idea of the article. By describing the dialogue between Lu Su and Lu Meng, the readers can understand the main idea of the article more deeply and highlight the main idea of the article. Writing conversations in a novel can help readers better understand the plot and character, and also reveal the thoughts and feelings of the characters. The dialogue between Lu Su and Lu Meng was a plot in the novel. By describing this dialogue, readers could better understand the character and mentality of Lu Su and Lu Meng, and thus better understand the theme of the article. The main idea of the article could be expressed by describing the dialogue between the characters. By describing the dialogue between Lu Su and Lu Meng, the readers could feel the main theme of the article, such as different views on heroism and utilitalism, or the pursuit of power and honor. This kind of performance could be achieved through the perspective and attitude of the characters in the dialogue, and it could also be enhanced by the background and atmosphere of the dialogue. Writing about the dialogue between Lu Su and Lu Meng in the article could help express the main idea of the article. Through this dialogue, the readers could have a deeper understanding of the theme of the article and better understand the content and meaning of the article.