The central content, main content, central idea, and theme of an article are all indicators to measure the importance and depth of the article, but there are some differences and connections between them. The core content refers to the core content of the article, usually the most important part of the article, which is the summary and embodiment of the main theme of the article. It usually includes the topic, keywords, and topic sentences of the article. The central content was that the soul of the entire article determined the direction and theme of the article. The main content refers to the main content of the article, that is, the specific details and forms of expression of the theme or theme of the article. The main content would further elaborate on the theme or keywords of the article, and on this basis, the plot, characters, and other aspects would be described. The central idea referred to the main idea of the article, which was the core value and meaning that the article wanted to express. The central idea was that the soul of the article determined the direction of the theme and the depth of the content. Thesis refers to the main sentence or theme of the article. It is the core expression of the main idea of the article. The main idea of the article is usually reflected in the main sentence, which is the core of the article. The difference between these indicators is that the central content is the core and theme of the entire article, which is an important indicator to measure the value and quality of the article; the main content is to further elaborate the theme of the article or the theme of the article is an in-depth expression of the theme; the central idea is that the theme of the article is the embodiment of the core value and significance of the article; the theme sentence is the core expression of the theme of the article.