1. refinement mode: news headlines convey information directly in a concise way, and strive to attract readers' attention and browse. News headlines summarize and highlight the main content of the article with short phrases or sentences, and convey the core views of the news within a limited number of words.

2. Format requirements: News headlines need to be attractive and creative to arouse readers' interest in reading. News headlines can be humorous, exaggerated or thought-provoking to attract readers. The goal of news headlines is to attract readers' attention and stimulate their desire to read articles.