Understanding the overt and hidden lines of an article usually required the following aspects: 1. Bright lines: Bright lines refer to the main plot and clues directly described in the article, usually described through specific events or the behavior of the characters. These plots and clues would usually be displayed in a clear way, such as titles, passages, dialogue, and so on. 2. Hidden lines: Hidden lines refer to the main plot and clues described in the article through hints, metaphor, metaphor, etc. These plots and clues were often not directly described but implied and reflected through context, dialogue, description, and so on. 3. The role of open and hidden lines: Both open and hidden lines have their own functions. Bright lines allowed readers to quickly understand the plot and the relationship between the characters, thus better understanding the main purpose of the article. The hidden lines could increase the interest and depth of the article, allowing the readers to appreciate the story while thinking more deeply about the meaning and value of life. 4. The difference between an open line and a hidden line: The difference between an open line and a hidden line usually lies in whether it is directly expressed or implied. Bright lines were usually described through specific events or characters 'behaviors, while dark lines usually needed to be implied and reflected indirectly through context, dialogue, description, and so on. In short, understanding the overt and understated lines of the article required in-depth thinking in combination with the specific situation and reading experience to better understand the theme and meaning of the article.