What was a clue to an article? For example, single-line, double-line, open line, and hidden line.

The clue of the article refers to the clue that runs through the article from beginning to end. It can be a single or multiple line, or it can be an open or hidden line. A single-line clue referred to the article using a single event or character as a clue to unfold the story. For example," Dream of the Red Chamber " used the love story of Jia Baoyu and Lin Daiyu as the main line throughout the novel. The readers could gradually understand the background, personality, relationship, and so on of these two people as the story developed. Multiple clues referred to two or more events or characters as clues to unfold the story. For example, Water Margins had the story of Lin Chong and Song Jiang as the main storyline, while the stories of Wu Yong, Gongsun Sheng, Lu Junyi and other characters were supplemented to give readers a more comprehensive understanding of the relationship between the characters and the plot. Bright clues meant that the readers could clearly know the main plot and context of the story by using clear events or characters as clues. For example, Romance of the Three Kingdoms used the war between Cao Cao and Liu Bei as the main storyline, and through the stories of Cao Cao's advisors and generals, it showed the political struggles and war scenes during the Three Kingdoms period. A hidden clue refers to an event or character as a clue, but the reader does not directly know the background and purpose of the event or character. For example, many of the stories in Strange Tales from a Chinese Studio were legends between ghosts and monsters, but the readers did not know what secrets were hidden behind these stories. The clues play a very important role in the novel, which can help the readers better understand the plot and the relationship between the characters, and also help the author build a richer and more vivid world.