What kind of writing technique is the triple stack?

The triple-fold style was a literary writing technique that was often used to describe the psychological changes and emotional development of characters. In the Trifold Style, a character's emotions went through three levels from low to high. They were the first, second, and third folds. The first stack usually described the current emotional state of the character, such as sadness, anger, fear, and so on. The second stack was about the character's emotional improvement. It described the character's thoughts and feelings to show the complex emotions in the character's heart. The third stack was the character's emotional peak, usually the climax of the character, expressing the deepest feelings of the character. The triple-fold style was often used to portray the character's personality and psychology to enhance the reader's reading experience. Triplets are also commonly used in narrative structures to increase the complexity and legibility of the story by dividing the plot into three parts.