What kind of writing technique was this?

The shock of a trivial matter was a commonly used novel writing technique. It mainly described a seemingly trivial matter to trigger the reader's thinking and attention to various aspects such as characters, events, and environments, thus promoting the development of the story and the shaping of the characters. In a novel, a small incident would usually trigger a key plot point that would arouse the interest and curiosity of the readers and motivate them to read further. This writing technique could be achieved by depicting the protagonist's mental journey, shaping the image of the villain, and showing the changes in the environment. In practical application, the writing technique of a small matter's shock needs to be combined with specific plots and characters to attract the readers 'attention with vivid language and sharp contrast, so that they can resonate and resonate emotionally during the reading process.