This problem might have originated from the setting of many novels and movies where the height of the male and female protagonists was set to 180cm and 165cm respectively. However, this was not certain. In fact, the plot setting of a novel or movie might come from the author's or editor's ideas or to create specific character characteristics. In some novels, the height of the male and female protagonists was set to 180cm and 165cm respectively, which may be to create a strong contrast to make the characters more eye-catching and attractive. For example, the height of the male protagonist could be regarded as a special charm to attract the attention of the female protagonist and strengthen the emotional connection between the two. In addition, some novels might use height differences to create tension and drama in the plot. For example, the female lead might be taller than the male lead, which would show a kind of challenge and threat, making the relationship between the characters more complicated and tense. There might be many reasons for the height of the characters in the novel, but the ultimate goal was to create a complete story and character image.