Letter learning is a relatively new topic, which will promote the inheritance of traditional letter as an applied style in the network age. In modern teenagers, many people don't express themselves in this form, and may ask for a basic format when grading.
Moreover, the directivity is clear, relatively speaking, the restriction will be slightly stronger, and the openness will be slightly insufficient. Writing articles, students don't have much room for creativity. Most candidates can only talk about driving illegally, why they should call the police and so on. Or they can write down the importance of details, careless little things can lead to big mistakes.
If students can understand the contradiction between "family ties and social morality" in the materials, the article may be more profound from a prudent point of view.