I think Sanmao is a little inappropriate in students' compositions, but it is good in adults' works. When I was a student, I think many teachers recommended students to write some great stories about celebrities and put them in their compositions, because they felt that the material of celebrities made your composition look rich. It will also make the marking teacher think that you are a student who has read many poetry books. However, I think it is more appropriate to put it in argumentative or prose works, that is, The Story of the Little Prince. I think many people have read this book, but few people have used it in their compositions. This is a book that adults should think carefully after reading. I think if it is applied to composition, it will be appreciated by the marking teacher.
I remember that I used to like to use it when writing a composition. There are many stories in it, which can meet the needs of my different compositions. Every little story is independent and revolves around the little prince. I suggest you read this book first, and then try to apply some useful materials to the appropriate composition. You will find that the composition will look very tall.
I think if students with good writing skills can give it a try, you will find that your composition will be read as a model by the teacher.