There is a child named Nelly who studies hard, but he is thin and pale, and is often bullied by his classmates. One day, Nelly was bullied again. Caron bravely warned the class and proved his words. From then on, he and Nelly became good friends and were praised by Nelly's mother.

The author tells the story from the perspective of children, vividly shows the children's world and the adult's world by accurately grasping the children's perspective, and deeply analyzes that "childhood is always a psychological distance, always a psychological cut-in, and always a psychological search". To some extent, watching childhood has become a writer's aesthetic ideal, and the narrative from children's perspective is the best carrier to express his aesthetic ideal.

In the novel, the reader sees a child's daily life and thoughts. In addition to the naive vitality and rich inner world of children, readers can't see the author's emotional expression. His emotional tendency is hidden behind Yu Wen, which increases the truth and persuasiveness of the story. This perspective is called "internal focus" in contemporary narratology, which changes the position of the omniscient narrator in traditional narrative, and sees and listens through children's senses.

Narration from children's perspective is an expression that children are willing to accept. This kind of children's literature works is helpful to stimulate children's readers' association and imagine themselves as the protagonist of the story, thus stimulating their reading enthusiasm and aesthetic ability.