2. Fairy tales, fables and idiom stories: Andersen's fairy tales, Grimm's fairy tales, Aesop's fables and idiom stories.
3. Philosophical enlightenment: a fallen leaf, fallen leaves in the wind, where did the wind go, stone soup, rickety bridge, donkey turned into stone, 1 10,000 cats, etc.
4. Career enlightenment education: children's career experience series.
5. Number concept training category: "ladder mathematics" series, "life mathematics game" series, etc.
6. Popular science: 100,000 whys, children's popular science museum series, magic life series, Congcong popular science picture book series, etc.
7. Read materials that help build self-identity: Little Elephant, Little Kangaroo, Tiny One, I like being a hippo and Little Dinosaur.
8. Between picture books and plain texts.