1. Bear and Rabbit: This is a classic picture book, which tells the story of friendship and adventure between bear and rabbit. Suitable for 4-year-old babies to read.

2. Peggy Piggy: This is a very popular picture book series, which tells the life story of Peggy Piggy and her family. The content is easy to understand and suitable for 4-year-old babies to read.

3. Chicken Rainbow: This is a picture book about chicken rainbow, which tells the life experience of chicken rainbow on the farm. The content is lively and interesting, suitable for 4-year-old babies to read.

4. "Puppy Wang Wang": This is a story about puppy Wang Wang, which tells the story of puppy Wang Wang playing, learning and growing up with his friends. The content is easy to understand and suitable for 4-year-old babies to read.

5. The Little Owl and the Moon: This is a story about the little owl and the moon, telling the process of the little owl looking for the moon at night. The content is imaginative and educational, suitable for 4-year-old babies to read.