1. Piggy Page series: This is a very popular cognitive picture book for early education. It takes the lovely pig Peggy as the protagonist, and helps children learn basic knowledge such as color, shape, numbers and letters through vivid and interesting stories and pictures.
2. "David won't": This is a very classic cognitive picture book for early education. It takes the little boy David as the protagonist, and helps children learn rules and discipline by telling the story that he can't do something.
3. Bunny: This is also a very popular cognitive picture book for early education. It takes Bunny as the protagonist and helps children learn self-control and responsibility by telling stories about how he abides by rules and disciplines.
4. Bear and his friends: This is a set of cognitive picture books for early education for infants aged 0-3. It takes the lovely bear and his friends as the protagonists, and helps children learn the basic knowledge of animals, plants and seasons through vivid and interesting stories and pictures.
5. Hungry caterpillar: This is a very classic picture book of early education cognition. It takes the caterpillar as the protagonist, and tells the story that he grew into a butterfly after eating food, helping children learn basic knowledge such as numbers, days of the week and months.