Animal Growing Story: Duo Duo the Caterpillar, 毛毛蟲多多

This series has four titles: Dou Dou the frog, Duo Duo the Caterpillar, Peng Peng the penguin, and Lili the Owl. They tell the fun details of how they grow up, giving young readers a great opportunity to learn the process of life of these small animals.