Zou the Postman; Zou the Detective

S1, E103: Zou decides he wants to be a postman. At first, he is most helpful delivering items to his family members, but when he gets over-confident, the various packages are delivered to the wrong addresses. Luckily, Grandpa is here to help. Zou decides that he is going to be a detective. His first case is the Mystery of Nanna's Missing False Teeth.