What would you do when you want to travel but couldn't? Especially when you know nowhere to go? This series may help you! There are six books in this set for young readers from 4 to 8 years old. It introduces 6 popular parent-child traveling countries and a series of encyclopedic knowledge such as their history, festivals, culture and popular attractions. At the same time, it also introduces the common sense that needs to be known in advance  such as currency policy, time difference, transportation, etc. The books use a cute cartoon image of a little tortoise as the protagonist, leading the children a straightaway reading experience. Interactive questions are set at the end of each book to strengthen children's memory of the content. All real life scenaries and tips are well displayed or painted in this series. Also, the pictures are of comic style, which is lovely and funny for kids to read.