This book is a 20 format hardcover pop-up book. The book skillfully sets up multiple fold-out pages and mechanism pages, which significantly improves children's interest in reading so that children can continue to explore. In this book, the little tiger's mother invited the animals to the tiger's birthday party and entrusted the little bee to send a letter to open the story. The little bee met many small animals along the way, and some exciting things happened, and some difficulties occurred. At the end, everyone showed up at the little tiger's birthday party. Many idioms related to animals are interspersed, explained, and exemplified at the end of the book.