Description: Super addictive Readers are raving about this four-part series! - This year's most popular mystery book - Every elementary school student should have a copy. A must-buy for parents! This series has won the Taipei Deep Reading Award Elementary and Middle School Reading Selection Award, and has been consistently recommended by major parent-child groups, including "What Books Do Elementary School Students Read?", "Our Family's Bedtime Stories," and "Once Upon a Time." A mystery story that children can't stop reading. Brain-teasing, scientific, and detective stories. A new generation of "story king," Uncle Kai's super-popular children's novels, Ai Xiaopo and Ji Fei.
