Both Pocket Detective and Magic Library are adventure books for children, but the difference is that Pocket Detective is set in the world, which is more open and only involves more content.

Pocket Detective tells the story of Ai Xiaopo, a 9-year-old third-grade boy in Wu Tong town near the Yangtze River. He is a little detective who never stops solving crimes. He flew with an alien chicken that accidentally strayed into the earth. He needs to use his brain to make energy to charge the spacecraft in order to return to his home planet as soon as possible. Through thinking, investigation, research and reasoning, he can solve a series of wonderful stories around him.