best friend/最好的朋友

This book introduces children to the concept of emotions and the related brain areas and methods of emotion control and expression through describing a story in which a huge monster of unknown origin destroys the city wantonly. Yuan Duoduo turns into a little detective and eventually subdues the monster by tracking its trail, bringing a beautiful rainbow to the city.

本书通过描述来历不明的巨大怪兽肆意破坏城市，元多多化身小侦探，通过追寻踪迹，最终制服怪兽，为城市带来美丽彩虹的故事，向孩子们介绍情绪的概念以及情绪控制和表达的相关脑区和方法。