This is a set of joyful growth picture books written by Professor Chen Hui from Beijing Normal University for children aged 2-4. The complete set consists of eight books, namely 'Little Bear Zhuangzhuang,' 'It's Dark,' 'It's My Fault,' 'Where Is the Pine Cone,' '* Time Crossing the River,' 'Go or Not,' 'An Early Spring Day,' and 'Finding Mom.' The books narrate the delightful stories of a pair of bear siblings living deep in the forest. Big brother Bear Zhuangzhuang is clever and brave, while little sister Bear Guoguo is innocent and playful. They eat together, play together, face difficulties and challenges together, accompany each other, and grow happily, becoming the best childhood companions for each other. Children can experience strong sibling bonds and parental love, while learning about responsibility, care, and friendship.