Reading stories is an instinct for children, and stories that closely relate to real life can make children learn more, helping them produce moral insights in a subtle way. This book presents 30 selected heartwarming stories about children’s growth. Uniquely framed in the form of letters, these stories weave together moral wisdom and life philosophy. This book includes four main sections: “Letters Received”, which reflect the questions and confusions children encounter as they grow up; “Letters Replied”, in which Grandpa Yu Xinyan responds with gentle guidance and thoughtful answers; “Words from Grandpa Yu”, where profound lessons are shared from the perspective of a wise elder; “Fueling Station for Growth”, which encourages children to think, discuss, and explore the themes of each story together. All the stories are rooted in the core socialist values and drawn from children’s real-life experiences at home, at school, and in society. These short stories touch young hearts, serving as a meaningful first lesson in setting life goals.