Rainbow Little Blue is a set of enlightenment education books specially designed for children of this age. It contains 36 original themes, providing children with all-round enlightenment education from the aspects of living habits, personality and social skills. Each theme is guided by the story of Xiaolan and her friends. Through vivid pictures and simple words, they teach children knowledge and guide their behavior. Rainbow Blue covers many aspects of early childhood education, including self-care ability, interpersonal communication, mathematical thinking, natural cognition and so on. , aiming at comprehensively improving children's comprehensive quality and intelligence level. At the same time, Rainbow Blue pays attention to cultivating children's emotional expression and social skills, and helps children build a positive personality.