Three Friends You Didn't Know

Why do people hiccup? Why do they get sick? Maybe every child has asked their parents. For these questions, the author has answers in his way in this book. This book tells children the original rigorous scientific issues in the form of fairy tales. Perhaps this will plant a seed in the heart of the child's young heart, which will continue to take root and sprout with growth, and realize the philosophy as the wings become full.