There are many types of children's book in the children's book market, such as flip book, pop-up book, sticker book, comic book, story book, etc. But as parent, most of us will choose a flip book as our children's enlightenment books. Why? I sum up the be...

Children often ask many kinds of questions that adults can not answer. "Why do earthquakes occur on Earth?" "What is space? What is there in space?" "Will dinosaurs eat dinosaurs?" “Why does the puppy only bark?”...... Every parent has a deep understandin...