270 million of Harry Potter books have been printed worldwide, and all of these books would go around the equator 1.4 times if placed end to end. It seems like magic, but it's absolutely true. It is so popular because of its vivid characters, magical setting and wonderful writing.

First of all, the characters are vivid because they are complex. For instance, Harry who has a lightning shape scar on his forehead is hardworking and precocious; he usually gets up early and makes breakfast for the family. However, children will be children, so he is also nervous when he first comes to Hogwarts and hears they will have a test before they take their seats in the great hall. In addition, Hagrid is helpful; he helps Dumbledore by taking Harry shopping for school supplies and he also helps Dumbledore take care of the Hogwarts's business. Also, he can be depicted...