The main difference between hardcover and paperback was the packaging and cover design of the book. A paperback book is usually written on plain paper with ink or pencil, while a hardcover book is usually written on high-quality paper, printed in color, decorated, and covered. In addition, some hardcover books may also include some additional gifts such as posters, manuals, pamphlets, etc. The main difference between paperback and hardcover was the design and decoration of the cover, as well as the quality of the paper, printing quality, and content of the book. A paperback book usually focuses more on the legibility and practicality of the content, while a hardcover book focuses more on the appearance and decoration of the book. However, some paperbacks and hardbacks contain the same subject matter, but their cover designs and decorations may be different. The main difference between hardcover and paperback was the packaging and cover design of the book, as well as the quality of the paper, printing quality, and content of the book. The type of books he chose should be based on his own preferences and needs.