China*********

This book is rich in content, covering unsolved mysteries in many fields, and can stimulate children's curiosity and desire to explore. The author's writing style is also very interesting, telling complex knowledge in simple and easy-to-understand language, which is very suitable for children to read. Moreover, the book also objectively displays a variety of viewpoints, allowing children to learn to think and analyze. All in all, this is a very good popular science book.