The book Shan Hai Jing actually describes the monsters in it according to the regional characteristics. This book has a profound study on the origins of many rivers, and also records many countries and mountains, mythical figures and monsters. It is impossible to prove who the author is, but it is generally believed that the author was written by more than one person! Therefore, the origin directly crushed most books by the author, and only by learning from others can we ensure high value.
Why does this book feel mysterious? That's because the things recorded in it are true or false, and many things are found to be true by us. Even if it is not found, it is called different or extinct! So where is its origin?
In fact, there is a book that has been made clear, that is, Zuo Zhuan. This book explains the origin, that is, a dynasty at that time wanted the land of other countries, but it was necessary to know what this country had before it could complete its aggression. So he ordered people to collect the geography and anecdotes of various countries to judge whether it was necessary to invade, and then cast a tripod after capturing the next country. Later, people drew this wonderful book through the study of Ding.
Said it would be fundamental, why didn't Qin Shihuang burn it? Because it is unnecessary, not how great and magical this book is. Two books were burned, but only those books that hurt people, not all of them were burned! Ok, the classic of mountains and seas is over!