In ancient China, the most informative works about fairy tales are

In ancient China, the book with the most information about fairy tales was Shan Hai Jing.

The Classic of Mountains and Seas is the book with the most preserved mythological materials in ancient China. Among all the ancient documents, Shan Hai Jing has the most theological value. Among them, there are many absurd myths, such as Yu Yi's flood control, Jing Wei's reclamation, starry sky dance and so on, which are deeply rooted in people's hearts and widely circulated.

Characteristics of Shan Hai Jing:

The Classic of Mountains and Seas is an ancient book with the most information about China's myths. Although it is fragmented, it is relatively concentrated and not very scattered, which is one of its advantages. All the mythological materials are close to the original appearance of the myth, and there are few tampering places, which is its second advantage. Have these two advantages, so when we study the myth of China, we should start with this book, make it generally clear, and then talk about other things.