Are there any novels about traditional culture?

There are many myths and legends in Shan Hai Jing and Huai Nan Zi.

Mu's biography can also describe Zhou Muwang's journey to the world, including the Queen Mother of the West.

The Biography of Immortals written by Ge Hong in the Eastern Jin Dynasty is also good, and it is a collection of strange stories in ancient China.

I hope it helps.