What are the recommendations for the completed prehistoric time-travel novel?

I recommend the following two books to you: 1. The Hakone Serpent of the Untainted Land was a fantasy romance novel. It told the story of the protagonist who was born with a heavenly eye and was brought back to the Untainted Land by an unscrupulous Taoist to become his disciple. The novel is finished, you can read it without worry! 2. "The World of Poisonous Traversing" was a fantasy novel. It was over! The background of the story was also in the prehistoric times. If you like transmigration and primitive elements, you might as well give it a try. I hope you like my recommendation, Mwah ~😗