Yin and Yang

The vast yin and yang shift, and life is like morning mist. A book called "Yin Yang Lu" tells all the mysteries of the world, what are the grievances and grievances between the nine arts and eighteen arts. Relying on the clues in the book, the protagonist continues to pursue the secrets left behind by his grandfather, from the tomb of King Yelang to the tomb of Sima Rui of the Eastern Jin Dynasty. What secrets were left behind by the thirty-six countries in the Western Regions back then, allowing the protagonist and his party to pursue them to the Tibetan Plateau? What kind of story will this be? Let us follow the protagonist's steps and slowly enter the story...