Boy with Dragon Tattoo

A strange old man with a white beard, a boy with a strange totem on his back, and a mysterious jade. What do the mysterious totems represent? Where does this jade come from? Why can't we cultivate immortality in the human world? Why are the world of cultivation and the world of immortality so different? How many secrets are hidden in this world? What kind of adventure story will Li Mu experience when he leaves the mortal world and keeps moving forward?