Sign in to the Dao Code of Heaven and Earth After Traveling Through Time

The novel mainly tells the story of the protagonist Xu Yang, who activates the sign-in system after traveling through time. After his spiritual energy recovers, he establishes a sect under the guidance of system tasks, explores ruins, fights against monsters from the demon world, challenges the mysterious tower in the world of cultivation, ascends the list of geniuses, reveals the mysterious and dangerous places in the world of cultivation, and ascends to the fairy world with his lover, leaving a piece of their legend in the fairy world.