In this world, there are no immortals, only a group of longevity-keepers who possess superior powers.
Despite their powerful abilities, these longevity-keepers are not immortal; they merely enjoy a prolonged lifespan.
The last owner of the Netherworld Book was a man with the last name 'Cui'. A minor official during the early Tang Dynasty, he stumbled upon the Netherworld Book by chance. This allowed him a certain control over life and death, endowing him with the authority of the Underworld Judge.
With the power of the Netherworld Book, he was in charge of adding lifespan to the good and sending the evil to the Netherworld. Due to his position as Underworld Judge, many referred to him as Judge Cui.
In Judge Cui's memory, the early Tang Dynasty was almost a golden age for cultivators, with numerous robust and ancient cultivators co-existing in the world.
