From the Start, I Had the Underworld. My Disciples Shake the Ages

Whenever the world stands on the brink of destruction, a hero always steps forward. Like the Dao Ancestor, who established the path of cultivation and saved all living beings from peril... Like the Empress, who cultivated the Imperial Way and decreed that no demons would be allowed to exist in the world... and others like them! Every one of these people was a great figure from a different era. But what if... they were all disciples of the same person? Lu Wuchen transmigrates to a world teeming with evil spirits that prey on humans. From the start, he comes with an underworld of his own and is bound to the “Legendary Disciple Training Platform of the Underworld” System. As long as he keeps completing the tasks issued by the System, he can earn rewards of extra lifespan. Sometimes, the rewards can be cultivation or magical treasures. The region where he lives is also known as the Underworld. Lu Wuchen had spent his days bored and tucked away in the underworld, until one day a living person suddenly showed up there. From that day on, everything in his life... changed... 【Ding! Host, take him as your disciple and help him spread the Dao throughout the world!】 Many years later, when people leaf through the history books, they discover that the powerful figures who saved entire eras all seem to have one person in common behind them. Digging deeper, they find that these legendary figures throughout history all seem to have come from the Underworld. Most terrifying of all, the Lord of the Underworld... might still be alive!!!