Archfiend - Chapter 499: Pill Spirit, The Hundred Eras of Spring.

Shi Hao, a young man, managed to turn the tables on a powerful figure trying to possess him. He gained countless cultivation techniques, martial skills, formations, alchemy knowledge, and talisman arts, setting him on a legendary path.Now, every genius and tyrant must bow before him.Those who refuse? They'll be eliminated!

Imagine being forced to live, after death, as incorporeal bodies trapped in a vast space of nothingness for thousands of years, with nothing to do but exchanging past memories with other cohabitants (read: weirdos). Everybody wanted out, but there was no way to leave the Void…

Until one day, a young man was finally summoned, as a powerful but reluctant mentor, by a bubbly and motivated but completely naive young girl. Baiyi, finally out of the Void, was the only one who could save all of the other 32 souls from their prison and his summoner might just be The Key to their freedom.

However, Baiyi had to use the techniques and abilities the other souls had taught him throughout the years, and together with his own extensive knowledge of anime and game tropes from his shady and dangerous past as an otaku, to face the biggest challenge of them all: training the clumsy young girl he was forced to partner up with… into a competent sorcerer!

This is a story of heroic adventures, cunning strategies and romantic tales. How will our MC thrive in a world completely strange to him? Where will his ambitions and abilities take him in the palace?

- Description from Novelupdates

He is a young man without a spirit root. It is believed that this denies him the chance at cultivation. However, a mysterious lady imparts a Supreme Demon Classic to him and from then on, he starts his path of cultivation.
He undergoes a total transformation to emerge as the most fearsome and powerful fiendish demon in his era, that even immortals and fiends are fearful of him, and saints are at his beck and call.
Mastering the Supreme Demon Classic is the turning point in his life. He is able to unleash his immense and divine power from within, illuminating the entire universe!

- Description from Novelupdates

“Congratulations to the host on binding the magnate check-in system.”

This meant there were rewards for checking in.

“Check in successfully. Get one billion assets.”

“Check in successfully. Get the incomparably handsome face of an immortal.”

“Check in successfully at the East Mountain Villa. Get ownership of the East Mountain Villa.

…

Since he bound the check-in system, Chen Yun had been checking in or on his way to check-in.

From then on, a brilliant magnate was on the rise as he traveled through the world and commanded respect. He became the most honorable man in the world!