The Tyrant’s Guardian is an Evil Witch - Chapter 16: “Don’t worry.”

Reincarnated into a land of cultivation, Yuan Zhou uses his Earth knowledge and assumptions to become a genius under the heavens for both business and cultivation. However, he walks the path of defiance, exceeding all rational cultivation bounds. His business ideas struggle against the stagnant culture that pervades the land, but the things he doesn't lack are his drive for immortality and power.

When an era came to an end, various forces set foot in cultivation to compete for immortality. A young boy who spent most of the time sleeping got lucky in the troubled times and became an unparalleled immortal who could cover the sky with a snap of fingers. Was he going to live forever?

- Description from Novelupdates

This is a strange and inexplicable world…Mountains, water, stones, flowers, grass, trees, wood, the Sun, moonlight, stars… All creation under the Heavens and Earths are sources of energy. In this world, there are all the classics from his previous world, but there is a new addition: The Law of Dao. Fang Zhengzhi was conflicted. I can obtain power from reading books? Should I read Tao Te Ching first? Or should I read The Art of Becoming Invisible? What about the Analects of Confucius or… The Golden Lotus? With The Law Of Dao as his foundation, can Fang Zhengzhi master the Dao of All Creation and open the gate of God?

Caught up in a ritual performed by a deity of another world, Eiji Choukai was then transported to another realm. The otherworldly deity responsible of the ritual looked at Eiji’s potential incarnations and quickly pulled out Classes like those from, “I Reincarnated Into a Vending Machine.”

But it seems the Classes available for the average person was not available to him. Only the “Parasite” Class was shown.

Without choice, Eiji grudgingly choose the Parasite Class.

His reincarnation into this new world seemed somewhat despondent, but after using his newfound powers, he suddenly realizes its true potential. It seems he’s able to amplify himself countless times by obtaining the powers of others. This luck of his was too good to be true. Seems his level might rise a little bit too much.