Arifureta Shokugyou de Sekai Saikyou (WN) - Volume 3 Chapter 10

Defy the Gods, Defy the laws that govern the universe, Defy space and time, Defy fate, defy death,Defy ‘I’. defy defying it selfselfish, cautious, envious and ruthless mc(new writer/ no experience writing whats so ever, so don't expect much ) ( English is not my first language)(high fantasy)

A prestigious senior mechanical engineer in the industry, Xu Yi was sent to a world dominated by magic.

In a world with an almost non-existent industrial system, how can Xu Yi display his value?

When magic collides with modern technology, when magic merges with machinery, that is the beginning of this story.

Traversing into another world, Zhang Xuan finds himself becoming an honorable teacher.

Along with his transcension, a mysterious library appears in his mind.

As long as it is something he has seen, regardless of whether it is a human or an object, a book on its weaknesses will be automatically compiled in the library.

Thus, he becomes formidable.

“Emperor Zhuoyang, why do you detest wearing your underwear so much? As an emperor, can’t you pay a little more attention to your image?”

“Fairy Linglong, you can always look for me if you find yourself unable to sleep at night. I am skilled in lullabies!”

“And you, Demon Lord Qiankun! Can you cut down on the garlic? Are you trying to kill me with that stench?”

This is an incredible story about teachers and students, grooming and guiding the greatest experts in the world!

- Description from Novelupdates

When Zhou Yi woke up, he realized that he had become the prison guard of the Heaven Dungeon.Although he was fortunate enough to find a Fruit of Eternal Life, he did not possess any powers to protect himself.In a world of cultivation where demons and monsters roamed freely, Zhou Yi decided to hide himself and train for thousands of years.Time passed by quickly.The child he had freed 100 years ago had become the founder of the Great Qian Empire.The teenager he had helped 1000 years ago had become the elder of a celestial sect.The pet he had kept 10000 years ago had become the Absolute Demon King of Foreign Lands.This is the story of a normal person who has eternal life, the story of how he watched countless events unfold and eventually becomes the Supreme Celestial of Eternal Life.