I Alone Level-Up - Chapter 208

“First, a hidden marriage.”“Second, the marriage period is one year.”“Third, you are not allowed to have any feelings for me!”These were his three stipulations to her at the entrance of the Civil Affairs Bureau.She readily agreed and adhered to them one by one.But a year later, is the man holding onto her tightly and refusing to let go still the same cold person from a year ago?“Could you let go, please? Our one-year term is up.”“Wife, the contract you signed is indefinite!”

A scientific genius named Thomas Harrier was transmigrated to an imperial prince body after a car accident that took his life. He found out that he is in a world similar to our own with a timeline akin to early twentieth century. The body that he is occupying was the imperial prince of a failing empire who suddenly rose to power after a successful assassination attempt of his father. Unaware that the attack is just the beginning of what is to come. He faces many challenges throughout. Will Thomas Harrier be able to live his second life in peace while running an empire and getting it back to its former glory? Or will he succumb into a conspiracy lurking within the country's borders?

Expect some:

Cold war era techs.

Super battleship with advanced electronics, propulsion, and fire control systems?
Helicopters?
Missiles?
Modern medicines and equipment?
AC-130?
A nuke?
Challenger or Abrams or Leopard?
F-4 Phantom or MIG-21?
Colored TV's.

Everything!!!

PS. Cover not mine, I just found it on google.

Genius, antisocial, solitary, intractable , maniacal.

At the turn of every era, it is he who raises the flag of the rebel cross.

Winners take it all, losers take the fall.

He who brings order to a chaotic world, assembles talents and masterminds.

He who hides among the crowd, yet stands on the top of the world.

— The one and only, him.

- Description from Novelupdates

Chen Luo’s transmigration story starts at a mourning hall.

This is a world where reading can help you obtain enormous powers.

Reading Confucian classics trains you to the path of righteousness

Studying Taoist doctrines will help you grasp the source of everything and the ultimate principle underlying reality.

Understanding Buddhist Scriptures will make you comprehend the essence of rebirth and karma.

But contrary to what is expected, why does Chen Luo’s cheat only give him books for leisure reading!

….

What? 《Strange Tales from A Chinese Studio》is now being treated as the bible of the Monster Country?

What? 《The Demi-Gods and Semi-Devils》opened the world of martial arts?

What? 《The Plum in the Golden Vase》….

Don’t panic, don’t panic, these are all small details!

This scholar, have you ever heard of the book 《Tales of the Three Kingdom》 where gallant generals and cunning strategists are a dime a dozen?

That Taoist priest over there, ever read 《Investiture of the Gods》? You people from the Taoist sect are outdated!

Hey, please halt high priest, I have a copy of 《Journey to the West》 here, are you interested?

- Description from Novelupdates