The Surrogate Bride of the Colonel He - Chapter 54

You thought being reincarnated as an extra-side character was bad? Imagine being thrown into the body of a villain who is disowned by his own family and discarded by the author.

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.

After being fired, Lu Qingjiu finally decided to return to his hometown to farm.

At first, he started raising a pig, and then he found that the pig could solve more high-level math questions than he could.

After that, he started raising a flock of chickens, and then he found that his own fighting ability was one-tenth of that of a single chicken.

Finally, Lu Qingjiu finally realised that this old home wasn’t quite right… Especially a certain person by his side who constantly stared at him day in and day out.

Lu Qingjiu: “Are you drooling because of the spicy stir-fry I’m holding or because of me?”

Bai Yuehu pointed at the stir-fry.

Lu Qingjiu: “Then can you let go??”

Bai Yuehu reluctantly glanced at Lu Qingjiu’s arm, before loosening his teeth.

- Description from Novelupdates

“Push her! You can’t let her get back up!”

“That’s right! You have to straighten out that heinous b*tch!”

A goddess of war whose fearsome reputation enveloped East Asia was betrayed and killed. Then, she was reborn as Caroline Lambert, a vulnerable lady with a tarnished reputation in New York City! Despite being the daughter of an important family, her family heavily favored her stepsister, so the bullying and physical abuse were frequent. Her fiancé, who used to woo her fervently, stood before the public with her stepsister in his arms as he declared their engagement annulled, making her a joke amongst the rich and important.

Her stepsister was also cunning enough to steal her position and take away all the affection that should have been hers, and smeared her name to the point that she was condemned by everyone! And yet, when the goddess of war reincarnated as Caroline, everything became different!

Withstanding the malicious slander, she carved out a new, bloody path. Insults from her family? Attempting to steal her late mother’s estate?

Caroline issued papers announcing that they had cut all ties, and that her mother’s estate would be donated to charity! See here, she would rather donate every coin to charity than keep them for you!

They were saying that she was a piece of trash who had nothing going for her? Sorry, but she was a prodigious doctor, a mercenary, a racer, and a top hacker…

Though Caroline wanted revenge for the body’s original owner, she inadvertently picked up a sickly, beautiful man. Seeing that he did not have long to live, Caroline agreed to his proposal… Only to find that like her, he was a man with multiple identities that could leave New York shaking once revealed!

Caroline: Aren’t you supposed to die an early death? Liar!

Edwin: It’s not a lie. My wife clearly pities me!