There's Something Wrong With These Demonic Women! - Chapter 12: White Tiger

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.

Heed my call! O’ Dragon of Eternal Sin, the Progressive Disaster, the Forerunner, the Land of Eternal Peace, the Flames of Soul Burning, He Who Owns The Deep Soul, the Sound of Origin, the First Cause of All Things, the Principle of Circles… o’ great Negary, your servant calls for your return!

Nikol didn't think that his life would end on that day.

He was invited by his elder sister to go on a cruise vacation. Since it was a request from her he couldn't reject it.

During this vacation, Nikol fell from the boat and died protecting his sister from an attacker, at least that's what he thought but he felt something pulling him from the ocean giving him a nostalgic and warm feeling.

When he opened his eyes there was a figure, that he could easily identify but at the same time, she was quite different from what he remembered.

“My son, Welcome back”

It was the last thing, he heard before he lost consciousness again.

When Nikol opened his eyes again, he was amazed to see a dense forest around him filled with greenery.

At that time, he didn't know that this land was called Femdom Island for a reason.

Come and Join Nikol to find his fate, in this unknown land.

Qing Qin dressed as the cannon fodder character with the same name in the book, is an unlucky man who was imprisoned for a major accident after inheriting the richest man’s family business.

Now, he is about to start the first round of investment competition.

The winner of the competition will inherit the richest man’s 100 billion family business and embark on the road of cannon fodder, while the loser gets 10 million, which was enough for him to enjoy himself.

Qing Qin: “Okay, 1 million loses 1 million, and 10 million loses 10 million. If I don’t lose the game, I will be a dog!”

Seven years later.

Qing Qin is worth 100 billion yuan and is listed on the Forbes Rich List.

The former richest man burst into tears: “I now understand why you refused to compete to be heir in the first place. Even without the protection of your parents, you can create a business empire alone!”

The protagonist confessed to the media: “With all the properties under Lou’s family as a gift. I hope you can agree to my pursuit.”

Qing Qin looked up at the sky and sighed. He could only write sadly in his autobiography: “Really, I didn’t think about making money at first…”

This book became a bestseller. Netizens are happy to play along–

“Actually, I don’t plan to make money.”

“It’s not that I make money, but that money put itself into my arms.”

“Damn money, go away!”

- Description from Novelupdates