Supreme Dan Refiner of Realms - Chapter 1740 - : Divine Prison Alliances: Fortune and Friendship

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.

For decades, the brave warriors of the Northern Army fought to keep the world safe from the evil Silent Night. But when the fourth-generation leader, Jin Kwan-Ho is accused of colluding with the enemy, he is forced to disband the sect and commit suicide to protect his son, Jin Mu-Won. With no family and allies left, Mu-Won leads a dreary life under close surveillance… until a surprise attack from the Silent Night gives him a chance to escape to the mountains.

There, the young warrior trains to master the fighting techniques of his predecessors, before the mysterious disappearance of a loved one brings him back to the mainland. Follow Jin Mu-Won as he embarks on a journey to avenge his father’s death and take down the villains who threaten to plunge the world into darkness!

“You want to steal my genes then leave?” He grabbed her and tried to force her to hand over the child that was born three years ago.

She never had a baby? Then conceive one!

The delusional CEO’s desperate love. Her inability to resist as she fell deeper.

OK, the baby is born. She handed it to him and left!

Yet, he had her hog-tied and thrown onto the bed. Furiously boiling with anger he roared, “Woman! Who said I only wanted one?”

- Description from Novelupdates

In the ancient centuries of the yonder past, the heavens and the earth was rent, and in Long Ji Continent a tribe of dragons ruled supreme. But now, the dragons are extinct, and with a mysterious catastrophe descending, the fate of the world is at stake!

A teenager named Long Chen takes on the legacy of his father, chases after the mystery behind the sudden extinction of the dragons. In a lucky coincidence, he becomes the first ancient dragon warrior in an eon, with the responsibility to uphold the dragon tribe’s honor and the command of all dragons under heaven.

With the most passionate battles, heart-moving tender scenes, brutal slaughters, and filled with the majesty of dragons. On the advent of the catastrophe, millions upon millions of dragons descend upon the world again, bringing the world to the brink of an era of war.

For he of the ancient dragon tribe, is willing to paint the sky with blood, if only for the bonds of brotherhood; with a wave of the hand to reverse the flow of the galaxy, for a goddess worthy of praise; will pull the gods down from their celestial pedestal, sunder the heavens, for the good of all living things under the sky!

- Description from Novelupdates