My Space-Time System - Chapter 592 Return of the genius commoner.

Struck down amid the battle, the Hero and Demon King meet their demise. As their souls linger on the edge of the afterlife, a mysterious force intervenes, merging their fragmented souls together with a new being. Rusty, the living armor, now affected by their memories and presence, embarks on his own quest. Will he seek revenge on those who betrayed the hero, or will he fulfill the desires of the fallen demon king? or instead, forge his own path?

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.

In the world of demons and demons, a hundred ghosts travel at night.Qin Feng, who accidentally crossed over, came to this troubled world with no lofty ambitions.He only wanted to protect himself and enjoy the rest of his life safely.But the sky does not fulfill people’s wishes, excellent men are so outstanding everywhere.The ancestor made a marriage contract, and the talented young lady of the Liu family became a wife.

Nobody knew at the beginning of “Heaven” that the game itself would be awakened and gain complete self awareness to forid paying for game credits. After 10 years of development, Heaven's game credit has become the only currency interchangeable between reality and virtual reality. Inside the room, a player raises a pistol and points it at his very own head. Previously, he led a comfortable life as the son of a rich couple. But now, he was in a state of misery and destitution because of Heaven. He travels 10 years back in time and returns to the point in time when Heaven was to begin in a week's time. Being reborn, what was Chu You going to decide this time... P. S. The storyline is toxic and the protagonist is hardly sane. He is consumed by vengeance and acts wantonly. For entertainment solely. Read at your own risk.