Destroying My Own World - Chapter 358 Self-sacrifice.

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 a mortal accident left him dead, the soul of Wang Wei was sent into the sacred body of an unborn child in an ancient world of cultivation where only the strongest survives.

Along with the ancient soul of an immortal taoist, follow Wang Wei from a small clan as he strives to carve a name for his clan and himself.

Lu Zhiguang is not a cannon fodder himself, but his mission is to save the miserable cannon fodder.