The Cursed Prince's Strange Bride - Chapter 263 "Don’t Leave Me,"

The weak cry out with all their might, yet no one cares; The strong whisper softly, yet their words penetrate deeply into the heart. A Talent Tree ablaze with flames, every leaf bearing different spirit runes, Lu Ye, reduced to a mining slave after his sect was destroyed, used this to become a cultivator and stirred the winds of change in the Nine Provinces...

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.

He just became the newly-crowned movie emperor when he died a tragic (actually, very stupid) death. On his way to cross the NaiHe bridge, he managed to evade Meng Po and not drink her soup. Thus keeping the memories of the life that he just had.

But he would never have imagined that he would be reincarnated hundreds of thousands of years later. In the Interstellar era! If it happened to other guys, they would definitely want to be a mecha warrior. Don’t most men dream of that at least once in their life? But sadly, that’s not for him.

There’s only one goal in his mind – to be the number one star in the Interstellar era.

With the knowledge and skills he got from his past life, he would definitely achieve it.

But who was this annoying person who kept on pestering him?

A certain prince smiled in a scary and crazy way: Cook food for me or else die.

= a few months later =

A certain prince leaned over and moved his face closer: I don’t need food, I could just eat you.

A bad tempered yandere gong X a reincarnated movie emperor shou

*NaiHe bridge – a bridge that souls crossed to enter reincarnation

**Meng Po – the lady on the Naihe bridge who gives out soup that lets the souls forget their memories, thus entering the cycle of reincarnation in a clean slate.