I Became the Devil Queen's Heart Demon - Chapter 9: Casanova, Watch the Fist!

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.

A golden parachute came my way when I was just an unknown actor. A massive one, big enough to cover all of South Korea.“Are you asking me to act as your boyfriend?”“If possible, even as a husband.”“Are you kidding me right now…”“I just transferred ten million won to your account. That should be enough to trust me, right?”“…Ma’am!”If I can just keep acting. I’d gladly sell even my soul.

While the blue light blossoms, the insignificant struggle at the bottom. He grasps the opportunity to change his fate and embarks on an unprecedented path…

Blast! The famous Lin family in Jinchuan went bankrupt.

Guazhong: Who is so capable?

Insider: The unworthy descendant Lin Wanli!

——

Brilliant! Jinchuan Yanluo and Huo Yaoxiao are married!

Guazhong: Who is the bride?

Insider: Domineering and arrogant Lin Wanli!

——

Shock! The identity of the person in charge of Taixi Biology was revealed.

Guazhong: Who is the president?

Insider: Or Lin Wan… Li?

That waste waste snack? ?

——

In her previous life, Lin Wanli was tricked by her girlfriends, framed by her scumbag father, and rejected by her grandmother. She couldn’t even protect her eight-month-old daughter, and was abandoned in the trash can by the nanny.

Resurrecting her life, Lin Wanli desperately seized the bargaining chip for revenge, and also grabbed the man who helped her avenge her. It’s just… She always thought that man was also reborn, until he could see through her heart without any scruples.

Lin Wanli: “Mr. Huo, it’s a bit impolite for you to be reborn with skills!”

A certain master: “When did I say that I was born again?”

Lin Wanli: “Is that my misunderstanding?”

A certain master: “No misunderstanding, I have some skills. For example, I heard someone say in my heart last night that the bed is really a bit small?”

- Description from novelbuddy