MTL - I, Dimension Breaker, Join the Chat Group - Chapter 729

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 was always accommodating her in every possible way before they started dating.After they started dating, she couldn’t help but ask: “Do you like me a lot?”His gaze was intense, and without hesitation, he said: “Mm, I like you a lot.”She was stunned, looking at him and was lost for a moment. It took her a while to react, and she casually asked again—“Uh... so before, did you and your girlfriends...”“I've never had a girlfriend,” he interrupted. “Su Wan, before meeting you, I never intended to fall in love.”...This is the story of a cool and elegant violinist making a high-profile declaration of love to a shy, beautiful man.Warm, quirky, sweet but not cloying.

An ordinary young man on earth, Xia Feng, traveled to a world of sword and magic, and took the body of Lucien Evans, another ordinary young man.