MTL - It’s Not Easy Being a Master - Chapter 48 Rust lock

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 crossing over into the game world he had played before, Su Nan finds himself as a nobleman who has lost his title. At this time, the continent is still a barren wasteland of elements; powerful wizards abandoned this world a thousand years ago to explore the multiverse, becoming little more than elusive legends.Only Su Nan knows that, a thousand years later, the elements will revive, the wizards will return, and the continent is about to enter a prosperous era of magic.So, his task is quite simple: work hard to cultivate and become a wizard, surviving until the age of wizards arrives!“Resource-poor?”“There’s nothing for it; I’ll just have to synthesize everything myself.”Su Nan opens the synthesis cube. This is the story of a traveler with a player panel and a synthesis cube, leveraging a slight advantage of foresight to make a name for himself in a foreign world.

I made a game.

Roan crossed over and became an FBI agent.

Several years later, when interviewing the world-renowned detective Roan Greenwood, the reporter asked:

“Excuse me, what made you persevere on the road of solving the case?”

Roan tilted his head and glanced at the sports car beside him, the villa behind him, and the beauties in the villa, and smiled slightly:

“Of course it’s the bonus after solving the case.”

“???”

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