My Vampire System (WN) - Chapter 1461: A Strange Day

Frost is a healer and must use her wits, modern knowledge of medicine and challenge her moral compass in order to survive this world of Eldritch entities born from emotions, folklore, fairy tales, concepts and despair. She was no more than an ordinary man who fell into an unordinary circumstance. Suddenly appearing in a place called the Nexus in a different world from Earth had left him... er... HER curious about what this newfound world is all about. A world of swords, kingdoms and dungeons? Yep. Of races that were thought to be found only in fiction? Oh yeah. Of technologies that far surpass anything seen on Earth? Huh? isn’t that a bit much? At least they’re limited. And of magic that blatantly violates the laws of physics!? Yeah... physics don’t apply here. But her curiosity ended up costing her before she had learned much of the world of Elysia, and she was betrayed by a person she was led to believe she could trust the most. Come join Frost as she tackles Eldritch entities in a strange world far from home. However, this world may be a lot more closer to home than she realizes. *** < Judgement in Progress > The ‘Blessing of the Nexus’, which she had come to call the ‘System’, displayed these words before her wilting eyes. “Judge… ment... I… I came from… Earth… Transported here… turned into… a girl… and now… I’m being… Judged…? < Decision of One Thousand Juries Pending > < Awaiting Verdict > “… If… my only… wrong… is living… then I’d rather… be wrong… to the very end!” When the black forest fused with the darkness behind her eyelids – – A message appeared.

Violence, Rogue, two names that had long since faded away from the limelight. In a new game, The Strange World, they appear once again. The two former legends, once more rise to glory.

- Description from Novelupdates

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.

On the Great Land of China, forces clashed for the sake of supremacy and Bloodline Warriors ran amok; the conflict of the strong threatened to shatter heaven and earth. A young man named Lu Li—nothing more than a humble Coffin Carrier from the Northern Desert—came along with Lu Ling, his sister. The two were regarded as puny insects and bullied, but little did people know that Lu Li had the strongest Bloodline of them all in him.