Shadow Monarch in DC - Chapter 9: The Tower’s Call

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.

When a boy in a medieval fantasy world wakes up with the memories of his past life, he discovers a secret buried deep within his mind—a highly advanced AI companion. This AI, a relic of his previous existence, holds the knowledge of a futuristic world filled with technology, science, and innovation.Armed with this unprecedented advantage, the boy embarks on an extraordinary journey to transform his medieval surroundings into a thriving futuristic utopia. From reinventing agriculture to creating advanced cities, he introduces ideas far beyond the comprehension of his peers. But his vision isn't without challenges—power-hungry nobles, skeptical commoners, and ancient magical forces stand in his way.

After graduating from college and unsure of where to go, Zhou Wang accidentally activated the “Game of Life” system while playing a video game, turning his life into easy mode from then on.We can't return to the past, but we can always change the way we live.Growing through indulgence, advancing with a carefree spirit....Zhou Wang: “This time, I'll only be the winner.”

Yu Mian has been an orphan since she was a child. Fortunately, she has a kind person to support her, and the kind person is a starlet.
With gratitude, she became the little star’s first fan, sent him messages of encouragement, helped him make the rankings, and helped him tear up the sunspots for him, and accompanied him from obscurity to the top of the entertainment circle, and won the actor trophy.
Yu Mian thought that she would silently protect him for the rest of her life, but in a car accident, she transmigrated into Yu Mianmian, the fiancée of the movie emperor’s family.
On the first day of transmigrating, the film king appeared in front of her. Before Yu Mian could recover from the joy of seeing the idol, she saw a man with a cold face handing over a piece of paper.
The voice was low and indifferent: “We are just a family marriage, we just need to play around.”
Yu Mian Xingxingyan nodded, took the contract and smiled so much that she couldn’t see her teeth. Idols are for looking up to. As a qualified fan, being able to get close to her is enough to satisfy her.
Once dressed as a wealthy lady, Yu Mian, a commoner, just wants to eat and wait to die, and spend money and money on idols!
But why did the idol, who said he was good at acting on the occasion, look more and more wrong in her eyes?
One day, the film king blocked her in a corner: “When will our marriage be held?”
Yu Mian blinked suspiciously: “Didn’t you say you don’t want to get married too early?”
The film emperor gritted his teeth secretly: “I changed my mind, and suddenly wanted to try what it would be like to be called my husband.”
Lin Jianshen: I call my husband every day on the Internet, when will I actually call him once?
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【Daily Stream/Sweet Cookies/No Cruelty No Scum】
The author is not in the circle, please forgive me if there is any inaccuracy.

- Description from novelbuddy