Jobless Reincarnation - Mushoku Tensei - Chapter 220: Bad Omens

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 is the genuine diamond bachelor of G City, ranking first in terms of net worth,Everyone knows that he had a deep and unforgettable love,But no one knows that, five years ago, he had a nominal marriage;She is the super nurse of G City People Hospital, with neither wealth nor high education,Everyone knows that she is divorced and has a child in tow,But no one knows that her ex-husband, the father of her child, is the man at the very top of the pyramid.Scene One:On the day she was diagnosed to be pregnant, her husband registered on the marriage certificate came back.The next day, at the breakfast table, an A4 sheet of paper appeared very abruptly by his right hand.“This is a divorce agreement, please sign it.” She said, her internal organs trembling.“...Is there someone else?” He put down his chopsticks, looked at her, and asked calmly, his eyebrows almost imperceptibly twitching.He came back because there was something he wanted to talk to her, but now it seemed unnecessary.“...Yes.” Having a child should count as having someone else, because from now on, she would love her child.When they got married back then, he had said that if she had a lover, she could ask him for a divorce.“Alright, I understand.” He nodded, picked up the agreement on the table, and left.“...”Scene Two:“What's your name?”“Axel Hawkins.”“Your last name is Hawkins?” The mother's name is Carolline Ruiz, his ex-wife, and the father's column is left blank, isn't it?“Yes, my dad's name is Bryan Hawkins, he's a Sky Walker.”“...”At five in the afternoon, Carolline Ruiz picked up her son from school and saw him standing next to her son; she instinctively turned around and ran.Bryan Hawkins left Axel Hawkins in the Guard Room, warned him not to run around, and then chased after her with his long legs.“Carolline Ruiz, stop.”“..” Almost instinctively, she really stopped.He slowly walked over and stood in front of her, a tall and imposing figure blocking all the setting sun.Carolline Ruiz couldn't help but look up, the afterglow of the setting sun illuminating his face, she couldn't see his features clearly at all.“What are you running for? If you dare to secretly love for eight years, do you dare to openly love for a lifetime?”“...”

Trying to earn a living everyday kept Hyun-Soo busy. However, one day when he was doing a side job of threading beads, he realized something.

-Ding!

Qi Condensation. Foundation Establishment. Core Formation. In the current world, only these three realms are known to be achievable. Nascent Soul is but a legend and the realms above it lost to the the long river of time. The modern era is known as Cultivation Civilization, a balance of power and civility, excess and moderation. While cultivation remains a secret practice, it has long since exposed itself to the mundane world, quietly intertwined with each facet of society. While the world appears to be at peace, what lies underneath is a conflict between human, cultivator, and demon, brewing for ages and waiting to implode. Yet in the wake of humanity’s rapid industrialization, qi—and consequently cultivation—is dying.