Building a Gaming Empire From Scratch - Chapter 247 - 245: The Red Army

The dark BOSS, who had the fortune of becoming Earth’s last living human, brought with him his loyal, second last human to die, little brother to be reborn.

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 night of her engagement, Stella Norton, the adopted and unworthy second daughter of James Norton, is accused of infidelity and replaced by her own sister.Humiliated and heartbroken, Stella is cast out of the hall under her father’s orders while her mother looks on.In a daze of pain and betrayal, she wanders into a club, desperate to drown her sorrow—only to fall into the arms of a stranger ~Adrian Carter~ whose presence feels dangerously magnetic.By morning, she wakes to a shocking reality. Adrian holding out a marriage certificate. “Mate, we’re married,” he said.“What mate?”“What marriage?”“We were never school mates, how do you call me mate?” She shrieked.Adrian Carter, the cold and mysterious heir of the Carter Empire had a secret no one knows…he is the Alpha of the most powerful pack in Crown City.But fate doesn’t stop at secrets. As their worlds collide, Stella discovers that her own past is far from ordinary.Hidden truths, prophecies, bonds, and dark forces begin to rise—testing not only their love but their very fate.Will their marriage survive the storm of destiny?Can love survive when destiny itself demands blood and truth?Or will it consume them both?

When Xiao Fei was three years old, he was caught by a man with a sharp-nosed monkey and taught him to cultivate. The old man is Sun Wukong. In the past ten years, he has taught him the eyes of the fire, the copper and the iron bones, and the great product of the immortality… After the learning, Xiao Fei went down the mountain and accidentally entered a noble school. Pure school flowers, the best Lori, Miss Qianjin, beautiful maid… I like to sleep with him. Oh no, it’s a friend.

- Description from Biquge.com.cn (translated)