I Can Only Cultivate In A Game - Chapter 144: The Disciplinary Hall

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.

She conspires and provokes the most powerful young master in Beijing! They sign a contract and with his every call, she has to go anywhere and do anything his bidding. When their contract ends, she smirks and said, “I’ll take the money and you can leave. We don’t owe each other anything.”

He is Young Master Ya who rules Beijing. He controls the business empire during the day, and he is the strongest king at night. He is cold and women are merely playthings to him. With his power, the women he has eyes on have never been willing to leave him, yet she is an exception. She loves money, like all the previous women, but she is never shy of showing her greed. And he never realizes that he will ever grow a heart for such a promiscuous and cheap woman…

He points a gun straight at her heart. “Die with me, or accept my love—which one do you choose?” She pouts and turns around, before she pushes an adorable child into his arms. “Here, there’s your answer.”

A Deadly Secret, also translated as Requiem of Ling Sing and Secret of the Linked Cities, is a wuxia novel by Jin Yong (Louis Cha). It was first published in the magazine Southeast Asia Weekly (東南亞周刊) and the Hong Kong newspaper Ming Pao in 1963. Its original Chinese title was Su Xin Jian before Jin Yong changed it to Lian Cheng Jue. The story revolves around the adventures of the protagonist Di Yun, an ordinary young peasant, who is imprisoned after being framed. In his quest for vengeance, he accidentally acquires the Liancheng Swordplay manual (連城劍谱), an ancient artifact not only prized for the skills detailed inside, but also for containing a secret leading to a treasure.

In short, MC inadvertently created a world, but as the creator of the world, he did not know the world at all. He should have lived here like a fish in the sea with some plug-ins that MCs always have. But now he is even stumped by the bugs in the instant world. Luckily, in this world he has found his shadow guard, or his lover? So the daily adventure is getting not so boring…

- Description from Novelupdates