The Yu Brother's Case Book - Volume 1 Chapter 4.2

Why is the book Evolution Chart related to the theory of evolution?What is the relationship between the Ethereal Cloud Sword and the probability density?How did cultivators build atomic bombs?How did quantum mechanics appear in a cultivation world? Why were the ancient supreme experts and the modern ring grandpa labeled as being misguided and useless?What is the connection between Quantum Grandmaster, Daoist Proscribe, and Supreme Lord with the great scientists Bohr, Heisenberg, and Einstein?Let us follow the host, no, the protagonist Wang Qi, entering a world like never before and explore the secrets of scientific cultivation.

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.

Struck down amid the battle, the Hero and Demon King meet their demise. As their souls linger on the edge of the afterlife, a mysterious force intervenes, merging their fragmented souls together with a new being. Rusty, the living armor, now affected by their memories and presence, embarks on his own quest. Will he seek revenge on those who betrayed the hero, or will he fulfill the desires of the fallen demon king? or instead, forge his own path?

Upon entering the world of Genshin Impact, Lucas unexpectedly activates the “Villain Simulator,” forcing him to take on the role of a major antagonist in a simulated reality. His missions include:Bullying Keqing at schoolBlackmailing Shenhe into carrying out various tasksRaising an army of undead to destroy MondstadtAnd much more...To balance the evil acts committed in the simulation, Lucas must earn good karma by acting virtuously in the real world. However, he never imagined that one day, Shenhe, wielding a spear, would confront him in reality:“Lucas, you have committed countless evil deeds. Today, I will kill you to uphold justice!”Lucas: “...Wait, weren’t those just fake simulations?”