Hunter x Hunter: Transmigrated with Character Extraction System - Chapter 29: HHES -

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.

Space, System, Treasure, Spirit Tools … other protagonists all have golden fingers, Shi Qing: this young grandpa [Xiao Ye] is a golden finger.

It’s just that …he is now a golden finger and even more importantly bound to a host?

And so this host, has a backstory resulting a bloody darkened heart and soul, truly a psychopath!

A psychopath I can endure, but I also have to work together with the psychopath through different worlds, can I endure?

Ancient times, modern times, apocalypse, futuristic….

Traveling throughout the worlds, Shi Qing thinks the host isn’t as bad as he imagined? Strange.

- Description from Novelupdates

Jonathan Brandit was once on the path to becoming a professional basketball player, but a car accident changed his life forever, leaving him wheelchair-bound and filled with regret. Haunted by thoughts of what could have been, Jonathan spends his days shooting hoops in a gym. One day, he suffers a heart attack and wakes up in a completely different world, in the body of another person.To his astonishment, Jonathan realizes he's now living inside the world of a novel he once read, titled “Turning Point,” which revolves around basketball. He has become an “extra” player name Ethan Albarado—a benchwarmer—on the protagonist's team, Lucas Graves.With this unexpected second chance, Jonathan or Ethan Albarado is determined to achieve his dream of becoming a pro basketball player.But in this new world, will he rise to greatness, or will he face new challenges that threaten to bring him down again?

Even the most capable people cannot escape calamity. Zhang Ping, who dreamed of becoming the world’s best, voluntarily enters the palace to become a eunuch before his father has to resort to plundering and crime.

How can a prince be so thin and bony, that was Zhang Ping’s first impression of Huangfu Jie.

The prince looks at the kneeling eunuch, the scars and wounds on his body not yet healing.

Zhang Ping’s eyes turn red—I curse your ancestors for eighteen generations!

He is just little uglier; weirder than normal people.

Are ugly people not human? I, Zhang Ping, swear to cultivate the world’s second best over here in the palace!

- Description from Novelupdates