Ghostly Masked Prince Xiao: Pampering and Spoiling the Little Adorable Consort - Chapter 260 – Recalling the past converted into half a sigh

Jiang He might have transmigrated to a world of Qi and martial arts, but the System that he got only provided him with… seeds.

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.

It is an era of artificial superintelligences, interstellar travel, gene medicine, and virtual reality worlds. Far into Earth’s future, 15-year-old Gu Ding is a student of Cerulean Military Academy by day, and tavern waiter by night. His ambition: Become the space pirate with the highest bounty offered by the Universal Federation Government. With the help of Neptune, a neonate super-intelligence, Gu Ding finds himself thrust into a galaxy of shadowy organizations, political underdealings, and otherworldly forces that lie beyond human comprehension…

When Linger was looking for a job, he applied for a bartender at a bar, but the guests who came here seemed strange.

What can a female warrior wearing very little, an armor that can’t even protect her eyesight, protect against?

How did the calamity mage who owed a hundred luck points survive until now?

Melancholic and lonely Skeletor, Skeleton? drink wine? Please don’t waste it!

The devil who likes the hero, since he is the devil, please do your job well, OK?

…

Well, he was getting used to these strange guests.

(Unknown Uncomfortable Sky: “Presenting Fine Wine for a Wonderful Different World”, “Sword and Magic and Beautiful Girls”, “Wine of Beautiful Girls”, “God-level Bartender of the Other World”, “I’m Really Not the God of Dionysus”)

- Description from novelbuddy