The Good for Nothing Seventh Young Lady - Chapter 8

Xiang Nuan starts to play this game because of a certain famous gamer. Later, however, she finds out that the game is much more interesting than the man…

- Description from Novelupdates

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.

After crossing, I discovered that there is a resurgence in the East and there is a dawn in the West.

The steam cannon and the mysterious collision, the Western extraordinary gradually awakened.

[Blasting Master] + [Steam Expert] = [Machinist]
[Soul Master] + [Swordsman] = [Curse Swordsman]

A variety of advanced, transfer and hidden professions, as well as never-ending exploration.

As the mystery of the West gradually unfolded, the ancient gods gradually recovered, and a world full of freshness began to kick off in front of Sulu.

The old god is recovering, the new god is rising, what should ordinary people do? Fortunately, there is a property panel!

- Description from uukanshu (translated)

After the battle, the beautiful senior sister shyly raised her face in front of you and slowly closed her eyes. At this time, you…

Eh? The choice this time was too simple. Of course, it was four.