Very Pure and Ambiguous: The Prequel - VPAATP - V4C19 – Bought From A Stall

Yun Bixue is in dire straits—

A generation’s War God, once overlooking the world with disdain, had fallen into disgrace because of a conspiracy, becoming a mere son-in-law. However, what nobody had expected was that it was all part of his grand scheme, and when the winds of change blew, he, the king, returned, with the power to overturn seas and move mountains, as a dragon ascended to the heavens!

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.

As soon as Li Ye opened his eyes, he saw two three-meter-tall giants fighting each other.

“What sin did I do, I’m going to die just after transmigrating!!”

“Ding, feel that the host is in danger, activate the system, and reward the novice with a big gift package – 12 spell powers”

Since then, Marvel has added a superman who can fly, whose eyes can emit lasers, and who can…

“Hulk, from now on, I will be the strongest on Earth!”

“Thor, I lifted your hammer!”

“Ultra, it’s time to go back to the furnace and rebuild!”

“Hella, just because I beat you, doesn’t mean I want to marry you!”

“Purple Sweet Potato Essence, don’t run away! Don’t you snap your fingers?”

“Gwen, Wanda…we are all family”

- Description from novelbuddy