Star Rank Hunter - Chapter 367.2

The happiest thing in the world is to be able to amend what you have done wrong. She who acted willfully because of a game, was reincarnated into a time when she still had her parents’ love.

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.

The once most powerful ancient forbidden divine art, the Ancient Dragon Elephant Technique has been lost for millions upon millions of years.Countless years later, youth Lin Feng who was down on his luck, managed to obtain the number one ancient forbidden divine art, the Ancient Dragon Elephant Technique by chance.When Lin Feng departed from a tiny city of the northern-most area in the world, a legendary story would begin.This is a world with experts as many as the trees in a forest, a world where different races vyes for supremacy.Who shall rule over destiny in this boundlessly vast land?Depending on the Ancient Dragon Elephant Technique, Lin Feng battle the heavens and fought the earth, sweeping aside all experts with dominance, tyrannically ruling the myriad realms.

The first version: The life of Zach the Vampire in Barton City.

The second version: a vampire brought a bunch of nonhumans to live in Barton city.

The third version: strange creatures were secretly moving into Barton City.

Final version: The Barton explosion of nonhumans.