Heaven Extinction Martial Emperor - Chapter 39: Severe Punishment

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 course of commitments never did run smooth.

Humanity's end came without warning when a crimson fog swallowed the sky. Zhao, an ordinary man, watched in horror as a celestial voice declared their fate: their Planet had reached its limit, and its people would now atone for their sins. An otherworldly force crushed resistance, and in an instant, every human was teleported to the Central Land, a vast and hostile realm.The voice from the heavens promised trials that would shatter their wills, but also power beyond imagination for the fortunate. Only those blessed by luck would awaken unique Lord Talents, granting them the means to survive and dominate:In a world where strength lies supreme Zhao will do whatever it takes to get stronger.Zhao awoke in an isolated area near a forest. As despair set in, a voice echoed in his mind:Ding… Million Times Multiplier System has been activated.Just as the rest of the players had known of the world Zhou's subjects were clearing out every resource.When others were building their base he had built a kingdom.And by the time they knew of his threat, HE HAD ALRDY BECOME GOD!

[Dimensional Magic Cube's Instructions][1. The Dimensional Magic Cube can automatically absorb the energy that exists in the dimension. Once a month, it can randomly open a dimensional channel and perform dimensional travel.][2. The Dimensional Magic Cube has the ability to convert various powers from different dimensions, ready to be activated and used at any time.][3. There is a storage space inside the Dimensional Magic Cube, which can be opened and used at any time.][4. ...]This is the story of a man who once couldn't choose his own future but vowed to live for himself in this new life.Carrying the Dimensional Magic Cube, Riezel arrived in the world of swords and magic and wandered through different worlds, hoping to find a new beginning.===In a nutshell, a story about a man from Earth who got transmigrated into a fantasy world (original world that act as the main world) and has the ability to travel to various anime worlds to become stronger.Visited Worlds:1. Danmachi (Is It Wrong to Try to Pick Up Girls in a Dungeon?)2. Demon Slayer (Kimetsu no Yaiba)3. ...