Douluo Dalu: The Legend of Heavenly Ruler - Chapter 138: Big Sister? Maid?

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.

Three thousand years ago, gods and Buddhas disappeared all over the sky, and the inheritance of practice was broken. It was not until the ancient civilization was destroyed that spiritual energy recovered. Ten thousand races took advantage of this to invade.

Five hundred years later, the human race gradually rose up and began to fight for control of the land of China, and counterattacked all races.

Three hundred years later, Fang Yi, the Lord of the Great Dao, slaughtered all clans, destroyed all the heavens, stepped out of the myriad realms, and fought against the Dao of Heaven.

In desperation, Fang Yi sacrificed blood to eight hundred small worlds, reversed time and space, and was reborn nineteen years old.

In this life, he wants to live a more relaxed life, perfect his Dao Xin, and conquer the Dao of Heaven again.

- Description from novelbuddy

The once-bustling and noisy streets were now filled with an eerie blanket of silence.

Hoarse and frenzied whispers lingered high above the heavens, and an indescribable ancient giant lurked in the shadows of the bottomless ocean.

A mysterious plague had outbroken, and natural disasters wrought the Earth. Global pandemic and catastrophes had the panicked masses seeking illusory shelters from the devastation, day and night.

A bloody shower poured over the land as the streaks of lightning tore across the sky, illuminating the ill-intentioned gathering of ravens above. Nevermore, nevermore, quoth the ravens.

“We can see that this malformed creature has twelve pairs of ribs like humans, but also has a “transverse bone” that humans do not possess…”

In the medical school, Gu Jun continued bringing down his scalpel, illustrating the abnormal thoracic structure of the malformed cadaver on the dissection table to the surrounding students.

Ominous and treacherous times had descended! Truth and logic had crumbled, order warped into a frenzy. Humanity can only forge ahead through the power of intelligence and wisdom.

This stands at the forefront of strategy guides to Life (a shitty video game)!