The Book of Abbadon - Chapter 19: The None

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.

[Female lead space + male lead rebirth]

Yin Miao just picked up an angry book from the ruins of the apocalypse, and accidentally entered the book and became an exiled unlucky person. It’s just that there are poor mountains, bad waters and hungry people everywhere, and they also drag a family who are used to the fine clothes, jade, food and grains.

Fortunately, the system sent an initial mission gift package-a space, but she just planned to develop the village into her own vegetable basket, meat plate, rice bag, and natural disasters and wars came.

Yin Miao cracked…

“Where A Miao goes, I will go.”

Seeing the bright woman who was packing things everywhere and preparing to take her family to escape, Xiao Xuan leaned against the tree and said with a smile.

Refugee Yin Miao hid the food stock that was about to explode at any time, and remembered that the plot mission had already deviate from the 108,000-mile mission, she sighed and asked, “Will you also go to the place where you lost your head?”

“Then I’ll go even more.”

A flicker of anger flashed in Xiao Xuan’s eyes, and this time, no one could move the slightest bit of what he wanted to protect.

- Description from novelbuddy

This is the story of a crazy lich who possesses an internal game system and brings catastrophe to the entire world.

Shao Xuan joins a friend in his expedition to a recently discovered archaeological cave. After he picks up an ordinary looking stone he is teleported to a different world and wakes up in the body of a small orphan child. The world he is in now is still in its stone age with primitive tools made of stone and the ways of the people are savage. Savage isn’t the only thing special about the people though, because they have superhuman strength, jump higher than trees and punch stones. In short, they are able to cultivate their bodies. Despite all this, it is a real struggle to survive because of the scarcity of food. Together with Caesar, his pet wolf, he tries to survive in this cruel world.