Fighting to be Kind in a Cultivation World - Chapter 352: Trading Favors

Time flew by. Even though their graduation was a long time ago, after countless nights and passing through fleeting time, their story is still circulated around the quiet campus of University G. This story has many different versions, but there is one thing that everyone knows to be true. Back then, that ordinary girl betrayed the genius of the fine arts faculty and yet, his love for her still remained. For her, he nearly died in a fire. For her, he gave up his chance to study abroad. Years later when they meet again, he is successful with a new girlfriend in his arms and she is indifferent with a light and clear smile. However, unknown to anyone, her longing had begun long ago and even now flooded her thoughts…

- Description from Novelupdates

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 world has become a playground for the world of the heavens, and all living beings are digitized, waiting for the players in the world of the heavens to come to kill and torture countless times.

Yi Zheng, who turned into the first trash rabbit in Novice Village, chose to take a group of rabbits to start running, sit-ups, bench presses, rowing, swimming on the green grassland…

A year later, when the player came, what they saw was not a group of mobs, but a terrifying devil muscle rabbit!

The Rabbit King, who was sitting high, waved a carrot and said cruel words: “Starting today, don’t even think of leaving the Novice Village alone!”

- Description from novelbuddy