Mr Gu's First Doting Marriage - Chapter 897 - 898 The Little Girl with Eyes Like

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.

This world became a playground for various other worlds. Every living creature was digitized and awaited the endless slaughter and torture of the players from other worlds.Yi Zheng, who had become a mob rabbit in the Beginner's Village, decided to lead a group of rabbits. They sprinted across the grasslands, did crunches, bench-presses, rowing, and swimming etc.A year later, when the players descended, they saw more than just a group of small monsters.They saw an army of terrifying, demonic, muscular rabbits!The Rabbit King sitting on the throne high above waved a carrot as he threatened, “From this day forth, don’t even think of leaving Beginner's Village!”

Struck down amid the battle, the Hero and Demon King meet their demise. As their souls linger on the edge of the afterlife, a mysterious force intervenes, merging their fragmented souls together with a new being. Rusty, the living armor, now affected by their memories and presence, embarks on his own quest. Will he seek revenge on those who betrayed the hero, or will he fulfill the desires of the fallen demon king? or instead, forge his own path?

Chen Chao dreamt of becoming a powerful immortal cultivator, flying on his sword and vanquishing enemies with daoist magic. His hopes were dashed when he discovered that he had absolutely no talent for immortal cultivation.

Refusing to submit to his fate, Chen Chao joined the ranks of countless other talentless martial artists and embarked on the path of martial cultivation, a path scorned by the immortal cultivators.

In this era of strife where martial cultivators, immortal cultivators, and demonic cultivators wrestled for hegemony, Chen Chao will either rise to the top or fall into eternal damnation.