The Geared Immortal - Chapter 791329 Heavenly Samsara:

Lin Luo was originally an ordinary college student. But once she crossed over, she came into the land of beasts, where the primitive forest is full of danger.

However, she met all kinds of beautiful men of different races to protect her, and got a lot of love.

Lin Luo: “Uh, different races can have children? Don’t be ridiculous. Interracial love is impossible to have results.”

A group of beautiful men: “As long as you’re willing, you can have results.”

- Description from Novelupdates

Ever since he was little, Xi Jia’s yin energy was strong, and every day he saw ghosts and ran into ghosts. One day, he accidentally broke the protection amulet. Celestial Master Ye Jingzhi happened to pass by and helped. Are ghost catching Celestial Masters all legit masters? WeChat official accounts, Taobao online shops, looking at gossip tabloids every day. Since then, Xi Jia has refreshed the lower limit again and again, and met a group of completely unreliable Celestial Masters. Binding spirits, doppelgängers, the Mausoleum of the First Qin Emperor, the ghost market of Poyang… The door to a new world is slowly opening.

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.

Richard Santamo, a Jobless, idling bystander, stumbles upon a mysterious blue panel that grants him access to advanced technology and skills beyond human comprehension. With the power to shape his destiny, he must navigate his newfound abilities while balancing everyday life, friendships, and his mother’s expectations. As he sets his sights on business, innovation, and self-improvement, Richard quickly realizes that knowledge and power come at a cost. Will he rise above his humble beginnings, or will the weight of his ambitions pull him under?-----------[ DISCLAIMER ] -----------Please note that the entirety of this book is a work of fiction. All characters, names, businesses, locations, and events depicted within these pages are products of the author's imagination or have been used in a purely fictitious manner. Any perceived resemblance to actual persons, living or deceased, or to real-world companies, organizations, or institutions, is entirely unintentional and purely coincidental. The portrayal of any names, character traits, positions, or corporate entities in this narrative is fundamentally fictional and is not intended to represent, comment upon, or interact with their real-life counterparts in any way. Our aim is to provide an immersive story, completely detached from reality.Furthermore, neither the author nor the publisher intends to defame, discredit, or infringe upon the rights or reputation of any individual, company, or entity that may, by sheer happenstance, share a name or a superficial characteristic with an element found in this book. This creation is offered solely for entertainment purposes and should not, under any circumstances, be interpreted as factual documentation or a representation of real-life events, actual people, or existing circumstances. Its sole purpose is to invite you into a world crafted from imagination, with no ties to the factual world.