Martial King's Retired Life - Chapter 109Book 15:

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 most popular game worldwide is Ancient Arena Online, a high-octane PvP fantasy game where teams fight for supremacy in mythical arenas. Millions of fans watch livestreams, bet on matches, and follow their favorite players like celebrities. The game’s competitive scene is so fierce that professional teams are treated like esports royalty.At the heart of it all is Kai Ashford, one of the top players and captain of the pro team Phoenix Edge. With lightning-fast reflexes and strategic brilliance, Kai leads his team to countless victories. But success breeds jealousy. Sabotaged by a teammate he thought was loyal, Kai is not only kicked off his team, but also humiliated in front of millions of fans. With his reputation shattered and confidence at rock bottom, Kai retreats from the public eye.However, Kai's competitive spirit is not easily extinguished. He stumbles upon a group of amateur players—a ragtag bunch who show raw potential but lack the finesse needed to win at the highest levels. Their quirky personalities clash with his no-nonsense attitude, but something about their passion reminds him of why he started gaming in the first place. Deciding to put his past behind him, Kai agrees to train them into a professional team.Along the way, Kai builds unexpected connections with his new teammates, including romantic entanglements with a fiery mage, an eccentric hacker, and a mysterious assassin player, all while juggling his personal feelings and growing attraction for multiple women. As his new team rises through the ranks, they gain attention from fans and sponsors, putting them back on the radar of the professional scene.But Kai’s past doesn’t stay buried for long. His former teammates—now rivals—plot to sabotage him once again, while jealous contenders within the gaming world aim to tear him down. However, Kai's return to the spotlight will be on his terms this time. With a darker, more calculating approach, he plans to not only dominate the game but also to get sweet revenge on those who betrayed him.

I'll take care of it. The uncle of her husband on their wedding night whispered viciously in her ear. In front of a frightening Steel Blooded Business Demon, he was the one who was crazy for favoring his wife.

He had begged her to pave the way for her so that she could do whatever she wanted. If not, he would pamper her to the heavens. Just because he glanced at the clothes, he directly monopolized the entire shopping mall under her name. He said, As long as you want it, I want it!

The real daughter of the Lin family, Lin Luqiu, was lost for many years and was found suddenly, only to be asked by her parents to replace her fake daughter sister in marrying a living corpse!She uses her exceptional medical skills to wake her vegetative husband, but to her surprise, the first thing he says upon waking is, “Let's get a divorce.”She laughs in anger, “Fu Jingchen, you really are an ungrateful dog of a man.”After the divorce, everyone learns that the seemingly rustic girl is actually wearing many hats as the true powerhouse.She is actually the prized disciple of a giant in the medical field, a world-class piano master, and a genius jewelry designer... all of these are her.Later, a regretful President Fu comes to ask her to remarry.She dominantly refuses, “President Fu, sorry, no time!”The man pulls her into his arms frantically, “As long as you come back, I will give you my life!”