This Taoist Master is too Frivolous - Chapter 355 - 244: Are You That Little White Rabbit?

Reincarnated as a fox by mistake, Tang Li Xue got a system that can help her evolve and reach Deity hood as her compensation.

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.

Lorelai is an unwanted princess; a puppet in the hands of the royal family.Born weak and raised loyal only to her kingdom, she has no real power and is constantly abused by both her stepmother and her son.Her value lies in one thing only––marriage. Thus, she is to marry Duke Kalder, an old but powerful and influential man whose previous wives have all gone missing under mysterious circumstances.That is until she meets him.Tall, dark, strong, mysterious, irresistible, seductive.The King of Lycans. The King of Beasts. The Gypsy King.One who was once a slave now controls the biggest and strongest, most feared kingdom of the continent. And for some reason, he has his eyes set only on Lorelai.Important note: this is a historical fantasy novel and in its context, the word “Gypsy” is only used as a name of a nomad tribe and is not used as a slur.

“Stop following me!” Asher yelled, his patience running thin. He had let it slide for too long because she had done a lot for him. But now she was everywhere, suffocating him.“I’m only trying to protect you,” she responded.Asher sighed, running a hand through his hair. “I need some space, alright? I can take care of myself.”She didn’t budge, and just kept staring at him with that same obsessive look, like she had no intention of leaving.“Is it because you’re strong now? Are you going to leave me because I'm no use to you anymore?” Her voice had turned cold, sharp enough to cut through the silence.“Of course not, you know that’s not the reason…”“Then why do you want me to stop following you?”“I’m just going to the restroom, for God’s sake!” He massaged his temple, clearly at his wit’s end.“Oh, you should have said that earlier.” She giggled, the earlier tension melting away.“I did,” he sighed in defeat.