The Frozen Player Returns - Chapter 41. A Gift from Me to You

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.

Lambert, one of the great generals from Regios kingdom was suspected for planning a rebellion against his lord at the end of unification war, he died an unnatural death. Two hundreds years later, when the era has changed and Regios kingdom entered it’s peaceful era, he accidentally revived as a demon called Undead Knight.. Lambert whose entire body was wrapped in a flashy Demon Metal[Organ] set out on a journey to punish the wrongdoers while enjoying the peaceful sight of Regios kingdom. But…….. This peaceful era was basically an easy mode for Lambert, the greatest general of the chaotic era.

Pei Shiyi, who had been dead for hundreds of years, was suddenly resurrected. He was poor, homeless and was an unregistered resident. In order to settle down, Pei Shiyi took over a cat cafe.

The cat cafe was poorly managed and on the verge of closing down, there were only two to three real kittens.

Pei Shiyi fed the kittens and set a small goal for himself: for example, first, become the best cat cafe in this city. So a year later, a cat cafe called Xian Chan rose to prominence.

The Jin Hua cat that practiced Daoism for hundreds of years became a fat orange cat.

The Bi An came here and became a golden British shorthair.

The lively and active leopard cat was a real leopard.

It also came with a fluff-obsessed, non-human Director of Administration. After sniffing* the fat orange cat, the leopard cat and the ragdoll, he even began sniffing* Pei Shiyi.

The fluffy Pei Shiyi, who was a real phoenix: Do you want to die?

Director Bao: Sniffing cats is fun, sniffing you is addictive.

- Description from Novelupdates

The world froze.Literally froze. The chattering students, the falling cherry blossoms outside the window, even the dust motes in the air – all suspended in perfect stillness.“Oh wonderful hero,” a melodious voice echoed through the room. “Your world faces a terrible crisis, and you have been chosen to—”“No,” he said flatly.A pause. Then a shimmer of golden light coalesced into the form of a beautiful woman in flowing robes. She blinked at him. “I... what?”“I said no. I'm not interested in whatever quest or destiny you're selling. Pick someone else.”The goddess's perfect features creased in confusion. “But... but you've been chosen! The prophecy speaks of a warrior with a fierce spirit, one who—”“Lady, I don't care about your prophecy. I've got enough problems here without adding some fantasy world's issues to the mix. Now un-freeze time and leave me alone.”“You don't understand,” she pressed. “Our world is being ravaged by the Demon King's armies! Millions will die without—”