Becoming the Empress: Golden Finger Set Under My Bed - Chapter 112: Hundred Tastes Cake

Empire of the Ring is a Korean modern fantasy epic adventure novel that sets in the nations of the Caucasus mountain range which separates Europe and Asia. The nations of Caucasus are regions of many conflicts over territories, ethnicities, and religions. The story begins as Lee Youngho, a warm-hearted Korean merchandiser, takes a business trip to a disputed territory of the Caucasus nations to sell Korean unmanned security systems only to get misconstrued as a spy and caught by Armenian militia. Youngho eventually gets involved with the militia and CIA to help out people of the regions from conflicts and works toward a birth of a new empire in Caucasus.

Transported to a female-dominated world and endowed with a submissive “shou” physique, he faces the threat of being hacked to death with a cleaver due to his “green tea” behavior.“I must change my fate!” Su Yan raised his hand and swore.However…“Little Junior Brother, I’ve noticed you’ve been getting prettier lately. Let your Senior Sister study you a bit.”“Why are you distancing yourself from me? Is it because you’ve taken a liking to some other woman?”“I’m going to lock you up at home, so you’ll belong to me forever.”

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.

Traveling through time, he became Zhang Gui, a foreign relative of the Tianqi Dynasty. Because he didn’t want to be tortured to death by Li Zicheng in the future, he had to embark on the road of harming the powerful and bureaucratic officials of the Ming Dynasty.

The Yanguan scolded him for coercing the king and making disorderly manners.

The prince scolded him for being greedy.

The official hates him for being mean and cruel.

But helplessly, most of the Nine Frontiers are his lackeys, and even Jiu Qiansui is his godson, and the emperor can’t do anything about him.

Therefore, the Ming Dynasty was at the mercy of him.

- Description from novelbuddy