Mesmerizing Ghost Doctor - Chapter 4703: Going Down to Sea

A Federation Colonel with abnormal thoughts was locked in a dark room and met a little looney.

“Your whole body emits a scent that I dread (covet) and fear (desire).”

A frigid Colonel X little looney roommate: A sweet story of interstellar travel

- Description from Novelupdates

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.

A certain girl aspiring to be an adventurer was invited to join the Hero’s Party by chance and became their apprentice. However, she was not actually treated as a real apprentice, and was subjected to physical violence and verbal ab*se every day.In the end, she was told that she had no talent and was about to be expelled from the party.However, the hero promised the girl that if she could stay in the Demon Forest for a week, her expulsion would be revoked. Unaware of the fact that she had been tricked, the girl was abandoned in the forest without even a weapon to defend herself.But the Hero’s Party had no idea that the girl had been observing every battle they had faced. Nobody knew of the girl’s talent.A talent, for which even the word “genius” would be too modest to describe, would allow her to reach the realm of excellence.The girl who was able to escape the forest soon registered herself as an adventurer, and in no time, she overtook the fierce fighters one after another.This was a tale of the rapid growth of a girl with the strongest physical prowess.A talented monster doesn’t need to be taught – someone once stated.

She is the wife completely ignored by him, yet also the woman he most cherishes. Ultimately, she forces her husband to divorce her by taking on the identity of a lover!She steals vital information and, carrying this man's premium seed, successfully makes her getaway!Six years later, father and son have their first online confrontation. The little bean successfully infiltrates the man's system and sighs at her, “Mom, this person is so dumb. Is he really my dad?”Mu Yiliang pats her son's head and says reassuringly, “He was so terribly fooled by me back then, which shows his IQ is very low. Luckily, you inherited mine!”Unbeknownst to them, the man on the other end of the computer has already listened to the conversation between mother and son. He sneers coldly, “Very low IQ? Mu Yiliang, let's see where you're going to run this time!”