MTL - Don’t Learn Mandarin Ducks - Chapter 44 Turn your elbows out

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.

He just wanted a quiet vacation and a good espresso... instead, he ended up seducing half the city.------Lux Vaelthorn wanted three things: a good coffee, peace and quiet, and zero responsibilities.What he got?A mansion, a system with the personality of a deadpan butler, and a bunch of heiresses fighting over who gets to be his first “investment.”As the heir of Greed and Lust, Lux was born to dominate markets, hearts, and boardrooms. But after centuries of cleaning up his parents’ messes in the underworld, he rage-quit Hell’s finance department and took a hundred-year vacation to the mortal realm.His problem?Even without trying, he’s too hot, too rich, and too damn magnetic.His Incubus Pheromones seduce emotionally unstable rich girls like clockwork.His Greed System scans bank accounts like X-rays.And thanks to a “minor” celestial bounty on his soul, some entities either want to marry him… or murder him.[Warning: 3 rich virgins detected within 15 meters. Incubus Pheromones activated.][Recommendation: Flee. Or flirt. Your call.]Lux just wanted caffeine.Now he’s got a mansion full of horny heiresses, a schedule full of power plays, and a city that thinks he’s a billionaire playboy CEO.Fine.If he can’t nap… he might as well rule.

Sa Bina was on her way to write her SAT when she suddenly finds herself in a strange world. She is sent to be the old emperor’s concubine, but on their wedding night, the emperor gets murdered by no one other than his own son and the heir! To survive, Bina makes a deal with beautiful but deadly Lucretius and her life in this dangerous kingdom begins.

“I wasn’t born a lucky person, I’m just too strong.”

On his way home late in the evening, Xiao Li found a letter asking for help and inexplicably came to an unknown place. He had to finish the task given before he could succeed in returning to reality. In the legendary haunted school, Xiao Li looked at his companions’ task of ‘survive until dawn’ and then looked at the tasks displayed in his book:

Tell me your name.

Tell me what you like.

Kiss me.

Xiao Li: ????

He was very confused and then refused.

- Description from Novelupdates