Bestow Whole Favour on My Lovely Wife - Chapter 295 - You Fake Patient

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.

The MC entered the body of the An family eldest son, An Ziran, an arrogant 16 years old boy who weighed 78 kg (~171-172 lbs), who only knew how to eat, play and sleep. Seeing his current body, An Ziran decided his first priority was to LOSE WEIGHT!

I, Fang Cheng, an Immortal.Although I had developed many hit games, there was one question I never quite figured out.Games, why are you fun?

The crumbling Vienna System is unable to stop the rise of the Second Empire, as the Emperor's nephew is about to visit his faithful Paris.Protector of the Apennine, Honorary Chairman of the Rhine Federation, Close Ally of the Kingdom of Spain, French Empire Augustus Jerome Bonaparte:I will make France great again!--------------------(Reasonable historical deduction party, Paradox Interactive game players rejoice!)