MTL - The Great Era of Rebirth: 1993 - Chapter 41 ,you guess

Orson transmigrated into the body of a villainous young master in an overpowered protagonist novel, and the first thing he had to do after waking up was to welcome the protagonist, the real young master, back to the family?Is it too late for me to start sucking up to the protagonist now?I took the initiative to find my fiancée to break off the engagement, but her older sister wanted to take her place and marry me instead?To protect the real young master, I berated the imperial princess, but she secretly fell in love with me?I actively pushed the heroines toward the real young master, but the heroines forced me to become the yellow-haired villain!It’s over, truly…

Inexplicably reborn in the year 2003, having failed terribly in his previous life, the prevailing concern with Xu Tingsheng, that stands above all else, is none other than her. But alas, he is just months away from entering university, while she is but in her first year of junior high… Regarding this, all he can do is wait silently…for now.

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.

As a child with an unattainable dream, I yearned to become a Hero, but I veered off the right path. Looking back, my aspiration to save others was nothing more than a foolish dream. I now realize the magnitude of my sins and the impossibility of atoning for them.