Restarting From Genesis - Chapter 5: A medical checkup.

The countries of Mephius and Garbera have been waging a war for ten years and are trying to put an end to this long fight through a political marriage between the two royal families. Orba, who was driven from his home because of the war and was forced to become a gladiator, looks exactly like the crown prince of Mephius, and it has been decided he will be substituting him during the wedding ceremony. On the other hand, Vileena, the princess of Garbera, has secretly decided to ensnare the crown prince for her own country’s interests.

He is a legend among film directors, he completely changed the whole world’s view on Chinese directors! —Washington post.

He once again created a legendary movie, and the flock of fans almost collapsed the movie theater! ―Chicago Sun-Times.

To cry with his movies, to be moved by his movies, to shout crazily because of his movies, what else is impossible? A legendary figure in the director world, who made everyone who laughed at him feel ashamed! -New York Times.

He is the hottest director in Hollywood, the lover in the eyes of all beautiful actors and movie fans, unparalleled, a legendary director who rises like a comet, director of this brilliant life, a legend that subverts all old concepts, welcome, super director ——Smith Zhang!

- Description from novelbuddy

Divine techniques? Heaven’s gifts? Divine Weapon? Special Abilities? Unique Skills? Heavenly Talents?No, I don’t need them because I can create Heavenly Laws!In the boundless expanse of the starry seas, Lin Yuan wielded the extraordinary ‘Gate to the Myriad Realms’, he can transmigrate his consciousness in various world and comprehend any path!Embarking on countless odysseys, Lin Yuan’s relentless quest for strength knew no bounds. Through the cosmic tapestry of diverse worlds, he quietly forged his path, ascending from the depths of mediocrity to an unparalleled force.With each journey, he honed his skills until, at last, he stood as an invincible presence, dominating across all realms. The saga of Lin Yuan is a mesmerizing tale of cosmic ascent and relentless growth.

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.