Reborn: I'm A Dragon Girl With An OP System - Chapter 7: First Spell

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 hidden dragon stirred from its sleep, the fierce tiger descended the mountain! Ye Wudao, following his master's orders, crossed into the mortal world, his medical skills so advanced they could reverse fate, his divine magic alone dominating the universe. Whoever dared touch my dragon scales, regardless of their power or status, was met with instant death!

Transmigrate to the world of One Piece, reincarnate as Saint Imu; Control the world government and sit on the throne of the void.He obtains the star map of the omniverse and contemplates the sea of dimensions.Gather all individual combat power, military power, financial resources and all material resources to open the star gate, conquer all dimensions, and break the limit of individual power!Unite or be destroyed, how to choose?

The True Spirit Continent is an era of prodigies and monstrous talents vying for supremacy. Kings roar and can make stars fall, while emperors can cover the sky with a flip of their hand. A young man named Xiao Ye, born humble, receives ancient inheritance and thus becomes the pinnacle of martial arts. He sweeps across enemies, battling through the Nine Wilds with passionate vigor, igniting the Nine Heavens with battle fervor.On the invincible battlefield, where the blood of geniuses forms a sea and monstrosities' bones pile up like mountains, Xiao Ye advances step by step, ascending to the peak, defeating all who dare proclaim supremacy in the world.As warriors, we ought to rather break than bend, decisive and resolute in slaughter, unhesitant in vendettas, and annihilate all enemies in the world!