I am grinding experience in another world - Chapter 659 - 647 Contract

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.

When gods gather, lightning will strike and the earth will move. Immortals! Which of the numerous way to immortality should one follow? Immortals are hard to seek, but why should immortals hide? Heaven has no mercy, but humans have emotions, and these emotions hinder the road to longevity!

“I thought we were brothers, and this is how you treat me?”Clutching his bloodied abdomen, John stared fiercely at the two figures before him.And the dragger embedded in his stomach was none other than the symbol of their former friendship: the legendary gear [Apate’s Whisper].“Just got a little lucky, and you think you’re so great?”“Claiming to be blessed by the Goddess of Luck? I’d like to see where your Goddess is.”“Hahahaha…”Amidst the taunting laughter, John’s world gradually darkened.…[Ding, congratulations to the Host for becoming player number 001 in Apocalypse]“Didn’t I die? What time is it now?”[Ding, congratulations to the Host for acquiring the SSS talent Kiss of LUCK, randomly gaining a hundredfold Bonus!]“A hundredfold Bonus?”[Ding, the Host executes a normal attack, physical damage 5; based on talent evaluation, deals a total of 2000 points magic damage!][Ding, the Host obtains an iron dagger, quality common; based on talent evaluation, it upgrades to a Legendary dagger!][Ding, the Host obtains a magic scroll, quality rare; based on talent evaluation, it upgrades to a Divine scroll!]“Good, this time, you all will pay for what you’ve done!”

Thomas Lowe was destined for a life of mediocrity as he worked a dead-end job in rural america. But fate seemed to have other plans for him. One card changed everything. A power beyond imagination. A prophecy that put him in the crosshairs of Ancient Clans and Noble Houses that have existed since the dawn of the first era.The name of that card was....