MTL - Ascending, Do Not Disturb - ~ 112. Try

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.

What is a genius? Capable of comprehending any battle skill regardless of the skill itself and sweeping away the bottlenecks while cultivating a new technique; this is a true genius! He Yiming was originally an ordinary youngster in the He family’s estate with not too extraordinary aptitude in learning martial arts.

However, after a fortuitous encounter, this ordinary youngster became what people refer to as genius in a single leap. Possessing an aptitude for learning martial arts which would leave people in awe, regardless of whether it’s his clan’s Houtian Scripture of Five Phases or various Xiantian scriptures of legends. Regardless of whether it’s mental techniques or battle skills, he can comprehend them all in their entirety at a frightening speed. Martial God, with martial as its name, using the most simple and direct approach, thrives!

- Description from Novelupdates

A next-generation virtual online game, a hardcore gamer, a glitch that shouldn’t have existed… By sheer coincidence, Meng Jingtian ended up being the sole player god in a game. Thus, while ordinary players worked themselves to death running missions for NPCs to win their favor, NPCs prostrated before him! While ordinary players almost vomited blood grinding for gear so that they could solo bosses, the king of divine beasts kneeled before him, willing to offer its life and worship him. And while players went to suicidal lengths to trigger random events and lucky encounters, transcendent beings came to find him so that they could offer their precious treasures as tribute.

Within the Huang Realm, a world where the era of divinities has ended and the era of immortals is nearing its waning years, exists the Buzhou Immortal Sect. And within the Buzhou Immortal Sect on Jade Peak was a disciple of the sect, Xi Tianyi. He was of noble birth, the only child of the Sword Empress who reigned invincible.

But the truth was that Xi Tianyi, was originally an ordinary mortal from Earth who suddenly woke up one day as in another world filled with immortals and demons. Under heavy pressure, knowing that his life is at stake to whoever is strongest, Xi Tianyi quietly cultivates in hopes of one day fearing no one and discovering the circumstances of his transmigration. But…

«You bastard, you stole my fiance!» Said a former genius who had lost all his cultivation.

«Bastard, pay with your life for the death of my entire clan!» Said a cultivator with blood leaking from his hatred filled eyes.

«What the hell?! I’ve been cooped up cultivating quietly so why are you guys suddenly finding trouble with me?! Besides, I’m only ten!» Cried out Tianyi in disbelief.

«Fine, if you want to make me your cannon fodder, I’ll step on your corpses for my ascension!»