MTL - Rebirth in a Perfect Era - Chapter 1786 10 billion in 10 years

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.

There was a special patient in Spruce Hospital. A person in vegetative state and coma that the tree doctor, So Lee-yeon, has been hiding for two years…‘Don’t wake up. Please don’t wake up.’It was her dream to live quietly so she prayed every night. Then one day, by pure miracle or failure, the person in vegetative state woke up!“Did you come to suck this poor bastard’s dick?”In front of the man that lost his memory and common sense, she told a lie that couldn’t be turned as she was afraid of his mu*derous instinct.“I’m your w-wife, Kwon Chae-woo.”To the man who buried someone alive and tried to kill her two years ago!

If you had a chance to live again, what would you do? Earn money, hold onto a thick leg, just find someone to live a happy life with? Ha ha… Stepping on the beat of the times, riding the wind and breaking the waves, strategizing, using your knowledge to change yourself, and everything around you, come back! The reality flows to the plot, the golden fingers are thick, slow, and cool.

- Description from Novelupdates

When Shen Yu woke up, he had accidentally gone into a ridiculous dog blood novel.

In the novel, he is a poor cannon fodder character, dead father and mother, fiancée runs away, drags a pair of legs and lives lonely in a 20,000-square foot mansion.

Later, in order to compete for the female lead, he died under the opposition.

In order to save his life, Shen Yu had to stay as far away as possible from the leading and supporting roles and concentrate on enjoying the luxury life.

As a result, one day, the servant brought a 10-year-old villain with bruised eyes: “Sir, this is the orphan of Tang’s family.”

Shen Yu: “…”

Shen Yu decided to adopt the small villains and change his fate.

Ten Years Later.

The villain pushed Shen Yu to the corner: “Who is that woman?”

Shen Yu: “… Who do you say?”

The villain: “The woman who seduced you at last night’s banquet! “

Shen Yu: “…”

The villain: “Hehe, I’m going to kill her.”

Shen Yu: “My son… That’s the female lead you forgot by the Lake…”

- Description from novelupdates