MTL - Reborn: Revenge of the Concubine’s Daughter - Chapter 733 Take 3 baths and govern the country

Ryu Han-bin, the main character who fell into a new world after being chosen as a ‘suitable person’.

Because of the error in the guidelines, the training is repeated endlessly…

A young man from the Miaowei Tribe brought up by his strict father, suddenly turned into Wizard I on the day he was orphaned. He then obtained the ability to control giant worms.

“You saved me, to repay you, I decided to devote myself to you!”An Ran just did a good deed casually, but was entangled by this black-bellied, ice-cold face.“No... no need, I'm still young,” An Ran sweat madly inside, waving her hands repeatedly.The man, however, was very serious: “I will wait for you to grow up.”But, isn't your image of throwing a tantrum too unbearable to watch?Didn't you say you were like Cold-faced Yama, aloof and abstinent, with an eight-thousand-meter glacial demeanor?A certain brotherhood wiped a bitter tear and said, what's the big deal about throwing a tantrum? Neglecting friends for love, betraying friends for affection, and always have to be ready to be fed dog food. They just want to ask, such a brother, can we return him?

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.