SSS-Grade Cafe in Front of The Dungeon - Chapter 101

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.

He is the ruler of the mercenary realm, an overlord that gives headaches to the leaders of any country! For the sake of his friends, he’s willing to sacrifice himself; for the sake of his family, he does not hesitate to spill blood! He is a dragon, one that soars above even the highest of heavens. He’s a power that advances triumphantly through unstable situations, stirring up both the winds and the waters.

When Zhaozhao was ten years old, she was brought back to the Marquis household as the true daughter. Her parents doted on her, her brother was close, and even the fake daughter treated her with warmth. Zhaozhao once thought she was dreaming, and she treated them with all her heart.Until they personally sent her into the Tomb Guard City, a place that devours people whole, she realized she was merely brought back to exchange and protect the fake daughter.For five years in the city, the Marquis household ignored her.They let the sons of nobles from distinguished families use her as a punching bag, abusing and beating her, leaving no part of her intact.She died in despair the day before she was to leave the city.At the moment of her death, Zhaozhao awakened.—A hundred years ago, the ghostly gate opened, and the Ghost King led thousands of ferocious ghosts out of the underworld to wreak havoc on the world.She was originally King Yan of the underworld, descended to experience trials due to dereliction of duty.Once Zhaozhao opened her eyes again,The world changed colors, and she held the Book of Life and Death, transforming into King Yan to claim lives.Judging good and evil, slashing enemies.Once she gathered eighty-one evil souls and captured the Ghost King, she could return to her position.—On the day she left the city, the Marquis couple and her brother came personally to pick her up.Zhaozhao didn't even glance at them, turning to get into Prince Su's carriage.Her parents cursed her as an ungrateful ingrate, and her brother sneered that she would come crying back to beg them.Later, all of them knelt on the ground, crying, begging her to return home.Zhaozhao watched coldly.She would no longer want anything tainted.—Prince Su was born shrouded in Evil Qi, and anyone close to him would either die or be injured. Everyone thought he would be lonely for life.He had a delicate young lady by his side.She appeared to be pitiful and charming, but was ruthless and decisive behind the scenes.Once she absorbed the Evil Qi and gathered the evil souls, Zhaozhao planned to pat her butt and leave.Prince Su's eyes reddened, saying, “Zhaozhao, take this prince with you!”

An orphaned boy with dreams of making it big through being a blacksmith is given a once in a lifetime chance to succeed when he's taken in by an odd pair - Eggor and Ella. While former teaches him the arts of craft, the latter teaches him the mysticism of cultivation, granting him two paths to tread in this life.