While Others Cultivate, I LVL UP In My Sleep Using The Dungeon System - Chapter 491: Old Memories

In the twenty-ninth year of the First Emperor, Bo Langsha was attacked.

When Ying Zheng merged the memories of the 21st century history doctor, looked at the mighty mountains and rivers in front of him, and said to himself, “In this life, my Daqin can’t die!”

- Description from novelbuddy

kingdom-building video game. Now the lord of a struggling FF-rank village, Rowan is tasked with an impossible mission: to transform his village into an unrivaled SSS-rank territory.Fortunately, Rowan wasn't left alone as his rewards reflected before his eyes.-SS-rank 100x Reward-SS-rank Copy-SS-rank Merge-SS-rank..-....Armed with these powerful skill, Rowan set out to build the greatest territory and become the unrivalled lord!

Vampire Queen Shang Yu awoke at the auction house after a ten billion bid for her corpse.A gunfight broke out during transport and she stood up from her coffin.The scent of blood in the air was truly delightful!Her eyes fell upon the injured man and she tilted his chin, lightly kissing his wound:“You taste sweet.”…It’s said Shang Yu’s meteoric rise relied on men, but deeper digging revealed her aliases were all shocking, plus nine elder brothers and sisters who doted on her.She was known as the business world’s foremost abstinent queen.Yet she was photographed eagerly pressing a certain tycoon in a car, kissing him as he let her have her way.

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.