She Lives without Regret in This Life - Chapter 1004 - 1062: Overestimating Oneself

In a world where mysticism and steam industry coexist, cursed objects, the Reception Bureau, and Evil God fanatics...That year, the King was bedridden with illness, the successor was inexperienced, and power slipped away, leaving the empire teetering.That year, external forces gathered around the empire, and foreign civilizations eyed it covetously.That year, the prophet delivered a prophecy that the era of civilization was nearing its end.That year, Ethan arrived at a small town on the outskirts of the imperial capital. To survive in this perilous era, he began practicing Fireball Skill.Years later, Ethan looked at the meteor falling from the clouds and realized there was a problem.The beginner Magic he learned seemed a bit off.

[Simulator+Cultivation+Farming Stream+Survival Stream]One day, through transmigration, Su Xing arrived in a data-centric high martial world.This world had extraordinary strong beings known as professionals, favored by the “heavens,” who could level up and strengthen themselves by running dungeons and killing monsters.Su Xing changed his job to the hidden profession of Cultivator, but due to unknown reasons, he could not gain experience or level up like other professionals.Unable to level up, he could only cultivate… but in this era where Spiritual Energy was depleted and Cultivators were nearly extinct, even obtaining Spiritual Energy was a luxury. After four years in college, Su Xing was still a minor in the Qi Refining Stage, struggling even to graduate.Fortunately, he awakened the golden finger “Life Simulator,” which allowed him to simulate the future by paying energy and bring back the Cultivation Level, items, and more from the simulation to the real world.However, in the simulated future, the Foreign Race invaded in full force, leading to the overthrow of the Human Race overnight.In such desperate circumstances, Su Xing chose to lie low and develop, cultivating Spirit Plants, concocting Elixirs, enhancing his Cultivation Level, improving the overall strength of the Human Race… He continuously strengthened himself through the simulator, becoming a hidden powerhouse, silently resisting the invasion of the Foreign Race…ps: This is a story about a simulator, leaning towards a careful survival strategy, farming development, and operating from behind the scenes…

No family, no power, no inheritance — a thrice-lacking protagonist. Just how will the seed rise up from the mud?

- Description from Novelupdates

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.