MTL - Eternal Reverence - Chapter 1181 Colorful butterfly

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.

It all started when the protagonist downloaded a game called “The Fool (Beta Version),” marking a pivotal shift in the style of his life. This was no ordinary game; it lacked visuals and music, composed solely of lines of text and a multitude of choices. Yet, each decision within the game had the power to alter the player's destiny, for on the other side of the game lay a real, unknown world.Players were unable to physically enter this otherworld or see its landscapes, experiencing the alternate realm solely through text, vicariously living each step of their character's journey.As the game progressed, not only could rewards from the game materialize in the real world, but creatures from the game began to appear in reality as well.Then came the day the game was released for global public testing.An era quietly unfolded, where the masses embarked on explorations and treasure hunts in an alternate universe through 'textual adventure,' heralding a new chapter of engagement and discovery.

On the day of the wedding, Feng Xi Er laid on top of the ‘Ghost king’, eager to take off his wedding robe. He squinted his eyes, flipped over and switched their positions. He held her dishonest hand and said, coldly, “Miss is so eager to get on This Prince? Are you so desperate?” Feng Xi Er was just desperate to prove something, and once again reached out to take off his mask. The Ghost King smiled evilly, grabbed Feng Xi Er’s wrist and began to remove her robe and say: “Since Miss wants it, This Prince shall satisfy you…”

- Description from Novelupdates

In the distant future, the world was in ice

Humans live in cryo facilities underground, awaiting for the distant Spring,

Robots manage the facilities

They built a ‘village’ there and lived there.

They dreamed that, one day, they would live together with the ‘Humans’ (Master).

This, is the story of the Ice Country.