MTL - Bourne: Command and Conquer - Chapter 176 , buy

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.

Down and out of luck, Yuki was. She was fired from her job and needed to find money to pay rent for her low income housing. The only saving grace was a news report she saw. Soul Fusion Online: a vrmmo taking the world by storm. A place where players can turn in game money into cash in the real world. A living world where even the NPCs are as real as anyone you would meet on the city streets. A game with cultivation and leveling mixed together.

After creating a male character to play the game with, Yuki begins her journey on her path to becoming a legendary figure in the gaming world. Meeting new friends along her journey, she slowly begins to come out of her shell and loner life, both in game and real life.

____this story sets in Japan that developed a little different history from yours.

This is how a Japanese Princess relieves her stress of the day by using the latest VRMMORPG, and while playing the villain there, the first town turns into whirlpool of chaos, smashed the underground organization in one hand and went for a coup. It’s literally a playtime diary of a girl who is called as “Genocider-san”, “Roaming Last Boss”, “A different person plays the game”, “Raid Boss”, “Ruthless”, “Calamity”, and such by the players.

God Level player Lin Yi was transported into a game.

There are many familiar sects ——– Shaolin, Wudang, Emei, QuanZhen, Mount Hua, Mount Song, Mount Heng, Mount Heng, Mount Tai, Peach Blossom Island, Sun Moon Polytheism, QingCheng….

There are many Legendary Martial Art ——– Nine Yang manual, Nine Yin manual, The Passage of Time, Six Meridian Divine Sword, Riding the waves with small steps, Taiji, Subduing Dragon 18 Palms, Yi Jin Jing, Tendon-Altering Sutra, BeiMing Manual, Eight wild Six fit i alone honour, DuGu Nine Sword, SunFlower Manual….

At a time when the court is weak, Martial World in disorder

In order to protect own cherished thing —

Lin Yi entered the stage

This is gradual growth of juvenile in disorderly Martial world, in the end become generations of giants, Martial arts don’t die, rise from the ashes!

- Description from Novelupdates