MTL - The Marquis Is Innocent - Chapter 122

A genius talisman practitioner is reborn as a seven-year-old girl! However, her innocent appearance belies her vicious personality.

Bai Aoxue, the best mercenary in the 21st century, is accidentally sent back to the Chengxi Dynasty in Great Continent due to an explosion in her mission, and trapped in the first daughter of Prime Minister. After her rebirth, she is set up by her father to marry the 5th prince Jun Yeyan who wears a mask all day long.
In the face of bloodthirsty enemies, discord between brothers, collusion among courtiers and invasion of enemy state, can Bai and Jun resolve the crises? What will happen to their political marriage? How will the fierce battle for the throne end?
With many twists and turns, the book brings you to experience palace revolution, love and hatred thousands of years ago.

- 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.

After waking up, Su Mu found himself in a Three Kingdoms game beyond reality, and became a low-level farmer NPC who was recruited by the player’s village.

The Three Kingdoms were in troubled times, and the wars were endless.

The safety of the farmer NPC cannot be guaranteed in the slightest.

Fortunately, with a unique talent, Su Mu, who was adopted by Bai Fumei players//raised, can change jobs infinitely!

Turn 1 [militia], turn 2 [archers], turn 3 [spearmen], turn 4 [heavy armor sword], turn 5 [black cavalry], turn 6 [generals], turn 7…

Unlimited career transfers, unlimited enhancements!

When the game and reality are connected and the supernatural comes, Su Mu has already become a mythical general who can beat the world, unifying the game and reality, and creating his own supreme fairy garden!

- Description from novelbuddy