MTL - Approach - Chapter 34

In a galaxy far away, there is a kid without innate ability to practice internal techniques. So, in order to gain the respect of his father, he resolutely chooses to follow the more difficult and painful path of practicing external techniques. As the years go by, he grows up, but what really changes his life is a mysterious meteoric crystal stone – the Meteoric Tear. This stone fuses with the young man’s body unnoticed, and he seems to undergo drastic transformations as a result. After that, everything is changed. Eventually his father knows that the son for whom he hasn’t really shown a lot of consideration possesses astonishing abilities. And there’s a lot more to come.

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.

Gu Man, who transmigrated from ancient times, woke up in the body of the Gu family’s second daughter.

As soon as she woke up, she saw the fiance of the original body who had hooked up with her stepsister. Faced with the scumbag’s confident questioning, disgusted gaze and a slap to her face, Gu Man’s reaction was to return a fierce blow to him. She hit him until he was dizzy and knelt to the ground, his lower body covered in cold sweat. Gu Man only realized that a video of her walking into the room had been leaked after she left, and the matter had begun to spread rapidly.

Countless people insulted Gu Man and called her a mistress.

Faced with a two-faced stepsister, a malicious and deceiving stepmother who climbed her way up from being a mistress, and a father who couldn’t tell wrong from right and treated her as more of an adopted daughter, as well as those stupid onlookers who didn’t know the truth of the matter and called her a country girl… Gu Man ignored them all.

The top scorer in the college entrance examination, top hacker, divine doctor, financial tycoon…

All kinds of identities were attached to a single person. Gu Man relied on her own strength to ruthlessly slap them all back in the face!

The noble Xiang family’s eldest son, a powerful man in the capital, even declared to the public that his wife was mischievous, and that he would take the blame if she made a mistake.

Just when everyone was wondering who this sweet wife of his was, the entertainment headlines published a photo of him holding his sweet wife as they walked in and out of a high-end hotel. The woman in the picture was Gu Man!

Xiang family’s son: Everyone, meet my wife!

In the waves of steam and machinery, who could achieve extraordinary? In the fogs of history and darkness, who was whispering? I woke up from the realm of mysteries and opened my eyes to the world.

Firearms, cannons, battleships, airships, and difference machines. Potions, divination, curses, hanged-man, and sealed artifacts… The lights shone brightly, yet the secrets of the world were never far away. This was a legend of the “Fool”.

- Description from novelupdates