Constructing-Style Wizard - Chapter 570 - : 184. The Ancestor of Metal_2

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.

Jonathan Brandit was once on the path to becoming a professional basketball player, but a car accident changed his life forever, leaving him wheelchair-bound and filled with regret. Haunted by thoughts of what could have been, Jonathan spends his days shooting hoops in a gym. One day, he suffers a heart attack and wakes up in a completely different world, in the body of another person.To his astonishment, Jonathan realizes he's now living inside the world of a novel he once read, titled “Turning Point,” which revolves around basketball. He has become an “extra” player name Ethan Albarado—a benchwarmer—on the protagonist's team, Lucas Graves.With this unexpected second chance, Jonathan or Ethan Albarado is determined to achieve his dream of becoming a pro basketball player.But in this new world, will he rise to greatness, or will he face new challenges that threaten to bring him down again?

Orson transmigrated into the body of a villainous young master in an overpowered protagonist novel, and the first thing he had to do after waking up was to welcome the protagonist, the real young master, back to the family?Is it too late for me to start sucking up to the protagonist now?I took the initiative to find my fiancée to break off the engagement, but her older sister wanted to take her place and marry me instead?To protect the real young master, I berated the imperial princess, but she secretly fell in love with me?I actively pushed the heroines toward the real young master, but the heroines forced me to become the yellow-haired villain!It’s over, truly…

The ancient continent of Wu is a place where cultivation is law and the strong reign supreme. Thousands fall to their knees when the strong appear, and rivers of blood flow when they’re angered.

A peak expert known as Xie Di fell and was reborn in a young man beaten into idiocy. He lost all of his memories and his cultivation was crippled, causing him to be despised by all. To rid his shame and fight against the destiny of being toyed by others, the young man cultivated with all his strength, killing experts, and splattering the whole country with blood. All until the day he becomes a martial god who shatters the firmament and scorns mortals.