Finest Servant - Chapter 587

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.

Ethan wakes up expecting to see the walls of a hospital room—only to find a system message blinking in front of him:[Ding! You have killed a green worm][Ding! Green worm has been added to your summoning list]

In a world where ancient magic has been resurrected. Atlas, an orphan from Earth, finds himself transmigrated into the body of a child and possesses the rare Void Magic. Harboring such power, he’ll walk the path of becoming stronger and stand free in the sky above all existence!The tale of the Legendary Void Walker is about to begin!The cover doesn't belong to me! The title was done by TiramisuAndCoffee!

In the mainland of the dragon, humans can also cultivate. But even if human beings are stronge, they will still be suppressed by the dragons. The true ruler of the mainland is the Dragon!

Ning Qi was a young mafia boss on the earth, but was betrayed by his most competent subordinate who pushed him down the cliff. When he woke up, he found himself located in the dragon’s continent and became the 13th son of Champion Duke of Qin Tang empire. At the same time, the super dragon slaughtering system was also activated, which changed his fate.

Who are Ning Qi’s biological parents? Where are they? On this continent, how is Ning Qi’s past-life identity amazing?

- Description from Novelupdates