I Have A Martial Dao World - Chapter 752 - 751. The Might of the Immortal Emperor

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.

Tang Chuxia, with her ample bosom, slender waist, and long legs, has a face that's both innocent and sultry. Unfortunately, she's known as a crazy beauty!Gu Beihuai, with wide shoulders, long legs, and a 'hound's waist,' is rigid and highly capable, but he's also willful and extremely arrogant in private.Everyone knows that Gu Beihuai detests his childhood friend Tang Chuxia, and they despise each other on sight.In everyone's view, even if they were the last two people on earth, they would never end up together.However, at a matchmaking event organized by the compound, the charming and seductive Tang Chuxia ends up pinned against a wall, surprisingly by the old-fashioned Gu Beihuai.“Don't you like me?”His hands firmly grasping Tang Chuxia's slender waist, he hears her whisper in his ear: “Once we're married, can I kiss you as much as I want?”

To save a doomed fantasy world, I killed the main characters, then destroyed the game world, and fell into another timeline as the academy's top seat and rival to the protagonist.Now, I'm trying to save the world and steer it towards a better ending…But I'm the final boss.

The hidden dragon stirred from its sleep, the fierce tiger descended the mountain! Ye Wudao, following his master's orders, crossed into the mortal world, his medical skills so advanced they could reverse fate, his divine magic alone dominating the universe. Whoever dared touch my dragon scales, regardless of their power or status, was met with instant death!