I Level Up by Killing Gods - Chapter 34: The First Piece

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.

She is one of the best thieves that the world has seen in the 24th century. However, not even in her wildest dreams had she imagine that she’d be reincarnated as a good-for-nothing orphaned Seventh Miss of the Vermilion Bird Family. She finds herself stuck in a family that mistreats her, as well as an unfamiliar place with no support system.

Her father cheated on her and her mother remarried. Qin Yilan, who seemed to live in a dog-blood drama since childhood, finally lived a good life with a house and money after half a lifetime of hard work. As a result, she was diagnosed with breast cancer during a physical examination! ! !

Half a lifetime of hard work was in vain, Qin Yilan laughed angrily, thief God! Want me to die? no way!

Qin Yilan, who fought against fate, didn’t fall to his death, but because of his behavior of going against Tiandao even in death, he met a partner, Tiandao’s trumpet!

Tiandao Trumpet: You and I join forces to change the fate of a specific candidate.
Qin Yilan: Why do you do this?

Tiandao trumpet: If you change too much, Tiandao will become stupid, and I can take the opportunity to replace it and become a new Tiandao.

Qin Yilan: What’s in it for me?
Tiandao Trumpet: Is immortality enough?
Qin Yilan: Done!

Content tags: Face Slap System Quick Wear Shuangwen
Search keywords: Protagonist: Qin Yilan, Tiandao trumpet ┃ Supporting role: The hero and heroine of each world ┃ Others:

- Description from novelbuddy

In this world, people are granted a power said to come from the heavens, a mighty weapon tied to the soul of humans. Those who receive these magical weapons fight against monsters to survive, driving the economy of this world.Lian is just an ordinary boy until his world is turned upside down when another race takes away what matters most to him: his family. From that moment, follow Lian's journey as he seeks the strength to avenge those who killed his family and uncovers the truth behind his power.