Tale of a Hedonistic wizard - Chapter 26: A killer in the room

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.

Okay, so let me get this straight. I wake up and BAM, I'm inside the body of Valerian Thorne—a third-rate villain. I mean, come on? Out of all the characters I might have been reincarnated as, it had to be him? This man was literally a stepping stone for the actual hero. So why him? Why not someone with a little more. potential?Now that I have a system that can unleash Valerian's hidden potential, who knows? Perhaps this third-rate villain will get a second chance, alter his destiny, and prove the world what he is truly capable of. And if I happen to get to keep the gorgeous fiancée in the process. well, I'm not complaining.

Gu Qingmo began to disguise herself as a man because of a word from her master.

Later, because of the words of my brother, I tried not to open my mouth if I could.

Later, I don’t know why the whole cultivation world is talking about the old master of Wanjianzong, the closed disciple of Xiaoyao Sanren, who is cold-hearted, taciturn, self-restrained and respectful, and who cultivates the ruthless way.

Mo Chuli thought so until she died in her hands.

However, since he was reborn and accepted as a disciple by Gu Qingmo, he discovered that——

Well said, cold hearted! taciturn! Self-denial!

It’s all an illusion!

Small snippet:

The day before Gu Qingmo was going to take Mo Chuli out for a training session, the headmaster made a special trip to Jianfeng and said to Mo Chuli, “Chuli, my uncle told you that if your master wants to go out in the future, you will definitely to follow.”

Mo Chuli: “Sect Master, why is this?”

Liu Qingbai: “Your master’s words are easy to offend people, so you have to keep an eye on it.”

Mo Chuli: “…”

[Woman pretending to be a man to decorate the real world’s first upright and paralyzed heroine × Seizing the house after her death was accepted by the heroine as an apprentice and the former Demon Lord hero]

ps: The female protagonist has a ceiling level of combat power, and the male protagonist is a growth type

- Description from novelbuddy