Legend of the Cultivation God - Chapter – 146

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.

The eldest son of the assassin aristocrat Tuatha Dé.

The skill, experience, knowledge of the previous life, magic, all of which grows his power as an assassin.

Excellent assassins pass through. He was usually admired as the ideal lord, and behind it wielded a blade as an assassin aristocrat.

Upon waking, Wang Shan finds himself in Room 888, the most luxurious accommodation in Cloud City, typically reserved for the wealthiest. Despite his complaints about the “”subpar”” room, five stunning women are waiting to inform him of his first-place assurance in an upcoming test due to his powerful father’s influence.A stranger to this world from the 21st century, Wang Shan learns that martial prowess is paramount, categorized into nine realms. Today, he must take the One-star Cultivator test, despite his supposed lack of innate talent. His father’s status as the ruler and a formidable Two-star Expert guarantees his victory, but the arrival of the gifted Zhang Bao poses a deadly challenge.As Wang Shan bathes, he hears a voice in his mind: “”System binding, binding successful.”” A powerful trading system allows him to trade anything he touches, enabling him to instantly advance his cultivation. With newfound power, Wang Shan contemplates his next move. Will he overcome the threats and rise to greatness with the help of his mysterious system?

After dying a pathetic death as an overworked office drone, I woke up reincarnated as Archer—the bastard prince of the Brutish Empire.My existence is a royal secret as My father, the King, would rather pretend I don't exist. My half siblings get royal treatment while I'm hidden away like a dirty secret.But I have a secret of my own. I was OP.By age two, I realized monsters flee from my stupidly OP mana. By age ten my mana could level cities—if I dare to unleash it.When my half-sister is kidnapped by the demon king, I finally decided to step out of hiding to become the strongest in this new world.