Steel, Explosives, and Spellcasters - Chapter 82 - 38 The Mewa Brothers

This is an alternate history. Decades after the fall of the Eastern Jin Dynasty, the world is still in chaos, although there is hope for reunification.

Ever since she was a child, Ye Jiao was treated as trash in Chen Kingdom. Suffering from countless beatings and endless humiliation, Ye Jiao endured the harsh life without being able to do anything. Only a rare few cared for her and showed her warmth in this cruel world.But the Heavens didn’t give her the chance to live peacefully.It took the little things she had and pushed her over the edge into the bottomless abyss. Filled with despair and sadness, she had to hide and bide her time as a lot of people wished for her death.“I have lost everything; you can’t take anything else from me. But I will gain much from this in my path as Eon Energy Master---I’ll not give up and someday, I’ll reach the peak.”Her small hand plucked the stem of the white lily flower and gripped it tight, with determination flashing across her eyes. Trash? Her small lips curved up, tinged in mockery.Even if everyone around her wished to kill her, she would never give up.She will show them who the real trash was and become the greatest genius in the world!Even if the entire world was against her, she would not cower.She will reach the peak.

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.

Encountering a car crash, the King of Silver Screen, Ye Sinian, was bound to a Cannon Fodder Counterattack System.

After reincarnating for hundreds of lives, he has finally earned enough “travel expenses” to go back home.

However, he didn’t think that the system would suddenly malfunction, making returning back home from then on hopeless.

With the shackles of a millennium broken, Ye Sinian aggressively counterattacked!

Reversing fates while hugging the mentally ill* Lord Seme, he walked towards the apex of humanity!

*Mentally ill – Schizophrenic

- Description from Novelupdates