I Have a Mansion in the Post-apocalyptic World - Chapter 1529 - Reward?

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.

“What I want, the Heavens shall not lack! ”

Even after knowing what came next....I still accepted.A deal with the devil herself.A devil, in the form of a goddess.I accepted a life that I knew wouldn't end well, a life that was worse off than the very curel one I already lived.But I still choose to do it.I chose to become the villain.

What to do when you find yourself transformed into the vicious female supporting character in a family that dotes on the group pet?Of course, it's to keep away from the protagonist,She's practically the darling of the heavens, with a protagonist halo so strong even a dog would fall for her.Hiss, Bai Zhi said, “Can't compete, can't compete, cherish life, stay away from the protagonist.”All she wanted was to quietly make some small money and live freely, but—Group pet with tearful eyes, “Sister, come back, I'll let you have our brother.”Bai Zhi, “...” No need, I refuse.Group pet with an overflowing Mother Teresa complex, “This was all my fault; please, don't blame my sister!”Bai Zhi, “...” Look at this white lotus script; hey! Where's my knife?—Even more fantastic was when that baby-faced weak little brother suddenly appeared midway and transformed into a boss!Bai Zhi, “???”A new book has started; the Film Emperor's daughter is hibernating again. There are new book activities, sweet, sweet, sweet