Fortune Teller Master - Chapter 92.5: Wang Yin Part 5

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.

Lin Qian once thought the man she wanted would be handsome and formidable, able to “create clouds with one turn of the hand and rain with another turn” in the business world, causing her to look up to him in admiration. There would be nothing he could not accomplish.

Luo Qing Chen is a wandering spirit that died thirty thousand years ago, roaming the Chaos Space

In order to not turn into dust, she is bound by an ice cold system to travel through time and space to complete missions.

Girls that pretend to be weak?  Slap them without explaining.

A silly cannon fodder?  Helping them amass treasures.

Meeting a real male god?  All of them will pamper.

System: Dear masters, what do I do if my host even dares bully the heavens?  Waiting for an answer, it’s urgent!

A certain male god: Change systems.

System: ヽ〔?Д?〕丿

- Description from Novelupdates

The latest offering from the pen of the creator of “My Military Branches Can Evolve Infinitely”, Bimo Zhijian.---------------------------------------------The world has experienced a radical transformation. Source Qi has awakened and the apocalypse has descended.This is a catastrophe and also the beginning of a new epoch.Tang Yu somehow obtained a domain system, and while summoning warriors, producing equipment, developing his domain, drafting rules...as he looked back, he discovered that he was already standing at the apex of the era.