Sin System: Demonic Harem After Reincarnation - Chapter 43

Once an imperial princess, now reborn among the lowest of s*aves of the nobility.

Why, seems like I’ve become a haunted portrait.

At 35, Lin Zhi finally died from exhaustion on the delivery table!In her life, she was never married or had children, faced with a difficult and bumpy fate, but fortunately, she successfully delivered 3000 babies.After death, she arrived in hell, where King Yan, appreciating her merit, allowed her to be reborn at the age of 20, and even bestowed her with a pair of... Holy Hands for delivering babies?!Lin Zhi was somewhat bewildered, she didn't want to be a midwife again!“King Yan sir, that... actually, you could grant me a cool, super-rich, devastatingly handsome husband who would love me for a lifetime.”King Yama said, “Lin Zhi, I think you'd better come back to hell with me!”

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.