Incredible Insight: Cultivating Immortality at Eight, Astonishing Zhang Sanfeng - Chapter 269

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.

Talismans are a part of cultivation and what a better way to get into cultivating than to have the three top sects send talismans around.The “good” sect sends a talisman to make someone extremely beautiful.The “bad” sect sends a talisman to make everything around the person turn into a death sentence.The “neutral” sect sends a talisman of amplification by accident.What happens to a woman who has just gotten pregnant?Everything hits her belly.Join in as Rex who is in the fourth mortal realm gets a second chance to cultivate.

I became a scientist for an evil organization.…But I’m too competent.

In a world where 99.9% of all men were wiped out and future births only had a 0.1% chance of being male, the role of men in society became that of celebrities graciously donating their seed to the masses. With the world population declining, pregnancy has become a social status, affording women government assistance, health insurance, and citizenship should they find a man to bless them with seed. With an only 1 in a 1000 chance of finding a guy, many women will do anything it takes to get close to a man and become pregnant. And should those women bear a male, it’s like winning the lottery, the remainder of their lives set as they receive massive stipends and no responsibility but to nurture their sons. Clyburn was reincarnated into such a world. Can a former unsuccessful business man properly navigate a female-centric world full of woman who just want to use him for his seed? With an overprotective mother, two caring sisters, and the mind of an adult, he might just.