The Older Man Is Addicted To Pampering His Wife - Chapter 9 - Want Some Spicy Crayfish

A small immortal clan, with the efforts of the ancestors of the past dynasties, slowly developed into an immortal clan. This is the history of the development and growth of a small family. During this period, there were ups and downs, and there were also struggles for power and profit.

- Description from novelbuddy

Here, only those with spiritual roots can cultivate while those with mortal roots are destined to stay mortal.

Mo Wuji only has mortal roots, but will he only remain as a mortal?

- Description from Novelupdates

In a world where everyone has the chance to ascend to heaven and claim the title of the No. 1 God by touching the Stone Tablet, battles rage across the three realms—Heaven, Hell, and Earth.People fight fiercely to climb to the top, each striving for ultimate power and dominance.But me? I’m Ragnarok, and I’m not really interested in godhood.My best friend, Jason, however, has always dreamed big. He wants the two of us to become the Duo Gods of the Universe, with one of us as No. 1 and the other as No. 2.Jason is like a brother to me, and I’ve always had his back. So I’m just going along for the ride, supporting him as he chases his dream.What neither of us knows is that I’m the strongest being in existence—a power even I’m unaware of.Join me on this thrilling journey to godhood as I uncover the truth about my strength, fight alongside Jason, and face challenges across all realms.

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.