MTL - For Thousands of Years, My Weakest Brother Has Become a Demon King (1000 Years Later, Even My Weakest Follower Has Become A Demon King) - Chapter 229 self-injection

Nine Tribulation Immortal Emperor, reborn in the city!One Earth, one Immortal Realm, the difference is as vast as that between heaven and earth!

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.

A new book “The Madame Hid Her Baby Bump and Ran Away, While President Jin Searched the World Crazily” is released! It's a unique blend of initial heartbreak followed by sweetness, featuring a genius and adorable baby. Expect an even more dramatic story, and we hope for your support!That year, Ye Weiwei was forced by her parents to take the fall for her twin sister and go to jail, where she gave birth to a pair of twins.Five years later, she returns with her daughter, outsmarting scheming white lotuses and saving a cute little bun.From then on, she is no longer just a former convict but becomes Mrs. Xiao, pampered to the point of weakness by Xiao Jinghan.

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