Villainess Is Changing Her Role To A BroCon - Chapter 209

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.

As a precocious child, Lycoris suffers from a strange sense of deja vu. On the day her father told her about her fiancé, she realizes that her fiancé was a character from an otome game she once played in a previous life.

Chu Chen transmigrates into a beast-taming world and awakes his golden finger--the Slaughter Atlas after the awakening ceremony. With this Atlas, Chu will fight his way from weak to strong, evolving his Guardian Beast from ordinary to god-like.“This ape is a Thunder Ape, a beast with dual rare attributes of Beast and Thunder. It has few rivals in the same realm and is priced relatively inexpensively at four hundred thousand.”

In 2028, the Abyss invaded, accompanied by the arrival of Extraordinary Power, bringing Blue Star into the era of universal awakening.Chu Xiu, a transmigrator who inherits the Infinite Saint Dao Sect, looks at the insane Demonic Secret Techniques before him and falls into contemplation.“Crafting a Bone Banner requires the sacrifice of hundreds of mortals. Well... do zombies count as humans?”And he quickly discovers that those Abyss creatures work exceptionally well for crafting Demonic Artifacts. Most importantly, their number was almost inexhaustible!