My Vampire System (WN) - Chapter 116: From the big four

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.

Super-genius Ellen Young, creator of countless tech products, retires.At the height of her career, she turns down numerous high-paying offers, yearning only to return to the countryside and lead a peaceful, laid-back life.Unexpectedly, her long-lost family comes looking for her, and a celebrity sister requests to live-stream their countryside life online.Ellen Young: ?A big, fat no!Netizens around the world think that this newly found daughter in the celebrity’s family is illiterate, lacks manners, is completely crass, and without any redeeming qualities.Becoming a laughing stock of the internet.Until.....Why is a world-renowned professor calling her teacher online?Why does a well-known CEO furiously comment 'If you don't come back, I'm not managing this company anymore'?Why are numerous consortiums sending barrages online, appealing for lower patent fees?—Isn't this just a country girl selling radishes online and making ads?

Alex was an ordinary teenager—until the day he discovered his ability to drain energy from the dead. With powers rooted in death itself, Alex hides his necromancy behind a normal life, secretly entering deadly portals to fight monsters and earn money. But beneath the surface, a darker truth lingers—his parents's death and his powers are linkedAs he harnesses his necromantic abilities, draining the fallen to grow stronger, the weight of his power begins to take its toll—and the line between the living and the dead starts to blur.With enemies closing in and betrayal around every corner, Alex must master his growing abilities before they consume him—or worse, before the forces hunting him claim everything he has left.When death becomes your greatest weapon, how long can you survive before it turns against you?---

The destitute young miss of the Ling family was weak, had lowly qualifications, was ugly and frequently bullied. In the end, she was pushed into the freezing river by her so-called love rival. However, when she opened her eyes once again, her gaze was cold yet captivating! Everything had changed drastically! When her ugly looks faded, she became a peerless beauty. When she displayed her graceful bearing and talent, it was blinding and earth-shattering!