The Spiteful Bride, Marry to Rival's Son - Chapter 139

Weird World revival, strange stories unfold. The “Unspeakable” has come to the real world, and those chosen will enter the weird world to represent their respective countries and challenge the Unspeakable.Now, Gu Yi has been selected by the weird world to represent the Dragon Country and challenge the first dungeon world, the Chongshan Hospital, where the death rate is 99%.[Patient Handbook]1. Take medicine on time three times a day.2. Please keep the ward clean at all times.3. People wearing bird beak masks are doctors or nurses, please follow their advice carefully.4. If you see blood dripping from the ceiling in the hallway, do not panic, as this is normal.5. If you notice any equipment damage, please contact someone wearing an elephant mask for repairs immediately.6. There are always two people in the ICU, please keep this in mind.On the back of the page was written in blood: “Do not take any medication given to you. They are a group of demons who will lead you into the abyss.”

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 young middle school student faces a life-altering choice. Destined for mediocrity and without a War Spiritual Bloodline, he dreams of transcending his ordinary existence and becoming a high-status War Spiritualist. His world is transformed when he becomes bound to the “”Godly Pet Evolution System,”” enabling him to activate his War Spiritual Bloodline and cultivate divine pets, even from the most unlikely sources.Armed with this system, he defies expectations by nurturing underdog spirits into formidable allies. The seemingly weak flower spirit evolves under his care, as does his Lord White Dragon, challenging the mightiest thunder-attribute battle spirits. Even when presented with a Diamond Demonic Spirit Card, he counters with three Epic-Demon Spirit Cards of his own.His journey takes an unexpected turn as powerful entities, including the Six-Tailed Demon Fox, the Phoenix Holy Maiden, and the Queen of the Seas, vie to become his second battle spirit. Faced with a wealth of choices, he refuses to settle for just one and ambitiously aims to harness them all.

This stands at the forefront of strategy guides to Life (a shitty video game)!