Global Reincarnation: Only I Know the Plot - Chapter 967:

Jiang Zhen crossed into ancient times and became the old bachelor eldest Jiang who was neglected by the whole family in the village of Jiang Xihu in Hexi Village.

He was born into a good family and Jiang Laoda is busy in the year but can’t eat a full meal. Two younger brothers can marry a wife, but he is starved to death… Jiang Zhen feels unbearable.

Don’t want to feed me? OK, I kill the chicken myself.

Don’t you give me a glimpse of food? It doesn’t matter, the door of the granary will be opened as soon as it goes down.

Want to tell me that I am not filial? Ok, I immediately took the knife into the county to slash people, and let the county grandfather grab all of us.

Jiang Zhen took the attire of the family’s best products and became a tyrant in the village. He also saw the “ugly” ger who could not get married in the village.

Future father-in-law: “Jiang Zhen is always wandering around our house. Isn’t it necessary to grab our house?”

The future mother-in-law: “What to do, Jin Geer must not beat him!”

Zhao Jinge’s face is hot… Dad, the wild rabbit that I got back today is what he gave…

- Description from Novelupdates

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.

After waking up, Vincent finds that he has transmigrated to a parallel world where monsters roam, a world that's no longer ruled by science.In this place, body practitioners can lift 10,000 tons of oil wheels with one hand, and espers can summon wind, rain, thunder, and lightning—born to be strong. Beast tamers can tame powerful monsters that become their most loyal pets.Vincent, who is just an ordinary young man, has successfully activated the Super God of War System and awakens three S-Class Superpower at the start of everything, making him a top super genius!S-Class superpower [Rapid Training]: Body is constantly strengthening every second. Even sleeping can increase your strength by 5,000 kilograms!S-Class superpower [Hellfire]: Burn everything and destroy everything!S-Class superpower [Monster Affinity]: Can communicate with any monster and tame any monster easily!Vincent has strike gold![Ding! One-handed strength achieved 50,000 kg, life expectancy increased by 300 years!][Ding! Instakilled giant monster, Nine-Headed Sea Serpent, obtaining S-grade equipment, Crimson Flame Divine Sword!][Ding! Tamed S-class monster, Storm Dragon King, obtaining a Divine Pet Evolution Pill. It can evolve the Storm Dragon King into an SSS-class Dragon God!'Vincent's heaven-defying path begins…

As everyone knows, there are three rules for survival:- Good grades.- Wealthy background.- Having Pei Yan's protection.Fortunately, Jiang Shaoyao meets the first two criteria. Unfortunately, she also meets the last one.Pei Yan, the school's top tough guy, rebellious and arrogant, is notorious for his troublemaking. However, he has devoted all his patience in his life to one thing—pursuing Jiang Shaoyao.His friends advise him, 'Brother Yan, give it up. The little fairy is a good student; she's not one of us. It's too hard to chase her.'Pei Yan scoffs: 'I've been spoiled from a young age, if I can't chase her down, then...'Two years later, at a class reunion:'Brother Yan, did you manage to catch up with sister Shaoyao?''Shut up.'...*A story of possessive young man VS a realistically clear-headed young woman.*No high school romance, but they get together after university.*Study hard, stick to your dreams—it's an inspiring story.