Mr. Qin, Your Mute Wife is a Full-Level Bigshot - Chapter 299 - : Who’s the Shameless One?

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.

In her last life, she was miserable and ordinary. This time, she got into the fashion and was reborn in another world. She was still the same person… even with the same body and face. What was the point of reincarnation? A childhood companion? He always pulled her hair and made troubles for her? A handsome boy? The boy never looked at her and was 15 years older than her! A prestigious teacher? The teacher spent his days eating and drinking, coaxed, played tricks, and controlled others… Too scary and better run away? No no no, such a challenging life was bound to be wonderful! Now let me take you back to the 70s and live a fast life!

- Description from Novelupdates

Hyperthymesia. Those with this condition can remember every detail of their lives from something as significant as the world’s turning point to something as small and as insignificant as a minor fleeting thought. They cannot forget and their thirst for knowledge allows them to be considered genius in some senses.

Legend has it that Ji Yushi was this kind of genius.

In addition, it was said that he was gay and very beautiful.

As soon as the news that he was going to support Tianqiong’s seventh squad broke out, it sent everyone buzzing.

Everyone knew that the captain of the seventh squad, Song Qinglan, was a hoodlum and deeply homophobic.

He not only relied on his super-powerful abilities to become the dark horse on the battlefield in less than two years, but he also hates it when those at the top forces a flower vase* into his squad.

Sure enough, Song Qinglan announced in front of everyone, “Useful? Us brothers are going out there working ourselves to the bone, we don’t need a little genius who can only speedread quantum waves!”

Later.

The squad was forced into a dire situation during their mission.

That beautiful little genius calmly continued, every gunfire hitting the mark, his fighting power peaking.

Song Qinglan begged in front of everyone, “Adviser Ji, stay.”

In the end, he added, “I’ll work myself to the bone for you.”

*****

Ji Yushi had a secret.

He would often be awake at night, suffering from memory overload and recurring nightmares.

There was only one thing that could let him fall asleep peacefully.

And that was Song Qinglan.

*Flower vase: Someone who only looks pretty but can’t amount to much

In 2010, James made a decision to take his talents to South Beach, joining the Heat, and faced a barrage of online criticism.“I fully support LeBron's choice; he made the smartest decision.”When Hansen posted his support for James on social media, he too encountered a storm of backlash.The criticized Hansen quietly took out his Anti-Fans System, looking at the soaring value of anti-fans with a content smile.