My Sword Intent Can Be Infinitely Improved - Chapter 510 - : Special Dark Crystal, Formation of an Army!

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.

Jiang Xun was transmigrated as a cannon fodder. Her mother died when she was young, her stepmother schemes against her, and her father abandoned her in a village. But Jiang Xun didn’t panic, and she was a person who always won by virtue.

Thieves would say, “Stop hitting me, I’ll change careers!”

Thugs would say, “Stop hitting me, I’ll return the money!”

At the Jiang family banquet, guests were watching her every move, waiting for her to make a fool of herself. “I heard that she’s been living in the village for eleven years and has a country bumpkin-like feel to her. If I were the Jiang family, I wouldn’t risk her embarrassing me by letting her attend.”

Mr. Jiang said to her, “Stay behind your mother and don’t speak lest you embarrass yourself.”

Her stepmother nodded. “The Qin family’s patriarch, Qin Mufeng is noble, benevolent, and abstinent. Don’t even think about someone like him; he’s completely out of your league.”

Sure. She didn’t intend to marry into a rich family anyway. She just wanted to beat up the man in the rumors. But why was this man following her around all day every day?

Qin Xi crossed the prehistoric times, just in time for the first robbery of the Dragon and Han Dynasty!

In this era when the great Luo Jinxian is everywhere, he doesn’t know his own footsteps, so he chooses to live in seclusion and enjoy a leisurely life.

[Ding, welcome the new member ‘Honghuang Boss’ to join the dimensional chat skirt! 】

Wanhua Tongling: “What is the big boss in Honghuang, can you eat it?”

The unreliable god of ninja: “The new boss enters the skirt, the status of the skirt is reduced by one, and the front row asks…”

A girl who is always seventeen years old: “In the world of Honghuang, the newcomer is a super boss, get ready to hug your thighs in advance.”

Honghuang boss: “Well, I’m really not a Honghuang boss! Wait, my Jade Rabbit just caught a wild dragon girl and went into hiding for the time being.”

- Description from novelbuddy

My Beautiful Teacher tells the story of a university graduate Qin Chao who can’t seem to find a job and is in a downward spiral in his life. Then one night as he walks home from another failed job interview, a vase hits his head, making him get possessed by an old and powerful evil spirit sealed in that vase and following another incidents, inadvertently saved a mysterious university teacher Su Ji, thereby opening his path to cultivation, he also manages to get a job as a security guard at Guangyuan School. A series of adventures then took place as he deals with all kinds of supernatural beings.

- Description from Novelupdates