Terror Infinity - Vol 23 Chapter 23-4: Gather for the Final Battle!(IV)

Jian Rushi, born in a rich family, was a college girl. Due to some economic reasons, her family went broke. Her father committed suicide under great pressure, while her mother ran away with someone else, leaving her alone in this world. As she tried to find some comfort from her boyfriend, she found that her boyfriend cheated on her. Feeling devastated, Jian Rushi thought of ending her life. But she wanted to do a crazy thing before that. Suddenly she remembered she was still virgin. So she decided to sleep with a man before she died. She went to a pub one day and saw a pretty man drinking there alone. She mistook him as a money boy and took him home. After they slept, she had no money to pay him. As the compensation, Jian Rushi became the mistress of that man, who turned out to be a golden bachelor. And a series of embarrassing things happened…

- Description from Novelupdates

A polite and lethargic boy was reincarnated in another world as a vampire bishoujo.

Zhang Ruo Chen was the sole male heir of one of the nine emperors of the Kunlun Field. Ruo Chen’s father was known to all as the “Enlightened Emperor”, however Ruo Chen didn’t just leech off his status as emperor’s son. He proved himself to be a dragon amongst men, possessing a heaven defying body, and managing to cultivate to Greater Perfection within the Yellow Horizon Realm, at just the young age of 16.

But even though he stood at the summit of the younger generation and had a boundless future, he sadly died at the treacherous hands of his own fiancee at a young age.

Reincarnated 800 years later in the body of a young boy who shares his name, he found out his former fiancee already unified Kunlun’s Field and built the First Central Empire, and was now known as Empress Chi Yao… Empress Chi Yao—Her Majesty governed the mortal world and enjoyed prestige in all directions as well as an eternal life.

Zhang Ruochen stood outside of the Imperial Ancestral Temple, looking at the statue of Empress Chi Yao, and the flames of hatred burned in his heart. “After I practice for 13 years, I shall send the empress to her doom!”

- 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.