Primordial Ancient Serpent - Chapter 9 - : Chaos Orb

Gu Qingli, a modern-day doctor and poisoner, was killed by her best friend. She was reborn as a weak peasant girl who could easily be bullied. Not long after she returned home, her wedding was called off. Everyone in the village started speaking poorly about her. A greedy matchmaker showed up and tried to convince Qingli to marry an older man! The matchmaker had barely been gone for a few seconds before returning once again. It seemed that Xiao Laosan, a man from the same village who was famous for bringing bad luck to his partner, wanted Qingli as his wife. The matchmaker wondered why a wretched woman like her was so popular. Gu Qingli did not mind. She thought that she, a wretched woman, was a perfect match for this man. For the days to come, she'd take her younger brother with her to forage for herbs, and they'd stir up trouble when they got bored. Wretched woman? A failed investment? Those things had nothing to do with her!

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 this school fantasy story set in the distant future, creatures contaminated by pollution have overtaken the land, forcing humanity to live in isolated mobile cities called Regios. One such city named Zuellni is a self-contained school in which freshman Layfon Alseif has just enrolled. Layfon reluctantly joins the 17th Military Arts Platoon led by the third-year student Nina Antalk and embarks on a series of adventures.

Rebirth is not a guarantee of successful revenge or a good life. After being reborn, she still faced death in campus violence. However, the spirit of the nine-tailed fox from thousands of years ago awoke within her body. From then on, those who bullied her would pay tenfold, and those who insulted her would come to a bad end!She was once called a pig, so she lost weight and dazzled everyone, proving that every fatty has potential to become a beauty!Her grades were terrible before, but she studied hard and became the top student, showing everyone the intelligence gap between her and others.She became the national pride as a master archer, never missing a single target.Her acting skills were so excellent that they set the standard in showbiz.She was the trendsetter in fashion, winning countless fans with just her face.It is said that he is mysterious and indifferent to women. After receiving many handsome photos of herself from him, she thought: He is just as shameless as he was in his previous life! He always teases her! But, she has to admit, she likes it!