Rewind System: Vampire Harem In The Apocalypse - 17 Chapter 17

Power and desire, money and strength, conscience and responsibility, the road ahead is at a loss, as a time traveler, Simon, where will he go, this is a leading mainstream novel with a relaxed daily life and a slow pace

- Description from novelbuddy

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.

[Fireworks in the world are the most soothing to the hearts of mortals!]

“There is no temple at the age of eighty-two,”

“Sixty-nine years of worry.”

“The world is hard,”

“Long life is not easy.”

“Yin and Yang are reversed in a dream, and in the next life… I beg!”

【Name】: Lu Chen

[Identity]: Master of Changchun Temple

【Repair】: None

[Cultivation method]: Immortal Changchun Kung Fu (can be upgraded!) +

[Spell]: Control swordsmanship (upgrade conditions can be expanded!)

“Expand!”

“upgrade!”

……………………………..

PS: Upgrade, relax, cultivate immortals, demons, ghosts…

- Description from novelbuddy

Inside the 3000m underwater station, an international group of scientists and engineers live and research for possible settlement of entire human race. Park Mu-hyun, a reserved dentist joins the station in hopes for a quaint life in the deep sea. However, things quickly go south when the station gets attacked by a mysterious group of people.As the water starts to fill in the living quarters, Park Mu-hyun grabs his backpack and immediately runs for his life, but where to? Now, the peaceful station becomes the ultimate survival stage of cult madness and chaos.