Longevity Strange Immortal - Chapter 205 - 65: The Port Needs the Qinghong Flower Tower

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.

It’s the vacation of a lifetime, a trip to a remote island filled with geniuses and murder.

A world where mana density was extremely abundant. Because of that, the world connected to a special place through an ancient gate—the World of Beasts. Through this connection with beasts, mankind became superhuman, wielding power capable of tearing apart sky and ground.However, too much of anything is never a good thing. Countless dungeons appeared across the rifts… and demons.Rocky Stephens, the first son of a Great Clan, the reincarnator, carrying memories from another world.… yet also a useless piece of trash. No one even remembered his name. His parents died. Betrayed by the branch clan, his beast was killed. He lived in a phase he had never dreamed of—a nightmare.When a second chance came, he returned to the World of Beasts… and awakened a system that could see through all Beasts’ training paths!With the system, his beast could level up like the wind… it could learn and upgrade its skills on its own, and even more.

Du Jiuyuan lay in a grave of love for three years. Finally, her heart was as dead as ashes, she gave up on finding love and decided to go down a career path of a strong woman. But what was going on with her ex-husband? He used to be someone whom she would only see once every four to five months. Why was he appearing in front of her now and then? When she talked to others about collaboration, he would coax her from behind. “Yuan Yuan, this person is unreliable. Let me invest in her for you, okay?”

When she got into conflict with others, he would support her from behind. “Yuan Yuan, don’t be afraid. Your husband is Ji Jinchen. Don’t worry about her.” Du Jiuyuan was speechless. “…” Please take note that it was her ex-husband who divorced her. One day, when a male colleague sent her home after a meal, she was seen by Ji Jinchen. The man blocked her at the foot of the wall and questioned her in a low voice. “Don’t be with others, otherwise… I will lose my mind.

Later, Du Jiuyuan rose to the top of her career and attracted countless suitors. One such suitor gave her a bouquet of roses and the next day, her office became a sea of flowers. Some suitors gave her desserts that could only be bought after queuing up. The day after that, her office would be flooded with desserts. Some suitors gave her a pet… Du Jiuyuan went crazy. “Ji Jinchen, if you dare to give me a house full of pets, I will fight it out with you!”

Ji Jinchen said, “Jiuyuan, forgive me for being stupid and not seeing your grievances, but you have to believe that from the moment I married you, I never thought of getting a divorce. Du Jiuyuan: I thought that the man I loved for seven years was a stone that couldn’t be covered up, but then I realized what kind of fiery heart was hidden in this stone.”