My Yandere Wives are Transcendents - Chapter 148: Mnemosyne

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.

Corrupted System Activating…Host: ZaneAge: 0/20Cultivation: NoneSkill: NoneMission: Find Missing System Parts Reward: Voice Feature and More—————Zane, once a ruthless mafia boss, met his end through poison. But when he opened his eyes again, he found himself reborn, with a broken system and a cruel fate. He had only 20 years to live.Before he could even process his situation, his beautiful sexy mother abandoned him. As if that wasn’t enough, he was thrown into the middle of a deadly desert, left to starve or be devoured by the monsters lurking beneath the sands.Abandoned, Betrayed, powerless will Zane be able to survive, uncover the truth, and reclaim what was stolen from him?—————Here are some additional tags:- Reincarnation- Corrupted System- Betrayal- Sect Building- Monsters & Beasts- Scheming MC- Overpowered Potential- Cruel World- Revenge- Beautiful Step Sister- Body Refining- Hidden Bloodline...

Jun Ye travels through worlds for unexplained reasons and is always cast in subservient roles. Unfortunately, that wasn’t his style. Let the counterattack commence!

- Description from Novelupdates

Tang Zhen transmigrated to an apocalyptic world, where humans struggled to survive in various buildings that they built because the ground was covered in lethal dangers that were invisible to the naked eye. Tang Zhen transmigrated along with his mutated cell phone that was packed with miraculous applications.

There were all kinds of cities – some could fly in the sky, some could submerge into the ocean while some could become invisible – and shocking secrets were hidden within them.

The power of Tang Zhen’s city was…

He established a city and quickly leveled up his army with speeding tools. Then, he dominated this alternate world by seizing other cities.

He sat at the very top. Beneath his feet was a vast floating city guarded by dragons and surrounded by angels. Countless cannons were also set up at various corners of the city.

A million miles ahead, in the depths of the ocean, there was another city as large as a continent awaiting his conquest.