The Emperor Wants To Marry The Doctor - Chapter 1: Rebirth

Somebody once told a joke.A man ran in place all his life. He worked a job he didn't love for people he couldn't stand. But at the end of the day, the number in his bank account went up.That man got a second chance at life. He woke up in another world, full of adventures and romances and monsters and gods. And floating above his head he saw the number “1”. So what did he say?“Gosh I better make the number go up.”Not today. Not for this old soul. Reborn as a beast of battle meant to live a short life and die screaming, Garek refuses. He puts the madness of skills and levels behind him and sets out to found a little farmstead. He grows crops. Maybe someday he'll get a pig, and have bacon.It's a shame the world won't let him be. It's a shame that the warmongers and level-grinders hate nothing more than a soul at peace.He put down his sword for a plowshare, but when trouble comes calling, he'll pick it up again.

Rimu Dynasty, Kingdom of chaos. Demons were rampant, and it was difficult for people to live.

Gu Qing’an had not yet had the opportunity to appreciate his beauty upon transmigrating in this world, as he had to face the demon who targeted and devoured humans.

Fortunately, she had a system.

“I, Gu Qingan, have never been weaker than others. System, add it to me.”

……

Many years later, Gu Qing’an, standing on the frozen void, looked at the newly discovered strange world under her feet without any expression.

“Compared to human beings, alien existence is a demon,” she thought to herself.

“Then, are all creatures in this entire world considered demons?”

- 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.

Su Ying, a major general of the armored army of the last days, traveled through time, to the body of a scumbag who colluded with a scumbag to murder her husband. She was exiled as soon as she came, and she also gave her two children and a disabled husband who killed her every minute.

Small injury, big disability, Su Ying waved his hand, it’s not a problem.

On the way to exile, I didn’t eat or drink and was hunted down, so I was sprinkled with water.

With the material and space in hand, she has meat in her left hand and wine in her right hand. The assassins come one by one, and two kill one pair.

Treat the disabled husband well, raise a fat and cute baby, build mountains and houses on the wasteland, farm around the land, establish your own civilization and kingdom, and be your own queen.

After curing the illness of the disabled husband and letting him go back to Shangjing to clean up his grievances and regain everything that belongs to him, Su Ying and Li Shu dumped it on the table.

A certain king gritted his teeth and blocked others: Su Ying, you dare to leave and try!

The two cute babies rushed to hug Su Ying’s legs, “Mother, don’t you want your baby?”

Su Ying raised her forehead, well, then take it all!

- Description from novelbuddy