Stunning Poisonous Doctor Princess - Chapter 689 - Marriage with an Agreement

The world experienced a cataclysmic change, and countless spatial gateways appeared out of thin air.

Exotic beasts of all shapes and sizes swarmed out of those aforementioned spatial gateways, forcing the humans to face the crucial moment for their survival.

In order to search for a chance at survival, brave warriors from the army and scientific researchers risked their lives and entered the world beyond the spatial gateways. To their surprise, they discovered that there was a chance of obtaining beast cards by killing these exotic beasts in their world.

Those with extraordinary spiritual strength are able to utilize the beast cards, perhaps transforming the cards into the beasts’ combat bodies while they were still alive, or transforming them into weapons or defensive gears, or…

A new occupation came into existence following the changes, known as beastmasters.

A transcender with two souls fused into one found himself in this magnificent new world full of waves, rising step by step as he ascends into the seat of a godly beastmaster.

- Description from Novelupdates

Empires rise and fall on the Yulan Continent. Saints, immortal beings of unimaginable power, battle using spells and swords, leaving swathes of destruction in their wake. Magical beasts rule the mountains, where the brave – or the foolish – go to test their strength. Even the mighty can fall, feasted on by those stronger. The strong live like royalty; the weak strive to survive another day.

This is the world which Linley is born into. Raised in the small town of Wushan, Linley is a scion of the Baruch clan, the clan of the once-legendary Dragonblood Warriors. Their fame once shook the world, but the clan is now so decrepit that even the heirlooms of the clan have been sold off. Tasked with reclaiming the lost glory of his clan, Linley will go through countless trials and tribulations, making powerful friends but also deadly enemies.

Come witness a new legend in the making. The legend of Linley Baruch!

While a certain young man hides in a certain Ruins City, wanting to become a tanky mage through passive farming.

Mages should focus on learning more spells and magic? There is no time to invest in body strengthening? Mages are defenseless when they run out of mana? None of these are a problem for Gurney and his Passive Farming System. Through the system, Gurney trains both his body and mind at the same time, he goes beyond the limits and logic of an ordinary mage. This is a mage who casts spells while tanking hits, his recovery speed surpasses even warriors and knights. This is the journey of a vigilant and careful mage who grows tankier and tankier.

…

With the rising waves of darkness, the steampunk steel ship sets sail on a journey and adventure.

Whales sink to the depths of the sea, sirens sing with beautiful voices, calling out to the Transcendent sailors who hunt for mermaids.

The mysterious Time Hunters who obey the ancient rules search for their prey.

He who bears the title of “Hero” carries the burden of fate as he steps on the road to write a new page of history.

Ancient “Sealed Ones” rush to break out of their imprisonment, wanting to create and release new “Supernatural Memetics”.

The combination of steam technology and supernatural powers bring forth the era of “Transcendent Genetic Warriors”.

Infant dragons who have just hatched watch as the Dragon Slayer digs out their mother’s heart from her body.

Calamity level lifeforms sharpen their blades, stepping into the stage of this extraordinary era.

The tides of the era surge and swirl, bringing along the mysterious fog of darkness…

The indescribable existence nurtures and grows…

Along with the stare of the Abyss…

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.