These Demons Do it for Free - Chapter 80

The Supernatural era descended, the rules changed, mystery arrived, and the world altered. Countless ruins of civilization emerged, and an abundance of Heavenly Materials and Earthly Treasures lay at everyone’s fingertips. Radical faction, “This is the best of times, entering a new world, excavating relics, mass evolution!” Conservative, “This is the worst of times, with countless monsters outside, once you leave the Safe Zone, extinction awaits humanity!” … Meanwhile, at a remote ruin, Lu Yuan successfully discovered new treasures and sought after the mysterious wealth, desperately trying to contact his fellow Earthlings. “Found a communicator, can it get through?” “Hey, humans—I’m almost becoming a god, and you’re still hiding in the Safe Zone?”

This novel is also known as From The Start, I Traded A Galactic Warship

After getting a trading platform three thousand years later, everything in the world has become an antique, worth a thousand gold.

But it was also learned that three years later, aliens invaded, human beings fell, and the dark starry era began.

In this era of unprecedented change in tens of thousands of years.

Shen Shi decided.

First trade a space battleship, and then talk about it.

then–

Battleships come to the world from outer space! Global shock! Starry Sky Era, open in advance!

- Description from novelbuddy

After successfully graduating with a master's degree and passing the civil service exam, Chen Ying returns to his hometown's Forestry Bureau to become a wildlife rescuer.He thought his daily work would just involve saving animals and petting all sorts of furry creatures, but ever since he saved a leopard and her two cubs, his life has become incredibly busy.No one told him that the leopard's best friend was a giant panda!And that giant panda was pregnant with twins and couldn't eat bamboo because of inflamed gums.Chen Ying had to call a dentist in the middle of the night to help the pregnant panda with dental fillings and cleaning, also providing a prenatal examination.After that day, word spread among the animals in the mountains that a bipedal vet had arrived who could solve all kinds of ailments!Hold on, being single isn't a sickness and can't be cured!What's that, you wish to arrange a meeting with domesticated animals to fix your single status? Well, that might be worth considering.Unbeknownst to Chen Ying, the animal community throughout the country came to know that the bipedal vet from the Apmu Township rescue station could help solve the problem of being single.Seriously, can't we keep this on the down-low? He's a vet, not a matchmaker!

This story is centered around the man named Yi Ji-Hyuk, who has spent 1000 years in a Medieval Western fantasy-like world before returning back to the modern-day Earth. When he returns, he finds that his home is facing monster threats, and that humans with superpowers have appeared to protect the innocent people of Earth.