The Orion Arm is the outermost secondary arm in the Milky Way, located between the Centaur Arm and the Perseus Arm.

For hundreds of millions of years, Orion, as a barren and barren area, has been hiding in the horns, far away from the prosperity and strife in the center of the galaxy, and living a peaceful life where birds don't.

If there are no accidents, this little spiral arm will continue to be so quiet until the next billions of years, when a lucky civilization breaks through the technological singularity and probes into the real galactic social arena to meet those middle and high-level civilizations.

Human civilization on Earth has this potential.

Despite the cruelty and tyranny of human beings, the warlike desire to kill, the inefficient use of language and sound waves in their means of communication, the slow flow of ideas in time, the weakness of the body, the low rate of education, and the fact that technological progress in most cases requires the promotion of a very small number of geniuses....

However, humanity is a war race, and as a major of the Third Reich who died tragically in London said, humans like war, annihilation, blitzkrieg, strike, and defense.

The time they spent on war occupied the vast majority of the entire history of civilization; They spent far more energy on the art of war than on artistic pursuits.

If given enough time and luck, the 7 billion human beings on the earth may really be able to turn into war frenzy, and one day they can sweep away the Liuhe with an invincible attitude like a mad dog, sweep the eight wildernesses, and let the glory of primates shine on the galaxy.

It's a pity that this possibility has been ruthlessly wiped out.

As far as the eye can see, the spiral arm of Orion, where the Earth is located, has never been so lively as it is today.

There are countless ships moored around different star systems in the Orion Spiral Arm, and these ships vary in shape, size, and aesthetic taste, and are more different from each other than humans and mice.

Chimney-shaped, cigar-shaped, flintlock-shaped, bird-shaped, sea urchin-shaped, tortoise-shaped, pyramid-shaped, kelp-shaped, animal-shaped...

The sheer variety of spaceships is dazzling and dizzying, and you can't wait to have four eyes to see the magnificent and huge ships.

These spacecraft belong to different interstellar countries, civilizations, and planets, and have completely different technological development curves and cultural backgrounds.

The extremely prosperous commercial federation, the wild and simple primitive tribes, the reckless feudal military state, the theocratic religious capital....

In the galaxy, almost all the middle and high-level civilizations that can be called by name have sent ships.

Using their respective engine technologies, they spanned thousands of light-years of distance.

The ships of some of these civilizations have even traversed almost the entire galaxy with the help of stargates (interstellar jump corridors, artificial wormholes set up by the three empires in various star regions).

If you look down at the Milky Way from above, you can see that these dense ships, like ants smelling syrup, are encircling the Earth in the spiral arms of Orion.

The ships were silently shrouded in the light of the stars, illuminated by light on one side and surrounded by darkness on the other, like tall models standing silently in the studio, waiting for the moment when the photographer pressed the shutter.

Drip.

The galaxy's public communication network (i.e., the public screen chat system between civilizations) has been refreshed with a text in red. The content is published by the Supreme Councils of the Three Empires.

"Demon Slayer Order activated."

It's just a simple line of text.

In a star field outside the solar system, Leon, who was talking to Hela, seemed to notice something, and he raised his head sharply and looked around.

"What's wrong?"

Thor, who was taken aback by Leon's sudden movements, asked with some uneasiness.

Li Ang didn't answer, he silently drove the Candle Dragon Phantom, extracting a steady stream of vacuum zero energy from the void and instilling it into his eyes.

Beyond the speed of light, Leon could see something far beyond the light cone.

Thousands of light-years away, countless starships have started stellar frog jumps at the same time.

Ships of different shapes draw energy from the stars they inhabit, open the pitch-black swirling wormholes, and then start their regular engines to enter the wormholes and jump to the vicinity of the next star.

The ships of the civilizations that had just exited the wormhole channel did not have time to renovate, so they immediately began to extract the energy of the second star, use the energy to open the second wormhole, and make another jump.

This kind of military behavior of using stellar energy, opening wormholes in a chain, and finally completing ultra-long-distance marching is called stellar frog jumping. Only those mid- to high-level civilizations in the galaxy have the technical ability to do it.

In most cases, the interstellar civilizations will rely on the stargates, that is, the interstellar jump channels belonging to the three empires.

But in wartime, the faster and more convenient stellar frog jump becomes a better option.

Because opening the wormhole consumes a huge amount of energy, the wavelength of the star's electromagnetic radiation increases - in the visible band, the spectral lines that appear to move the spectral lines of the spectrum towards the red end, which is also called a redshift.

And when the ships complete the leap, the spectrum of the stars in their journey will gradually return to their original state and will no longer redshift.

The spectral redshift effect of a single star can only be detected in advanced astronomical detection instruments, but when the number of spectral redshifts rises to 100,000 or million,

Then, the ordinary red shift will be transformed into something even more terrifying.

On the outside of Orion's arm, a red dot suddenly lit up, and soon other stars near the red dot also emitted red light.

The red dots of light shone one one after another, condensed into a red droplet, which soon turned into a stream, and soon into a river again.

Eventually, it turned into an overwhelming red tsunami.

A blood-red wave of color-changing stars surged toward the center of Orion's cantilever, toward Earth, and toward Leon. This silent but resolute terror is not in a hurry, not arrogant or impatient, like a fair girl dressed up, walking briskly little steps towards her dance partner in the center of the dance floor.

"What is this?" The Candle Dragon Phantom silently stared at the red tide, suddenly lowered his head, and asked indifferently towards Hela.

The charred body of the goddess of death suddenly tensed, she felt the terrifying pressure emanating from the dragon's body, felt the incomparably real threat of death, but there was no fear - even if she was afraid of death, it should be the other party.

"Demon Slayer Order."

Hela said calmly: "Signed by the Supreme Councils of the Three Empires, a massacre order for an individual, a civilization, a planet, or even a galaxy.

Under the order to slay demons, no life survived.

They're coming. ”