According to the uncertainty principle of quantum physics, the existence of quantum states itself is in a fuzzy state, just like the wave-particle duality of light, and only in the presence of an observer will the state collapse in reality and return to a deterministic state.

Schrödinger, a famous quantum physicist, once proposed a hypothesis about cats, that is, it is assumed that there is a cat in a box containing a small amount of radium and highly toxic cyanide, and there is a chance of decay of radium.

If the radium decays, it triggers a trap to smash the bottle containing cyanide and poison the cat, and if the radium does not decay, the cat can continue to live.

According to the theory of quantum mechanics, since radioactive radium is in the superposition of decay and non-decay, the cat should also be in the superposition of dead and living cats, that is, the cat is dead and alive.

And when an observer opens the box and observes the cat's state of existence, the cat's quantum superposition will immediately collapse into a state of death or survival.

When the observer is not there, the cat is a dead and alive "ghost".

Liu Cixin, a famous writer in China, once put forward a conjecture in his own book, that is, by using the weapon of quantum state to destroy an army with strong willpower, you can get a group of quantum troops like ghosts.

When the observer is not present, this unit can pass through any obstacle without being harmed by anything, and even go directly into the heart of the enemy to deliver a fatal blow.

Shen Feng had studied the feasibility of quantum weapons with Jingwei before, but because he really didn't have much time to engage in specialized research, he stopped at a shallow taste.

Everything that is happening in front of their eyes now is completely the existence of a hypothetical quantum ghost!

According to the description in the epic, the Bloody Kraken had already been annihilated in a certain battle, completely disappeared, was able to appear here, and also disturbed the surrounding sea water, and suddenly disappeared after encountering Shen Feng and others, obviously in a quantum state.

According to the information he got before, Shen Feng originally thought that before this world was flooded, it was already very remarkable that the scientific and technological level of human beings could reach controllable nuclear fusion, but he didn't expect that even such a thing as a quantum weapon would be obtained.

It's just that even with quantum weapons, human civilization still fails, how powerful are those world beasts? Where did it come from?

With doubts in his heart, the Hope Sail Battleship had broken through the layers of sea fog and arrived at the place where the Bloody Kraken and the World Beast had appeared just now.

There was nothing but the fading raging waves.

The Hope's sail battleship found nothing after a few turns, not to mention the super giant war armor, not even a single fish was seen.

When Shen Feng was disappointed, a melodious whistle suddenly sounded from the sea fog in the distance, and even a roar came from the sky, which seemed to be the sound of a fighter plane breaking through the air.

Shen Feng immediately ordered to chase in the direction where the voice came from.

Soon, everyone faintly saw the silhouette and shadow of a battleship flashing in the dense fog in the distance, and there were faint warplanes in the sky through the fog.

It's just that then these warships and warplanes became too shadowy, and they disappeared completely, no longer appearing.

Shen Feng frowned, understanding that if his inference was correct, this battleship and this fighter also belonged to the existence of a quantum state.

Unable to find anything here, the Sail Battleship reactivated, continuing its voyage through the fog under Cherry's guidance.

After experiencing the bloody Kraken fighting the World Beast just now, Cherry, who had been deeply hypnotized, was even more excited at this time, muttering something "everything will be purified", and began to carefully look for a way to the Purification Church.

In his hand, the annunciator also flashed more frequently, and the red light on it seemed to be an eye, glowing in the thick fog.

The more you move forward, the more "ghosts" and "ghosts" that keep appearing.

Wrecked aircraft carriers, warplanes falling from the sky, tentacles of the beasts of the world floating on the sea, blah blah blah, and even apparitions of islands, and the voices of humans struggling and crying in the sea.

It's just that without exception, when these things are observed, they quickly disappear without a trace, as if they never existed.

Shen Feng's brows tightened, and he basically understood what the hell this place was.

This sea area is an ancient battlefield, and there have been extremely tragic battles.

Moreover, it should be the use of quantum weapons by a certain party that has affected a large area of the sea that has caused the current situation.

The reason why it is said to be "a certain party" is because Shen Feng is also a little unsure now, what is the situation of this quantum weapon.

After all, the quantum state that appeared in front of us existed, there were human weapons and warriors, and there were also the remains of some world beasts.

Seeing that the captain was very calm and did not react much, the crew could only temporarily put their hearts in their stomachs at this time and follow the captain forward.

After all, those ghosts, as scary as they looked, didn't hurt them.

And everyone also thinks that those ghosts are the heroic spirits of ancient heroes, and naturally they will not harm them who are also human beings.

However, Wu Ta tried to figure out what a "quantum ghost" was from Shen Feng's mouth several times, but after listening to Shen Feng's explanation a few times, he still couldn't understand the essentials, so he could only give up for the time being.

Shen Feng also understands this.

Although quantum physics can barely be explained in plain language, it is also based on the premise that the audience has a higher education foundation.

Although the knowledge mastered by Wu Ta is already considered top in the apocalyptic world of the water world, the gold content may not be as good as that of a high school student in the past.

If you want to understand quantum physics in this way, it is tantamount to a castle in the air, and it is basically impossible.

However, Cherry's expression became more and more excited at this time, clutching the signal detector in his hand tightly, leaning out half of his body to look at the dense fog in front of him, excited.

The lights on the signal detector are flickering, and they are getting faster and faster, almost becoming continuously bright!

"Level 1 combat readiness, all weapon systems are fully turned on and ready to fire at any time." Shen Feng quietly ordered.

The various artillery and machine guns on the entire sail battleship immediately entered the combat state, and the sailors, who had been hastily trained for several days, were sitting on the gun positions in a nervous mood at this time, not understanding why the captain gave this order.

At this moment, the signal detector in Cherry's hand flashed suddenly, and then the red light became bright for a long time, no longer flashing.

In the next instant, the sail battleship crashed through the thick fog in front of it and appeared on the open sea.

Colorful colors greeted the face, all kinds of brilliant light instantly reflected on the whole ship, in front of everyone, there was a small island like a fairyland, the glow on it flickered, a gorgeous building rose to the sky, and the soft golden light, as if it was heaven!