Although the octopus's vitality is as high as 7.2, the skin on its head still barely shows any defensive power in the face of the invisible sword qi.

The sword qi pierced straight in.

Wu Yi approached quickly, constantly stirring the metal spear.

As the distance closed, the destructive power of the invisible sword qi became more and more powerful, and the sword qi collided back and forth in the soft brain tissue of the octopus, stirring it to pieces.

"Gurgling ......"

The sound of brain tissue being scratched and shaking in the soft scalp sac sounded.

As long as an animal has a brain, the brain is its lifeline, and after being hit by Wu Yi like this, the octopus suddenly lost its combat effectiveness.

The octopus had no chance to show any of its abilities in front of Wu Yi, but it was just a convulsion, and the tentacles that were dancing wildly just now seemed to have been hit by electricity, and they instantly became weak.

Although the old woman zombie entangled in the octopus tentacles was also free from the tentacles at this time, its position was in the air outside the balcony.

Without the pull of the tentacles, it made it fall directly to the ground.

"Meow!

When the little gray cat saw his master fall off the balcony, he screamed, and immediately rushed out of the balcony without hesitation, jumped up, and followed his own master!

The invisible sword aura extending from the metal spear was still stirring in the octopus's head.

Because Wu Yi's eyes could still see the golden light representing life force appear on the octopus's head.

If the golden light does not disappear, it means that the octopus is not dead, and there is still the possibility of counterattack.

Wu Yi manipulated the sword qi to move towards the location of the golden light.

At this time, the golden light was extinguished.

"Huh?"

Wu Yi suddenly felt the touch of warm flowing water that he had obtained from absorbing zombie crystals when he was in Mocheng.

He knew that this meant that he was absorbing the crystals in the octopus's body.

The position of the golden light is the same as the position of the crystal, for example, the zombie's is in the center of its forehead, and the same is true for humans.

Seeing this, a small question that had been lingering in Wu Yi's heart was also answered.

When he was in Mocheng, Wu Yi found that all the zombies killed by his melee would be automatically absorbed by him, and only those who attacked from a distance would be retained.

Now it seems that it should be a good thing done by the invisible sword qi.

Although he didn't know how to stimulate the Invisible Sword Qi at that time, perhaps the Invisible Sword Qi was already silently playing a role in some way at that time.

It is very likely that the weapon he uses will automatically attach an invisible sword qi to it, and the moment he kills the zombie, the crystals will be quickly absorbed by him with flesh and blood and sword qi as a link.

"Perhaps, this is also one of the reasons why the invisible sword qi makes the people of later generations so afraid." Wu Yi thought.

At the beginning of the apocalypse, when everyone was confused, people with invisible sword qi didn't need to take out crystals from them to absorb them like others, after killing zombies and mutant animals.

In the treacherous and changeable environment of the last days, it is dangerous to stay outside for a little more.

In the face of a crisis, having to throw away the spoils of hard work should be a fairly common scenario in later generations.

Therefore, the owner of the Invisible Sword Qi would have a huge advantage at the beginning.

The sensation was rapidly spreading along the barrel of the gun, from his hands to his body.

After a few seconds, the warmth dissipates.

Wu Yi subconsciously looked at his arm, and the golden light representing his vitality flashed.

“12.127。”

He still remembered that the last time he absorbed the crystal nucleus of the mutated zombie in Mocheng, his vitality was 12.007.

In other words, this octopus, which has a life force of 7.2, only contributes 0.12 life force growth to him.

Compared with the mutated zombie in Mocheng, it is too inferior.

Although Wu Yi didn't know what the vitality of the mutated zombie was, according to common sense, it shouldn't be too high than the octopus in front of him.

After all, the octopus appeared more than ten days later than the mutant zombie.

In the past ten days, there have been many changes in the early days of the apocalypse.

And at that time, his combat power was not as good as now, and he threw away some small obstacles in the middle, and when he directly killed the mutant zombies, he didn't fight hard, but also killed with one hit.

Therefore, that mutant zombie can only be weaker than the octopus in front of it.

But the amount of vitality that the mutant zombie brought him was six or seven times as much as that of an octopus.

It's a pity that he couldn't get more information from Cao Potian.

He could only guess that the species differences between octopuses and humans were too great, causing the human body to reject the energy absorption of their crystals.

Just like blood transfusions, even though the so-called blood type O is a universal blood, the blood that has the least reaction is the blood type of the recipient.

Of course, this is all Wu Yi's assumption.

If you want to know if it is realistic, you can only find out by doing more experiments.

Wu Yi withdrew the invisible sword qi attached to the metal spear, and the octopus's body immediately slipped from the balcony.

"Bang!"

A muffled sound soon came from downstairs.

Wu Yi glanced at the severed octopus tentacles on the carpet, as well as the fish corpses in the room.

Just looking at the quality of the meat, it is no different from ordinary octopus and marine fish, but it is much larger.

Naturally, this meat is also edible.

In later days, mutated animal meat would become a fairly important source of food for humans.

In addition, a certain ingredient in mutated animal meat can also subtly increase the vitality of human beings, allowing more ordinary people to become supernatural.

Wu Yi suddenly thought of the information he got from interrogating Cao Potian.

In the future, one direction of biological variation will be to become larger.

Before the advent of humans, there was a time when the earth was full of giant creatures.

At that time, any insect could grow to a length of one or two meters, and the animals in the sea were even more amazing, with animals hundreds of meters long abounding.

One thing that the giant creatures lived in in common was that the proportion of oxygen in the air was much higher than it is today.

Only a high oxygen concentration can support the huge body size.

In the future, not only animals but also plants will mutate.

Therefore, it should be that plants produce more oxygen after mutation, so that animals have a tendency to evolve in this direction.

Wu Yi walked to the balcony and looked downstairs.

"Huh?"

It was in these few short minutes that a few wisps of white mist rose on the ground.

Wu Yi searched around, and sure enough, he found a ravine that appeared out of thin air not far away.

"No wonder there are zombies, it turns out that the hell ravines have appeared."

The appearance of zombies is directly related to the white mist floating from the ravines of hell.

Whenever the white mist appears, zombies will spawn with it.

At this time, Wu Yi looked in the direction of the Oriental Pig.

The dark clouds in the sky behind the Eastern Pig were as low as ever, and the bottom of the clouds was almost pressing down on the spire.

The speed at which the clouds rolled was extremely fast, as if the playback speed had been turned up more than ten times faster.

"Is it finally out?" Wu Yi clenched his spear.

I saw that in the dark clouds, a metallic luster was revealed.