"What is this?"

Stuck in the saber was an irregularly shaped, gray gelatinous object.

It's not big, about a lap less than an egg, but its surface is strangely not stained with any yellowish corpse fluid, and it remains in a gray gelatinous state. It's just that, judging by its shape, it's impossible to tell what it is.

Li Jian reached out and touched this strange thing, because he had transformed into a zombie, he had lost most of his touch, but still by the degree of depression on the surface of the thing, it could be seen that this thing was very soft, or more sticky.

It's not that Li Jian hasn't dissected zombies, and since he felt that every time he killed a zombie, something unknown flowed into his body, he tried to dissect the zombie's head to see what was inside. And it's also called studying the weakness of zombies, after all, why is it that if you get a headshot, the zombie will stop moving, which is equivalent to dying, which is also a research topic and can be recorded in his zombie notes.

But he swore that although he had only dissected the heads of a limited number of zombies, he had never seen such a thing in them, so he couldn't figure out why headshots were the only way to deal with zombies. It's like it came out of nowhere.

Maybe it's luck, or maybe it's something else, after killing a zombie, another zombie happens to hang out here.

This zombie, judging from its tattered clothes and body shape, should have been a woman before her death, but she was still an old, mother-in-law-level woman.

In Li Jian's zombie notes, it is recorded that whether it is an adult or a child, a young man or an old man, a man or a woman, after becoming a zombie, they are no different. The main head weakness, speed, strength, etc. are basically the same, and they will not change because of the state before death, at most there is a difference in body shape.

This zombie was not attracted by Li Jian, and on the premise of transforming into a zombie, Li Jian killed the zombie, which would not attract the attention of other zombies. This can be said to be the most satisfying thing about Li Jian's ability.

But once he touches a zombie, and it's a zombie that hasn't been killed by a headshot, then there will be a terrible scene like before, where all the zombies in the vicinity notice him at the same time and directly chase him as the highest priority target with a hatred level of 10.

Therefore, under normal circumstances, even if Li Jian transforms into a zombie, he will only kill if he is sure of killing. After all, the less scratching it can cause, the better.

When the old woman zombie swayed in front of him, he turned sideways, first wiped off the gray gelatinous thing stuck in the saber, and then stretched out his right arm and accurately inserted it into the center of the old woman zombie's forehead.

At the moment when the saber was inserted, the old woman zombie suddenly stopped moving, and was simply killed by Li Jian.

Li Jian pulled out the saber, just like just now, when the saber was drawn, it brought out a large amount of zombie rotting flesh and blood, as well as yellowish corpse fluid, and on the saber, there was also an almost identical gray gelatinous thing, but the size was slightly different.

In addition to these, Li Jian also deliberately paid attention to the changes when he killed the old woman zombie just now.

He found that it seemed that when he killed the old woman zombie, he felt a little different. To be precise, when he plunged the saber into the zombie's head, he felt a slight resistance. This slight resistance was not there before, in the past, because of the high penetration of the zombie's rotting flesh, the knife insertion was extremely smooth, almost as if sliding in. But just now, when he killed the old woman's zombie, he had to use a little force, and then he inserted the entire saber into it completely.

Moreover, in addition to this difference, he felt that this time when he killed the old woman zombie, the unknown things that flowed into his body through the saber seemed to be a little more than before. He couldn't say what it was, it was liquid, or even nothing, but he could feel it.

Two zombies in a row, such a gray gelatinous thing appeared in their brains, and it was impossible not to attract Li Jian's attention.

Looking down at his watch, he had about ten minutes to go before he had to turn back into human form. Li Jian looked around, and next to his residential building, there were about 20 zombies roaming, and most of them were scattered, which happened to be his testing ground.

"Kill a few more and see what the hell is going on"

Li Jian muttered, stretched his left arm back, pulled out a sharp knife that he had been using before, and walked forward quickly to begin his experiment.

And the results of these experiments will be recorded in his zombie notes, which will become another weapon for him to deal with zombies.

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One o'clock in the afternoon.

After taking a nice shower with clean tap water, Li Jian walked out of the bathroom. When I walked to the living room on the first floor, I picked up a cup of freshly connected tap water on the table, poured a few sips, and slumped on the sofa.

In front of him, on the newspaper, were six gray gelatinous things.

Just now, Li Jian quickly killed four zombies, and even the last zombie, Li Jian first cut off its entire head and stopped the zombies' movements, and then dug out a complete gray gelatinous thing in its brain.

Just as the weakness of zombies is in the head, their control center seems to be in the head, so as long as their head is separated from their body, they can stop the zombie's activities, which is also recorded in Li Jian's zombie notes.

Now, Li Jian has obtained, five gray gelatinous things that have been inserted by sabers, and one complete gelatinous thing. Although these gelatinous things are different in shape and size, under the light of the day, it can be seen that they are clean and immaculate, without the slightest impurity, and all of them are crystal clear.

"These gray gelatinous things, if I guess correctly, should be the weakness of zombies"

Li Jian muttered to himself.

When killing the last zombie, Li Jian directly dug out the gelatinous stuff in its brain, and the only remaining head of the zombie also stopped moving, and it couldn't die anymore. This means that this gray gelatinous thing is the core of them.

"Or, I should call these things corpse cores, which are the core of zombies. But why didn't the zombies I killed before have this nucleus in their heads? Is it just right? Or is this something that has only recently appeared"

Li Jian is not a professional scientist, let alone a highly skilled researcher, he can only make hypotheses based on what he has seen and what he has personally tested, and add them to his zombie notes.

This belongs to him alone, and his understanding of zombies is also one of the capitals for him to settle down in this last days.

Just as he was thinking about the nucleus, there was a sudden sound from far away.

Although this sound was still faint, Li Jian could still hear it very clearly in this silent environment.

"Gunshots"

Li Jian turned over and rushed up to the second floor in three steps and two steps.

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