Therefore, it is impossible for a person who is firmly grasped by a zombie to escape the blood of the zombie unless you can surpass 100% of the strength or break the zombie's arm.

Then there is vision, the eyes of zombies have mutated, and in addition to normal vision, they also possess the ability of infrared vision, which can distinguish between homeothermic animals and cold-blooded animals.

Even if a cold-blooded animal exercises a lot, the heat consumption generated during the exercise will inevitably make its body temperature different from the temperature of external objects.

And it just so happens that the zombie is cold-blooded than a cold-blooded animal, it is a walking corpse, and no matter how much exercise it takes, its body temperature will not rise in the slightest.

So in their world, as long as it's orange, it's their food.

Hearing is similar to that of humans, and the basic range of their hearing is comparable to that of humans, with no particular prominence.

Unlike the sense of smell and hearing, zombies have a more acute sense of smell, and they can distinguish the smell of flesh and blood in any environment, and the range in the open area increases with the level of zombies, ranging from tens of meters to hundreds of meters.

And in one particular case, the range of this sensitive sense of smell can increase tenfold, and that is blood.

Their sense of smell is like that of sharks, and when blood is exposed to the air, this smell of blood will be detected by zombies hundreds of kilometers away, and the smell of blood is food for zombies.

So as soon as you smell blood, zombies will fall into the same madness as sharks.

For example, the third-level zombie, the original sense of smell sensitivity is about a few tens of meters, but the sensitivity to blood is hundreds of meters, and even under the idealized wind situation, the third-level zombie can even detect the smell of blood within a kilometer.

This is only a third-level zombie, the higher the level of the zombie, the farther the range of induction, and even a seventh-level zombie can smell the smell of blood from a hundred kilometers away.

This is also why when the end of the world comes out, when humans are bitten, a large number of zombies will frantically pounce on them until there is nothing left.

Of course, this is all in the open area, and if you put the blood in an airtight container, even the zombies will not be able to smell it!

But even so, the zombie's sense of smell is very perverted. It is also based on the sense of smell of zombies, as long as it is a gathering place of humans, it may attract the attack of corpse tides.

No way, the bigger the gathering place of human beings, the stronger the smell of blood produced every day, for example, women always have a day of great aunt, right?

For example, there are always people in the base who are injured, right?

For example, the base always slaughters evolved beasts for food, right?

These are unavoidable, we can only try to avoid them, to circumvent them, but we can't completely shield them.

All these kinds of bloody smells converge together, making the entire base in the olfactory world of zombies, which is a piece of fragrant food.

And when there are more people in the base, the stronger the smell of blood, and the greater the number of corpses attracted.

Everyone knows this, and everyone knows that if you stay in a small base, you may not experience too much of a zombie wave.

But most of them are still desperately squeezing into the large base, the bigger the better, are they all stupid? Of course not.

Because although the small base will not attract too much corpse tide, the small base also has no strength, and there is no material to build a city wall extravagantly, which is equally dangerous in the face of a small corpse tide.

Large bases are different, with tall walls, numerous evolutionaries, and a large number of defensive weapons, all of which make each large base armed to the teeth.

Even in the face of a large tide of corpses, they are confident that they will survive.

So all people have two choices, just like brand machines and copycat machines, brand machines are of good quality, but the price is high. The quality of the copycat machine is a little worse, but the price is low.

They also choose small and medium-sized bases that do not have many defenses, but have low housing prices and attract a small tide of corpses.

Either choose a surprisingly large or super-large base with good defensive measures, but the housing prices are ridiculously high, and the corpse tide is also large.

Generally speaking, the average level of evolutionaries in small and medium-sized bases is much worse than that of large bases and super-large bases, and there is no way, people go to higher places, and when their strength reaches a certain level, they like to go to safer large bases.

This is just like before the end of the world, when you don't have money, you can only use copycat machines, and when you have money, you can buy brand machines. If you don't have the money to buy a brand machine, that's stupid.

But if the news of the battle in the sky city spreads, all evolutionaries will know that the best option has appeared, and that is the city in the sky.

Sky City has been saying from the very beginning to the present that only one million identification certificates will be issued, which means that the population is only one million when it is full, which is equivalent to a relatively large medium-sized base.

According to this scale, if it were not deliberately bad, or if the luck was not so bad that he would have stuffed his teeth with cold water and smashed his heels with fart, he would not have attracted more than two or three million corpses.

And a corpse tide of this scale is not too much of a problem for Sky City, which has already shown some strength today, right?

And even if you're unlucky, if you accidentally encounter a very large tide of corpses, it shouldn't be a problem, right?

Didn't they say it at the time? The reason why the castle in the sky is called the castle in the sky is that it can fly.

Why is it that such an expensive rent is even higher than the housing prices in the capital base? Still renting or selling? Doesn't it mean that in order to have enough energy to lift off in the most critical moment?

Before, these evolutionaries still didn't believe it, TMD, tell me how to fly in such a big city?

But now they really believe it, because what?

A super-large base as big as the capital base, with many elites, what is the highest achievement now, laser guns and electromagnetic guns, but these two large killing weapons can only kill seventh-level evolution beasts!

And the city in the sky can do the same, although the weapons are different, but I believe that in terms of research, it will not be worse than the capital base.

And the most important thing is that Sky City is a unique metal structure, and some evolutionaries even secretly tried it, and with the strength of his fifth-level evolutionary, he couldn't leave a trace of scars on this metal material.

It is conceivable how tough this metal material is, and it can be imagined that even if there is a large number of corpses, even if the city in the sky cannot fly, its defense power is the first among all bases.

So the first thing these people did after they reacted was to stay in Sky City. [.]