After a little rest, Chen Dong used a steel gun to pick up the zombie lying on the anti-theft window, unscrewed the screws, and Chen Dong removed the anti-theft window. The zombie was lying at the door of the eighth floor with scars on his face, Chen Dong was too lazy to take a look, he picked up the steel gun and hammer, walked to the kitchen faucet, and rinsed the zombie brains and black liquid on it.

In the past few days, except for that cauliflower steamed bun, Chen Dong has not eaten a full meal, and his physical strength has not fully recovered. After tossing for a long time today and killing two zombies, Chen Dong's physical strength has been exhausted a lot, and the crisis has been initially lifted, and his nervous state of mind has also relaxed slightly, and a feeling of fatigue suddenly surged up all over his body.

Carrying the rinsed steel gun and hand hammer, Chen Dong picked up the electric drill again and went down the stairs, wanting to go back to his house on the second floor first. Because he was wearing a winter cotton coat, Chen Dong was very active and sweated a lot, he was feeling a little thirsty, he thought, wait a while, drink a few sips of water, take a little rest, and then open the security doors of other residents in this unit building.

When passing by the fifth floor, the howl of zombies sounded in the door of the household on the fifth floor, Chen Dong glanced at the security door vigilantly, the security door was not opened from the inside, the zombies on the eighth floor will open the door, and the zombies in this household will indeed not open the door.

Chen Dong thought, maybe zombies and zombies are not the same, some zombies are smarter and will open the door by themselves, and some zombies only have instinct. However, when Chen Dong killed zombies on the eighth floor, he really didn't feel that the zombie was a little smart, and the zombie's IQ was about zero, which was really stupid.

Maybe it was a coincidence that the zombie opened the door, and the zombie on the eighth floor might just accidentally touch the doorknob and happened to open the door, Chen Dong comforted himself like this in his heart. He doesn't want zombies to be smart, the IQ of zombies now is basically to deliver food, when Chen Dong pokes zombies with a gun, zombies can't even hide. Chen Dong even believed a little that if it was someone who had practiced martial arts or had great strength, as long as they were bold enough to take down two or three zombies like this alone, they would not have to make much effort at all.

But if zombies can think, it will be much more terrifying, even if the IQ of ordinary zombies is only comparable to that of dogs, it is absolutely difficult to deal with. Imagine, if he faced a group of humanoid dogs in the future, would dodge and run, would cooperate with the siege, and even use simple weapons, Chen Dong felt a burst of gloomy despair.

However, what Chen Dong has always been unable to understand is that how can there be zombies in the eighth and fifth floors repair home, the doors on the eighth and fifth floors are closed, Chen Dong can't get in, it stands to reason that zombies can't get in?

Originally, Chen Dong planned to enter the homes of other residents in this building to look for food, because he found that in the past four days, there seemed to be no other living people in this community except himself.

Chen Dong will not take the things that have the master, because it is considered stealing, and this idea has always been ingrained in Chen Dong's heart. However, if the owner of the thing becomes a zombie, it doesn't matter, if you don't look for food when you're hungry, isn't it waiting to die?

The downstairs is full of zombies, and Chen Dong has never walked around the community, but according to Chen Dong's observation at night, within the range he can see, the lights of the surrounding buildings and units have never been turned on, let alone anyone in the community trying to escape.

Chen Dong often turned on the lights until late at night, because at night, he couldn't hear any angry sound outside the window except for the sound of zombies walking with their steps. In the face of darkness, Chen Dong often thinks crankily, there is a suppressed fear in his heart, if he doesn't turn on the light, it will be difficult for him to fall asleep, Chen Dong thought, since there is electricity, if there are other survivors in the community, they should be the same as him at night, and they won't turn on the lights, right?

Chen Dong felt that the time period for the zombie outbreak should be in the morning, during this time period, the students had already gone to school, the adults had gone to work, and the elderly had almost finished breakfast, and it was time to go out for a walk.

During this time period, most people should not be at home, so after the sudden outbreak of zombies, few people should be able to react to the dense crowd outside to escape. A large number of people outdoors were bitten by zombies, and they were quickly infected and assimilated, and there were naturally not many survivors outdoors, and Chen Dong, who happened to be off duty that day, hid at home and slept lazily, and escaped the catastrophe.

But if that's the case, there must be a source of infection for a sudden outbreak of zombies, so what is the source of infection? In other words, the first wave of zombies carrying the virus in the outside world, where did they come from?

Thinking of the zombies on the fifth and eighth floors, Chen Dong was excited, and suddenly thought of a possibility. Maybe the zombies on the fifth and eighth floors didn't enter from the outside at all, the zombies may have suddenly erupted in all the crowds, and there was no so-called first wave of zombies at all!

After all, even if it is a free time, it is impossible for everyone in the entire community to go outdoors, Chen Dong will hide at home and sleep, and others may also do other things at home.

Thinking of the strange stench in the air in the past few days, Chen Dong suddenly had a guess that this kind of stench, which he had never smelled before, might be the cause of the zombie outbreak. The smell is spread with the air, the air is pervasive, it is impossible to avoid it wherever you hide, and the person hiding in the house may have a lesion and become a zombie at the same time as smelling this smell.

Residents on the fifth and eighth floors may be like this, they all become zombies at home after breathing air!

Holding the electric drill, Chen Dong walked to the corner of the stairs on the third floor, and stood there, he looked at the gloomy sky outside the window through the window of the corridor, his face was extremely gloomy.

If the zombie outbreak is due to the air, will the parents at home also be infected? After all, it's impossible for anyone not to breathe. But Chen Dong has smelled this kind of smell more than once, could it be that Chen Dong has also been infected? But why didn't he become a zombie?

Perhaps, it is because people have different physiques. Chen Dong guessed that maybe he had a special physique, or that he was born with antibodies in his body, and things like viruses in the smell could not infect him at all.

But is this constitution inherited? His physique won't turn into a zombie, so his parents should be fine......

There must be very few people with a physique like Chen Dong, and these people who are not infected must ensure that they are not in crowded places outdoors, otherwise even if they do not become zombies, they will be bitten to death by the surrounding diseased people.

If this speculation is true, the surviving people are determined by their physique, there are definitely not many such people, and the situation in his hometown must be the same, in the community where Chen Dong lives, maybe there is really only one living person Chen Dong......

Looking at the sky, Chen Dong decided that no matter what, he must go home to see, he has luck to survive, his hometown is in the countryside, the population is much smaller than that of Jinxiang City, and the chances of his parents surviving must be much greater than his own!

Firm in his thoughts, Chen Dong took his things back to the second floor, the door of his house was still the same as when he left, the door was empty, not locked, Chen Dong put the electric drill, steel gun and other things he was holding on the ground. He didn't have a key with him, and he was holding something in his hand, and he was afraid that he would accidentally kick the door open with his feet, and he was afraid that he would not even be able to enter the door, so he could only put down his things and prepare to open the door with his hands.

But just when Chen Dong had just put his things on the ground and was about to straighten up, the corner of his eye glanced at the zombie corpse lying on the stairs. The zombie's right hand was clenched, and it seemed to be holding something in his hand, Chen Dong took a closer look, and it looked like it should be a bunch of keys.

Picking up the hammer, Chen Dong walked towards the corpse of the zombie, squatting next to the corpse, Chen Dong hesitated for a moment before deciding to use the hammer to pick the hand that the zombie was holding. It may be that the zombie's hand has been held for too long, the zombie's fingers have been completely stiff, Chen Dong can't pick it at all, and in desperation, he has to step on the zombie's wrist with his foot and pry the zombie's finger with the gun head on the hammer.

This time, with a few crisp sounds of "click" bones shattering, the zombie's fingers were pried open, and the key held in the palm of his hand was picked out by Chen Dong. Chen Dong saw it well, this is a bunch of keys, and it is the key on the security door of a resident, it should be that the old lady wanted to open the door before she turned into a zombie.

This set of keys has been held in the hands of zombies, Chen Dong felt disgusting, and was unwilling to take it directly with his hands, he went home and took a plastic back, put it on his hand, and then grabbed the key. Holding the key, Chen Dong thought about it, walked to the door of the second floor and the door opposite his house, inserted the key into the lock hole and twisted it gently, and after a soft "click", the door lock opened.

The door is open, it would be nice to have a key, Chen Dong has always wanted to go into other residents to find food, this door does not have to be opened by brute force, it can save a lot of effort.

It turned out that the occupant opposite the door was the old lady's house, no wonder the old lady had been wandering on the first and second floors with the key after she became a zombie. Moreover, every time she went to the second floor, the old lady would stand at the opposite door for a while, it seemed that the old lady was obsessed with going home, even if she became a zombie, this obsession was still there.

Chen Dong has already had a picture in his head, after the old lady finished breakfast in the morning, she went out for a walk to exercise, and was bitten on the shoulder by the people who turned into zombies around her, maybe she was very close to the unit building at the time, so she successfully hid in the unit building, and then, the old lady felt that something was wrong, or because of her injuries, she wanted to go home and call 120. So, she took out the key and prepared to go back to her house on the second floor, but before she could get back to the door, the virus infected by the wound completely broke out, and she became a zombie.

The old lady may have a strong obsession with the last thing she wants to do, so after the old lady turns into a zombie, she repeats the process of going home over and over again. The zombies on the eighth floor may be the same, his last thought may be to escape from the house and ask someone to help outside, but he can't escape, and he becomes a zombie at home.

Perhaps, before people become zombies, their last thoughts will be saved, and after becoming zombies, zombies will still keep repeating their last thoughts.

The wisdom of the two zombies killed is limited, this Chen Dong is very sure, and the zombies on the eighth floor will open the door, probably because of the last thought he saved before becoming a zombie. On the eighth floor, it was because of Chen Dong's stimulation that the zombies in the residents on the eighth floor ran their last thoughts and ran out directly, while the zombies on the fifth floor obviously did not have such ability, so they had been trapped at home.

The old lady on the second floor is a zombie, and the relatively complicated operation of unlocking is obviously not possible. Therefore, she could only go up and down the stairs over and over again, and once she reached the step of opening the door, she was directly stuck, and after standing in front of the door for a few seconds, he could only continue to repeat the process of walking the stairs.

Glancing at the zombie corpse of the old lady lying on the stairs, Chen Dong opened the door of the old lady's house and walked in. Because the sky was overcast and the light in the house was also dim, Chen Dong turned on the light, and without hesitation, went straight to the refrigerator and kitchen.