It was not yet dawn, and there was a light rain in the sky.

Drip and drip, drenched the raw materials placed on the open space.

The second uncle got up early and asked a few people to put away some things that could not be wet.

When Li Yu was sleeping in the middle of the night, he heard the sound of rain outside the window and got up quickly.

Now the wall of the second outer city has not been built yet, and the rainy season is about to come. If the rain does not stop, the construction of the second outer city will be delayed for a long time.

The height of the second outer city was built according to the standard of 15 meters.

These days, I also took advantage of the time to build the bottom floor below, and now it has been built to nearly 13 meters.

There are two meters left in the height.

Just because I have been busy, I haven't installed the gate yet.

Li Yu got up quickly, then put on his clothes and ran to the outer city.

At this time, seven or eight people were already there in the Second Outer City, and they were moving some cement made yesterday into a shed that had been built.

Li Yu walked down from the fence, stepped forward to help, and then asked his second uncle to call He Chao and the others to help.

After He Chao and the others arrived, the moving speed was much faster.

Then Li Yu looked at the empty gate, and said to Lao Zhou who also came to help: "Old Uncle Zhou, have you finished the gate you made a few days ago?

It took about a week before and after, I haven't watched it all the time, and it's almost finished now, right? "

The second outer city also needed a door, so the group was handed over to Lao Zhou, who used to be a mechanical constructor, and Yang Tianlong and others to help.

Lao Zhou was also wearing loose clothes at this time, probably just woke up after being woken up and ran over in a hurry.

Lao Zhou nodded and said: "Mr. Li, the door has been finished. We used about five tons of steel plates, inlaid reinforced concrete in the middle, and then opened and closed the door. We used hooks and pull rings. Through leverage, one person You can open and close the door.

Are we going to install the door? "

Li Yu nodded and said: "It's time to install it. It's raining lightly now, and I don't know if there will be more rain in the future. It's the rainy season again. This time, it may not stop."

Lao Zhou felt that what Li Yu said made sense.

Li Yu said to everyone: "Okay, then install the gate directly."

Lao Zhou replied: "Okay, but it needs a forklift to move it up. I will use a forklift to move it later."

Li Yu nodded.

Watching Lao Zhou and the others move the big iron gate over.

This gate is not that huge, only five meters wide and six meters high.

Almost can basically accommodate all truck models.

On the fence, the duty officer who had been observing the situation outside the base suddenly shouted at them: "There are zombies coming in. Everyone pay attention."

After speaking, he picked up the crossbow and shot at the zombie.

The gate has not been installed yet, if those zombies are allowed to come in, the second outer city will be overwhelmed by those zombies.

So he turned to Li Tie and the others around him and asked them to go up to the fence to support them, so as not to let a zombie enter the outer city.

Under Li Yu's order, the people on the wall attacked and killed the zombies outside the base.

rumbling~
God struck a thunderbolt.

The sound was so loud that it seemed to explode right next to the ear.

Lightning landed in the forest not far from the base, and Li Yu and others turned their attention to it.

After a while, they saw a thick white smoke rising from the mountain forest in the north, and within a minute, the white smoke disappeared.

Whoa!
Lao Zhou drove the largest forklift in the base, drove over, and then parked the forklift on the edge of the second outer city.

Li Yu turned his head and said to the rushing cannon: "Go to the inner city and drive the crane over, it will be used later to install the door."

Cannon quickly ran back to the base.

In this second outer city, an urn city was also built, and the area of ​​the urn city was about the same as the previous two.

At present, the crane is relatively large. If it wants to drive out of the base, it can only go out from the earliest urn built.

No matter the height or width of the gate of the earliest urn city, it could allow the crane to pass through.

When the crane came over, Li Yu and the others had temporarily placed some door opening and closing machines on the fence that had not yet been built.
Now in the second outer city, although it has not been completed, it is already more than ten meters away.

Thanks to Lao Zhou's setting, the door of the outer city switch can be opened in two ways, one is under the outer city, and the second is on the fence.

But if you want to open the door under the wall, you must use a key to open it.

Although this door is very simple to open, the settings for opening and closing the door are not simple.

This is why Lao Zhou took a lot of painstaking efforts to get such a door.

The crane drove over slowly, and then hoisted up the big iron gate.

Immediately afterwards, He Chao drove a forklift to support the big iron gate, which could prevent the iron gate from falling down.

"Hurry up and install it." Li Yu said to Lao Zhou.

On the fence, Li Yu saw a big wave, nearly a hundred zombies were coming here.

This is a bit wrong, so many zombies came just after it rained.

Perhaps because of the lightning not far away, the sound attracted some zombies.

Li Yu watched Lao Zhou and the others struggling to install the gate, so he said to the people around him, "Don't let a zombie enter the outer city. Lao Zhou and the others are still installing the gate below."

Lao Qin also came. He put down the crossbow in his hand and said to Li Yu: "Mr. Li, can I use a gun? It has a silencer. The speed of the crossbow is too slow."

Li Yu glanced at Lao Qin, and said, "Okay, you can come here as long as the effect is good."

Then let him go to the duty room to get the gun by himself.

Everyone struggled to resist the zombies running over from the woods.

The zombies among them are the same as before.

It's just that Li Yu and the others are more nervous now than before. It doesn't matter if these zombies came over in the past, after all, there are still walls blocking them.

However, these zombies must not be allowed to enter the outer city now. Once they enter, Lao Zhou and the others will be in danger.

bang bang bang

On the wall of the second outer city, they squatted on the wall that had not yet been built, and kept pounding the zombies.

Thanks to the high temperature yesterday, the outdoor temperature reached 30 degrees. In addition, since the end of the construction yesterday evening, it has been more than 12 hours since the watering.

The cement and concrete on the fence has dried up.

They kept firing, killing the zombies that kept rushing towards them.

The rain is getting heavier.

Because of their haste, none of them carried raincoats.

So wet.

The wall of the second outer city has not been constructed yet, so naturally the protective fence has not been completed.

At a height of more than ten meters, without any protective barriers, it is still a bit scary to look down from the top.

What's more, they have to keep shooting on it to stop the zombies from coming in.

After half an hour.

Boom!
The big iron gate was finally installed, and He Chao tried to open it a little under the fence.

beep~
The big iron gate was slowly opened.

Then I tested it again and closed it.

also works fine.

After closing the big iron gate, everyone breathed a sigh of relief.

Li Yu also felt relieved, then got down from the fence and came to the front of the big iron gate.

He hammered the big iron door with a gun.

Boom!
A dull sound came out.

The sound is very solid at first glance.

Immediately, Li Yu said to Ding Jiu: "It's raining, can we continue the construction?"

Ding Jiu stretched out his hand, felt the amount of rain, pondered for a while and said: "It is recommended not to, now is the rainy day, if the fence is built in the rainy day, the sealing must be done well.

But now that there are zombies outside, in order to be well-enclosed, operations must be carried out outside the fence, which is too risky.

In short, everything is to let the wall dry as soon as possible.

Fortunately, the temperature was relatively high yesterday, otherwise the part of the construction yesterday may be affected by the rainy weather, resulting in a decline in the hardness of the wall. "

Hearing this conclusion, Li Yu was silent for a while.

So he said: "What if there is no large-scale construction? No more building up, just build some guardrails on the edge, and do a good job of waterproofing, is that okay?"

Ding Jiu said: "You can try it. It's not raining too much now, but if the weather is like this, it may take three or four days to dry. In addition, the built guardrails can no longer be wet."

Li Yu nodded and said: "Let's do this first, don't build higher for now, and get the fence done today."

Ding Jiu nodded and said yes.

Li Yu was about to leave, and thought that there were still many zombies outside, so he said: "You construction personnel, each of you should tie a rope around your waist, so don't accidentally fall during construction."

Ding Jiu said, "Okay, I'll make everyone be careful."

Li Yu was relieved.

Seeing He Chao, he also said: "Let the brothers who are on duty outside come back quickly, before the rain is not heavy and there are not so many zombies outside.

When it rained heavily, they couldn't come back even if they wanted to.

In addition, you also need to do a good job of protection. The protection of the second outer city here is left to you. "

He Chao nodded quickly, expressing that he would take care of everything.

After explaining everything, Li Yu returned to the duty room at the main entrance from the Second Outer City.

Now that the wall is connected to the city, wherever they want to go, they can just walk over the wall.

The duty room at the main entrance is the largest, with a space of tens of square meters.

It was full of guns and ammunition, as well as a light machine gun.

Li Yu sat in the duty room for a while, looking at the pictures on the screen, which were all near the fence and the camera pictures outside the base.

In the picture, the drizzle is blurred, and some zombies are wandering in the rain.

Some zombies raised their heads, devouring the rainwater, while others walked numbly.

But in this rain, all the hidden zombies came out.

It seems that in the rain, they are the masters of this planet.

In the base, the newly planted crops also swallowed the precious rainwater and thrived.

Li Yu sat in the duty room for a while, and then came to the cell where the gentle man Ma Di was imprisoned.

Outside the cell, Li Haoran was watching the rain fall from the sky boredly.

Seeing Li Yu approaching, Li Haoran quickly got up from the stool and said to Li Yu, "Brother."

Li Yu nodded, looked at Li Haoran and said, "How is that person inside now?"

Li Haoran said: "I haven't spoken all the time. If I give him food, I will eat it. If I don't give him food, I won't make a fuss. I just keep silent, ask him questions, and don't answer anything."

Li Yu thought for a while, opened the door of the cell, and walked in.

Inside the room, it was a little dark.

blah blah blah!

Li Yu turned on a white woven lamp.

That Maddie sat on a stool with his feet in chains and his hands in silver handcuffs.

At this time, as Li Yu turned on the white weaving lamp, Ma Di stretched out his hands to cover the light in front of his eyes.

Li Yu pulled a stool and sat in front of the man.

The backrest of the stool was in front, and Li Yu put his hands on the backrest and sat on the stool backwards.

Quietly looked at this man.

The man also heard the sound of someone coming in, but he didn't rush to open his eyes to see who was coming, but waited slowly for his eyeballs to adapt to the light, and then slowly took off his hand.

When Ma Di saw that it was Li Yu, his eyes shrank slightly, and the panic in his eyes disappeared in a flash.

Li Yu just sat in front of him, didn't say anything, just looked at him like this.

"Do you know the correlation between rain and zombies getting stronger?" Suddenly, Li Yu asked suddenly.

"Is it raining?" Maddy said.

Then prick up your ears and listen carefully to the sound.

crackling
The rainwater dripped on the eaves, and outside the room, the water on the eaves splashed on the steps.

"Down." Li Yu also had patience and said to him.

"The formation of zombies originated from meteorites from outside the sky. The rain that fell from the sky must have some elements that we have not researched that have changed these zombies."

"An element that has not been studied?" Li Yu asked.

"Yes, I was in the chemical plant before, and I actually studied the difference between rainwater and groundwater. Except for some dominant elements, there are also some normal underground trace mineral elements. I didn't find any difference at all."

Li Yu asked again: "Then why did the green zombies appear, what did you do?"

Ma Di thought for a while, and various thoughts flashed through his mind, and he said, "Green zombies, it's because the pH value of the water is too high, which consumes carbon dioxide severely, and beneficial algae cannot reproduce.

But this is only the superficial reason for turning green. This is only a dominant feature, and it has no necessary connection with the zombie becoming stronger.

The experiments I did have nothing to do with this.

It's just that in the chemical plant, there is a chemical waste that has been in disrepair for too long, and it was scrapped, and then flowed into the wastewater treatment pool.

Later, I studied the wastewater discharged from the chemical plant. Compared with the elements and microorganisms of rainwater, there is no pattern at all.

I have no clue at all, I have studied for a long time, but there is no correlation between them.

There is no point at all, nothing has been found, I have done many experiments, and there is no pattern at all."

Li Yu listened carefully and said, "So, when we saw you, you broke down?"

Maddie nodded and said, "Yes."

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