The ghost said unhurriedly: "A few years ago, when a marathon was held in Los Angeles, a terrorist bomb was detonated, which caused a lot of panic, and a Chinese student was killed. Terrorists use pressure cookers to make explosives, because the pressure cooker is very well sealed, and the effect can only be achieved when the internal pressure breaks through the peak. Any idea what a filler is? It's ammonium nitrate. Well, it's a kind of fertilizer.

The fertilizer "ammonium nitrate" is an extremely unstable substance, and a few years ago, a farm truck filled with ammonium nitrate fertilizer in Yunnan Province exploded, destroying most of the village. So the power of this thing is still considerable. ”

After the ghost finished speaking, everyone suddenly realized, no wonder he said that this thing is available on the farm, indeed, the farm has an agricultural material store, which is piled with hundreds of tons of fertilizer, and it is not difficult to find ammonium nitrate fertilizer.

The ghost cleared his throat and continued, "We can plant some mines at intervals outside the pit, detonate the principle of short circuiting wires, draw out a wire, and connect the circuit to form a short circuit when the target appears. ”

We're all dizzy, and the ghost is very easy to say, but it's not that simple, is it?

The ghost added, "I suggest we go back to the farm, pull back all the ammonium nitrate fertilizer we can find, and pile it on the inner slope of the valley, don't transport it into the valley, that thing is more dangerous, and when it's time to make the mines, I will take the men to the hillside, and the women should not participate." ”

This sounds scary, but I didn't have to follow it this time, and in my eyes, the fertilizer that the ghost said was almost like explosives.

Seeing that we were still confused, the ghost was helpless, and introduced it in detail: "This thing is made into a mine, and you have to be careful when using it, first of all, it is waterproof and wrapped with plastic bags and tape. Another is to avoid accidental injury, the usual wires are connected in a special control room, and no one is allowed to move without permission. There must be a special person to take care of it, in actual combat, you can preset the position according to the terrain, that is to say, set up the terrain to guide the zombies to the vicinity of the minefield, and set up obstacles nearby, and when the zombies attack the obstacles, it will inevitably form a crowded accumulation effect, the front obstacles are not breached, and the zombies that come later are crowded up, and the detonation can achieve a better effect at this time. However, the burial point should be carefully calculated, that is, the maximum number of zombies will be eliminated without causing great damage to the obstacles. ”

As soon as the ghost said this, our hearts gradually became clear, so we decided to send some men back to the farm tomorrow to find the fertilizer ammonium nitrate.

That night, we closed the gates of the castle and sent a team to patrol the roof of the castle, while the others went back to rest and rest.

The next day, everyone got up early, and went to the pit to check, one night, the number of zombies in the pit increased a lot compared to yesterday, it seems that if no measures are taken, these zombies will be able to climb to the pit with the bodies of their companions sooner or later.

I looked at the hillside opposite the pit, there have been suspicious figures and slight noises in the depths of the weeds, this mountain area is not very peaceful, I don't know if Zheng Dali's guy, will this be the old nest of zombies? As a human being, I feel a little sympathy, but thinking about their methods to the girls, I feel refreshed!

In order to pass through the big pit, we made several solid movable ladders, erected a high wall that could climb the castle, and put it down to pass through the trap, because the pit is too wide, if this bridge ladder is not solid, it is easy to break in the middle, so this bridge ladder is quite thick and solid, even if a strong man of 100 kilograms steps on it, it doesn't matter.

Ghost, Canaan, Sunshine, Tianxu, Chen Da, Shanqi, Haiyang and a dozen other men, with our assistance, passed through the bridge and ladder, and ran to the entrance of the passage halfway up the mountain under the cover of weeds, as long as they entered the wooden gate, they would go all the way until they went out of the cave on the other side of the mountain, and we set up some obstacles at the entrance of the cave on that side, which could not stop the people who could cause destruction, but they could stop the simple-minded zombies.

They went back to the farm to find the ammonium nitrate fertilizer, I didn't understand this, I thought ammonium nitrate was fertilizer, Canaan said no, there are many kinds of fertilizer, there are urea, diammonium, ammonium nitrate is just one of them, and the target of the ghost is only ammonium nitrate.

I silently prayed in my heart that they could find the fertilizer they needed smoothly and bring it back safely, and nothing would happen!

You know, the corpses have entered the mountain, and the environment outside the mountain can only be worse!

They will have to come back tomorrow at the earliest.

We who stayed in the valley were not idle, patrolling the trap pit tightly, and when we saw the zombies that broke free from the barbs, we solved them, and the corpses at the bottom of the pit accumulated more and more, so that if we go on, there will be another wave of corpses, and you can climb up by stepping on the bodies of the previous zombies!

But now it is too risky to go down to the pit to clean up the corpses, and new zombies emerge from the mountain and fall into the pit every minute.

"Sister Duo, I don't know, it's almost a meter high, no matter how clumsy the zombie is, it can climb up with the corpse." Elle was worried.

"Well, the pit must always be ready to pick up the person who clears the corpse and take cover." I didn't have a rut either, the crater was dug in a hurry, and in order to circle the valley as quickly as possible, and in order not to destroy the underground spring, we did dig too shallow.

Zhang Xiaomei and Adam, who patrolled the valley with us, Tang Xiao and a few people immediately went back and called some more young adults to come over, and some of them jumped to the bottom of the pit to carry the corpses, and transported them to the opposite side of the trap pit to pile them up to form a barrier, so that the corpses would not strayed into the trap because of blind advance, if there was no human attraction in front, the zombies would turn around when they encountered obstacles.

In the process of cleaning up, they also carried the zombies trapped on the barbs to the pit with headshots, this work is not light, and they have to endure the stench that comes to their faces, although they all wear gloves, they will inevitably rub some corpse liquid and rotten meat on their bodies, and the careful Tang Xiao will distribute the masks we brought from the community to everyone, which can also relieve the pain of breathing with the zombies at close range.

Half-grown teenagers like Zhao Yue, Da Ning Zai, Xing Zai, and Xiao Zhan also joined the work, and the women were responsible for guarding the ground inside the trap, always ready to cover them back to the ground in the valley.

There are a lot of scattered zombies on the mountain, and they like to be in groups, at least four or five in each wave, Zhang Xiaomei just pulled a dead corpse up from the hands of Adam and Daning Tsai at the bottom of the pit, and a short zombie jumped out of the weeds behind him, Zhang Xiaomei's double knives were still pinned to his waist, and before he could draw the knife, the zombie had already arrived!

On the other side of the pit, we all looked at it and let out exclamations in unison.

Zhang Xiaomei had no choice but to roll out to the side, the zombies pounced in the air, and fell into the trap pit, Zhang Xiaomei just breathed a sigh of relief, and two zombies jumped out of the weeds around her, only two meters away from him!

At this time, Zhang Xiaomei had already started with two knives, he quickly assessed it, the zombie on the left was closest to him, and in less than a second, he pounced on this zombie and inserted the blade into the zombie's temple.

At the same time, the zombie on the right had already pounced behind Zhang Xiaomei.

Zhang Xiaomei just twisted her body, but saw the zombie behind her lying on the ground softly, and Tang Xiaoyou's hands were still held in the short spear that pierced into the corpse's brain.

Tang Xiao had just dragged a dead corpse on the pile of corpses next to him, and came over in time to relieve Zhang Xiaomei's encirclement.

"Dude, thank you! Oh, I'll ......" Zhang Xiaomei didn't know Tang Xiaoyou's name, and just wanted to ask, she saw two other zombies coming out of the grass behind Tang Xiaoyou.

He didn't have time to warn Tang Xiaoyou, so he quickly pounced on the latter with a knife, startling Tang Xiao again, thinking that this buddy was red-eyed, and even he was going to take the knife himself, so he hurriedly flashed to the side.

By the time he reacted, Zhang Xiaomei had already exploded the head of a zombie, and Tang Xiao hurriedly used his strength to pull the short spear out of the head of the dead zombie on the ground, and flew towards the remaining one.

The two zombies turned dead without any suspense, and Tang Xiao smiled at Zhang Xiaomei again: "Thank you, buddy, you returned the favor so quickly, huh?" ”

Zhang Xiaomei's eyes scanned the weeds vigilantly, and she replied, "I like that others owe me more, hehe." What do you call a buddy? My name is Zhang Xiaomei. ”

Tang Xiao was stunned again, obviously "shocked" by the beautiful name of this handsome young man, but quickly replied: "My name is Tang Xiaoyou, but I am Xiaoxiao of Dawn, what about you, Xiaomei?" ”

Zhang Xiaomei saw that the grass had become quiet again, so she turned back to Tang Xiao and said again: "I am small and small." Xiao and buddy, a few zombies pop out of the grass from time to time, we really have some eyes on the back of the head, so let's take turns, you look at the grass, I'll move the zombies, if someone is tired after a while, change again, what do you think? ”

Tang Xiao thought about it again, it could only be like this, like being caught off guard by the zombies just now, it was indeed quite dangerous!

So the two set up a temporary group, one standing guard and the other working.

Adam and Daning Tsai didn't know what was going on at the bottom of the pit, they couldn't see Zhang Xiaomei and Tang Xiaoyou from that position, but they could see a few of us, and from our nervous expressions and exclamations, they understood a small danger that had happened just now.

We watched the screams on this side of the pit, but across a big pit, and couldn't rush over to support, in fact, I am very confident in the skills of these young men, with their reflexes and combat ability, it is not a problem to deal with these zombies, the main thing is that it happened suddenly, and we are not lightly scared.

The others also learned from these two guys, working in groups, the weeds were too close to the corpse pit, and only one person was sent to stand guard, even if they issued a warning, they were afraid that it would be too late, and they still had to have a special guard partner, and the other people could work with peace of mind.

Everyone dispersed, and there was a group of ten and twenty meters apart, one stood in front of the grass to patrol, and the other person was responsible for pulling the dead body from the bottom of the pit, and at the bottom of the pit, two people pushed the dead body up.