After learning the lesson of making crossbow arms on the water tower last time, Qin Fei only dared to light a fire during the day when he burned lime this time.

In the evening, he simply turned off the earthen stove.

Qin Fei spent the evening cutting down some trees near the shelter, and then using a hacksaw and dagger to process them into wooden horses, which were placed between the wooden pillars under the high platform.

In this way, when the zombie attacks the support pillar of the shelter, it will also be injured by the rejection horse.

When Qin Fei used an earthen oven to burn lime during the day, he would occasionally invite some zombies.

But under the power of Qin Fei's iron crossbow and horse rejection, plus it was daytime, it was easily solved.

After the high platform was already full of rejecting horses, Qin Fei began to dig a deep trench on the ground near the shelter.

The shelter is close to the river, so the soil in this area is moist and soft.

Qin Fei dug up quickly.

After digging a full circle of deep trenches around him, he continued to make the horses.

These rejected horses were all stacked in the deep ditch by Qin Fei.

Except for spider zombies. Although most of the zombies also jump, the distance they jump is not far, not even half of that of ordinary people.

Therefore, these deep pits dug by Qin Fei can be easily crossed by him, but the zombies cannot.

They will only fall inside the pit.

Qin Fei fired for two days, and the lime in the furnace was basically fired.

This is also because the shelter he built is relatively small.

If it was the size of the Baishui River camp, even if Qin Fei was busy alone until the corpse tide arrived, it was estimated that he would not be able to finish it.

After the lime is burned, it can be made into cement by mixing it with sand and water, and then through the mixing of the cement mixer.

After the cement was made, Qin Fei first buried the steel bars in the ground below the high platform, and then nailed wooden planks to the perimeter.

Finally, cement is poured into this reinforced column, and this load-bearing column made of reinforced concrete is ready.

Although the quality of this pillar is not very good because of the rough workmanship, it is not a problem at all if it just supports this high platform.

After pouring all these steel pillars, Qin Fei pasted the remaining cement into the deep pit he had dug.

This reinforces the dirt walls inside the pit.

Zombies can't jump out of a deep pit after they fall into it.

But they would keep digging towards Qin Fei's location, and once the bottom of Qin Fei's shelter was hollowed out by these zombies, the entire shelter would collapse.

Therefore, it is necessary to reinforce the walls around the pit with cement.

This can buy him more time in the zombie tide.

When the Baishuihe camp was attacked by zombies, Qin Fei took advantage of the chaos to take away a lot of supplies, and most of these supplies were some food.

So these days, he doesn't have to think about food.

It was now the twentieth day of Qin Fei's journey into this world. In other words, it took him six days to build this shelter.

Now there is only one day left before the arrival of the corpse tide.

The defense facilities in Qin Fei's shelter are mainly to reject horses, which is definitely not enough.

He had to prepare some explosives.

Although the Molotov cocktail was simple to make, Qin Fei couldn't find a little gasoline at all now.

The cars, gas stations, oil drums, and wherever gasoline could be stored, are almost empty.

Gasoline is extremely precious in the last days, so it has long been hollowed out by other survivors.

But Qin Fei can make some iron pipe bombs on his own.

He had previously found a polymer bowstring and a packet of gunpowder in the weapons case of the Shanwei Food Factory.

Gunpowder and dirt can be made into the most basic iron pipe bomb when placed in an iron pipe.

Gunpowder is the power source for iron tube bombs. The soil is used to block the mouth of the iron pipe, so that the gunpowder can form a closed space when it explodes.

Because the shelter was near the town, Qin Fei could easily get the iron pipe.

Whether it's a toilet, or a faucet and other equipment, you can almost always find iron water pipes. Qin Fei used a screwdriver and a hacksaw to disassemble these iron pipes.

If it's too long, cut it with a hacksaw.

Finally, there is the production of the lead.

In the world of Septaster, potassium nitrate powder must be used to make antibiotics.

But without the relevant chemical equipment and professional knowledge, it is difficult to make antibiotics on their own.

As a result, most survivors almost ignore this item when looting pharmacies, and some can be easily found in pharmacies.

After potassium nitrate is boiled, its crystalline powder is attached to the cotton blending thread to make a relatively rough lead.

Finally, the lead is put into the iron pipe, which can contact the gunpowder inside, and the iron pipe bomb can be detonated.

The production process is not difficult.

But because the amount of gunpowder Qin Fei possessed was limited, he only made about twenty pieces.

Pipe Bomb: A tube bomb made of gunpowder, iron pipes, and potassium nitrate leads. 】

It took Qin Fei another whole day to make these bombs.

Today is the twenty-first day.

Because the tide of corpses was coming, Qin Fei naturally didn't go.

He stayed at home all day, cutting wood with hacksaws and axes and making horses.

Night falls.

The scarlet moon rose again in the sky.

The color of the moonlight this time was much darker than the previous two times. The sky was also dyed even more red by the moonlight.

Ten o'clock in the evening.

Qin Fei held an iron crossbow in his hand, crouching on top of his shelter, observing the surroundings with all his attention.

"Wang, Wang, Wang"

Dogs barked in the distance.

The first wave of corpses tonight is not zombies.

Accompanied by the barking of dogs, there were five or six zombie dogs, which were roaring and galloping towards Qin Fei.

The tails of these zombie dogs are almost all broken. Most of their fur had already fallen off, and even the crimson flesh inside their bodies was exposed.

In some places, such as their waists, there are even a few exposed ribs.

Zombie dogs don't have an IQ, and they don't have to be afraid.

All they know is to keep rushing forward.

When these zombie dogs rushed to the vicinity of the deep pit, they all fell into the pit in an instant, and were pierced by the horses placed in the pit.

Zombie dogs are fast and can run during the day, but their bodies are more fragile than ordinary zombies.

After such a pit rejection, almost all of these zombie dogs died.

One of them was not completely dead, Qin Fei immediately jumped off the high platform and made up an arrow with an iron crossbow. Then he used a long stick to fish up the dead zombie dogs in the pit.

The main purpose of this is to prevent the accumulation of corpses in the pit and eventually fill the entire pit.

Zombie dogs, though their flesh and blood have long been rotten, are inedible.

But the dog skin on it is very useful. The body of the zombie dog has lost the nutrients supplied by the flesh and blood, and their skin has long been dehydrated.

As long as it is cut, it is a piece of natural leather that has been dried.

In addition, dog bones can also be boiled into bone glue.

Although, it can also be boiled with the bones of zombies. But no matter how you say it, zombies are transformed from people.

With the bones of zombies, after all, it will still feel weird in my heart.

After Qin Fei picked up the corpses of the two zombie dogs, several more zombies appeared around.

In terms of numbers, the number of zombies this time is far less than the previous two zombie waves.

Zombies are attracted because of the presence of living people. Therefore, the more people gather, the more zombies will be in the corpse tide.

Qin Fei was the only one here, so the number of zombies who came to attack every time was not as large as he was in the Baishuihe camp.

After approaching Qin Fei's vicinity, these zombies also fell into the deep pit.

Qin Fei stood on the high platform, picked up the iron crossbow in his hand, and began to mend the knives on these zombies.

Although Qin Fei's movements were already very fast, the speed at which he killed zombies was only comparable to the speed at which new zombies appeared.

Although the number of zombies is not much, Qin Fei is only one person after all.

So he didn't even have time to climb down the platform and clean up the corpses in the pit.

As the time went by little by little, it was soon 12 o'clock in the morning.

There were two fat zombies in the distance, followed by two other ordinary zombies, rushing towards Qin Fei's position.