The materials were collected, the survivors were taken away, and the equation set off again with his army, because the food belt was sufficient, and the pot was buried in the village compound, everyone ate a hot meal, rested for a night, and the next day the sky was just slightly bright, and the equation took the guardians and the rescued survivors to set off again.

The rescue of the small village is very simple, the number of zombies is not much, and it is very scattered, there is no wave of hundreds, even a wave of hundreds of cases have not been found, at most there are only dozens of zombies in a wave, and the guardians of the equation have 130 people!

In three days, the equation recovered all the three neighboring small villages, and the materials and survivors were brought back to the base by the equation, and the number of survivors in the base more than doubled in an instant!

And the materials are also very rich, not to mention all kinds of equipment, even the farming machinery used in farming has a lot, but because of the problem of personnel, the equation only temporarily left these baby bumps in the local area, now there are too many survivors, the guardians are walking on the ground, the car is full of more than 200 people, think about it is crowded! But no one has any complaints, everyone has seen the horror of zombies, there is no complaint about this problem, everyone stays in the car quietly.

Such a large group of people is enough for the base to digest for a while, and the equation temporarily decided not to continue the search and rescue of survivors, but to start organizing the construction of the base.

Before coming to this world, I learned a lot of knowledge about equations, from ordinary drilling wood to make fire, to blast furnace steelmaking with high skill requirements, to mechanized machine tool production lines, equations will be everything! As long as time permits, equations can even build their own machines! However, before the construction of the base, several different models and types of machine tools have been purchased, which is a great time saver.

Now that there are enough personnel, what the equation needs is weapons and equipment to fight zombies! The biggest and most terrifying ability of zombies is contagion. A little abrasion can be infected and become a new zombie, but as long as the armor is powerful enough, just like the armor of the equation, the zombie has nothing to be afraid of, but although the machine tool is available and the materials are complete, the time consumed to make the armor is too long, and the equation can't afford it!

There is no armor, ordinary ultra-thin metal armor is actually capable of defending against zombies, and ultra-thin metal armor also has the advantage of being lightweight, although it will affect people's flexibility, but the strong protection ability has completely covered up this shortcoming.

But ultra-thin metal armor needs metal, at least iron, but where does iron come from? The equation thought about it carefully, and made a decision, iron ore doesn't have to think about it at all, definitely not, but there are a lot of iron products, scrapped cars seen along the way, all kinds of iron products in daily life are definitely enough, and now the base of the equation is still small, the iron products in the nearby villages are completely enough for the equation to arm a team of two hundred people, and with the army of two hundred people, you can continue to expand the territory, and the iron products harvested will be more abundant, and you can arm more troops!

Now the main thing is to build the blast furnace, as for how to build, the equation is also known, the system has been studied, there is no special difficulty. Just do it, all the 200 people will be collected, washed and checked, and the personnel who have no wounds are admitted to the base, and the personnel with wounds have built temporary residences outside the base, guarded by guardians, after 72 hours, those who have not mutated into zombies are recruited into the base, and the mutated zombies are directly killed!

Bringing the specially collected materials, the equation began to manually build a small blast furnace, this kind of blast furnace that can be built by hand is not as high as the modern blast furnace, and even the iron products produced are not as strong as the modern blast furnace, but this is the best equipment that the equation can come up with for the time being, and now there is not such a high level of science and technology, this small blast furnace evolved from the ancient shaft furnace ironmaking has become the first choice of the equation.

Even if the quality of the iron produced is not high, it is completely enough to refine ordinary equipment! The iron produced by this small blast furnace is called primary steel, and it is used in ordinary construction steel or ordinary household steel, which is not a problem to defend against zombies.

It took half a month to build the blast furnace, yes it was half a month, a total of 3 small blast furnaces were built, each of which is not big, the amount of steel is very small, and because there is no iron ore, the blast furnace is made of scrap iron products, the iron products are turned into molten iron, and then poured into the mold, and the main body of the equipment is basically out, and the desired shape is turned out with a lathe, or an eye. The scattered pieces are assembled and assembled into finished products, and the armor is completed one by one, which is easier said than done, first of all, there is no steelmaking in the entire base!

Secondly, there is only one person in the base who can use the lathe! Although the armor is simple, it is also extremely complicated, because it is completely protected, there need to be no gaps and sections, fortunately, the design of the armor is made by Medusa, as simple as possible, but the technical content is still too high!

It takes a lot of time to get these people who have not studied systematically to become skilled workers who can produce such complex armor, but fortunately, there is still someone who can use machine tools, so that everything needs to be taught by himself.

Since it takes a little time to forge the equipment, this time equation takes the survivors of the base to start strengthening the wall! The area of the factory is sufficient, even if it is 3,000 people, it is completely enough, but the wall that is only three meters high and 40 centimeters thick is really not safe, and the people of the base began to strengthen the wall!

The bricks and stones were all obtained from the small village, or the houses were demolished, or the courtyard walls were demolished, anyway, half of the village was directly demolished by the equation! And more than three meters wide, more than six meters high small city wall has also been built, every other distance from the city wall there is a small tower pavilion, for the purpose of lookout, the height of the tower pavilion is as high as more than eight meters, standing on the tower pavilion using a telescope, can see far away. The gate was replaced with an ancient gate, and the entire factory became a tiny castle.

The construction of the city gate took a lot of effort, and it took a long time to design the city gate that can pass through the cart, with this set of equipment, haha, not to mention anything else, it is not a problem to block the zombies!

This period of day and night construction, a construction is two months smaller, now it has entered the winter, the temperature here has also dropped to more than ten degrees, although it is not cold, but you can also feel a burst of coolness.

In the midst of the coolness, the blast furnace ironmaking began! After the teaching of the equation, these 12 people finally learned the use of the blast furnace, although they are not very skilled, but they can practice molten iron, these molten iron are melted into finished iron products, don't worry about anything else, as long as it is melted, so it is very simple.

The parts of the armor are manufactured one by one, sent to the machine shop to start trimming and polishing, and then sent to a small workshop, where the female survivors make the lining, and then to the polishing area, polish and spray paint, and finally install a fine mesh facial protection net on the helmet area, and finally assemble and mold, a set of all-round armor is completed.

To be honest, the thickness of this armor is very thin, and bullets can't be stopped, but there is no problem in blocking zombies, which is also the original intention of armor. The main thing is to defend against the damage caused by zombies.

This small production point of the equation can make 3 sets of armor per day! After the expansion, the equation now has 200 base guardians. This is already a large force, even if the equation itself faces so many troops, it will definitely not be able to get any effective way.

And these guardian troops, in addition to helping the production line collect materials every day, need collective training in the afternoon, changes in formation, the use of weapons, and the strengthening of physical fitness, the guardians are really tired.

The equation also teaches a special knife technique, which requires a special knife to be used, and this special knife is also one of the pieces of equipment on the production line!