Just when the agricultural cooperatives began to take root in the surrounding areas of the imperial capital and began to operate in a flourishing manner.

On the other side, Xia Lin, known as the "wise man of the alliance", brought three construction teams from the First Construction Company, together with some managers from literacy classes and Master Faun, to level the land and build various buildings on the bank of a river about 20 kilometers away from the industrial park.

This is what he found as a suitable R&D center for the alliance after many expeditions along the Earns River, remote but across a grove of trees on the banks of the river there is a deep inlet that allows for the construction of docks and provides convenient but private transportation.

The south and west sides are largely uninhabited, and only a fence is needed to clear all kinds of vegetation that provides shelter, and only a team of ten industrial park guards needs to be stationed to ensure that no one can infiltrate the area without the power of magic.

With the completion of the foundation leveling work in the early stage, and the construction of wharves, wooden houses, fences, roads and other infrastructure, Xia Lin bought a cargo boat and began to transport various building materials and machinery and equipment here.

With 700 short steel pipes and relatively precise steel boring machines, Xia Lin was naturally ready to point out the technology of muskets and artillery, and the first thing was to make gunpowder.

After preparing the three raw materials of saltpeter, sulfur and charcoal, Xia Lin began to purify the potassium nitrate.

There is no difficulty in this step, that is, the potassium carbonate prepared by adding soybean milk and plant ash water crystallization to the solution after saltpeter dissolution is heated, and the resulting precipitation is filtered out and then cooled and crystallized, and the potassium nitrate crystals obtained through such an operation are already extremely pure.

Then Xia Lin mixed and stirred the three kinds of ground raw materials according to the approximate weight ratio of 15:2:3 of the best formula of black powder, and the most basic black powder powder was obtained.

However, Xia Lin was definitely not satisfied with this kind of petty gunpowder powder preparation, and he chose to use the small equipment he brought to continue processing these black powder powders.

Water is added to the powder to condense it, which is then pressed into a cake shape with a roller shaken by hand, dried in the shade and passed through another toothed copper roller.

The reason why copper is used is because copper does not accumulate static electricity, and it is definitely safer to use copper in such a process that has the risk of deflagration or even explosion.

In this way, the cake-shaped black powder is crushed into particles, and then screened and rounded and polished by the drum to finally obtain a smooth round and similar particles.

Due to its stable size and uniform combustion rate, this granule is several grades stronger than bulk powder black powder.

And such uniform particles are also convenient for Xia Lin to carry out the next operation, that is, the paper shell is fixed.

Not in a hurry to carry out the next operation, Xia Lin first had to test the power of the black powder he made.

He filled a jar of black powder in a clay pot about twenty centimeters in diameter, which was soaked in a solution of potassium nitrate and then stained with charcoal powder and sulfur powder twisted into a thin rope.

Xia Lin carried the clay pot, which was close to a heavy weight, and led a huge group of people to the bank of an open river, planted the earthen bomb at a distance of about fifty meters, and then returned to the place and threw a flaming arrow.

"Boom!" A loud bang sounded on the bank of the river, and a shallow pit with a diameter of nearly two meters appeared on the ground, and Master Faun and the twenty employees who had taken the literacy class from the seven factories were immediately dumbfounded:

"Oh my God! Boss, how powerful is your magic?"

"I'm afraid this can even blow up the mountain, right? He is truly a mysterious and powerful mage!"

In the face of the employees who praised the power of their magic, Xia Lin's heart was speechless:

"Don't think about it, the One Ring Spell doesn't have this power, it's the power of the black powder we just made.

This gunpowder burns violently and explodes when it encounters sparks, and I brought you here to use this property of black powder to make two weapons that can change the battlefield!"

"Black powder? Just those little round grains? Boss, you didn't lie to us, did you?"

Master Faun leaned

His eyes were full of skepticism, obviously not believing that the black particles made of saltpeter, sulfur, and charcoal could produce such great power when he saw them with his own eyes.

"If you don't believe me, I'll give you a whole little bit, and you can light a fire yourself!"

Xia Lin decided to use practice to convince their group of "law blind", and made an earthen bomb out of a small clay pot that was two circles smaller than the clay pot just now, and pulled the fuse five meters away from the bomb itself.

In order to prevent the fuse from going out due to too far away, three strands of fuse were twisted together to make a more reliable fuse.

"Okay, which of you will try? Light this rope with this candle and run to us as soon as you hear a strange noise!"

Xia Lin set up the second crockpot and instructed several people on how to operate it.

"I'll try!"

Just when everyone hesitated, Master Faun couldn't wait to stand up, and since he wanted to try, the others could only watch.

After Xia Lin and the others retreated to the absolute safety area thirty meters away, Master Faun crouched down and lit the fuse with the candle.

As the sound of "Woo Ng" sounded, Master Faun sniffed and noticed that there seemed to be a smell of sulfur in the air, and hurriedly ran towards them following Xia Lin's previous instructions.

Before he could run more than ten meters, the fuse burned to the end, and another familiar explosion sounded, but the momentum was much smaller than just now.

After a burst of floating soil fell, a pit less than a meter square appeared on the ground, which was the location where Xia Lin had placed the clay pot just now, and it seemed to contrast with the big pit caused by the big bomb before.

"Prion, Lord of the Molten Fire! That's exciting!"

Because his legs were a little slow, Master Faun also had some floating dirt on his body, but he couldn't hide the excitement and excitement in his expression.

Maybe the dwarves also have a lot of fate with black powder, the first time they saw such an explosion, everyone else was pale and frightened, but Master Faun was still in good spirits, and even shouted to do it again.

"How? Now you believe it, right? Black powder can explode and can be used to create a weapon similar to a crossbow, but much more powerful than an unenchanted crossbow."

After a brief explanation of the usefulness of black powder, Charlin returned to the cabin with his somewhat frightened staff and the excited Master Faun, and asked them to start making bullets from lead and paper shells according to their demonstrations.

With a machine tool, it was not difficult to make lead bullets, so Xia Lin specially designed a friction forging press for this purpose, and also cast and processed many high-carbon steel molds for rapid stamping of lead bullets.

There is nothing difficult about this machine, the friction forging press, and the working principle is actually somewhat similar to the Gutenberg printing press developed by Xia Lin before, which uses a screw to generate downward pressure to work.

It's just that the friction discs on both sides drive the flywheel horizontally in the middle to rotate the screw and provide pressure.

Such a simple forging machine is suitable for processing soft lead bullets, and the pressed lead plate is placed on the high-carbon steel mold under the forging press, and hundreds of lead bullets can be obtained at one forging press, which can be described as convenient and fast.

As for the ignition device, Xia Lin thought about it for a while, and decided not to prepare a troublesome and unreliable fire rope for the time being, but decided to conduct an experiment.

He wants to use the Fire Rune + Fire Rune + Mana Matter Rune + Template Rune set copied from the Flame Arrow spell model to create a small rune disk, and control the Mana Crystal to connect and disconnect through a trigger mechanism to provide an open flame source for this musket.

According to Xia Lin's experience, the combination of such a type of rune and a second-class rune should be able to take effect alone, but I don't know if the price of the rune disk of this spell model is acceptable.

This has the added benefit of the fact that since the flame created by this rune disc is sure to burn through the potassium nitrate paper shell, the paper shell containing the ration of black powder can be made into a fixed paper shell bullet that wakes up early.

The front fastens the buckshot to the paper shell, and the back is the shot

Projectile, which makes it easy for the user to reload ammunition.

Although it may be a little more difficult to clean the chamber if the paper is not burned sufficiently, it may be possible to implement a burst design in advance.