After landing on the island, the fisherman was very curious about everything. When he saw the cement brick wall, he tried hard to pick it with his hands, but he didn't pick off a single piece. What surprised him even more was that the bricklayers were actually tiling the exterior walls.

The tiled house sparkles in the sunlight and is so beautiful that those who follow the fisherman wonder if it is for people to live in.

The only people who followed Li Xiao to the island were the fishermen and their more than 140 people. More than half of them are women and children! The rest of the craftsmen need to be entrusted to Chen Fu to select and send them in batches.

When the fishermen came to the island, the first thing they did was to take a bath. Living in a poor hygienic environment for a long time has caused lice on their bodies.

After a hard bath with soap, they moved into a quarantine area down the mountain. They need to quarantine here for a few days until the lice are washed before they can go up to the mountains. This is the rule set by Li Xiao in order to prevent the spread of parasites.

The tattered clothes on his body were thrown into the fire and burned, and when they were burned, they could still hear the sound of "crackling", as if they were setting off firecrackers during the New Year.

Each of them wears a dress made by the girls of the garment factory! Clothes, pants, shoes, nothing is missing.

If it doesn't fit, it can also be changed on the spot, for example, the sledgehammer needs to be measured and re-made. Those little kids, too, need to do it all over again. There were no clothes for children on the island! Xiaoyu and Li Hao's clothes were all hand-sewn by Sister Qiao'er.

After settling down the fishermen and them, Li Xiao plunged into the factory that had just been completed. In accordance with Li Xiao's requirements, various equipment has been cast. In order to rush to work as soon as possible, Zhao Tiezhu hadn't slept well for a few days.

The ore that Li Xiao asked the fifth master to buy back was called pyrite ore, which can make sulfuric acid.

The first step in making sulfuric acid from pyrite is crushing, which first crushes the ore into small particles. A huge steel mill made of refined steel in the blast furnace is propelled by several bullocks. Crush large pieces of ore into sand-like particles.

Huge sieves filter out the chunks and re-crush them, and the qualified ones are thrown into the boiling furnace. The wind was strong at the top of the mountain, and the bottom of the boiling furnace was facing the sea, and the sea breeze brought in oxygen. Better than a blower!

The pyrite is roasted in a boiling shape in the furnace, and the boiling steam enters the cooling tower. Li Xiao checked the residue from the roasting, and it was very good! The residue is black, this is ferric oxide! This proves that the furnace temperature is very high and less oxygen enters it. In this way, the ore utilization rate will be very high, and more sulfuric acid can be refined.

After entering the drying tower, Zhao Tiezhu quickly opened the vent under the drying tower. Let the sea breeze carry a large amount of oxygen into the drying tower. Sulphur dioxide gas, which encounters a large amount of oxygen, enters the cooling tower.

Li Xiao does not have defogging equipment, so he must wait for natural cooling at this time. After cooling, Li Xiao obtained dilute sulfuric acid, and after the dilute sulfuric acid was absorbed, look at the thick liquid flowing out of the glass tube. Li Xiao knew that he had obtained 93 percent of the concentrated sulfuric acid.

I found a small wooden stick and stuck it into the concentrated sulfuric acid in front of everyone. But in the blink of an eye, the little stick turned into charcoal.

"If you don't want to live, let this thing stain your skin." Li Xiao smiled sympathetically, and Zhao Tiezhu quietly took a few steps back, trying to distance his body from this terrifying thing.

It would be good for them to know the horror of this kind of thing, and it might be able to save their lives in the future.

With sulfuric acid, making nitric acid is easy to say. As long as saltpeter and concentrated sulfuric acid are slightly heated together, nitric acid gas can be obtained. When nitric acid gas is passed through cold water, nitric acid dissolves into the water, gradually forming a high concentration of nitric acid solution.

Thankfully, the glassworks are now able to make glassware, otherwise even if sulfuric acid and nitric acid were made, there would be nothing to hold them.

The synthesis of concentrated sulfuric acid and nitric acid is done in a glassware with tubes on both sides, and Li Xiao is actually very afraid of these two things. If you're not careful, this thing will splash out. As long as it falls on the skin, it will definitely burn.

That kind of pain, Li Xiao didn't even dare to think about it.

The temperature of the two mixed solutions is quite high, but fortunately, Li Xiao has been prepared for a long time. Inside the cooling tank under the glass, start pouring cool water.

The cold water poured in here was already hot when it came out from that side. Li Xiao solemnly warned Zhao Tiezhu that he must fuse it in the case of cooling, otherwise the glassware is likely to be burned. If it shatters and the acid inside spills out, it will be an absolute nightmare.

Degreased cotton has been made as early as a month ago, first boiling cotton with caustic soda solution, and then rinsing with water to obtain it. The fat in the cotton reacts with caustic soda to become soap, and when it is washed, the fat is completely washed away. After the cotton is dried, it is carefully stored. This is an island that is very humid, and if you get any more moisture, it will be white.

Li Xiao pressed the degreased cotton into a glass filled with mixed acid, pressed several thick layers, and used a glass rod to press out the air between the cotton.

After standing in the acid solution and completely absorbing it, Li Xiao took out the nitrified absorbent cotton and rinsed it with fresh water until it could not smell sour. Then put the nitrocellulose into the dilute alkali solution and cook it for an hourglass time, take it out, rinse and dry, and then soak it in the diluted saltpeter aqueous solution for stabilization.

Although nitrocellulose has been stabilized, it is still unstable, flammable and explosive. When the temperature exceeds 40 degrees Celsius. It can be decomposed and spontaneously combusted. Therefore, a certain proportion of spirits must be added to nitrocellulose as a wetting agent during storage and transportation to increase stability.

After a whole day of busy work, Li Xiao was able to get a jar of nitrocellulose.

A piece of nitrocellulose was taken, and as soon as the fire touched the cotton, the whole cotton burst into flames, burning violently like fireworks in the night. Of course, only Li Xiao has seen fireworks.

After burning, the whole piece of nitrocellulose turned into fly ash. If there were no burns on the concrete floor, everyone would think that there had never been a fire.

For this combustion rate, Li Xiao is very satisfied. The principle of gunpowder is actually similar, that is, it burns violently in a limited space. That's how the explosion actually happened!

The more intense the burning, the higher the intensity of the resulting explosion.

With this kind of thing, those black powders that used to be no longer worth mentioning. During the second attack on Zhenjiang Fort, a grenade that shone brightly. With the blessing of this thing, it will become even more destructive.

How powerful it will be, Li Xiao is very much looking forward to it.

PS: Thank you book friends for finally having time, you can really do whatever you want if you look handsome! Your support is the biggest motivation of Lao Long, thank you! Thank!