The Last Alchemist

"Blackbeard, more than 30 confidants, gathered more than 500 people, burning, killing and looting everywhere."

Of these words, the first one gave Rosen the most headache.

Blackbeard, a former officer of the Parason Empire and the leader of the defeated soldiers, was his public identity, but in secret, he had a more terrifying identity, that is, he was actually a high-level werewolf.

Werewolves, half human and half wolf, are nearly 3 meters tall, with strong muscles and hard bones. They can easily weigh more than 400 kilograms, are as strong as elephants, and have terrible vitality.

An ordinary werewolf, with a casual swing of a claw, can slap a 400-500 kilogram domestic buffalo flying five or six meters away. The claws can easily smash ordinary swords and knives. Its skin is extremely tough. Ordinary swords and knives can only make a shallow bloody wound at most, and it will heal completely in less than ten minutes.

The high-level werewolf is even more terrifying. Its strength and size are larger than those of ordinary werewolves, and it can freely transform between human and wolf forms. In human form, it is okay. Except for being stronger, it looks not much different from ordinary people, but in werewolf form, he is a flesh-and-blood siege tank!

In the game, since the appearance of Blackbeard, Sunderland Town and the surrounding areas have been in trouble. At the beginning, Blackbeard led his bandits to sweep the villages around Sunderland Town. After the villages were almost destroyed, he also gathered more than 1,000 people. Then, he led these more than 1,000 desperadoes to attack Sunderland Town. After several days of fighting, Blackbeard showed the werewolf form, broke through Sunderland Town, killed the lord Baron Draco, and replaced him as the black lord of Sunderland Town, starting his reign of terror.

In the game, Rosen, as a hunting master, once sneaked into the fallen Sunderland Town and killed Blackbeard. Fortunately, Rosen succeeded at once. His main weapon at the time was the spiral sprayer.

‘Ah~ I’ve been so busy lately that I forgot about this matter. It’s because Sunderland is just a tiny place, and it’s really inconspicuous.’

‘It seems that my weapons manufacturing plan has to be accelerated.’

Thinking in a mess in his mind, Rosen turned and walked towards Savi’s Glass Shop.

In troubled times, everyone just wants to survive, and luxury goods are the least valuable. Now that the defeated soldiers are raging outside Sunderland Town, every family is trying their best to store food. Who has the heart to fiddle with glass?

When Rosen rushed to the glass shop, there was no one in the shop except Savi.

The fat man Savi sat behind the counter with a sad face, and his white and fat big round face was almost wrinkled into a bun.

“Savi, where are your guys?” Rosen asked.

“I can’t afford it, and I fired them.” Savi was listless.

Seeing him like this, Rosen shook the parchment roll in his hand: "I brought a new technology, do you still want to learn it? Let me make it clear first, if you don't learn it, you will be the first to breach the contract, and I won't refund the money."

Savi smiled bitterly: "I would like to learn it, but who has spare money to buy glass these days?"

"The war will always be over."

"Who knows if I can hold on until then, Blackbeard is coming with great force, I don't think even Sunderland Town is safe."

Rosen put the parchment roll on the counter and advised: "I tell you, the mirror grinding process is different from ordinary glass ornaments."

Savi supported his fat chin with both hands, and looked at Rosen weakly: "How is it different? Aren't they all luxury goods? Who would buy this stuff these days?"

Rosen said: "You think, glass ornaments are just for the sake of beauty, it doesn't matter whether you have them or not, right?"

"Well~~~" Savi nodded sadly.

"But the magic mirror is different. In addition to looking at women, the magic mirror can also be used by scouts and sentinels to detect the enemy. With the magic mirror, if the enemy wants to sneak attack, we can see it from a long distance. Isn't this an advantage?"

"Huh?" Savi was refreshed and sat up straight: "Master, what you said makes sense."

The fat man's head began to turn. After turning a few circles, his back drooped again: "No, no, even if I can really make a magic mirror, this thing must be very expensive. Which lord is willing to give this thing to stupid soldiers?"

Rosen reached out and knocked on the counter, cursing: "You are stupid, the cost is high, can't you think of a way to reduce the cost?"

Savi looked confused: "How to reduce it?"

Rosen pushed the parchment scroll towards Savi: "Take it and take a closer look, you will know."

Savi spread out the parchment scroll half-believingly and half-doubtingly, looking at the first page, he saw the title on it was four words: 'Geometric Optics. ’

His heart moved slightly, and he continued to read down, and he saw the sentence "Light can be abstracted into countless straight lines". Next to this sentence, there was an intuitive picture.

Seeing this sentence, Savi's heart was shocked, and he slapped his head with his hand: "Yes, why didn't I think of it?"

He immediately became very interested, and all his energy was devoted to it. After reading a few more lines, he saw another sentence: "Why do chopsticks inserted in the water look like they are broken from the side? Why can't you shoot the fish's shadow directly when shooting with an arrow, but should you shoot it below the fish's shadow? The reason is because of the refraction of light. ’

Savi has rich life experience. When he saw these two sentences and the pictures next to them, he understood it at once. He couldn't help but slap his thigh and shouted: "Exquisite!"

At this point, he had been introduced to the palace of optics by Rosen.

Rosen was not idle either. He closed the door of the glass shop, and then led the distraught Savi to the backyard studio.

When they arrived at the studio, Rosen said to Savvy, "Keep watching. I'll borrow your stove."

Savi didn't even raise his head, his eyes glued to the parchment scroll: "Master, feel free to use it."

Rosen didn't rush to light the fire. He said to Savvy, "Do you have any oil?"

"What kind of oil?"

"Any oil will do." Rosen replied that he took the oil for quenching.

"I have olive oil in my kitchen. I'll get it." Savvy's eyes were still fixed on the parchment. He turned around and his head hit the door frame with a "bang".

Seeing his obsessed look, Rosen stopped disturbing him: "You watch carefully. I can do it myself."

"Well~Okay, okay, wow, it's wonderful~" Savvy's soul had already fallen on the parchment.

Rosen stopped disturbing him. He went to the kitchen to take a look and brought back a small half barrel of olive oil. After taking a look, he found that there were a lot of impurities in the olive oil. He then activated his alchemical power to quickly precipitate the impurities to the bottom of the oil barrel.

After finishing, he put on cowhide heat-insulating gloves, picked up a wooden shovel to add charcoal to the stove, lit it, pulled the bellows, and soon raised the fire.

After the charcoal burned vigorously, Rosen took the tongs, clamped the iron pipe cut off yesterday and put it on the charcoal fire to burn.

This iron pipe is cast and is the worst quality gray cast iron. What Rosen has to do is to process it into a suitable gun barrel.

Processing metal is his old business. When he graduated from college and did an internship, he went to a steel processing factory. After being admitted to graduate school, he was most interested in metal materials. In addition to studying, he looked up information and did experiments. Almost all his free time was spent on this.

‘On Earth, military barrels use high-strength chromium-molybdenum alloy steel. But chromium and molybdenum are rare metals, and I can’t get them now. The barrel of my spiral large spray gun does not require rifling, and the strength requirement of the barrel is not high. As long as the process is proper, ordinary high-strength steel is enough. '

'I need a gun barrel now. The performance of the gun barrel is to be resistant to high temperatures, hard, and have a certain degree of toughness. If it is too brittle, continuous shooting may cause cracks in the metal and cause the barrel to explode. To achieve such performance, I have to arrange the metal structure properly. '

While the iron pipe was still heating, Rosen took out parchment and a quill pen and began to calculate.

For a while, the fat white man Savi was obsessed with geometric optics and mirror grinding, and Rosen was concentrating on designing the desired steel. Neither of them spoke, and the studio was quiet.

After a few minutes, Rosen got the result. He looked up at the iron pipe, which had been burned red by the charcoal fire.

"It's time to start."

Rosen recalled the specific process again in his mind, then activated the alchemical power, slightly gathered oxygen towards the bellows air port, and at the same time, he slowly pulled the bellows.

‘Hu~Hu~’

The charcoal in the furnace gets more oxygen supply, and the temperature begins to rise slowly. After a while, it reaches the melting point of iron. The iron pipe begins to soften and deform, and it is about to melt into molten iron.

‘It’s now. ’

Rosen keeps the furnace temperature unchanged, and the alchemical power entangles it. The tentacles of thought try their best to perceive the structure inside the metal pipe.

He removes the cavities inside the metal, precipitates the excess carbon elements, and rearranges the iron atoms.

It is worth mentioning that when doing this series of actions, Rosen did not forcefully fight against the metal bonds in the iron. He took advantage of the thermal motion of atoms at high temperatures, and achieved the desired results little by little.

This method has advantages and disadvantages. The advantage is labor-saving, and the disadvantage is extremely low efficiency.

It is unknown how long it has been. At this time, Savi is still immersed in the new field of optics, while Rosen exhales lightly and slowly lowers the furnace temperature. After the iron pipe drops below the melting point, he clamps it out with pliers and starts the final heat treatment.

Metal heat treatment is nothing more than annealing, normalizing, tempering and quenching. The quality of heat treatment has a great impact on the final performance of the metal. The same material, due to different heat treatment, has a world of difference in the final performance.

Rosen is not a professional worker after all. Although he has the theory, his practical skills are very unfamiliar. But it doesn't matter. He has the power of alchemy and can always sense the internal structure of the metal. Once the situation is not right, he can make adjustments at any time.

Just like this, trial and error little by little, about an hour later, a 45 cm long, 2 cm inner diameter hollow iron pipe appeared.

This iron pipe is dark black, smooth on the surface, cold to the touch, the inner hole is very round, the lines are so precise that it is difficult to describe. When you flick it lightly with your fingers, the sound is dull and crisp. Just by looking at this appearance, it is enough to make people feel its extraordinary.

Rosen was happy: 'The most critical parts are the barrel and the bullet. Now that the barrel is available, other parts can be easily completed. As for firing bullets, this is not difficult. The spiral big spray gun is 70% completed. "

He was also exhausted. After carefully putting away the barrel of the gun, he sat by the fire to rest and recuperate. After sitting for a while, when he felt his energy was slightly restored, Rosen took out the parchment again and began to record his entire operation process.

This step was not necessary, but a habit that Rosen had developed on Earth. As long as it was a successful experiment, he always felt that something was missing and he was uncomfortable without writing it down.

Just after writing for a while, the fat white man Savi, who had been studying hard, suddenly trotted forward a few steps, then knelt down in front of Rosen with a "thump", and shouted: "Master! Master! Please accept me as your disciple!"