It can be seen that craftsmen now use the iron mold method to cast cannons. Dozens of craftsmen are busy and divided into several tasks. Some are preparing the slurry, some are pouring the molten metal, and some are responsible for the huge lifting device, each with its own process.

There are about six steps in this iron mold cannon casting method. When casting the cannon, first brush the inside of each flap of the iron mold with two layers of slurry. The first layer of slurry is made of fine rice husk ash and fine sand mud. The second layer of slurry is made of

Made from the finest fine kiln coal mixed with water.

Then the two halves are brought together, the iron hoops are tightened, and they are heated step by step, and then the molten metal is poured. After the molten metal is poured enough and cooled to form, the iron mold is peeled off in the order of the mold halves, just like peeling off the shell of a bamboo shoot.

Gradually expose the cannon body, and then remove the mud embryo in the cannon core, and the iron cannon is ready. It is much faster than the clay model method and the lost wax method.

Today's artillery uses current drawings, and there is no advantage in performance. Li Yi wants artillery that can give him an advantage, so he still pays more attention to the research progress of the Ordnance Institute.

However, after a tour, I realized that only two types of artillery can be produced here, one is the Folan cannon, and the other is the Hongyi cannon that I just saw.

When it comes to the Folan cannon, they have their own advantages and disadvantages compared to the Hongyi cannon. However, the Hongyi cannon has the advantage of range, while the Folan cannon is convenient and flexible. Judging from the current number of people in the iron brigade, it is still more powerful than the bulky Hongyi cannon.

The Folan cannon is the most suitable, as it can provide timely fire support without being unable to keep up with the marching speed.

Since it was here once, it was necessary to take a good look at the performance of these artillery pieces. Li Yi asked Master Liu to arrange a test and rate the power of the Anxin artillery for himself.

Everyone came to the spacious field behind the artillery factory, and the three Franco machine guns were pulled in. From a distance, several craftsmen first pulled a cannon to the middle of the field, filled it with gunpowder, and then pulled out a long gun.

A long match rope, one person took out the fire rope and lit the match rope.

Then the apprentices hid on both sides to protect their ears, and then they heard a loud bang, smoke filled the air, and the heavy artillery suddenly retreated several feet away before stopping awkwardly.

Looking at the target again, it was also beaten to pieces, and its original appearance could not be seen.

These apprentices often test artillery and have become elite artillerymen, and their accuracy is not bad.

"Artillery preparation."

At the artillery training ground, the apprentices who saw Li Yi personally inspecting and presiding over were all in high spirits. He majestically passed down a series of commands to direct the cannons to aim at a series of targets set in the distance.

Placed in front of Li Yi are the Hongyi cannons, one of which is a six-pounder and the others are three-pounders.

At this time, these artillery pieces were lined up in a row, and the black muzzles were constantly adjusted. In front of one of the observers, there was a pair of shiny gun scopes.

Yes, it is the gun scope. Now that glass has been developed, although it is mainly sold, it is still used for necessary scientific research. Glass is a major boost to the development of optics. Li Yi has ordered people to develop telescopes, magnifying glasses and other tools.

The glass products now seem to be extremely practical.

Just like Li Yi holding a telescope in his hand, the yellow metal surface is exquisitely made and can be lengthened or shortened to adjust the observation distance. Since the first batch of telescopes were small, only Li Yi and a few of them were in the iron brigade.

Only the battalion commander has it.

Artillery requires an effective mechanism, and Li Yi taught them knowledge such as surveying and mapping, so there are a large number of shooting tables produced by live ammunition firing. With this gun scope, the gunner can continuously report data according to the observation officer

, constantly adjusting the muzzle.

Nowadays, in addition to teaching Chinese characters, Anxin also focuses on teaching arithmetic. Therefore, Arabic numerals have slowly become popular in Anxin. The arithmetic skills of some craftsmen and apprentices engaged in technology are also rapidly increasing.

Of course, Li Yi only introduced some Arabic numerals to quickly improve everyone's arithmetic skills. But that is still Western arithmetic. Ancient China had its own mathematical system and its own arithmetic symbol system. It was not about introducing a few Arabic numerals.

Numbers can be used instead.

Moreover, Western mathematics at this time was no better than Chinese mathematics. In terms of Arabic numerals, if you were keeping accounts, in order to prevent tampering, you had to use uppercase numerals to record them again, which increased the burden. Moreover, the calculation ability of Arabic numerals was also a bit worse. In the late Ming Dynasty,

Mathematician Zhu Zaiyu created the square root method of reduction and division, using an 81-bit abacus to calculate the square root using abacus, which can be accurate to 25 digits after the decimal point.

This terrifying amount of calculations, if calculated using Arabic numerals, would take a lifetime to complete. This means that Western mathematics at this time was far behind Chinese mathematics. What Chinese mathematics needs is progress, not abandonment.

"Adjustment is complete, adjustment is complete..."

The voices of the commanders in front of each gun came one after another.

At this time, the artillery establishment of the private sector was a corps of five people responsible for one gun. Among the five people, including an observer, an aimer, several loaders, etc., there was a clear division of labor and its own mechanism. Today, there are a total of 20 artillery corps.

But there aren't many artillery pieces, so they all come here in turns for training.

"put!"

The commanding corps leader shouted loudly!

"Put it, let it go!"

Following the deafening sound of cannons, fierce flames emerged from the muzzles.

As the shells roared, the targets were blown apart one by one.

"Brush the chamber!"

Immediately after the artillery was fired, one loader took a gun brush and brushed the barrel of the gun, then another person loaded*, and another person loaded the shells. Loading, aiming, and firing were done calmly, quickly, and well-trained.

It can be seen that when I left Anxin, the Iron Brigade did not slack off in training.

"Put it back!"

Another burst of shells roared.

The artillery salvo drill was followed by individual artillery firing. The observers and aimers among these gunners all had high experience and could continuously bring out qualified gunners. They would be Li Yi's future artillery instructors.

Seeing that the gunners were well-trained and the "targets" were destroyed one by one, Li Yi also had a smile on his face. Although his artillery did not improve as quickly as the gunfire, it was still developing vigorously. At least it was not hindered by this era.

Down.

When he was thinking about how to get better artillery manufacturing technology, he turned his eyes and suddenly saw someone seemed to be at the crenellation of the city wall in the distance. He looked carefully with some surprise, and then discovered that there was a hundred meters away in the industrial zone.

, a figure is standing on the wall, with the crenels at his feet.

"Master Liu, there seems to be someone over there." Li Yi pointed to the city wall over there and said.

"Is there someone there?" Liu Dajiang followed his direction and looked carefully, and saw a figure on the city wall. Liu Dajiang nodded: "I will send someone to catch that person and ask them who sent them.

of."

Li Yi was also very dissatisfied. If this person was really sent by a big family in Baoding, he wanted to peek into his secrets. He would not let them off easily. Of course, logically speaking, the Gaoyang Rebellion had just ended, and the big people in Baoding should not

He wanted to provoke him so quickly, which made him very strange. He didn't know who sent that person.

As if he felt Li Yi's gaze, suddenly, a long roar came from the city wall. The whistle was clear and clear. It passed through such a long distance. Although it was not loud, it was as clear as the ears. The whistling mountain wind seemed to also be heard.

It cannot have any impact on it.

The annoyance on Li Yi's face suddenly stopped, his expression changed, and he looked in the direction of the city wall with an expression of disbelief. You must know that the city wall where the man was located was far away from them, and it would be difficult for ordinary people to hear him even if he spoke, but

There is such a huge distance, and there are houses in the middle, but a long roar can reach my ears so clearly. This skill is really unbelievable, and it is not something ordinary people can achieve.

Although Li Yi speaks with a voice like thunder, he cannot produce such a strong and powerful voice. This is due to internal strength and has nothing to do with the volume of his personal voice.

"Who is this?" Li Yi was also stunned. If this person can really make such a sound, then his skills are much better than those behind him. You know, except Mr. Li, Li Yi has never seen such a person.

character.

"Master Liu, don't send any more people over..." Li Yi said softly: "That person is not something you can deal with."

Liu Dajiang thought for a moment and understood what Li Yi meant. Li Yi's bravery has been well known to everyone, but now there is someone who makes him so fearful. It seems that Li Yi also finds it a bit incredible.

But when he raised his head, the figure had disappeared. Everything just seemed to be a dream, completely fake.

But looking at the serious expression of the little benefactor next to him, Master Liu still knew that there was indeed someone there just now, a person who could make the little benefactor be afraid.

In the evening, Li Yi went to a Wubao in Baiyangdian.

Due to the terrain, the Wubao was not big and seemed a bit cramped. As soon as Li Yi and others entered, the horses they were riding immediately seemed crowded until the local mayor stepped forward to deal with it and asked people to lead the horses and horses to the side.

Then he settled down in the open space.

He came this time to see Master Chen Hongyan, but Chen Hongyan only mentioned a rough location, but Li Yi needed to abandon his horse and go in to check it out in person.

The sky in the east has just revealed a faint fish-belly white color, and the surrounding valley is silent, with only a gentle breeze blowing. The city walls are empty, and the two brave men responsible for keeping watch stand exhausted at their posts.

Li Yi smiled apologetically, walked to a place where they would not be disturbed as much as possible, and began to practice silently. There was no tiger tooth gun here to practice spear skills. He could only practice boxing, and he was not fast in boxing. There was no noise, except when moving.

Apart from a few footsteps, it wasn't too noisy.

After Li Yi finished practicing his boxing skills, he did a few breaths in front of the red clouds rising in the eastern sky. Then he breathed out gently and completed his daily homework.

"Bah, bang, bang..." There was gentle applause from behind.

Li Yi did not look back immediately, but hesitated for a moment, then slowly turned around and looked at the green woman leaning against the wall with her arms folded in front of her chest. There was an indescribable smile on her face, as if

A little curious, a little gentle, and a little... eager.

Li Yi looked around, saluted the woman, and said, "Miss Qiu Sheng."

The woman in the green dress returned the gift, bowed and said, "Good morning, Mr. Li. I just watched you practice boxing without your consent. I hope Mr. Li will not blame you."

Li Yi smiled and said: "No problem. By the way, where is Hongyan?"

"She is accompanying the master and is not here." Qiu Sheng stood up straight and pointed to a direction in Baiyangdian.

"Then I will accompany you to see your master?" Li Yi said.

Qiu Sheng covered his mouth and smiled, and said: "My master is also a Mohist saw, and the etiquette is still required. You should go back to take a shower and change clothes. My master is already waiting for you. I hope you can treat yourself well."

Let’s talk.”

Qiu Sheng had a smile on his face, but Li Yi was a little surprised.

It turns out that the person who came this time was the Mohist Juzi?! I really didn’t expect that such a mysterious name would appear again after the pre-Qin Dynasty, and I would also meet the Mohist Jiazi from the Ming Dynasty.
Chapter completed!