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Minting is a big deal, Zhao Lian can't not pay attention to it, although the affairs of the special zone are in principle Mao Geng's final say, Zhao Lian can not intervene, but the line of coinage and coinage is very important, there is a lot of knowledge in it, Zhao Lian is very interested in every step of Mao Geng's coinage and line, how can such a good opportunity to learn from be missed!

On the morning of the opening of the coinage, Zhao Lu stayed in the Guogong Bank, and he was already very excited, but he forced himself to press it, and when it was almost noon, he asked people to inform Mao Geng that he wanted to see the entire minting process.

When Chen Man came back, Ye Shi also followed.

Ye Shi saw the salute, and Zhao Lian said strangely:

"Mr. Ye, why are you here with me?"

"Maudt was stumped by a difficult problem today, and was thinking about it at the moment, and he asked me to take a leave of absence from the national government, so that I could concentrate and come up with a solution. As for the coinage, I have been observing and figuring out during this time, and I have a little knowledge of the fur, so I will accompany the Guogong to investigate, although there are differences in Maote coinage, but in fact, there are many similarities, and the difficult points are discussed with each other, how is the national public will? ”

Since Ye Shi said so, of course Zhao Lian couldn't say that he had to be accompanied by Mao Geng, but he didn't know what problem could stump Mao Geng, which was a strange thing, so Zhao Lian became curious and asked:

"Mr. Ye, how difficult is this? actually made Mao Geng stumped! ”

Ye Shi scratched his head a little, and he didn't know whether to say it or not, originally Mao Geng had something to say first, and it was best not to let the outside world know what he was busy with. But since Zhao Lian asked, it was inconvenient to lie, so he could only say the truth:

"I learned from the Guogong that the legend is that Zhuge Liang knew a kind of crossbow called Zhuge Repeater, Mao Geng also heard from his master, Mao Geng suddenly thought about it in the past two days, and also wanted to create a powerful weapon similar to Zhuge Repeater, but Zhuge Repeater is so easy to make, even if Mao Geng has been instructed by his master, it is not easy, so these two days are almost not thinking about tea and dinner, and he is dedicated to the crossbow."

"Oh." , Mao Geng devoted himself to making advanced weapons for the Great Song Dynasty, this kind of thing should be encouraged, at this time, it is naturally good not to disturb, so Zhao Lu was in a good mood, so he followed Ye Shi to see the coinage with great interest.

Mao Geng wanted to build the Zhuge Repeater, if nothing else, Mao Geng felt that before Kang Xiaolu and Ma Wu went to the Kra Isthmus, in order to ensure the success of the operation, they had to be equipped with some combat equipment. Considering that in the mountains and rainforests, continuous firepower is crucial, which was verified in the self-defense counterattack against Vietnam, and it doesn't matter if there are no automatic firearms, Mao Geng thought of a way, that is, a repeater - Mao Geng is ready to equip them with a repeater.

In his previous life, Mao Geng saw the conjecture model of Zhuge repeater on the Internet, the principle is not complicated, but I don't know if it is good to build, it will not work in actual combat, perhaps, this kind of theoretical crossbow that can output continuous firepower is really a melee weapon in the rainforest. In any case, Mao Geng decided to give it a try and make a small batch of these repeaters for them to bring with them as auxiliary weapons for the operation. One, there are not a few weapons at hand, are you embarrassed to call it special operations! Second, even if it is captured by the natives, it is not afraid of technical leaks, the cottage is a copycat, this is not a weapon of mass destruction, what can the enemy do if it is made!

Although the Zhuge repeater is not complicated, Mao Geng is already very busy, and this kind of repeater will be made in just a few days, it must be simple and practical, and it must not be stuck, the performance must be stable, and the power must be passable, which is really a very laborious thing, so Mao Geng is basically able to push it for other things. As a result, Zhao Lu wanted to inspect the silver coin, Mao Geng pushed the matter to Ye Shi, Ye Shi was happy to accept the order, the currency problem was originally something he wanted to supervise, and Mao Geng did not defend Ye Shi, so Ye Shi followed up the whole process, and he was also half a minting expert. However, he said in advance not to reveal the matter of the crossbow to the outside world, but Ye Shi truthfully reported the matter to Zhao Lu as soon as possible.

The stamping and minting process is much more demanding than minting coins, and the process is much more complex.

First of all, the silver-copper alloy ingot was cast, there was not much mystery in it, the only thing was to sprinkle a layer of charcoal chips on the liquid surface when the silver and copper began to melt to prevent oxidation, which can be said, Zhao Lian didn't care about the heat, nor did he care about the cold, and he looked at it casually, so he was not interested.

After that, the silver-copper alloy is rolled repeatedly, and the thick alloy ingots are rolled one by one, from thick to thin, and annealed in the middle to remove internal stress, rolled, annealed, and then rolled, and finally rolled into thin sheets after more than a dozen rolls.

This kind of rolling process, Zhao Lian is not the first time to see, iron-making ships with iron sheets, is also rolled in this way, when Zhao Lian looked, for the thick plate between the two rolls, the roll rolled over, the thick plate became a thin plate, at that time I was still very curious, but I saw it once, this time there was not much curiosity, while listening to Ye Shi's explanation, while walking, hurriedly looked, this process is finished.

The next moment, Zhao Lian came to the main workshop of minting.

Fang Gengshu was concentrating on stamping silver coins on a punch at the moment, and when he heard the voice, his mind was smart, and he knew that it was a big man who had come to inspect the coinage. But Mao Geng explained that he must concentrate on opening the punch, otherwise he will hurt himself if he is not careful.

The blank of the coin that had been rolled high was fed into the die, and the right foot immediately stepped on the stamping pedal, and so on, and so on, and so on, and the stamped silver coin continued to fall into the basket, and in a moment a small mountain was piled up in the basket. Fang Gengshu thought that it would be good if these silver coins belonged to him.

After a while, the bigwigs gathered around Fang Gengshu's stamping station.

In fact, before the last stamping and printing, there are several processes, such as punching the disc blank, rolling out a high side higher than the disc, and then polishing on a centrifugal grinder – a process that Maute calls "descaling", but it is clear that no matter who visits, without exception, they are most concerned about the last stamping and printing process.

Ye Shi walked to the finished basket placed aside, took out a few of the stamped finished silver coins, and handed them to Zhao Luan, Zhao Lu looked at the exquisite coins in his hand, and watched Fang Gengshu skillfully operate the punch press to stamp the silver piping discs one by one into silver coins, well, punched out, it became the appearance of the silver coins in his hand, the size and shape were all the same.

Zhao Lian walked over, from the semi-finished basket to find a semi-finished product, the semi-finished product and the finished product compared, the semi-finished product is a smooth silver disc rolled out of the high edge, the original edge also rolled out of the tooth marks, Mao Geng has introduced before, this is to prevent someone from doing tricks on the silver coin, the more Zhao Lian thinks about it, the more it makes sense, the Great Song Dynasty is a very big forest, there are all kinds of birds, with this toothed thick edge, the lawless will not be able to make a fuss on the round edge of the silver coin, otherwise if it is flat, there will be traitors to cut the edge of the silver, and the silver coin will only get smaller and smaller, In the end, there are big and small silver coins, and then it's messy.

The finished silver coin is shiny, very smooth, unlike copper coins, copper coins will always have flaws such as sand holes, so stamped out of the silver coin, completely called flawless, the most important thing is that all stamped out of the silver coin, each one is the same, I can't see any difference, well, such a coin is called good! On the other hand, the copper coins minted by the imperial court over the years have become worse and worse in quality, ashamed!

Fang Gengshu recognized that the one who was explained was Ye Shi, Ye Shi was already a great person, but it was obvious that the object of Ye Shi's diligent explanation was a bigger person, and finally Ye Shi said the word "Guogong" in his mouth, Fang Gengshu said in his heart, it turned out that it was Guogong Zhao Lu who came to visit, and he suddenly became very excited for no reason.

As soon as Fang Gengshu was excited, the rhythm of his hands and feet was messed up, and if he was not careful, he injured his fingers, but fortunately, Fang Gengshu reacted quickly, and between the lightning and flint, his fingers retreated, and only hurt the tip of his left index finger, which was no big problem. Later, Fang Gengshu admitted his mistake repeatedly, which made Zhao Lian have a good impression of this Fang Gengshu, and since then, Zhao Lian has remembered that Mao Geng's subordinates are owned by a person named Fang Gengshu.

After watching the whole process of stamping and minting, Zhao Lian pondered the stamping and printing all the way, and asked Ye Shi all the way why the silver sheet was like a ball of mud, and the patterns and words were easily printed.

Ye Shi in line with the spirit of a good person to send the Buddha to the west, and then led Zhao Lu to the mold-making workshop, Ye Shi told sù Zhao Lu, in fact, the mold is the key, if there is no Mao Geng's set of mold-making technology, the silver coin can not be stamped out at all, even if it is barely stamped out, the pattern words can not be exquisite.

In the mold-making workshop, what opened Zhao's eyes was that he saw the imitation engraving machine that Mao Geng regarded as a treasure, one side of the imitation engraving machine was a large model, the size was more than ten times larger than the real coin, one end was close to the model, and the other end was carved on the steel mold with a sharp knife head that sù rotated.

This is a mold for carving a one-dollar coin, and it is said that it takes two or three days to carve it. Zhao Lian felt that it was very wonderful, stared at it for a while, and finally reluctantly left, thinking in his heart, this kind of engraving machine is really a god, but don't be learned by the golden people.

So Mao Geng told Ye Shidao:

"Such a wonderful engraving machine, I think it should be placed in a special room, and idle people are not allowed to enter, you go and talk to Mao Geng, I think it is nothing else, it is about coins, you must be careful."

"I also reminded Mao Geng, but Mao Geng said that outsiders just watched it, and there was no way to learn it, and it was not so easy to imitate! So there's no need to worry. ”

When Zhao Lu heard Mao Geng say this, he was relieved and said:

"Yes! If so, that's good. ”