Judging by the time, Li Mu should have returned to Luoyang. The shipyard in Luoyang is waiting for him to start work. The parts for each branch have basically been completed, but assembling a ship as big as Wanshi, who has never done it before would dare to start.
?If it fails to be installed, the responsibility is too great. The labor and materials consumed before and after are at least hundreds of thousands of dollars. Even a master craftsman would not dare to take this risk.
Ma Zhou has written several times, urging Li Mu to return to Luoyang as soon as possible. Li Mu also wanted to go back, but the matters in Chang'an have not been settled yet, so he had to stay a few more days.
What Li Mu was talking about did not refer to the marriage. To him, this incident could only be regarded as a small episode.
The problem Li Mu wants to solve is the bank's problem. The previous transaction with the Taiyuan Wang family is also included.
In fact, Li Mu has already been working on the bank problem. The glass chips from the Sihai Gambling House were his tentative step. Now the glass chips have become hard currency, within the Tang Dynasty, and even on the Silk Road outside the Tang Dynasty,
Glazed chips can be used as money. This already has the function of currency, but after all, glazed chips can only be used in large amounts. For ordinary people, they may have never seen enough glazed chips in their lives.
Chip money.
Therefore, Liuli Chips are not a currency that Li Mu had in mind.
Paper money, it has to be paper money.
Now that the glass chips have been accepted, the matter is half done. At least he no longer has to explain to the people how the banknotes are used. The problem can be solved with the same sentence as the glass chips.
The biggest problem facing banknotes is anti-counterfeiting.
There is no absolute anti-counterfeiting in this world. Even in the era before Li Mu traveled through time, there were still some counterfeit banknotes circulating in the market. Countries all want to put an end to counterfeit money, but facts have proven that this is impossible. Until the line
With the popularity of payment in the world, people are using less and less banknotes, and the situation has changed significantly.
If Li Mu were a person of this era, he would not be able to do better. But he now has a unique advantage. That is his knowledge that transcends thousands of years. He has used all the anti-counterfeiting methods hundreds of years later.
, people nowadays want to crack it, it will take at least several decades.
Li Mu thought that in a few decades, he would have become a scumbag. By then, what would happen if the floods hit the sky? Children and grandchildren would have their own blessings, and there was no need to worry about that time.
To prevent counterfeiting of banknotes, we need to start from two aspects. One is the material of banknotes. The other is the method of printing. All anti-counterfeiting methods can be classified between these two. For the anti-counterfeiting of banknotes, printing is the first step.
I have already accumulated a lot of experience when I bought tickets in Chang'an.
When making paper, the thickness of the pulp changes differently, and a watermark can be made. For ordinary anti-counterfeiting, watermarking is enough. Firstly, the process of making a watermark is not something that ordinary paper mills can complete. Furthermore, the secret mark can only be made internally.
The personnel know that even if it is technically possible to forge the secret message, most of the time it cannot be forged. If it can be forged, then there is an insider. There are not many people in the bank who have access to these secrets, so it is easy to find them.
This set of anti-counterfeiting technology can almost prevent 80% of counterfeiting on the market. But this is far from enough. In order to have a complete strategy, Li Mu came up with another magic weapon. To put it simply, it is a seal.
Ancient seals are not printed and made on later e-commerce platforms. No matter how many are made by laser burning, they will be exactly the same. The seals are hand-carved with a carving knife because of the traces of the carving knife on the stone.
The crack lines cannot be the same, and they naturally have anti-counterfeiting effect.
A two-pronged approach makes it even more difficult to imitate. But even so, it is still not perfect. Because whether it is a watermark or an engraving, a certain level of inspection is required to see it. If it is operated in a bank, there is definitely no problem.
But what if it is a private transaction? There is no guarantee that every ordinary person can check it and understand it, right? Therefore, there must be a method that ordinary people can understand at a glance.
Li Mu called Feng Si here today just to ask him if the current paper-making methods can provide new ideas.
Feng Si was one of the first people to follow Li Mu. He devoted himself to the study of papermaking and had little contact with other people. He did not appear in front of Li Mu many times, but every time Li Mu gave him a task, he could basically do it.
Finish.
This is a person who likes to study. Others give up after a few attempts and fail, but the word "give up" is not in his dictionary. He is easy to study, and it takes time to study it out.
"Master Hou, the villain's idea is to start with technical means." As he spoke, he took out a piece of paper, placed it in front of Li Mu, and said: "Master Hou, please take a look, this is a new product of the paper mill, specially made.
Hemp paper, this kind of paper, is not currently available on the market.”
"The same goes for ink." Feng Si took out a small porcelain bottle and said, "This is the newly prepared ink, and the color is also unique."
Feng Si put the ink on the paper and said: "The latest paper, plus the latest ink, plus the original watermark and seal to prevent counterfeiting, I think it's completely safe."
Li Mu picked up the two things, looked at them, and said: "This is true for a short period of time. However, this technology is just difficult to imitate, not that it is impossible to imitate. Our banknotes are anonymous, and the person who recognizes the vote is not recognized. When you see the vote, you can
The anti-counterfeiting requirements for banknotes are much higher than those for Changan bills."
"It's not like recognizing the check and identifying the person. There is a reserved signature and a secret seal, which is enough to prevent people from forging it." Li Mu said solemnly: "But if our banknotes want to be circulated among the people without going through banks,
Most of the methods are useless, so we can only work on printing banknotes."
To meet the requirements Li Mu said, a decisive sign is that ordinary people must be able to tell the authenticity of banknotes.
Don't underestimate the people of the world. The Tang Dynasty had a vast territory and too many craftsmen. Even Wang Xizhi's "Lanting Preface" could be faked, let alone a small banknote?
Li Mu never believed that there was anything that couldn't be imitated!
As long as this thing is made by one person, then there must be another person who can make it. The role of banknotes is currency. Driven by huge interests, countless people will take desperate risks. If they cannot tell the difference, they will eventually lose money.
It's still a bank, and its credibility is gone.
We must nip the danger in the cradle!
Don’t let the master counterfeiters be deterred and give up the idea of counterfeiting. I believe that there will soon be countless counterfeit banknotes flowing into the market.
Ordinary people cannot receive every banknote, so they go to the bank to verify the authenticity. When they find out later that they have received fake banknotes that cannot be redeemed, they will definitely be furious.
If there are too many such things, who would dare to accept and use banknotes in daily transactions? The idea of promoting nationwide banknotes will also die.
If Li Mu couldn't control the right to issue banknotes, why would Li Mu bother so much?
…
Li Mu asked about Feng Si just to understand the current level of anti-counterfeiting, but in fact, he had already made preparations.
"I also have some preparations here. Come and take a look and see if you can imitate it." Li Mu said this, but his expression was confident. As he spoke, he took out a few pieces of white paper from his arms and placed them on the table.
The person on the cover is an industry insider and deals with paper every day. When he saw the paper Li Mu took out, his eyes lit up and he quickly looked at the paper carefully. As soon as he got the thing, the person on the cover couldn't help but exclaimed: "It feels really good, it's very scratchy."
It’s quite scratchy.”
"Really tough."
Li Mu also folded the paper, but there was no crease.
"Tear it up again." Li Mu said to Feng Si, and Feng Si twisted the two ends of the paper to tear it, but it took a lot of force to tear it out of shape.
"I can't tear it open. How is this paper made?"
Li Mu smiled slyly and said, "This is a corporate secret."
He asked someone to bring over a basin of water and soaked the paper in the water.
As a result, after being soaked for a long time, the paper was not deformed or damaged.
Finally, I took out a fire twister and burned a piece of paper. The result was that it only smoked and burned, but no fire appeared...
"I believe that within a few decades, no one will be able to imitate this kind of paper." Feng Si was completely convinced and said, "It would be perfect to use it to print banknotes."
Of course it is suitable. This is the money printing paper that Li Mu spent a lot of effort to experiment with. Although it is not comparable to the banknotes before he time traveled, it is at least a thousand years ahead of this era!
Wouldn't it be a joke if a thousand years of wisdom were discovered by someone in just a few decades?
It’s not on the same level at all!
Unlike the bamboo pulp used to make paper at this time, wood pulp only accounted for half of the raw materials for banknote printing paper, and the remaining 95% was cotton linters. In today's Datang Dynasty, only Gaochang has this kind of cotton linters.
, most of the cotton in Datang was used for official purposes. So in terms of raw materials, it could actually be controlled.
Cotton linters are also called ‘cotton linters’, which are the remaining fibers on the cotton seeds after ginning.
Because nutrients are more easily transported into the linters, the cellulose content of cotton linters is much higher than that of normal lint. Therefore, paper made from cotton linters is very tough, difficult to tear, and is not afraid of water... In addition to being used as currency paper
, it is also the main raw material for making nitrocellulose.
Moreover, Li Mu also added an appropriate amount of lime powder to the cotton pulp used in papermaking. This lime powder is very magical. Not only can it be used to burn cement, it can also eliminate acidic substances in the paper, turning it into acid-free paper!
The reason why paper loses strength and fades is because of acidic substances. After neutralizing it with calcium carbonate, you can get so-called permanent paper, which makes the paper stronger, more flexible and does not fade.
This kind of 'pure cotton acid-free paper' has fine transitional layers during printing, excellent expression of texture coating, and can print more complex and delicate patterns, which is beyond the reach of other papers at this time.
Rome was not built in a day, nor can pure cotton and acid-free paper be made in a day.
In fact, when Li Mu was still in Lantian, he had already asked Feng Si to dispatch several paper-making craftsmen to secretly develop this kind of pure cotton acid-free banknote printing paper in the Lantian County government office. It was not on the same level at all!
Unlike the bamboo pulp used to make paper at this time, wood pulp only accounted for half of the raw materials for banknote printing paper, and the remaining 95% was cotton linters. In today's Datang Dynasty, only Gaochang has this kind of cotton linters.
, most of the cotton in Datang was used for official purposes. So in terms of raw materials, it could actually be controlled.
Cotton linters are also called ‘cotton linters’, which are the remaining fibers on the cotton seeds after ginning.
Because nutrients are more easily transported into the linters, the cellulose content of cotton linters is much higher than that of normal lint. Therefore, paper made from cotton linters is very tough, difficult to tear, and is not afraid of water... In addition to being used as currency paper
, it is also the main raw material for making nitrocellulose.
Moreover, Li Mu also added an appropriate amount of lime powder to the cotton pulp used in papermaking. This lime powder is very magical. Not only can it be used to burn cement, it can also eliminate acidic substances in the paper, turning it into acid-free paper!
The reason why paper loses strength and fades is because of acidic substances. After neutralizing it with calcium carbonate, you can get so-called permanent paper, which makes the paper stronger, more flexible and does not fade.
This kind of 'pure cotton acid-free paper' has fine transitional layers during printing, excellent expression of texture coating, and can print more complex and delicate patterns, which is beyond the reach of other papers at this time.
Rome was not built in a day, nor can pure cotton and acid-free paper be made in a day.
In fact, when Li Mu was still in Lantian, he had already asked Feng Si to dispatch several papermaking craftsmen to secretly develop this pure cotton, acid-free banknote printing paper in the Lantian County government office.
Ordinary people cannot receive every banknote, so they go to the bank to verify the authenticity. When they find out later that they have received fake banknotes that cannot be redeemed, they will definitely be furious.
If there are too many such things, who would dare to accept and use banknotes in daily transactions? The idea of promoting nationwide banknotes will also die.
If Li Mu couldn't control the right to issue banknotes, why would Li Mu bother so much?
…
Li Mu asked about Feng Si just to understand the current level of anti-counterfeiting, but in fact, he had already made preparations.
"I also have some preparations here. Come and take a look and see if you can imitate it." Li Mu said this, but his expression was confident. As he spoke, he took out a few pieces of white paper from his arms and placed them on the table.
The person on the fourth cover is an industry insider who deals with paper every day. When he saw the paper that Li Mu took out, his eyes lit up and he quickly looked at the paper carefully. He just bought the thing, and the four people couldn't help but couldn't receive every banknote.
So I ran to the bank to check the authenticity. When I turned around and found out that I had received a fake banknote that could not be redeemed, I must have been furious.
If there are too many such things, who would dare to accept and use banknotes in daily transactions? The idea of promoting nationwide banknotes will also die.
If Li Mu couldn't control the right to issue banknotes, why would Li Mu bother so much?
…
Li Mu asked about Feng Si just to understand the current level of anti-counterfeiting, but in fact, he had already made preparations.
"I also have some preparations here. Come and take a look and see if you can imitate it." Li Mu said this, but his expression was confident.