So Huangshi asked, "What does it mean to scan the barcode by computer?"

"Just like the tickets for the "Expo", we have a separate number on each coupon. You can confirm the authenticity by scanning it with a scanner. Moreover, this number is not randomly compiled, but involves an encryption algorithm program."

"Oh, that's it, so when the purple light is shining, will it appear like the RMB, numbers and avatars?"

"Yes, that's it. Anyway, when the purple light is shining, the hidden pictures generated by the fluorescent ink marks are revealed."

After hearing this, Huangshi nodded in his heart. In fact, in theory, no one had the ability to make "counterfeit coins" in the 16th century. After all, they had neither raw materials nor color printing machines. Even if one or two "saints in painting" could really rely on bald pens to copy the money, Huangshi could only admit it.

However, he couldn't tell Qi Ye that he would not have any anti-counterfeiting signs, because that would make Lao Qi suspicious, so he said, "Okay, anti-counterfeiting is based on the two methods you just said. By the way, Lao Qi, I'm worried..."

"What are you worried about? You won't worry about our anti-counterfeiting quality, right?" Qi Ye might have misunderstood, and he said, "If you are afraid that these two anti-counterfeiting effects are not enough, we can also provide you with a pattern anti-counterfeiting."

Qi Ye was afraid that Huang Shi would not understand, so he explained again, "The anti-counterfeiting patterns we wrote on the coupon are a bunch of cubes, but if you take a special PVC outlet and press it, it will show a few words. If the printed outlet is not reprinted clearly enough, these words will not be displayed."

After hearing this, Huang Shi shook his head and said, "No, I am not worried about anti-counterfeiting, because according to your vouchers, the anti-counterfeiting technology is no less than real money. What I am worried about is whether it is waterproof or not, and whether it will fade. This is the most important thing."

When Lao Huang was washing clothes several times, he pulled the banknotes in his pocket. However, when he was drying his clothes, he found that he just put them in a cool place and after the water evaporated, it felt like it was as new as the old. If he changed to other advertising pages, he would be soaked in water and turned into rotten after a few more rubbing.

"Haha, Lao Huang, I just told you that our paper raw materials are high-end enhanced anti-counterfeiting paper, which is not only high in hardness but also waterproof. However, anti-counterfeiting paper is just relative, and it will still rot if you rub it hard. As for the fading issue you mentioned, I will tell you the truth, including the real money we use now, they will fade, but this fading is based on decades and hundreds of years."

Looking at Lao Huang on the opposite side, he seemed to be a little unbelievable, Qi Ye continued, "Old Huang, otherwise why do you think our country will recycle old banknotes and reissue new banknotes every ten or twenty years. That's the reason."

Huangshi only said "oh" because Lao Qi mentioned the issue of new banknotes and recycling of old banknotes. When he was considering the currency a while ago, he studied these processes. What Qi Ye said was only one of the small reasons.

In fact, the replacement of banknotes is simply an experience that every country has had. The most important reason is to adapt to the anti-counterfeiting requirements of the new era and improve anti-counterfeiting technology to achieve the fundamental purpose of anti-counterfeiting. Of course, there are also government changes, inflation leading to significant changes in the face value of the bill, etc. As a developed country or a developing country with stable economic conditions, this first is the most fundamental reason.

In addition, there will be different types of paper money in different periods, and different types will be circulated at the same time, and the types are constantly being updated. The methods of recycling old banknotes vary in different countries, mainly three.

First, after issuing new banknotes, it does not announce that the old banknotes will stop circulation, but will not be released after being collected through the bank, gradually reducing the circulation of old banknotes in the market until they are finally recovered. At present, most countries adopt this method. Its advantage is that the transition is stable and has a small impact on society. For example, this method is adopted for the recycling of US dollars.

Second, when new banknotes are issued or a period of time, it is announced that the old banknotes will cease circulation, but for a considerable period of time, they can be exchanged at the issuance or designated banks, and the old banknotes will be invalidated after the exchange period ends. Typically, some countries joining the euro adopt this method, such as Greece, France, Italy stipulates that it is a 10-year exchange period, Portugal has 20 years, and the Netherlands has 30 years, etc.

Third, after the issuance of new banknotes, the old banknotes stopped circulation and were quickly invalidated. A typical example is the second edition of the RMB "Su Sancoins", that is, the 53 edition of 3 yuan, 5 yuan and 10 yuan, which only lasts a short month from notification to invalidation. For example, the new banknotes in Vietnam in 1978 were issued, and the old banknotes were exchanged for only 3 days, and all of them were invalidated if they expired.

Therefore, the replacement and recycling of banknotes in various countries is a very common phenomenon. The time for the replacement of each country is not uniform. It is about 10-15 years in a cycle, and most countries will change the version once. Of course, there are a few countries in modern banknotes, such as China's third edition and West Demark for 30 years. This will also depend on the actual situation of the country.

...

Seeing Lao Huang just said "Oh", Lao Qi knew that he didn't believe it, but he didn't have any more explanation this time, just said, "The vouchers we printed are not much worse than real money. You can rest assured that it will slowly turn yellow and dark little by little after decades."

After Qi Ye finished speaking, he slapped the table again and said, "The specific one is probably like this. How about it, Lao Huang, do you still have any questions?"

Huang Shi "hmm" a moment, looked at Qi Ye and said, "By the way, do you think that high-end anti-counterfeiting paper is the same as banknote paper?"

Qi Ye lamented in his heart, wondering why Lao Huang had to be so obsessed with the texture of paper. In the past, customers who made vouchers had never asked for it. However, he had to say that he had to say, "If you don't say too much, you can't buy the real money anti-counterfeiting paper you want. You have nowhere to buy it. And if you make vouchers, I can't print it for you based on real money."

After hearing what Lao Qi said, Huang Shi felt unsure of his mind, so he asked Qi Ye, "Okay, Lao Qi, then is there any ready-made ones in your factory now? Let me see first?"

"Do you talk about anti-counterfeiting paper? No, this thing is used too little." Seeing that Lao Huang looked unbelievable, he said again, "We don't have this kind of anti-counterfeiting paper in our factory now. Lao Huang, if you really want to see it, that's it. Come here tomorrow morning and I'll ask you to get a few styles for you to see. How about it?"

Huangshi was a little embarrassed because he would accompany Ning Fan to Guangxi tomorrow, so why would he have time to come? If this matter is delayed for a few more days, the New Year's Day in 2014 will come, so he is not going to break his promise and be fat.

"Let's do this, Lao Qi, can you just get it now? I'm going to do a few things now. When I come back in the evening, I'll treat you to dinner. Can we talk while eating?"

"Okay, then I'll send someone to get it. Let's see you later." Qi Ye originally wanted to tell Lao Huang that he would go home to accompany his wife. After all, his wife is pregnant now, and he has to go back to accompany her for a walk every day. However, seeing Lao Huang seemed very anxious, he had to agree to this request.

...

When Qi Ye called the home and thought about how to explain to his wife, Huangshi had already left the door of the "Pre-Qin Seal Service" and drove straight to his parents' home. When he returned home, his parents were naturally overjoyed. His mother also asked his father to go to the supermarket to buy more dishes he liked, preparing to celebrate his smooth return from Canada.

However, Lao Huang obviously disappointed his parents. He stopped his father who was about to go out and said that there were still some urgent matters to deal with in the past few days and that he would wait for a while before he could go home. Then he took out all kinds of gifts he bought for the two elders in Canada. Then he drove away in a car with his parents' reluctance to look.

Huangshi drove the car and visited several relatives and friends, such as his cousin Jiang Hualong and Dr. Chen Lishui. After calling to inform him in advance, everything went smoothly. He presented all kinds of gifts they bought in Canada one by one, and refused their dinner invitation.

But at the end, when he was about to find his old classmate Wu Guangzhu, he found that no one answered the phone after calling. After calling several times, he still had no answers. He shook his head, "What the hell is this old pig? You won't be going to participate in COSPLAY again."

Thinking of the various COSPLAYs that Lao Zhu has participated in, Huang Shi couldn't help but feel funny from the bottom of his heart. He doesn't look like the prince when wearing a dragon robe. For example, he likes to wear the uniform of the "National Army" most to take photos. Unfortunately, no matter how well he put the uniform, he doesn't look like "Chu Yunfei", but more like "Xiao Er" in "The Protagonist and Supporting Character".

No one answered the phone, and Huangshi had to drive the car to the "Han and Tang Cultural City". Laozhu's "ancestral" antique shop was opened here. It was already evening. It was a good time for nightclubs and shops to open business in this area. So when Huangshi got off the car, he could see ladies of all kinds floating by in front of him.

Unfortunately, in this most prosperous period, Huangshi saw that Lao Zhu’s antique shop was locked by an iron general, and the room was covered with dust. Could it be that the store could not be opened?
Chapter completed!