I was chased by my sickly junior brother who had two lives

In Qing State, Chen Jia and Chen Jue, with their excellent business acumen, developed the silver bill business very well. With the widespread use of silver bills in commercial activities, their convenience was highly praised by all parties. However, as the tree is tall, the wind is attracted. They soon discovered that counterfeit silver bills appeared in the market. This situation was like a huge rock thrown into a calm lake, breaking the steady rhythm of their business layout.

On this day, Chen Jia and Chen Jue were discussing the bank's new business development plan in the study room. The bank's old shopkeeper rushed in with a worried look on his face: "Duke, Madam, something terrible has happened! We found counterfeit banknotes!"

Chen Jia and Chen Jue's faces instantly turned serious when they heard this. Chen Jue hurriedly asked, "What happened? Tell me in detail."

The old shopkeeper calmed down and said, "Today, a merchant came to the bank to exchange silver bills. The clerk in charge of checking found that the feel and paper of the silver bill were a little strange. After a closer look, although the pattern and text were somewhat similar, the anti-counterfeiting secret marks and special textures did not match, so it was confirmed that it was a fake silver bill."

Chen Jia frowned and said, "Too true! Forging silver bills is a serious crime. It not only harms our interests, but also disrupts the entire financial market. We must find a countermeasure as soon as possible."

Chen Jue nodded, his eyes firm. "My lady is right. We must first find out the circulation range and counterfeiting methods of these fake silver bills, so that we can find the right remedy. Shopkeeper, go investigate immediately to see where else the fake silver bills have been found, and in which transactions these fake silver bills mainly appear."

The old shopkeeper took the order and left. Chen Jia paced back and forth in the study, thought for a moment and said, "Sir, it seems that our previous anti-counterfeiting technology is not perfect enough, allowing criminals to take advantage of it. We must increase and improve the anti-counterfeiting process to make it difficult to forge silver bills."

Chen Jue agreed: "Madam, if you have any ideas, just tell me, and we can find a solution together."

Chen Jia pondered for a moment and said, "First, the paper used for the banknotes must be more special. The mixed paper of mulberry silk and hemp fiber we used before has a certain degree of anti-counterfeiting properties, but it seems that it is not enough. We can look for rarer materials, such as adding plant fibers that are only found in specific regions to the paper, and change the production process to make the texture of the paper more unique and difficult to replicate."

Chen Jue nodded and said, "That's a good idea. What about the anti-counterfeiting of the patterns and text on the banknotes? Madam, do you have any new ideas?"

Chen Jia's eyes flashed with wisdom: "We can use multi-layer overprinting technology to print patterns and texts of different colors and levels in multiple times. Each printing plate will have slight differences, and only through special comparison methods can the authenticity be verified. In addition, for the text part, we use a special ink. This ink shows one color under normal light, and another color after applying a specific potion. It is used for internal verification of the bank."

After hearing this, Chen Jue couldn't help but admire: "Madam's idea is really brilliant. And the anti-counterfeiting secret mark needs to be further improved."

Chen Jia went on to say, "That's right. Anti-counterfeiting secret marks can no longer be limited to simple characters or symbols. We can design a dynamic secret mark, such as changing the position and form of the secret mark every day or every month according to the date or specific coding rules. Only the internal staff of the bank can know the secret mark information of the day through a specific manual or password."

While the two were discussing, the old shopkeeper hurried back: "Duke, Madam, after an urgent investigation, we found that these fake silver notes were mainly circulated in some trade markets in the south of the city, and the transactions involved were mostly between small and medium-sized shops. It seems that the counterfeiters do not dare to release fake silver notes on a large scale."

Chen Jia thought for a moment and said, "It seems that the counterfeiters also know that this is illegal and dare not be too ostentatious. But we can't take it lightly. We must introduce new anti-counterfeiting technology as soon as possible to curb this trend of counterfeiting."

Chen Jue turned to the old shopkeeper and said, "Shopkeeper, you must immediately gather all the clerks in charge of the bank's banknote business and have them be alert and carefully identify every banknote that comes to be exchanged. At the same time, issue a notice to inform merchants of the recent appearance of fake banknotes and remind them to be cautious when accepting banknotes in transactions."

The old shopkeeper took the order and left. Chen Jia immediately started to contact paper craftsmen, printing masters, and pharmacists who were good at researching special inks.

After the paper craftsman arrived, Chen Jia explained the requirements of the new paper to him in detail: "Master, this time we need you to make a very special kind of paper. On the basis of the original paper, we need to add a plant fiber called Qingtan grass. This grass grows in the deep mountains on the border of Qing State and is extremely rare. In addition, during the production process, we need to use a new interweaving process to make the paper form a unique water-like texture, which has different light and shadow effects when viewed from different angles."

The paper craftsman looked embarrassed and said, "Madam, this qingtan grass is extremely rare, and I have never tried the new weaving technique. I am afraid it will take some time to figure it out."

Chen Jia encouraged him, "Master, this matter is extremely important. Just go for it. We will fully support you in providing the materials and manpower you need."

At the same time, Chen Jue discussed the details of the multi-layer overprinting technology with the printing master: "Master, this multi-layer overprinting not only needs to ensure the precise alignment of the pattern and text, but also needs to play with different colors of ink. For example, the first layer uses ordinary ink to print the outline of the pattern, and the second layer uses fluorescent ink to print the key details. This fluorescent ink can only be seen under a specific wavelength of light."

The printing master pondered for a moment and said, "Duke, the mixing of this fluorescent ink is a difficult problem. It requires some special materials and has high requirements for printing equipment and technology."

Chen Jue said: "Master, we will try our best to find materials. As for equipment and technology, please feel free to ask for any requirements. We must ensure the feasibility of this technology."

After the pharmacist arrived, Chen Jia said to him: "Pharmacist, we need a special ink to write the text on the silver note. This ink appears black under normal light, but after applying a special potion, it will turn red. Moreover, the formula of this potion must be kept strictly confidential."

The pharmacist nodded and said, "Madam, rest assured. I will try to mix several special plant juices and mineral powders and strive to develop ink and potion that meet the requirements as soon as possible."

While all parties were working intensively, Chen Jia and Chen Jue were also not idle. They personally participated in the testing of the new anti-counterfeiting technology and constantly put forward suggestions for improvement.

After several days of hard work, the new anti-counterfeiting process finally took shape. Chen Jia took a banknote made with the new anti-counterfeiting process and looked at it carefully: "My husband, look at this paper. After adding the fiber of the euphorbia cerasifera, the texture is more tenacious, and the water-like texture is clear and unique. The multi-layer overprinted patterns and texts are brightly colored and clearly layered, and the details of the fluorescent ink are clearly visible under certain light. And the text written in this special ink has a significant color change after being applied with the potion."

Chen Jue took the banknote, examined it carefully and said, "Madam, the anti-counterfeiting technology has indeed been improved qualitatively this time. But we still have to train all the staff of the bank and the silver shop to make them familiar with the new anti-counterfeiting identification method."

Therefore, Chen Jia and Chen Jue gathered the staff of money shops and silver banks and personally explained the new anti-counterfeiting technology and identification methods to them.

"Look everyone, if you hold the paper of this silver note up to the light, you can see a unique water pattern texture, which cannot be forged. Moreover, if you shine this special flashlight on it, you can see the details printed with fluorescent ink. Also, when checking the text, you need to lightly apply a special solution. Once it changes color, it is a real silver note." Chen Jia demonstrated patiently.

The staff studied carefully and expressed that they would remember these identification methods.

After the new anti-counterfeiting banknotes were launched, Chen Jia and Chen Jue also strengthened market supervision and crackdown on counterfeiting. They cooperated with the government to set up a special inspection team to patrol various commercial areas and crack down on counterfeiting banknotes immediately once they were found.

With the implementation of new anti-counterfeiting technology and the strengthening of crackdown efforts, fake silver bills on the market gradually disappeared. Chen Jia and Chen Jue successfully defended the reputation of silver bills and the stability of the financial market, and their business empire became more stable.

After experiencing this storm, Chen Jia and Chen Jue knew that anti-counterfeiting work could not be slackened. They decided to regularly upgrade and improve the anti-counterfeiting technology of silver bills, always stay ahead of the counterfeiting methods of criminals, and escort the commercial prosperity of Qing Kingdom.