Song Zhewu understood that one of the most important conditions for Jia Jiying to turn Jin banknotes into the most important currency in the north was that his currency should be credible, and counterfeit banknotes were the most serious challenge to his currency credibility.

Now the anti-counterfeiting measures of Jin banknotes are very simple, not to mention that powerful large companies can imitate, that is, people who know some coinage technology, as long as there are enough materials can also be made. If someone makes a large number of counterfeit banknotes, it will not only cause huge losses to the economy of the area controlled by Song Zhewu, but also lead to the depreciation of Jin banknotes and inflation, and may even trigger another full-scale run, making his reputation completely bankrupt.

Therefore, it is imperative to revise the Jin banknote.

Although Song Zhewu does not know too many anti-counterfeiting measures for banknotes, but those coinage experts understand, but this is only a general surname measure, Song Zhewu's specialty is to manufacture colored fibers and colorless fluorescent fibers, these two fibers will not appear until 40 years later.

In addition, there is another aspect of the new Jin banknote that no one else can imitate, that is, Song Zhewu used pearlescent ink, which was also difficult to produce decades later, to print his new banknote.

As a result, on the new version of the 100, 50, 10, and 5 yuan banknotes, there are three colored fibers of transverse equidistant red, green and blue, and there is an embedded colorless fiber line in the left position of the middle, that is, the position of the golden section line, which will show red fluorescence under ultraviolet irradiation.

And the most unique is the pearlescent ink that prints banknotes, the banknotes printed with this pearlescent ink not only have a colorful luster, but also brilliant and changeable in the sun, very similar to the shining luster of pearl shells.

The banknotes of 2 yuan, 1 yuan and below are only one more colorless fiber anti-counterfeiting line than the old Jin banknotes, because the cost of this pearlescent ink is too high.

As for Jia Jiying's suggestion of using coins for small-denomination banknotes, Song Zhewu did not adopt it. Because, in a short period of time, Song Zhewu needs metals very much, especially non-ferrous metals, whether it is copper, aluminum, or nickel, he will not use these metals to mint coins.

This new color Jin banknote was very popular as soon as it was issued, and people who held the old Jin banknote rushed to exchange it for new coins. Because the new banknotes are printed so beautifully and magnificently, they are called treasure banknotes.

In order to dispel the suspicion that Song Zhewu had issued new banknotes, Song Zhewu asked well-known literati and gentry from all over Shanxi to supervise and ensure that only new banknotes of the same value as the existing Jin banknotes would be printed, and that no more money would be printed.

However, what puzzled Song Zhewu was the name of the new banknote.

Naturally, the new currency can no longer be called Jin banknotes, but what is the name? It's also like Hua Yuan, Zhong Yuan, or even Xia Yuan in the previous life travel novel?

Needless to say, Song Zhewu himself denied it entirely. Song Zhewu can't use any of the words that can represent China, such as China, Hua, and Xia, and to put it bluntly, he doesn't dare to use them. With these words, his new currency is undoubtedly suspected of being issued by the state, and even those who are interested can infer that he Song Zhewu has the idea of replacing the current political axe. In that case, he Song Zhewu's words have never been posted!

Song Zhewu, who had no choice, had no choice but to find Jia Jingde, Jia Jiying, Zhao Pilian and others to discuss. After listening to the reason why Song Zhewu did not use the words Zhong, Hua, and Xia, as well as Song Zhewu's suggestion, the new coin was born from the Jin banknote, and it was best that its name should be able to represent Shanxi to a certain extent, and it was also at a loss.

In the end, Jia Jingde suggested that Wang Xinggang should be allowed to make the new currency widely known in the society in the "Northern Morning Post", which he had just opened on the orders of Song Zhewu.

As soon as the campaign began, it received an enthusiastic response, with hundreds of proposals for a variety of new coins. However, most of the suggested names are inappropriate.

For example, someone suggested calling it Jin Yuan. Jin Yuan easily reminded Song Zhewu of the Golden Yuan coupon more than ten years later, and it was easy to think of the alien invasion of the former Jin Kingdom, and this name was abandoned by Song Zhewu without hesitation. And what made Song Zhewu laugh the most was that some people even suggested using the name Long Yuan, which has a strong imperial power.

In the end, Song Zhewu decided to adopt the suggestion of Qu Yongshan, president of Northern Normal University, and use the name Tang Yuan for the new coin.

Although Tang Yuan and Tangyuan are somewhat homophonic and not easy to call, because of the special meaning of Tang characters, Song Zhewu thinks that this name is still very suitable for his new coin.

Because the Tang Dynasty was the most prosperous dynasty in Chinese history, the Tang Dynasty ruled China for nearly 300 years, and its territory covered an area of about 16 million square kilometers in its heyday. To the north, it reaches Lake Baikal and the Chita region of present-day Russia, which is called Kannai-do; The southern part includes all of Vietnam and is called Lingnan Province; To the northeast, it reaches as far as the Zhugzhur Mountains (including Sakhalin Island) in present-day Russia, and is called Hebei Province.

The Tang Dynasty was not only a dynasty with a prosperous economy, strong national strength and vast territory in the history of our country, but also its founding emperor Li Yuan was in the position left behind in Taiyuan when he rebelled against the Sui Dynasty, so it can also represent Shanxi to a certain extent.

Li Rujuan's trip to Europe this time, in addition to buying equipment, she also has a task, that is, to negotiate with struggling European companies to buy their technical patents in metallurgy, machinery manufacturing, weapons, aviation, vehicles, etc.

Because it is not enough to have advanced industrial technology and equipment, without the corresponding advanced production technology and technology, no matter how advanced the equipment of these factories is, they cannot be called modern industry in essence.

And these advanced industrial production technologies and processes are completely dependent on Song Zhewu's own relatively weak scientific research and technology strength to explore and develop them by himself, which is very difficult, at least in terms of time, Song Zhewu can't afford to wait.

Although Song Zhewu can be said to be unique in the field of chemistry and chemical technology, he only knows some terms and fur for other industrial technologies, and in terms of specific technology, he can't help his experts much.

In Europe, Li Rujuan has made contact with companies and scientific research institutions in Britain, France, Germany, Italy, Sweden, Switzerland, Poland, the Czech Republic and other countries, and discussed the purchase of a series of technical patents and production technologies such as alloys, steel rolling and forging, precision machine tool manufacturing, hydraulic transmission, tank manufacturing technology and fire control systems, artillery, machine guns, die forging hydraulic presses, electronics, mining, power generation equipment manufacturing, electromechanical computers, diesel engines, and so on.

The technical negotiations have almost all gone well, in a word, these Western companies are now short of money, and they are all in desperate need of money to keep their businesses running. And most of these companies have back-to-back devices, because most of them have follow-up technologies that are being researched and developed.

However, the purchase of these technologies also cost Song Zhewu a lot of money, which cost more than the purchase of equipment.

However, there are also some companies that are very strict about their patented technology, saying that they will not buy anything, because they firmly believe that as long as the crisis is over, with their unique technology, it will bring them huge benefits. This is the case, for example, with the German company Zeiss.

To this end, Li Rujuan also proposed to establish a joint venture with them in China to carry out joint research and development and production, which Song Zhewu had already explained.

But these foreigners just don't buy it, because they don't believe that this ancient but very backward Eastern country will have a strong scientific research team and a large-scale market. You must know that cooperative research and development requires equal scientific research strength, so that they can complement each other, otherwise the strong party is undoubtedly doing technology impartation, and these foreigners can still calculate this account.

For these companies that don't buy it, Song Zhewu has no choice. However, this does not mean that Song Zhewu will stop there, he has already explained to Li Rujuan that if the obvious is not good, he has to come to the dark, and it is still possible to dig up a few technical talents. This time, Zeiss was brought in by her two engineers, of course, this cost a lot of money, but no matter how big the price is, it is much cheaper than selling technology patents.

However, there are also some companies that want to cooperate with Song Zhewu's Xinghua, and even want to buy Xinghua's patents, which are some large chemical companies in Europe and the United States. For example, DuPont in the United States is one of the most enthusiastic, because they are extremely surprised by Schmidt's patented technology.

A series of chemical patents such as nylon, styrene-butadiene rubber, neoprene, freon and so on have made them aware of the huge scientific research strength of this Chinese company.

What made DuPont feel and frustrated the most was that neoprene and nylon were developed by themselves in April and May of this year, but they were preemptively applied for patents by Schmidt. The reason why DuPont is eager to cooperate with Schmidt now is not only because they see the strong technical strength of Schmidt, but also because they see the huge economic potential of nylon, a rayon.

DuPont President Pierre? Samuel? DuPont strongly expressed to Song Zhewen that it wanted to buy these patents and asked Xinghua to set up a joint laboratory in China.

However, in the field of chemical industry, Song Zhewu does not need to cooperate with anyone, at least in terms of scientific research, because of him Song Zhewu, the scientific research level of Xinghua Chemical Company is definitely the highest in the world. Therefore, it is not necessary to set up a joint laboratory to jointly develop new products, and it is completely possible to sincerely say "sorry" to foreigners.

However, considering the limited Chinese market, the alliance with DuPont is more conducive to opening up the European and American markets and quickly generating huge economic benefits.

Moreover, it is impossible for Song Zhewu to produce all the products in China, and if there is no imminent anti-Japanese war, it is okay to let those foreigners come to China to transport his advanced products of Xinghua like the oil transported from the Middle East in later generations. But once the war breaks out and the sea route is blocked, all the products will not be able to go out, that is, there is no food to eat while guarding Jinshan.

In view of this, Song Zhewu still called Song Zhewen in the United States and agreed to jointly establish a joint venture with DuPont in the United States. DuPont is responsible for the plant, equipment and working capital of the joint venture, and Xinghua Chemical Company has the patents of styrene-butadiene rubber and neoprene as its share capital, and Xinghua Chemical Company accounts for 51% of the total share capital.

Nylon and all the patents of Xinghua Chemical Company will be authorized to this joint venture company for production, of course, the patent royalty joint venture company still has to pay Xinghua Chemical Company every year normally. Correspondingly, the same is true for DuPont's patents......

(To be continued)