Baili Yan has the impression that most spices are grown in the tropics and temperate zones, and there are almost no spice resources in the cold zone, otherwise Europeans would not fight for a bottle of pepper.

At present, more than 60% of the known spices are produced in the cold temperate and cold zone areas where the Jinxuedi people are located, and there are not many spices native to the Central Plains, and many of them need to be obtained through exchange.

In addition, the diamonds and precious medicinal materials traded by the Jinxuedi people are eye-opening:

"Good boy, you have so many diamonds hidden for food."

"Don't you also like gemstones, and the Central Plains almost don't produce diamonds."

"That's a good thing to say. But I think about it, what do you do with the diamond powder you process every year? ”

"What are you going to do!" Mooney instinctively thought that Bailiyan must have another purpose.

"I'll just ask you what happened to the powder after processing the diamonds."

"It's generally useless."

Gudapa said, and Mooney answered:

"Are you of any other use?"

"Well, how about giving you a long-term business."

"Just for diamond powder?"

"Yes. You produce a lot of diamonds every year, but there are some very small diamonds that you can't process. ”

"Yes, in the past, after getting your far-eyepieces, one end can be magnified, so in the past, diamonds with small grains of rice could only be piled up, but now they can be processed into very exquisite jewelry, but there are not enough far-eyepieces."

"I said, what are you going to do with a magnifying glass, I used it to do this. Well, sell me all the diamond powder you produce every year, and the price will be negotiable then. ”

"Then you sue me, what do you want these powders for?"

Mooney got to the bottom of it, and Bailiyan knew that he also wanted to do the same.

"Well, it doesn't hurt to tell you. In short, this powder can be made into a special whetstone to make another super-hard iron, hence the need for this powder. But don't misunderstand Mooney, diamond powder doesn't have to be used, other whetstones can be used, but diamonds are harder and faster. ”

"Have you refined hard iron that is equivalent to diamond?" Mooney was nervous, he couldn't imagine any iron in the world that could have the hardness of diamond.

"Huh...... What to do so nervously, it's not as powerful as you think. Although hard iron is very hard, it is very brittle, and it is used for other purposes, not to produce weapons. ”

"How do I know you're not lying."

"Believe it or not, anyway, Ben Hou took away a large number of your discarded and useless miscellaneous stones from your gem field back then, which is enough for dozens or hundreds of years in my Xian country, it doesn't matter if you have it or not."

"So you swept away those miscellaneous stones just to sharpen the iron!"

"Sort of, but it's a little more complicated than you think."

The Jin Xuedi people have an astonishing amount of diamond production, and Bai Liyan suspects that in addition to the unfavorable factor of climate, the territory of the Jin Xuedi people is much richer in animal resources and mineral resources than the Central Plains.

Diamonds, gold, silver, copper and iron and other mineral resources are abundant, and many gold and silver mines are open-pit deposits, which can be mined on the surface. The quality and abundance of diamond mines are also outrageous, especially in the pit caused by the meteorite impact in Posong, where the abundance of diamonds is even more amazing.

Due to the increase in diamonds and gold and silver jewelry, the jewelry processing industry of the Jinxuedi people is more developed.

Diamonds are the hardest substances in nature, and even man-made materials, there are few substances that can surpass the hardness of diamonds. Therefore, the processing of diamonds is diamond grinding diamonds, and the resulting powder was not useful in the early days, but after industrialization, diamond powder was used for grinding and grinding, especially for the surface polishing of superhard materials and the grinding of cemented carbide tools.

Previously, the Jinxuedi people only processed and produced diamonds with larger particles, and after the seizure of magnifying glasses and telescopes, the convex lens was quickly used in the processing and production of diamonds, and the resulting diamond powder produced every year was considerable.

Of course, in terms of the total amount, it is impossible to calculate in tons, and the Ligong faction and Yongxingcheng process a large number of industrial diamonds for cutting tools every year, and the powder produced in a year is calculated in kilograms, and it is not realistic to expect bulk supply.

But something is better than nothing, and the grinding wheel and abrasive tool sintered by diamond powder have a better effect and faster speed than volcanic stone, and it is not comparable to the traditional alumina grinding wheel.

"Well, this deal is not done."

Bailiyan was very sincere, and after a little thought, Mooney pushed the boat down the river and said:

"Do you still want that variegated diamond now?"

"Yes, of course, but don't expect Benhou to spend a lot of money."

"How about a golden silkworm in exchange?"

Mooney proposed, immediately alerting Bailiyan:

"Why do you have to ask for the silk of the golden silkworm, this thing is expensive and scarce, enough to buy two excellent brocades, as for the necessity?"

"You say, sell it or not."

"Then you have to tell me why, looking at the way you look, I wonder if you are not meant to wear it."

Mooney's face was faintly undulating, and although he was very sophisticated in disguising his traces, he couldn't escape Bailiyan's eyes.

"Say, what do you want golden silkworm silk for?"

"Do you know about 'blood ulcer' disease?"

"Ulcers? What is ulceremia? ”

Bai Liyan now hears the word "disease" and has a big head, the reason is that the problems of this planet are strange, and they are very different from the earth, to what extent, all the classics of this planet so far record smallpox. Of course, it is not ruled out that there is smallpox in the northern hemisphere, but there are no diseases on the earth, and there are many local diseases, and the pain and fever of the Jinxuedi people are regarded as a genetic disease of the human race, and more than 98 percent of them are exclusive to the Jinxuedi people, and this blood ulcer is one of them.

Ulceremia is a disease in which bleeding does not stop and the wound does not heal due to a viral infection. The body's hemostatic function comes from platelets binding to oxygen and clotting, and the ulcer virus can stop this process.

The virus does not cause further harm to the body's physiological system, but it prevents the wound from healing and causes ulceration, so usually a very small wound, even if it is pricked by the tip of a needle, as long as it is infected with the virus, no matter how small the bleeding wound is, it will not heal.

Bailiyan also had this disease during the southern expedition, and when Mooney said it now, Bailiyan vaguely remembered that there was such a phenomenon. It is true that some wounds are not big, and in the end the inexplicable wounds suppurate and fester. However, at that time, the fighting was fierce, the medical conditions were extremely poor, and many people died without healing wounds, but they did not attract attention.

However, under careful study, there are problems in this, Bai Liyan carefully recalled the details of the southern expedition to Posong and Songdia, although the number of remnants of Xianguo is small, but the incidence of disease can be followed. Belonging to the Central Plains people, the incidence is significantly higher, while the Central Plains people rarely get sick. If it is said that racial differences lead to differences in immune systems, then the Central Plains people's disease ulcerative disease undoubtedly shows that the Central Plains people can also be infected with this disease.

However, there was no large-scale infection in the Southern Expeditionary Army, which means that there are other factors that interfere with the risk of infection of the Central Plains people from the north to the south, or the diet changes the immune system, or the differences in the microflora carried by the human body interfere with the invasion of the virus.

In order to cure this disease, the Jinxuedi people mainly use "Ji Dongcao", supplemented by other anti-inflammatory and hemostatic drugs to make dry powder to cover the affected area, and the curative effect can be seen. It is a common herbaceous species that grows in the middle and high latitudes, and is curative of ulceremia. The Jinxuedi people need silk because silk can cure this disease.

Hearing this, Bailiyan faintly saw some clues.

If silk is said to cure diseases, modern science has indeed proved it. Silk contains nearly 20 kinds of special amino acids and proteins, which can benefit the blood flow of subcutaneous capillaries, help stabilize blood pressure, prevent and treat skin diseases with antibacterial, and slow down the aging of the skin. In addition, silk promotes wound healing, which is really effective. Therefore, the Jin Xuedi people smuggled silk from the Central Plains, not only for supply and clothing, but also for the bandaging of simple wounds.

Mooney specified the need for golden silkworm silk because he found that the effect of golden silkworm silk on blood ulceration was much better than that of ordinary silk.

In view of the special external physical properties exhibited by the golden silkworm, Baili Yan suspected that the difference in amino acid proteins in the silk led to the results of very different efficacy in the treatment of the same disease. Ulceremia is apparently a certain amino acid that binds to the human blood and undergoes some kind of transformation that can stop the spread of the ulcer virus.

The people of the Central Plains in the north can prevent this disease, largely due to the differences in human flora caused by the diet of the Central Plains and the natural environment. If you look closely, the ulcer virus can infect the Central Plains people, but some bacteria or viruses carried by the Central Plains people suppress the spread of the virus in the Central Plains, and the special amino acid protein contained in silk can cure the disease.

Otherwise, the annual migration of migratory birds and the flow of people, and even the battle of Qianyue Mountain, the poison carried by the Jinxuedi people should have spread in Qianyue Mountain, and it is obvious that the diet and geographical environment of the Central Plains people have effectively resisted the spread of this virus.

Secretly wondering whether what Mooney said was true or false, Bai Liyan didn't think that Mooney was deliberately hiding anything, and after thinking for a long time, he said:

"The golden silkworm can be given to you, but there is one thing I must explain, the production of the golden silkworm is very small, so the price is not cheap, even if you want to buy a large amount, the price will not be too low, and there are not many golden silkworms that can supply you now."

"I want as much as you sell, and I've heard that golden silkworm silk can be stored for a long time like cotton cloth and hemp."

"It's not exactly what you said, if it is stored properly, it is estimated that it can be stored for ten years, but it has only been three or four years since the discovery of the golden silkworm, and I don't know how long it can be stored. If you want to hoard, I don't care. ”

Silk fabrics are not better than cotton, linen, to ensure that the quality of the cycle is very short, modern storage technology can only maximize the maximum degree to ensure the good quality of silk six to eight years of good quality cycle, six to eight years after the beginning of slow oxidation and deterioration, six to eight years after even if continue to maintain a good preservation environment, can not reverse the process of silk deterioration.

Nowadays, silk has a shorter storage cycle, only three to five years, and it begins to deteriorate after three to five years, so silk is not a shelf-stable commodity.

Of course, the quality of the cycle is not equal to the life cycle, the deterioration of silk is a slow change, there are many factors that affect the quality of silk, such as greasy, corrosion, environment, humidity, etc., so silk is stored for three or five years after use, its life cycle can not be generalized.

Some people can wear a silk robe for 20 years, some people only wear it for a few months, and some unearthed cultural relics silk and silk books that have been handed down to the world, there are thousands of years of miracles of not rotting, so how to maintain it, has a great impact on the whole life of silk.

The golden silkworm can be shelf-guaranteed for ten years, and the Baili Swallow is only a mouthful, but at least it is certain that the corrosion of the golden silkworm to acid and alkali salts is much stronger than that of silk, and it is not a big problem to keep it for ten years. And it turned out later that the quality storage period of the golden silkworm is indeed much longer than that of ordinary silk.