Two days later, Zhang Zilin, a hawker, brought his family and an elderly man with a skill in Chen Jicun to meet Bailiyan and present two larger ceramic drums.

Bailiyan then arranged for his cadres to go to Yongxing City to resettle, and ordered the Design Department and the Technology Department to work together with Zhang Zilin and others to study and come up with a mature process.

On March 20, Wei Qi brought the gold and silver after chemical boiling and dyeing back to the Hou Mansion, and Baili Yan rushed to the palace to report the good news, and King Xian was surprised to see it

"Aiqing, why is the gold and silver so black?"

"King Qiyu used some means to get it."

"Dye?! What if it is washed away by water? ”

"My lord, you can't wash it off with water. If the king doesn't believe it, he might as well use a pig hair brush to brush it in water. ”

"Hmm. Jiang Hao, go get water and brushes. ”

"No!"

When he was young, Jiang Hao took a copper basin and a brush, and King Xian personally brushed the gold and silver to dye the black parts, and after brushing for a long time, there was no peeling at all, and the water was still crystal clear.

"It's strange that this black ink doesn't move at all. Aiqing, how did you do it? ”

"Back to the king, gold and silver are exposed to the wild, and there will be no rust on copper, iron, tin and lead, but gold and silver are dense, and ordinary ink cannot be dyed. Therefore, the minister added a very small amount of white copper to the gold and silver, combined it with the gold and silver, and distributed it evenly, and then turned the white copper black by means and attached to it. The general market circulation wear is very small, it is difficult to wear it off, and if the black fades after the years, it can be recycled to the treasury and recast and dyed.

If a person with bad intentions corrodes it with acid and extracts gold and silver, the black color disappears immediately, so that it can be discerned whether there is a shortage of two catties. ”

"Hehaha...... King Xian heard the news and was happy: "It's really a good way, in this way, even if you want to blackmail the widow, you can't do it." ”

"Yes."

"However, Fang Aiqing said that if white copper is added to the gold and silver, the condition is not as good as before?"

"Back to the king, most of the fineness of the inch of silver and gold circulating on the market is only eighty to eighty percent five, ninety percent of the gold and silver are less than one-tenth of two, and only the fineness of the gold and silver collars of the imperial court ritual vessels is higher than ninety percent, or even ninety percent of five, so the gold collar and silver collar are actually slightly more expensive than the inch of gold and silver."

"What is the reason for this?"

"Due to the lack of smelting skills, gold and silver contain impurities. In addition, the standards of various countries are different, and whoever increases the quality will suffer first. Therefore, most of the fineness of silver is around eighty-fifty, and occasionally eighty-tenth.

In view of this, after the gold and silver samples were re-smelted, some impurities were removed, so that the fineness remained ninety-five, and then filled with less than one-percent copper, so that the fineness was reduced to ninety-percent. This not only increases the hardness and makes the gold and silver more wear-resistant, but also has a better fineness than existing gold and silver. ”

The purification of gold is more difficult than that of silver, which can be easily refined to a purity of more than 95 percent through high temperature and long smelting, while gold cannot.

The conventional high-temperature smelting method can reach up to 90 percent at most, and more can only reach more than 85 percent, and continue to improve the purity, which can only rely on simply extending the smelting time and temperature, and carrying out more adequate smelting, so that the impurities float up, and then filter the impurities on the surface, but also up to 934% purity.

In order to obtain three nines and four nines, regardless of the laboratory chemical reduction method, industrial smelting of pure gold and silver usually achieves the extraction of pure precious metals by adding highly toxic cyanide.

At present, it is technically difficult to extract pure gold and balance fire consumption and cost at the same time, and the heat cost is not cost-effective.

Of course, there is another way to obtain gold with a purity of three 9s, and it has been reused since ancient times, and that is to extract it with mercury.

Due to the physical phenomenon that mercury and gold meet to form the gold element wrapped in mercury, mercury was often used in ancient times to rush into the crushed gold ore to obtain the combination of mercury and gold, and then heated in a furnace, and the mercury evaporated at high temperature, and the rest was three 9's of gold.

This phenomenon is commonly known as "gold amalgamation".

However, mercury was subject to mining and acquisition in ancient times, and the value of mercury was comparable to that of gold, and even for a considerable period of time, mercury was also disguised as a currency that could be traded, so the cost of the "gold amalgamation" method was high, and mercury was highly toxic.

In view of this, adding copper or white copper to gold and silver to meet the chemical blackening at the same time, the gold and silver will also be more beautiful and harder. The common 18K and 22K gold are all added with copper to enhance the hardness and ease of processing, so 18K and 22K gold are actually copper-bearing gold-based alloys in a strict sense.

Two-thirds of the newly minted gold and silver are dyed, and one-third of the natural color is used, and even if the gold and silver are replaced by acid corrosion at one-third of the original color, the steps that appear in a circle of reduction will be very obvious.

King Xian was full of praise for the dyed hair and was very satisfied.

"Okay...... Aiqing, when will this law be implemented nationwide? ”

"Back to the king, the gold and silver preparation is jointly supervised by the tax department, the tax department and the internal government, and the current amount of gold and silver needs to be recast, and it takes time to prepare the required equipment and materials, and also to train manpower, and it will take one to two months at the earliest to dye black on a large scale. Before that, you can first recover the full gold and silver, and release the shortfall of gold and silver, and the two things can be done with half the effort.

In addition, the minister had ordered people to speed up the production of paper, ink, and motherboards, which needed to be produced, and time was also needed to prepare, so there should be no rush. ”

With Aiqing's words, the widow is relieved. In addition, the widow thought twice about it, and also discussed with Nuo Yiyan, Gao Xun, Ding Yang Hou, and Lu Gao Aiqing alone, and took it to the side, the widow thought that it was better to cast money than not to cast money, and Yongxing Hou was willing to take another risk for the widow? ”

"If the king decides to mint money, the minister will not hesitate to go to the soup, but the minister will implore the king."

"What's the matter?" King Xian looked at Baili Yan, his eyes full of expectation.

"The minister implores the king to invest more of the newly minted copper coins in building ships, fortresses, storage, building roads and embankments, and increasing production in Yongxing."

"Exactly! Aiqing can discuss this matter with Zhao Xun and Lu Gao, and present the detailed information to the widow as soon as possible. ”

"No." Bai Liyan received the order, and then said: "In addition, Jin Xuedi's envoy Mooney will soon enter our country, and Zhiguo Gongliangxiu will accompany him. The minister thought that Gongliangxiu and his entourage wanted to share some benefits, and at the same time, the matter of short-term and short-term shortages had spread in Zhiguo, and Zhiguo's losses were not a few, so there must be this purpose.

The minister suggested that the minister go to Chunan County to meet Jin Xuedi's envoys and Gongliangxiu, one is to show our state of etiquette, and the other is to show the national prestige, so as not to underestimate Jin Xuedi. ”

"Exactly. Jiao Muhua, who was widowed, led the forbidden army of 5,000 to meet the Jin Xuedi people with Aiqing, and set off on a certain day. ”

Mooney traveled north by the royal guest watch, and had to pass through Zhiguo to Xianguo, and the day before yesterday he had to report to Gongliangxiu to accompany him, and Bailiyan guessed that he must have come to earn trade profits and a shortage of gold and silver.

Exiting Bailing Garden, Bailiyan rushed to the national political prison, and bumped into Yin Yangjun and Fang Bohou halfway outside the national political prison.

"Yo, Yongxing Hou is here."

Uncle Fang looked attentive, Bai Liyan was vigilant, and saw the word "money" in his eyes. Then be careful to greet:

"It turned out to be Yin Yangjun, I don't know what Master Fang has to say?"

"Hehe, how can the old man guide you to Yongxing."

Fang Bo rubbed a pair of fat thugs, his eyes were shining, and Bai Liyan pondered that there was nothing good.

"Yin Yangjun is here for the scale."

"Eh, they are all official weapons of the imperial court, no matter how bold this monarch is, he can't use the imperial court's instruments, right?"

"Then what happened to Yin Yangjun?"

"That's right, Benjun just got the news that the barbarians are coming to Xianguo to trade, and I heard that the origin is not small. I think there must be a lot of shots, I don't know if Yongxing Hou can ...... That ...... that"

"Oh......" Bailiyan finally heard something.

The news that the Jinxuedi people had entered the Central Plains to open trade could not be contained, and two days ago, the King of Xian summoned Gudappa and Figos, and the news spread.

Uncle Fang wanted to make a lot of money from the people of Jin Xuedi, after all, Uncle Fang's power in the Jin Kingdom was not small, and he had a large number of raw materials and goods in his hands.

In view of the current unfavorable situation, it is necessary to use interests to pull the Jin Kingdom, so Bailiyan does not intend to refuse. After a moment's thought, he said:

"This matter can be considered at his discretion, but now that he even sees the white hair, Yin Yangjun wants to share the profits and spread it, which will inevitably make the world say that Lord Fang is treacherous, but it will damage Yin Yangjun's reputation."

"Eh, this gentleman is law-abiding, just ask for some ways, and don't violate any royal law, Yongxing Marquis said yes."

"Hehe......" Bai Liyan echoed and smiled, not answering Uncle Fang's words.

After the opening of the Commercial Management Bureau, in the name of regulating business operations, Bailiyan revised the tax law and formulated relatively relaxed business regulations, so as to initially regulate the domestic market and focus on strengthening the taxation of wealthy and powerful households.

Of course, in this way, the industries of Xuanting, Yongxing, and Luhou cannot escape, but for the three marquis who have completed the original capital accumulation, the profits brought by the same tax rate and privileged monopoly operation are far more than the tax losses.

On the contrary, the wealthy and the elite are still stuck in the mode of small-scale peasant economic capital, which is unattainable for the common people, but for the three marquis, it is unattainable for the wealthy and the elite class.

The annual increase in wealth of the three marquis is ten or twenty times that of the traditional wealthy and elite classes, relying on the complete monopoly of Yongxing City, it is impossible for the capital, which has no technology to catch up with the big capital of the technological monopoly, and at the same time complete the capital accumulation under the crackdown of the tax law.

As a result, the form of law is passed to further weaken the elite, so that they will never have a chance to turn over.

If Fang Bo wants to make profits when he enters the Xian Kingdom, he must pay more taxes, and he must not be happy to pay taxes willingly for this kind of miser with Xihuan's support.

To this end, Bailiyan has opened a bill system, which implements full tax calculation on bulk commodities, and uses bills as evidence, and does not pay taxes and wants to pick up goods.

Of course, in reality, there are policies and countermeasures, and it is unrealistic to completely avoid tax evasion and leakage, and malicious tax avoidance, but it is better to prevent the leakage of most taxes than to do nothing.

Under the example of the three marquis and one gentleman, there is no need to impose heavy punishment on those who do not pay taxes, but if malicious tax evasion is discovered, you will be punished for bankruptcy, so that you may not be able to die if you live.

The state administration has not been normal in recent days, and officials at all levels have been busy cleaning up their gold, silver, and business, especially saving money.

Originally, the big people who deposited money in the money shop were mostly businessmen who were attached to the three marquis, and other magnates and businessmen also had deposits in exchange for interest, but the total amount was not too large.

As a result, in recent days, cash payments have not been as much as deposits, and the reason for this is that the internal information of the financial market is not transparent, which makes it easier for those in power to obtain policy news and make profits.

And ordinary people are moved by the wind, and when they hear the wind, in fact, the transaction has already been completed internally, and those who take over are those who are aware of it.

I want to chat about "Empire Travel" with more like-minded people, pay attention to "excellent reading literature" on WeChat, talk about life, and find confidants~