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As the order was issued from the Mawei barracks, the marines stationed in the provinces began to move. The information collected by the Intelligence Department in the early stage on the smuggling of salt in Fujian had a clear goal, and the squads and squadrons of the Marine Corps rushed straight to the scene and quickly wiped out the smugglers. The total amount of salt seized from the smuggled salt dealers exceeded 50,000 stones, enough for the five million people in Fujian to eat for almost two months.

At the same time that the army was secretly dealing with the smuggling salt dealers, all prefectures and counties and even the towns and villages below began to open new shops, which were very small in size and were only small storefronts, which was also the method proposed by Yao Qisheng to Geng Jingzhong to control the sale of salt from the basic retail channels. At that time, these small shops were places that specialized in salt, and nothing else was done. There is a counter inside, and the salt is placed in the back, and the left gives the money, and the right side goes to weigh the salt. According to Geng Jingzhong's plan, the price of salt in the future will be at most the same as the price of rice, and the entire salt sales channel will be controlled at a low price. Of course, in order to make huge profits by some people to resell salt to other provinces for profit, it is still necessary to adopt a certain purchase restriction system, and besides, there are also local supervision agencies of the Ministry of Intelligence, and if this phenomenon is discovered, it will be severely cracked down.

On the Fuzhou side, after Geng Jingzhong gave the order, he went into the real room. The equipment here is made by him by drawing pictures, and some iron, copper and even gold and silver tools are specially made by him. There are ten such real rooms in the whole of Fujian, mainly distributed in the workshops of Mawei and Longyan. He's the youngest. It's just for his own use. The rest are for experts and students who have come back from Europe. Because of the large number of people who use it, the scale is much larger than that of Geng Jingzhong's side.

Yesterday, Geng Jingzhong specially asked people to go to the street to buy some ordinary salt, he wanted to see what kind of salt was in this era, according to his understanding, since it is seawater frying salt and seawater drying salt, then the zuò should be coarse salt. In his previous life, he had seen coarse salt, but he didn't know how this era was different from what he had seen before. The reason why I didn't take some salt directly from the palace and take it out to see. That is because he does not take it and knows that the salt used in the palace must be refined salt, and it can never be coarse salt, after all, it is refined salt that he rinses his mouth every morning, and it is also the best green salt among refined salts.

Green salt can be said to be the best salt in the country now, from Yanchi City, Hui'an Fort, Huamachi and other places in Ningxia Town, Shaanxi, as well as the salt around Qinghai Lake in Gansu. Because these salt belts are slightly green, they are called green salt. For a long time, green salt has medicinal functions such as salty, cold, cold blood, and name. A long time ago, green salt was the most useful. It's not for seasoning, it's for gargling. The first thing the rich and noble do in the morning. It is to rinse your mouth with green salt. Therefore, for some groups of people, green salt is indispensable.

"Is this good salt?" Geng Jingzhong looked at the salt in his burden and asked the palace steward. There is no doubt that in Geng Jingzhong's eyes, these sea salts are really just the most primitive salt, containing a lot of impurities, and the surface is yellow and yellow, which is very ugly. The coarse salt he had seen before, which was also preliminarily refined, looked much better in color than this. Reach out and grab a handful of sea salt, astringent, large and uneven. Such sea salt, which is used for stir-frying, is obviously a bit reluctant, and I don't know what it is used for. "Is that what all the salt on the street looks like?" Geng Jingzhong continued to ask.

The palace steward immediately replied: "Back to the prince, it's not all. Some shops are even worse in condition, and they like to mix some soil or something into the salt, or a little fine sand, in which case the common people have to carefully pick out the fool or sundries when they buy it. ”

"......" such sea salt has to be mixed with mud, Geng Jingzhong is really speechless.

The salt in later generations is powdery, fine, and white, and it looks and feels really good, and these salts in front of you, if they are placed in the next generation, not to mention selling for ten cents a catty, even if it is pasted upside down for ten cents, I am afraid that no one will take a look at it head-on, let alone use it for cooking, and the appearance is really bad.

After seeing the coarse salt sold on the market, Geng Jingzhong was really dissatisfied, such salt has too many impurities, and it is really not suitable for consumption, even if it is used to pickle pickles, it must be carefully considered. So Geng Jingzhong ordered his subordinates to send this stone coarse salt into his real room, preparing to purify the coarse salt and turn the coarse salt into refined salt. This coarse salt purification salt is available in the real yàn class of junior high school, and it is a real yàn that every student must do, and Geng Jingzhong is of course impressed by every step.

Yao Qisheng also arranged for the opening of shops in Fuzhou City to sell salt, and when he came to the palace, he just heard that Geng Jingzhong could turn coarse salt into refined salt. Although we know that this coarse salt contains a lot of other soluble substances similar to calcium and magnesium, if we really want to purify coarse salt on a large scale, there is no way to get a large amount of barium chloride, sodium hydroxide, sodium carbonate and other solutions. What he has to do now is to completely remove the insoluble impurities from these coarse salts, and then precipitate the white and delicate salt from the new.

Geng Jingzhong said to Yao Qisheng, who was eager to try: "You help me do it, and I will make refined salt for you." Geng Jingzhong himself brought the prepared water, poured it into the big beaker, and then said, "Use a spoon to add salt to the cup!" Then stir! ”。 Yao Qisheng on the side hurriedly complied. This step is to dissolve, put in some dissolved and then add the coarse salt, stirring with a glass rod as you go, until the coarse salt is no longer dissolved.

The next step is filtration, this step Yao Qisheng will not, and Geng Jingzhong will operate it himself. It's fully equipped, just put the filter paper. The basic operation of coarse salt purification is to first filter and then evaporate, focusing on removing impurities from coarse salt. Filtration needs to be repeated to remove as many impurities as possible. Every time you filter, just change to a new filter paper.

After repeated dissolution and filtration, the brine is no longer the original turbidity and is very clear. Geng Jingzhong poured all the salt water into the evaporation dish, and put an alcohol lamp below to burn it to completely evaporate the water. In this process, it is necessary to constantly stir with a clean glass stick until the water has completely evaporated. Continue stirring to avoid condensation of salt. The water has completely evaporated, and the white refined salt basically comes out.

"There it is!" Yao Qisheng saw a little bit of salt and said happily.

If you look closely at the purified sea salt, it is no longer granular, no longer yellow, but white powder. When you stroke it gently with your hand, you can feel a very fine and refreshing feeling. Even if you don't touch it with your hands, you can feel it with your eyes, and the quality is much better than the original coarse salt. Yang Kaide and the others have actually never seen real refined salt, but if they think about it, refined salt should be almost like this.

"It's really refined salt." Yao Qisheng still didn't believe it, so he personally stood over and rubbed it with his hands. That's when it's really certain. "Lord Wang, we're going to get rich again!" (To be continued......)