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When saving the great drought that affected the entire Main Plane continent, Sui Xiong once produced a lot of salt, really a lot, as much as a mountain.

Of course, these salts are all coarse salt, which is bitter and astringent. Maybe poor people don't mind its taste, but Sui Xiong himself dislikes them. In his opinion, this salt is garbage. Not only does it taste bad, but it also contains a lot of minerals that are harmful to the human body. No matter how lacking in scientific knowledge Sui Xiong is, he still knows that seawater cannot be drunk. The key reason why he cannot drink it is not that it is dirty, but that it contains a large number of harmful minerals.

Sui Xiong once heard a popular science saying that the reason why seawater is not drinkable is that it contains too much salt, but the various other minerals contained in it are another. He couldn't remember what those minerals were, but he still had an impression of the names, such as vomiting salts, Epsom salts... Just by hearing the names, he knew what the consequences would be if he ate them.

So even though he got mountains of salt while getting fresh water from the sea for disaster relief, he couldn't find any good way to use it. Finally, Palin, the chief scientific research expert of the Masked Void Church, was given a task to study how to purify these coarse salts into edible salt.

There is also solar salt technology in this world, and naturally there are ways to turn coarse salt containing a lot of impurities into refined salt with almost no impurities. But those methods all require the use of magic assistance, and the cost is too high. Apart from being enjoyed by the upper class, they do not have great practical value.

The special spell "Purify Coarse Salt" is at the mid-level level. A mage who can cast this spell is at least as good as a knight, and he only casts the spell two or three times a day. In total, it can purify ten to fifteen kilograms of salt. That’s all. "Purifying Salt Water" is a little lower, and can be used by a mage close to the mid-level. An ordinary mid-level mage can use it about ten times a day. However, considering that the salt can only be obtained after the brine is evaporated, the efficiency of making refined salt is actually not as good as "Purified Coarse Salt".

In general, taking into account human resources and casting materials, a pound of magically purified refined salt is worth about twenty gold coins - this is the cost, pure production cost, and only the cost of sun-dried salt can be so low. . If it is boiled salt, add three to five gold coins per catty. Coupled with transportation... refined salt in inland areas can sometimes even be sold for more than one hundred gold coins per catty!

This is undoubtedly a hugely profitable industry, but there are actually very few people engaged in it, very, very, very few. Because in most cases, people would rather consume a pound of coarse salt that does not exceed five gold coins.

What? You said it tastes bad? Are you saying it's harmful to your body?

Just eat less!

Therefore, the market for refined salt is not large, and the profits are not huge.

Sui Xiong's task for Palin was to research a method of purifying coarse salt at the lowest possible cost. As for what to budget for research, the old rule is, don’t worry about money, just spend as much as you can.

Even so, it took Palin more than ten years to complete this research.

But the method he and the researchers he led finally found was extremely simple.

It's as simple as just two words.

"Powder" and "wash".

Yes, those are the two words that Palin named this salt.

The specific method is not complicated at all. First, grind the coarse salt as finely as possible, preferably as fine as flour. Then pour them into the salt water. As more and more salts are dissolved in the salt water, the salt gradually becomes insoluble in water - in physical terms, it is called "saturated".

This saturated brine can no longer dissolve salt, but it can dissolve the impurities contained in the salt. Use it to wash finely ground coarse salt powder to obtain refined salt with very little impurity content.

After washing, the fine salt obtained has very little impurity content. If necessary, this salt can be used to make saturated brine for the second washing; or even the third time...

Generally speaking, the fine salt obtained after washing three times has no odor at all and is very pure. Palin also added some filtration, precipitation and other impurity removal methods to this process, and what he finally got was refined salt that is as delicate as rice flour, white and crystal clear, and has an excellent taste.

He named it "pink washed salt."

After listening to his report and inspecting their research institute, Sui Xiong couldn't help but feel sincerely happy for them.

"This is an amazing achievement!" He said, "Palin, if I am right, if you are willing to spread this technology widely, this achievement may be enough to become a god - of course, it is probably just The lowest level of weak divine power.”

Palin smiled without any excitement.

This is not to say that he looks down on weak divine power. No matter how "weak divine power" is, it is still a god, a great and immortal existence, a level beyond the reach of mortals. It's just that this is not what he is pursuing.

"In the process of studying refined salt, it was not me who really made a huge contribution," he said, "but Fela Kenki."

Of course Sui Xiong knew who Fela Kenji was. Known as the "Blue Magician", he was originally a pig-headed chef. Later, he had an adventure and swallowed an ancient creature who tried to take his body and resurrected it. The wizard's soul became a magician. Later, with the help of Milomon and Mado, he delved into creating green magic characterized by "devouring magical beasts and learning spells"...

He also saw Fela in the research base. Because the pig-headed man's life span was not long, Fela's hair was already white, and his fat face was gradually thinning, proving that his life had reached the end stage. The battle with the ancient wizard's soul had benefited him a lot, but it also cost him a lot of life. In addition, in order to settle his long-cherished wish with his old rival Ruby Sliu, he used taboo means at the cost of his life, and only then defeated his opponent in the world's first martial arts competition, avenging the hatred of being looked down upon and bullied in his youth.

Now he is almost at the end of his life. Although he is not so shaky that he can't even walk, it is not strange even if he falls down tonight and never wakes up tomorrow.

Sui Xiong still knew about his experience, but Sui Xiong never thought that this pig-headed man with a bad temper and limited talents, who seemed to rely only on good luck and the help of friends to become a magician, was actually the key figure in inventing crude salt purification technology.

Looking at the peaceful smile on Fela's old face, he couldn't help but think of a famous saying.

This is really... Don't judge a person by his appearance!