Heavenly Dao Formula

That's right...Yantian, Mo Yun suddenly remembered that the princess came to show him this place.

She doesn't know much about the salt industry. She only knows that salt production is the lifeblood of the country and has great benefits. But the profit of salt lies in the tax, so it should have nothing to do with the princess. Why is Ning Wanjun so concerned about this kind of thing?

When she came to the crystal pool, the princess also took off her shoes and socks, and stepped into the pool excitedly.

"You're right, it turns out that salt can really be exposed to the sun." She held up a handful of salt crystals mixed with mud and sand, and put them in the sun to examine them carefully, "The Wang family probably never imagined that we don't even have a single firewood." Burn it, and you get the purest salt."

"Pure?" Xia Fan raised his eyebrows and said, "Where is this? What you have in your hands is just the lowest grade coarse salt."

"The lowest grade?" Ning Wanjun looked at Li Duojin in surprise, "Eunuch Li, how is the salt in the palace?"

"Returning to Your Highness, it is almost the same as this, but it is crushed and then sifted to make it more delicate."

"I'll just say it." The princess poured the salt back into the water, "Sea salt is bitter, while mine salt is astringent, so well salt has the weakest taste—of course, those that can be paid to the palace are generally of the highest quality." Good batch."

This time it was Xia Fan's turn to be surprised. Don't they have the concept of refined salt at all? What is in front of me is not an ordinary wealthy business family, but Princess Qiguo!

But if you think about it carefully, the matter of purifying table salt is really a matter of figuring out the nature of table salt.

"Could it be that you can make it more pure?" Seeing that his expression was wrong, Ning Wanjun couldn't help asking curiously.

"Although it can't be the purest, it can at least remove most of the peculiar smell." Xia Fan nodded, "That's the so-called refined salt - as fine as dust, as white as snow. It's just that this part of the process will greatly reduce the output, so the early stage I didn't think about it. If you want to taste, I can make an extra."

"I want to eat!" Ning Wanjun replied immediately, her eyes were full of light.

This is a rare item that is not available in the palace, and she is determined not to miss it.

Fine as dust, white as snow, just sounds amazing!

In fact, if the princess didn't mention this matter, Xia Fan would refine part of the refined salt himself to satisfy his and Li's appetites. After all, coarse salt is really unpalatable. If you put too little, it will be tasteless, if you put too much, it will be bitter, and other impurities will seriously affect the taste.

In addition, he didn't plan to use chemical purification method-coarse salt is at least edible, and it won't kill you if you eat it. If you come up with some unexplainable reactants during purification, it will be tantamount to poisoning yourself. Therefore, recrystallization is undoubtedly the most suitable choice. Taking advantage of the fact that the solubility of salt is relatively stable under temperature changes, the impurities that precipitate faster can be filtered out first, and the remaining water is evaporated at last, leaving relatively pure refined salt.

Of course, the precision of this physical purification method is limited, and it is far from pure salt in the true sense, but at least it will not taste bitter.

Mo Yun stood on the shore, thoughtful.

Although she doesn't know how to make salt, she can deduce the general situation from the conversation between the two of them—the thing called "salt field" in front of her is obviously an unprecedented method of making salt, and it is better than the current method much.

The imperial court will definitely have great interest in this technology.

Therefore, when Ning Wanjun looked at her, she nodded slightly, "If Yanchi can be promoted, the treasury of Qi Kingdom must be filled to the brim—the Holy Majesty will definitely praise His Highness for it."

However, what he didn't expect was that as soon as these words came out, everyone stopped what they were doing and looked at her in unison.

Even Eunuch Li frowned.

Looking at this weird scene, Mo Yun couldn't help taking a step back.

What's going on, did I say something wrong?

"Your Highness... are you sure she is one of your own?" Xia Fan asked in a low voice.

"This is a misunderstanding." Ning Wanjun coughed twice, and then said seriously to Mo Yun, "I don't intend to report this technology to the imperial court, let alone exchange it for a reward from the Holy Majesty. Everything you see today is gold. Xiacheng’s secret, so no matter who it is, don’t reveal this matter, can you?”

"Of course no problem." Mo Yun responded quickly, but his heart was full of doubts.

And one thing she knew very well, that is, after she said those words, the people around her were obviously wary of her.

Mo Yun suddenly felt a little bitter.

The two have been separated for too long, and even if the past connection is still there, the surrounding interpersonal relationships have changed.

"Let's go back to the villa first," said the princess.

"Can I...can I have a few more words with Master Xia?"

The other party is in charge of the command department. If there is no princess to take the lead, she won't be able to meet if she wants to. Mo Yun has not forgotten the reason why she came here, and she cannot be discouraged by this little accident before she gets a definite result.

"Yes." Ning Wanjun put on her shoes and socks again.

"You said he knew a lot, didn't you?"

"According to his own words, he knows a little bit about everything."

This person... is quite cautious.

Since that arithmetic book can no longer be used as a breakthrough, she can only start from the field she is familiar with.

After Xia Fan came over, Mo Yun regained his mind and said, "Master Xia, you asked me about the research of the Ministry of Industry, but we actually encountered a very difficult problem. Your Highness said that you might be able to come up with some ideas that ordinary people can't predict. , so I would like to ask your opinion."

"Wait," Xia Fan stretched out his hand to stop it, "Didn't you just say that it was a national secret? I don't want to be wanted by the Ministry of Criminal Justice for a reward just because I heard this."

"That's... for outsiders." Mo Yun pretended to be calm, "Besides, I also saw the secret of Jinxia City just now, so it's an exchange."

Can this be exchanged? Xia Fan silently slandered, I think this is just an excuse.

However, he is also really interested in the research of the Ministry of Industry, which after all represents the highest level of manufacturing in Qiguo. "Okay, just ask."

Mo Yun squatted down and opened the wooden box that was always with him.

In addition to some personal items, it is mainly used to store the model of the mechanism beast.

This is also the most critical technology she presided over to conquer.

Mo Yun placed the built-in bronze four-legged beast on the sand, and at the same time injected the Qi in his body into it——

The four-legged beast stood up slowly, and took a step forward from left to right!

"Oh?" Ning Wanjun let out an exclamation, "I remember that this thing was just an idea of ​​yours before, but it has come true now?"

"If you just let it move, the Machine Building Bureau has already made a real object that is the size of a cow and a horse." Mo Yun said proudly, "But in terms of practical application, there is still a key problem that is difficult to solve."

Speaking of which, she looked at Xia Fan, "I wonder if Master Xia can solve this problem for us?"