In ancient times, there were fine salts. Grind the salt into crushed powder, which is the so-called fine salt, but it is definitely not refined salt. In fact, whether it is boiled salt, lake salt or well salt, they all belong to coarse salt.

Many salts even contain some toxic substances.

In addition, some salts contain potassium and magnesium salts. These salts have bitter taste, different minerals and different tastes, so this is why the green salt tastes delicious.

Professor Wang Ju's method is very simple, which is to re-melt the coarse salt, add the alkaline surface, remove excess calcium chloride and magnesium chloride, filter the multi-layer gauze repeatedly, filter out trace amounts of sediment and precipitate, and then evaporate and crystallize, which is the so-called refined salt.

Of course, this method is not standard. First of all, the alkaline surface is not pure sodium carbonate. Even if it is pure sodium carbonate, barium hydroxide must be added to precipitate the sulfate and residual magnesium ions, and finally dilute hydrochloric acid will be added to adjust it to neutral, which is the refined salt close to the standard.

Or add sodium chloride to remove sulfate ions, then add barium hydroxide to remove magnesium ions, then add sodium carbonate to remove excess barium chloride, add dilute hydrochloric acid to neutralize, then filter and evaporate to crystallization.

But with the current conditions, how can it be done?

I can only use this simple and rough method to improve the quality of the salt. At worst, I can dissolve it repeatedly, filter it and evaporate it a few times. There may be a better way, but Wang Ju really doesn't know.

It wasn't a few cents of money. In order to finally make it work and get the best plan, the Zhu family spent more than fifty cents of money.

Zhu Huan dipped a little salt with his fingers and put it in his mouth: "Good salt, delicious."

What exactly is delicious? A light taste can scare some special dishes of Guangdong cuisine, and the face is as beautiful as earthy. Guangdong people will avoid braised soy sauce in Anhui cuisine. Jiangsu and Zhejiang people will regard the spicy food as hot as the sky. Sichuan people will vomit even more about the thick sugar in Jiangsu and Zhejiang...

In fact, coarse salt should be more salty than fine salt and can stimulate the taste buds more.

But it is thin, like powder, melts when it is touched. After repeated filtration, although it is still mainly boiled salt, it becomes extremely beautiful after repeated filtration and evaporation.

It is snow-white, as clean and cute as snow.

The cost is a bit high, but it is worth it. Zhu Qing asked with a steady stream of lovely salt: "How much is it worth a pound."

God knows.

"Remember, don't leak the prescription."

In fact, the cost is high, and the production method is not very difficult. Some proportions can also be found. Scarcity is precious, and once it is leaked, it will not be valuable.

Zhu Huan looked at the pile of salt and was pondering.

The Song Dynasty began to appear in luxury goods, not only pearls and jade, but also daily necessities. For example, when you go to Fanlou for a meal, it can cost as little as a few hundred taels of silver and as much as a thousand taels. For example, the Xia Kingdom sword and the top Western Xia crossbow are also calculated in hundreds of stagnants.

"How much does this salt cost per pound?"

Obviously it was another huge wealth. Zhu Huan thought for a long time, then suddenly stood up and headed straight for the Li family with some fine salt.

"Mr. Li, look." Zhu Huan opened the salt bag.

"What kind of thing is this?" Li Fei'er's father didn't realize it was salt.

“Try it.”

"Where is salt?" Li Yuanwai stood up: "Where did it get it?"

They are all businessmen, and they can see their value at a glance.

"A regular salt can be processed."

"How much does it cost?" Mr. Li looked at Zhu Huan with a gaze, clearly saying whether this business could allow me to join a group.

"No matter how much it is, it was taught by your son-in-law."

"Mr. Zhu, you're kidding me...you mean that boy."

"Awesome, I can tell you something." Zhu Huan said about what happened in the past year, but the private goods on Hei'aoling were as medicinal fur. Wang Ju should not be stained with private salt. If he could make a name for Donghuamen, his resume would have cheated Wang Ju.

"Mr. Zhu, why are you so enthusiastic?"

"If it were you, would you be enthusiastic?"

Mr. Li smiled bitterly. The two are of different natures. The Zhu family paid only some money. It seems that the Zhu family has already received rewards, let alone his second son is enlightened. What he paid is his daughter's lifelong happiness.

After thinking for a long time, he said, "I'll ask the concubine."

…………

The second uncle was still sleepwalking wherever he sat. The distance between the Li family and the Wang family in Yanzhou city was no less than that between Zhao Zhen and Wang Ju in Wang Ju's heart.

Moreover, the Zhu family had not leaked any news before, so he stayed for several days after hearing the news.

Li's mother smiled and shook her head.

The same rice, the hundreds of people.

One is an uncle and the other is a son (nephew), but now it seems to be reversed.

She looked at Wang Ju and asked, "Brother, why do you have to make three requests?"

The three requirements are not excessive, and the Li family is somewhat unhappy. No matter how great your future you will be, now my family is higher than yours.

Wang Ju replied calmly: "I have younger brothers and sisters, so it is inappropriate to marry into a family. I am poor now. Although the Zhu family intends to support me, I am a scholar, and there is no need and I don't want to be favored by others. As for the marriage, there are two main things to be delayed. First, my younger brothers and sisters are relatively young now, and they will gradually grow older after a few years. Moreover, I am determined to be a scholar, but it is too difficult to make a name for myself. Secondly, the girl changes in her age and the man changes in her age. If I become unfilial in the future, your family can also regret the marriage and will not harm Li Xiaozi."

"What if you sing the name of Donghuamen?" Li's mother asked.

It is too fierce to catch the son-in-law under the list. As long as you can catch it, no matter whether it is an old man or a married man, you will try your best to drag him home.

At least one-third of the Jinshi were captured by wealthy families in the Central Plains.

What will a engagement work at that time?

"That won't be that. It's too difficult to call Donghuamen. At least before I get the crown, I'm afraid I don't have that knowledge, and I won't have that unrealistic idea. My idea is to see if I can become a candidate before I get the crown. Then learn from those scholars, one, two, and three exams..."

Mr. Li was very happy.

"So what are your plans in the past few years?"

He didn't talk about that great truth like Wang Ju, but it was almost the same. No matter if he passed the first, second and third exams, there would be smoke coming from the Wang family's grave, and even Yanzhou would cause a sensation. Poor Yanzhou has not had a Jinshi yet.

However, now we have to live.

"Mr. Li, that salt..." Zhu Huan sat aside and whispered. If he could make a profit, would he really forget Wang Ju? Of course, there is no sales yet, and Zhu Huan would not tell Wang Ju in detail, let alone how much profit it would generate. Besides, Xia Guojian can get dozens of stakes a year.

The next sentence is not easy to say. After inserting the hairpin, your Li family really ignores this son-in-law. Taking three steps, can't the lives of Wang Ju and his sister be guaranteed? Will your daughter still suffer a loss? Besides, Wang Ju is still growing rapidly. When he is twenty years old, only God knows how much he has grown.

Wang Ju was not angry. As a parent, he must have a long-term consideration. Could it be that his daughter's nature would let her marry a beggar or a villain?

This is not snobbish, but care for his children. What is snobbish? It is purely a dislike of poverty and love for the rich. Then he will not be able to sit here today.

Wang Ju replied calmly: "I also said in the village that letting them control the output of Xia Guojian is actually just about how much effort it takes to shoulder the heavy burden. I am still small now, just be able to have enough food and clothing. I can't think too much for the time being, study is my key now."

He was going to go to worship Zhang Zai as his teacher, but he didn't say anything.

That's not to be an ordinary student of Zhang Zai. If that happens, Zhang Zai should not have too many disciples.

But if you want to become Zhang Zai's personal disciple, you must have a good knowledge, not his previous life's knowledge, but his knowledge in classics, poetry and essays.

At least his foundation is still relatively poor, but most officials of the Song Dynasty had a survey system. Zhang Zai would transfer to Weizhou after staying in Yunyan County for at most three years. Could it be that he would go to Weizhou to study? So this time must be realized at the end of this year or next New Year's Day, the sooner the better. But if you want to do it early, you must study hard.

This is the hairpin.

After the detailed post, the male and female parents will meet, and the male and female themselves will also be present. In fact, it is a blind date. If the man is not satisfied, he will take out two colored pieces to the woman to shock him. If he is satisfied, the man takes out a golden hairpin and put it on the woman's head, it is the label, which is the man's person. There are many etiquettes when he is in the face, but there is no hurry. Both parties can discuss in advance or quit.

But before inserting the hairpin, parents of both sides will also communicate.

Wang Ju had parents, but the Jiang family could not come, so he had to let his second uncle replace him. Then there were Li Yuanwai and his wife, Li Fei'er, Zhu Huan and the matchmaker.

Mr. Li looked at each other, and Wang Ju spoke freely and was quite satisfied. Besides, Wang Ju also said that there were still six years left, and he could regret his kinship if he was not good. Of course, this is Wang Ju's confidence. So what else to say?

The two nodded.

Zhu Huan immediately said, "Xiao Lang, why don't you insert the hairpin?"
Chapter completed!