Nan Zhi hadn't expected Duan Yinian to be so fast.
Duan Yinian assembled the equipment according to the blueprints, but he didn't know how to use it yet.
Nanzhi received the equipment, which was divided into two parts: the first part was the dissolving device, and the second part was the filtering device.
Nan Zhiyi is an explanation for Duan Yinian.
"First, dissolve the extracted salt ore in water to filter out impurities that are insoluble in water."
The second part involves further refining the salt by passing it through a filter tank, where additional substances can be added for further filtration.
Duan Yinian held a small notebook in one hand and asked, "Miss Nan, may I ask what would be a good addition to this?"
Nan Zhi: "Wood ash".
"Wood ash? What is that?"
Nan Zhi: "For example, add the burning material such as rice straw, stir it evenly, and let it stand for half an hour."
Another person said, "Wood ash is black, wouldn't it be redundant to mix it in?"
Nanzhi nodded, "Very good. You must communicate promptly if there are any problems. Asking questions in a timely manner will allow you to gain more insights."
The person being praised blushed, never expecting to be praised in the first place.
Especially under such circumstances.
Nanzhi continued to explain, "Adding wood ash is to allow another part of the impurities in the brine to precipitate out."
Nanzhi looked at the person who had just asked the question.
"As for your question about whether adding wood ash will affect the purity of the salt, my answer is yes."
Nan Zhi explained as she worked on it.
"For example, when you add wood ash, the solution will turn black or gray, but after a while, the wood ash will settle at the bottom of the solution."
Solution?
Duan Yinian thought for a moment and concluded that the so-called solution should be salt water.
He patiently wrote down everything Nanzhi said.
Nanzhi finally understood why her teachers liked students who took notes back in her school days.
That's roughly it. It's a blessing to have the knowledge you impart taken seriously.
Naturally, we should show more care and concern for students like this.
She spoke for three hours straight. Lin Jiaxiang, who had eaten a meal and then came over, admired Nanzhi more and more.
Don't be fooled by the fact that she's a young woman—no, a peasant woman.
She knows far more than he does.
Even Duan Yinian, who had always looked down on women, gained a new understanding of the word "woman" after Nan Zhi's series of actions.
Many people in the salt fields know how to make salt, and after learning the method in Nam Gyi, they couldn't wait to go back and try it.
Nam Gyi had a lot of salt mines mined, and then they operated them one by one on this set of equipment.
Duan Yinian helped from the side.
Two hours later, a pot of fine, white salt appeared before everyone.
Compared to what Nanzhi made before, the production volume of this equipment is significantly higher.
Lai Shi was overjoyed.
"Oh, thank you so much, young lady."
Lai Shi wished he could worship Nanzhi as a living Buddha.
Salt mines are different from salt lakes. In ordinary salt lakes, crude salt is produced simply by taking out the water and drying it.
However, salt mines require the ore to be extracted first, then dissolved in water, and finally dried.
Not only does it add an extra production step, it also wastes time and manpower.
Moreover, the salt mined from salt mines is far less pure than the salt produced by sun-drying salt lakes, and contains many impurities.
Only the poor would buy this kind of salt.
After deducting those expenses, the total profit isn't much.
Using the method of the Southern Girl, the coarse salt was purified, resulting in fine salt with fewer impurities and better quality than that produced by other methods.
Lai Shi held the salt in his hands, as happy as if he had received gold.
Following Nan Zhi's method, Duan Yinian finally mastered the secret after two attempts.
Nanzhi was very pleased.
"Next, you will teach them one by one."
Duan Yinian respectfully replied, "Yes."
This method of refining fine salt is not difficult to learn, and Nanzhi believes that it won't be long before everyone in the saltworks knows how to do it.
Her mission is complete.
Lin Jiaxiang couldn't stay any longer.
There was nothing here. Seeing that Nanzhi had completed her mission, he quickly ordered someone to drive the carriage back.
Lin Chengyi had received prior notice and led Zhang Hongfu to the city gate to greet them.
"Father, what brings you here?" Lin Jiaxiang asked in surprise.
Just when Lin Jiaxiang thought his father was going to praise him,
Lin Chengyi walked straight up to Nanzhi.
Lin Jiaxiang's hands froze in mid-air.
Just like that, he left?
He turned his head and saw his father fussing over Nanzhi.
No, Lin Jiaxiang wondered.
Who is his son, really?
The group returned to the county government office, where Lin Jiaxiang reluctantly took out the salt that Nanzhi had previously refined at the salt mine.
Lin Chengyi was overjoyed.
"Okay, okay."
He kept saying "good" repeatedly, unable to express his excitement in words.
"There is hope for Lingshan County."
Zhang Hongfu is old and easily moved to tears.
"The adult's long-cherished wish has finally been half fulfilled."
With salt mines comes revenue, which in turn brings money to the government, ensuring that people will no longer suffer from hunger and cold in winter.
Looking at Lin Chengyi kneeling in front of the door, Nanzhi was filled with emotion.
This is what a good official for the people looks like.
Because of the restaurant incident, Nanzhi declined their invitation to stay for dinner.
Hurry back to the restaurant.
To her surprise, the restaurant's renovation was already complete.
Upon seeing Nanzhi, Liu Dezhi calmly ran over.
It wasn't that he wasn't in a hurry, but rather that his body wouldn't allow it.
He was panting heavily with every step; just running to his master had exhausted all his strength.
This chapter is not finished, please click the next page to continue reading!
Continue read on readnovelmtl.com
