Duan Laohan is actually not old, he has just turned 32 years old this year.

The reason why he was called "Old Man" by his companions was because his face was so wrinkled, and his thin and thin body was crushed by a long life of poverty, so this underogatory nickname was firmly on his head.

He was originally a craftsman in the Nanjing Bow and Arrow Academy, and after he got married at the age of 16, his daughter-in-law gave birth to eight children in one go; The people are prosperous, but the meager income of the Bow and Arrow Academy makes the family's livelihood extremely difficult; His daughter-in-law spun and weaved day and night, and his eight monkey cubs climbed up to the Purple Mountain next to the Bow and Arrow Courtyard every day before dawn to dig wild vegetables, so that they could barely make a living!

So when the people of the Yang family came to the Bow and Arrow Academy to recruit people this year, he didn't ask about other situations, so he asked, "Can you make a family of ten people have enough to eat?", and when he got a positive answer, he moved his family to Niudao without hesitation.

Sure enough, the people of the Yang family didn't lie to him, and after arriving here, he found that it was not too easy to eat a full stomach: he could earn 2 taels of silver a month in the bow and crossbow group, and his daughter-in-law was recruited by the tobacco field as soon as she came, and she often earned more than him, and she could get nearly 3 taels of silver when she was good; And even if a family of ten breaks their stomachs, and the vegetable gold is deducted at the end of the month, it will only be less than 1 tael of silver!

What made him even more ecstatic was that his eight monkey cubs not only didn't have to dig wild vegetables everywhere, but also spent a penny on the school!

Oh my God! When he was in Nanjing, how dare he want his children to go to school - just because of his husband's shackles, he can't earn it for a year!

The days are unexpectedly good, and Duan Laohan is very attentive to his work - he is already a meticulous person, but now he is becoming more and more strict.

He was a glue worker in the Bow and Arrow Academy, and he still did his old job here: when he glued those pieces of wood and bamboo, he really achieved a tight fit - "zero tolerance" became his new title for Duan Lao Han in Niu Island.

Perhaps it was because of this title that Childe summoned him. And arrange for him to be the project leader of this distillation group.

He was trembling about this - after all, the interlacing is like a mountain, what is this distillation for, and he is really blind.

But he didn't dare to disobey Childe's arrangement - the people on Niudao all knew that their happy life today was all given by this handsome young man.

Of course, what made him even more excited was that the person in charge of this project not only had his monthly salary risen to 10 taels of silver. And at the end of the year, there is also a one-tenth of the dividend - that is, for every 1,000 taels of silver earned by the distillation group, he can get 100 taels!

As for not understanding what distillation is? It doesn't matter, someone teaches!

The person who taught him is actually Childe himself! Well, of course, there's the sloppy Taoist who never washes his clothes.

Duan Laohan still remembers the scene when the distillation group first started.

Here, next to the beach on the west side of Ushishima, two cauldrons were erected under a simple shack – one filled with seawater, the other with clear well water; As soon as Duan Laohan saw this posture, he understood that Gongzi was going to boil salt, and he couldn't help but wonder in his heart. I've seen this boiled salt myself, what else is there to learn?

Sure enough, he saw that Childe lit the pot containing seawater first, but Childe's subsequent actions really confused him: several large pieces of brown sugar were thrown into the well water, and Childe also let Duan Laohan keep stirring, and the whole pot soon turned red, and then Childe lit the firewood under the pot.

While the two pots were steaming, Childe patiently explained to everyone. finally let Duan Laohan understand that inside this sea water. There are many other things besides salt; Similarly, brown sugar water is not only sugar in it.

And what their distillation team has to do is find a way to separate the salt from the sugar!

Filtration is the most important means; And what is used for filtration is the best Songjiang cloth, which is fine and compact.

With Childe's explanation. The water in the two pots is getting hotter and hotter, and finally boiling; Gongzi removed the fire of the brown sugar water, and asked Duan Laohan to carry the steaming cauldron and pour it on the three layers of Songjiang cloth arranged in advance at an interval of 50 centimeters each, and the first layer of Songjiang cloth was immediately dyed red. The second layer is pale red, and the third layer is almost unchanged.

The brown sugar water filtered through three layers of Songjiang cloth had become clear and transparent, which made the sloppy Taoist who was in charge of recording a stack of surprises, but the conversation between him and Gongzi Duan Lao Han couldn't understand it very well, what "temperature", "solubility", "impurities" These terms Duan Lao Han didn't know what they meant.

However, he understood what Childe asked him to do, it was very simple, that is, to boil the clear brown sugar water, and in the end, what was left in the pot was the frosting of white flowers.

The whole process was like a magic trick, which made Duan Laohan stunned, and his heart began to tumble back with those rumors that Gongzi was the crown prince of the Dragon King - if it wasn't for the Dragon Prince, how could he turn brown sugar into deathly expensive snowflake candy so easily?

Compared with the boiling of snowflake sugar, Duan Laohan was also full of confusion about Gongzi's method of boiling salt.

In Duan Laohan's opinion, boiling salt is just boiling the seawater dry, but the seawater in the pot has not yet been boiled dry, and when he could just see the boiling seawater becoming turbid, Gongzi asked him to put out the fire, and also carried the cauldron to the top of another pool while it was hot, where only a layer of Songjiang cloth was spread; After the boiling sea water was poured over, the Matsue cloth was full of white and fine particles.

After tasting those grains, Duan Laohan felt that what he had eaten in the past few decades was not called salt at all! - This refined salt has no miscellaneous taste other than saltiness, especially the astringent bitterness!

The whole process is simple and clear, Duan Laohan can understand what he should do after watching it once, but at this time, Gongzi spoke again, saying that this is just a "laboratory method", he asked Duan Laohan and the sloppy Taoist to study the "salt drying method", and said that Duan Laohan finally understood after a long time, it turned out that Gongzi meant to let God help them work!

Bodhisattva! O Buddha!

Duan Laohan's legs trembled when he heard this-who is Childe? Even God he wants to command!

Today, after grabbing the thick layer of refined salt on the Songjiang cloth, Duan Laohan finally believed it - Gongzi really has this ability! He can really let God help him make salt!

This is a series of salt-drying pools designed by the sloppy Taoist and artificially created by Duan Laohan - the highest part is a sunbath the size of a table of eight immortals, with a depth of only 10 centimeters, filled with seawater, and left to the sun; After the pond is completely dry, it is washed with a small amount of seawater, and then falls down the stone trough to a lower filter tank, on the top of which is covered with a sheet of Songjiang cloth, the refined salt is left on the cloth, and the remaining brine flows into the filter tank.

Duan Laohan was still holding the refined salt in a daze, only to see Chu Fan and Lingxuzi walking over one after the other, he quickly clapped his hands to meet him, and when he walked up to Chu Fan, he couldn't help but kneel on the ground and shouted, "Childe, you are really a living immortal!" …… This refined salt is hundreds of liters a liter, we don't have to do anything to pick it up for nothing! …… Fat! Earn a lot of money! ”

Chu Fan and Ling Xuzi looked at each other and smiled, bent down to help Old Man Duan and said to him, "This is just an experiment...... The real Yantian still has to count on you...... The bottom of the salt pan must be made of large bluestones, and there must be no gaps between the stone slabs, otherwise the seawater will leak down the gaps...... In addition to refined salt and snowflake sugar, your distillation team will also make alcohol in the future...... The purification of sulfuric acid also depends on your distillation group......"

Speaking of this, Chu Fan patted Duan Laohan's shoulder and smiled, "What is this bit of refined salt!" In the future, alcohol and sulfuric acid will come out, and that's what really makes a lot of money! …… Well done! ”

The words made the old man both excited and ignorant.

Alcohol? Sulphuric acid? What kind of magic is that? (To be continued.) )