Sun San has an old house not far from Wu Degui's house.

After Su Baiyi was cleaned, he threw away all the old items inside, bought a few sets of tables, chairs and benches from the market and put them in as a temporary office and project dispatch headquarters.

There are two stoves in the house, and the temperature rises immediately after burning, and it doesn't look so cold in the cold winter.

It's just that the smell is a little big, and there should still be something like carbon monoxide.

Fortunately, it is not a residence, just an office, and the old house has almost no sealing effect, and the smell can be dissipated with a little ventilation.

Su Baiyi stipulated that the leaders of the three groups should come to the headquarters once a day to report their work and arrange the progress and work plan properly.

When the first work report was made, the three of them were very nervous, especially Bao Erhei, who almost shrunk his body and lowered his head lower than Hou Fangyu, and followed him into the room at the back.

Fu Lin reported first.

His job was very simple, at the beginning, he was to build a furnace for firing glass, and Su Baiyi still gave him the drawings, and the rest was just to get some building materials.

"The venue has been chosen, it is in the southwest corner of the Yuyuan, which is the closest to Guide Mansion, and all kinds of materials are easy to transport in!" Fu Lin stood in front of Su Baiyi and respectfully reported: "I have calculated that there are not many bricks and stones used in each furnace, so I am going to build six sets of firing furnaces, and the wages and materials are expected to be about three taels of silver, and the remaining seven taels of silver will be kept for the purchase of raw materials for firing glass." ”

"Got the materials ready?" Su Baiyi asked.

"If you buy it, you can send it over tomorrow, and the people will find it, and you can build a furnace after the materials are delivered!"

"Hmm!" Su Baiyi nodded with satisfaction: "It's okay to make six stoves first, by the way, what are the plans for the future?" ”

"What's next?" Fu Lin really hadn't thought about it yet, he wanted to build the furnace as quickly as possible, "It's to build the furnace, and when the furnace is built, won't you be able to burn the glass according to the method that Mr. said when you buy raw materials?" ”

"That's not going to work!" Su Baiyi was a little dissatisfied: "You have to arrange personnel and time reasonably, there are as many as twenty people under your hands, since the matter of building the furnace has been landed, you can arrange your subordinates to do it when it is implemented, you should go to the way of surveying the raw materials in advance, and after the comparison, you can easily calculate the cost of burning glass."

Is there a way out for charcoal?

Do you want to prepare one for the ancient blower?

There is also one of the most critical things called crucibles when glass is fired, do you have crucibles? ”

The crucible requires high temperature resistance, and only a few pottery in the Ming Dynasty can meet the requirements, which must be specially fired by those pottery craftsmen.

Fu Lin's cold sweat flowed down his head.

Seemingly simple things, there are so many doorways!

"Sir, I was wrong!"

"It's not your fault!" Su Baiyi said gently: "It's just that you have experienced fewer things, and you are not thoughtful enough." You see, whatever we do, the preparation takes up a lot of time.

In the near future, we want to build an academy, as long as everything is ready, building an academy is very simple, just come and do it.

But is it actually that simple?

It is necessary to prepare materials, to acquire land and level the site, to relocate residents, to prepare money, to calculate, design, plan, and to hire workers to do the work.

All of this is preparation. ”

"Student understood!"

"Okay, you go down first, next, Hou Fangyu!"

Su Baiyi waved his hand to withdraw Fu Lin from the office, and then asked Hou Fangyu to come forward and said, "What progress have you made today, let's talk about it!" ”

"Mr. Hui's words, the students purchased some soybean oil, face soda, quicklime according to the requirements of this formula, and also asked people to carve two molds, one large and one small, you see!"

As he spoke, he handed a piece of paper to Su Baiyi and said, "These raw materials cost a total of five taels of silver, two strings of money were spent on carving two molds, and there are four taels of silver and eight strings of money left." ”

As he spoke, he took out two more molds from his cloth bag and placed them on the table.

Su Baiyi gently put down the paper and picked up the two molds to look at them.

One large and one small, the big one is about twice as large as the soap of later generations, and the small one is only five centimeters square.

At the bottom of the two molds, there is a reverse "elm" character carved, which is the signboard of the elm courtyard.

"The mold is well done!"

It's not difficult to know this thing, it's not difficult, it's just a moment of effort to carve it out in the hands of a craftsman.

"Master, I already have the conditions for production!"

Hearing Su Baiyi praise him, Hou Fangyu suddenly became excited.

"Hehe......" Su Baiyi responded lightly, then picked up the paper on the table again and said, "The raw materials have been purchased, where did you put them?" ”

"Put it in my house!" Hou Fangyu said happily.

"That means you've bought everything, but you haven't chosen a production site yet, have you?"

"Uh...... "That's true!"

"What about containers, you need containers to produce soap, did you buy containers?

Is there a drying rack for soap?

Did the big iron pot when the soap was boiled fall off? ”

Every time Su Baiyi asked, the sweat on Hou Fangyu's forehead increased by one drop!

Could it be that the temperature in this room is too high?

Hou Fangyu secretly wondered.

But I heard Su Baiyi's voice in my ear again: "Your thing, after it is produced today, you can take it to the market tomorrow to sell it, but have you thought about the specific sales strategy and method?"

It's a new thing, how do you let people know what it's for?

Do you go out wholesale and sell it to others, or do you go out into the street and shout for it?

Is the cost calculated?

Do you have a good idea of the sales price? ”

As soon as the call made Hou Fangyu's tears flow.

"Master, I was wrong, I'll change it right away!"

"Go ahead, go back and find a field first, and start production tomorrow!"

In the end, it was Bao Erhei's turn.

His face, which was originally blackened by soot, was even darker at the moment, and he stepped forward resignedly, stammering: "Master, I, I, I went back to make that still, but those pipes don't know how to do it well, please teacher!" ”

"Oh......" Su Baiyi nodded, in the Ming Dynasty, it is indeed very difficult to make that kind of strange-shaped elbow, especially a half-hung blacksmith like Bao Erhei.

"This is my negligence, you don't have to do the bends, I'll find a way to replace them with something else, you just go back and build those boilers."

"Yes, master!"

Bao Erhei's mood soothed a little, and said, "Please teach the master!" ”

"You and I don't have anything to teach, let's concentrate on the stove, and then talk about the rest when the stove is ready."

To produce essential oils, you still need to plant flowers, but it's really early to talk about planting flowers.

It's winter!

It's too early.

"You can go back!"

"Ah......" Bao Erhei couldn't believe his ears.

The two disciples who were valued by Mr. each took a handful, and they were all right?

"What, do you want to stay and eat if you don't leave?"

"No, no, no!" Under Su Baiyi's "obscenity", Bao Erhei ran out as if he was being chased by a ghost.

……

The next day, Bao Erhei was striking iron, and Fu Lin was still preparing raw materials.

Chu Lun led people to take measuring instruments and began the boundary survey of Yuyuan.

Hou Fangyu prepared all the materials early and invited Su Baiyi to the venue he had chosen to ask about making soap.

Su Baiyi took a look, and this time he was indeed ready.

The soap production site selected by Hou Fangyu is also in the southwest corner of the planning Yuyuan, which is next to the glass manufacturing furnace of Fu Lin, and dozens of people are busy together, which can be regarded as a kind of scenery.

"Go get water, the more the merrier!"

"You're ready to light the fire!"

When a young man took out a bucket of water from the nearby pond, Su Baiyi poured the water into a huge clay pot, put quicklime in it, and then the clay pot seemed to be boiling, and it was steaming outward.

"Stay away!" Su Baiyi said softly: "The chemical reaction I usually tell you about, this is the chemical reaction. In the process of digestion, quicklime absorbs water and releases heat at the same time, turning calcium oxide into calcium hydroxide. ”

As he spoke, he stirred it with a twig and added a lot of water to it.

When the lime has almost dissipated, a few bowls of ash water are taken out from the upper layer and placed in another porcelain jar.

The porcelain jar is very large, and it is not a problem to hold 100 catties of water at a time.

Take the flour soda that has been prepared a long time ago, weigh two catties and gently pour it into the porcelain bottle, stirring while pouring, a large amount of water vapor suddenly appeared in the porcelain jar, and the water in the porcelain jar evaporated as much as one-third in an instant.

The gray water inside instantly became muddy.

Su Baiyi hurriedly put cold water into it to lower the temperature.

After waiting for another half an hour, the reaction in the porcelain jar stopped, and the following layer of powdered solid was calcium carbonate, and the liquid above was the subject matter of this time, sodium hydroxide, that is, caustic soda solution.

After Su Baiyi scooped out the caustic soda solution, he folded several layers of fine gauze and filtered it twice to obtain a transparent pure caustic soda solution.

Divide into two halves, put half in a pot and heat at the same time, while pouring soybean oil into the iron pot.

When the water boils, the two students go and stir it with sticks.

Then observe the solution in the pot, if there is still undigested oil, add caustic soda solution here.

After doing this several times, knowing that the oil is fully digested, it is OK.

This is how to make soap from heat.

In fact, there is a cold soap method that does not need to be burned, and the soap made is better, but the cold soap can only be used after about a month of saponification reaction, which is too wasteful of time, so Su Baiyi is useless.

After the digestion of the soap liquid, it also needs to go through two special processes, one is salting out and the other is alkali precipitation, and the final result is pure soap paste without impurities.

Taking advantage of the relatively high temperature, mold one by one with molds and put them neatly on the shelves to wait for cooling, and the hardness will increase after cooling, which is the real soap.

A big pot of things, in the middle of the morning, made 200 pieces of small soap and 100 pieces of large soap.

"Okay, can you see how I did it?"

"See clearly!" More than a dozen people around answered at the same time.

"Alright, it's up to you to do it, all of them are small."