Qin Mu returned to the mansion with an umbrella, and he thought about a lot of things along the way.

In the past, he didn't want to deal with these court officials, the bureaucratic meaning was too strong, and the estrangement and etiquette between the classes made him very uncomfortable, but if he wanted to develop, he had to do so, and he had to reach a certain position in the future to let go of his hands and feet to do what he wanted.

Soon after returning home, the sun came out, and the air was filled with a smell of earth, which made people feel sullen, but fortunately, there was no greenhouse effect in ancient times, and a few breezes were not so uncomfortable blowing through people.

As soon as I returned to the lobby, I saw Xiaoqing directing the family to sort out the things they bought.

"Put them all neatly for me, put the same things together, there are number cards here, paste them one by one."

Qin Mu walked in and looked at the number plate with Arabic numerals on the table with a question mark on his face.

"Where did you learn it?"

Xiaoqing turned around and saw Qin Mu at this time, "Brother Qin, you're back!" Numbered bibs? Isn't that what you gave to those scholars? I stole it next to me, hehe. ”

Qin Mu walked around her, "Xiaoqing, Xiaoqing, you are really a genius, and you will also be a scholar in the future." ”

From the beginning of knowing Xiaoqing to the present, Xiaoqing's learning ability has refreshed Qin Mu's cognition of the ancients again and again.

"Xueba? What to learn? ”

"No, it's a compliment on your cleverness, but this is okay to mark the count, don't use it on the ledger." Qin Mu reminded.

"Why?"

"Although the Arabic numerals are simple and clear, they are easy to tamper with, for example, this 3 can be easily changed to 8."

Xiaoqing was a little disappointed, she was keeping the account books alone, did Qin Mu say that she didn't trust herself?

"I don't distrust you, Xiaoqing, there will be more people in the house in the future, and there will be no time to take care of it, it is easy to make a mess, if you want to keep accounts faster, I will teach you how to use your mobile phone to keep accounts, and then record a fingerprint for you, and you can use it in addition to me in the future."

Xiaoqing listened in a fog, but she knew that Qin Mu was comforting her.

Qin Mu looked at the things he bought on the ground.

"It's sheep fat, right?" Qin Mu smelled the smell of sheep from afar.

"Yes."

Qin Mu looked at them one by one, "Dyes, pink, red, blue, well, not bad, three white cloths, three bags of soaphorns, ten jars of wine, what about flowers?" ”

Number Two replied, "In the backyard, there are only wild flowers at this time of year, all of which are yellow and white petals. ”

"Chrysanthemums, is there enough of them?"

"Guaranteed enough, four or five carts were pulled one after another, and all of them were removed and put in the warehouse."

"Well, it's very good, very careful, your name is Chen Tam, right, I didn't expect you to be not small, but you are quite careful, you add ten more cents."

Chen Thong hurriedly said happily: "Chairman Xie! ”

"Brother Qin, I really can't figure out if these can really make Yelan rumors?"

"Of course it's okay, let's eat first, and then we'll talk about it after eating."

In fact, Qin Mu was not very sure in his heart, the reason why he bought so many raw materials was to prepare for the failure of the test again and again.

It was late at night, Qin Mu and the three of them came to the backyard after eating, and they were the only ones left in the Li Mansion at this time.

Qin Mu rolled up his sleeves, "Wu Zhengji, you go and make a fire and light the two stoves." ”

A drying stove and distillation stove have been built this afternoon, and now it's time to test the quality.

The raw materials used to make soap are plant animal fats, alkaline substances, water, flavors or colors.

Fat with mutton fat, first of all, to deal with the smell of mutton fat, first boiled in salt water into a gel state, and then filtered out fine mutton fat with gauze.

Alkaline substances are made with soaphorn, which is ground into powder, and the precipitate is a high-alkaline substance after sifting out the powder and soaking in water with a sieve.

Qin Mu uses a distillation machine used to distill spirits to refine essential oil through bamboo tubes, and then uses oil-water separation method to refine flower essential oil.

During this period, the high liquor was distilled and used to make flavors, and Qin Mu wanted to see the difference between a soap made with essential oils and a soap made with essential oils.

Qin Mu estimated that it would take at least two or three days to complete these processes.

If the amount is small, one night should be enough.

After all, he just made a sample to give it a try.

In order to control the measurement, Qin Mu had to sacrifice his scale cup as a temporary mixing tool.

The most difficult step in making soap is the alkali ratio, which is too high to burn the skin, and too low to cleanse the skin.

I don't have PH test strips, so I can only feel them with my body sense.

Qin Mu handled the grease, Xiaoqing was responsible for putting the flowers into the steamer, and Wu Zhengji was running on both sides to add firewood.

Seeing Wu Zhengji so busy, Qin Mu asked, "I'll go buy a cart of charcoal tomorrow and come back, the efficiency of burning firewood is too low." ”

"Charcoal! Qin Mu, this charcoal can only be used if it is either rich or expensive, don't look at it is summer, and that car will cost eighty taels of silver. ”

"Huh? It's so expensive! Yes, the carbon content of charcoal is too low nowadays, and the combustion efficiency is also very low, and the only benefit is that it is long-lasting.

If only there was coal. ”

Wu Zhengji squatted in front of the stove and wiped his sweat, "Coal? Don't think about it, no one can dig up that thing, it's all in the mountains, and that thing is all black smoke when it burns, which is unsightly. ”

"Oh?" The corners of Qin Mu's mouth rose, "This is a big way to make a fortune." ”

Qin Mu never thought that he would have the opportunity to live the life of a coal boss in Shanxi in his lifetime.

After an hour and a half, Qin Mu finally prepared all the ingredients.

He picked up a small sip of essential oil in the bowl and sniffed it: "It took half a car of flowers to refine such a point, alas, the chrysanthemums are still too small, and they can't refine any oil and water..."

Thinking of what he said just now, Qin Mu laughed.

Xiaoqing and Wu Zhengji looked at Qin Mu's smile and asked, "Why are you so happy?" ”

Qin Mu patted his face and cleared his throat, "Well, happy, the following is the moment to witness the miracle." ”

Qin Mu poured the alkaline water into the cup and tried it with his fingers, and a sharp burning sensation jumped from his fingertips to his whole body.

"Add water."

It took several times to reach the feeling of soap, and he was almost running out of ten fingers.

"Xiaoqing recorded the data, alkaline water, 100 liters, 1400 milliliters of water, and the alkali content was about seven or eight percent."

Qin Mu could only give a rough idea, after these data were recorded, they would only be used as a reference when deploying them later.

Then Qin Mu mixed the alkaline water, essential oils, and grease together and stirred wildly until it became a paste that was neither soft nor hard.

Qin Mu used the principle of adding more water and adding more water to add noodles to add other things in an appropriate amount.

Then he added the natural dye used to dye the cloth, and he first mixed it with yellow dye, and the color looked a bit like yellow.

"Get some lime and get me the whitest."

Wu Zhengji hurriedly went to the yard to look for it, and it took a long time to find a small piece.

"Here we are."

"No, it suddenly occurred to me that lime can't be added, forget it, just yellow."

After stirring evenly, Qin Mu poured the puree into the beaten iron plate, brought it to the drying table and began to dry.

"Hehe, let's wait, Mr. Wu, put the stove fire smaller, it's this kind of small fire, just keep the temperature."

Xiaoqing looked at Huang Tongtong's soap with a face full of joy.

"How long will it take?"

Qin Mu thought for a while, "It will take about two or three days, I hope it won't rain tomorrow, let's continue to do it, continue to debug, you take good notes, it's very important." ”

"Hmm!" Xiaoqing nodded excitedly.

It was all too new to her, something she had never experienced in her life.

The three of them worked hard for another hour, and finally finished making six samples.

Looking at the layers of soap in the high drying oven, Qin Mu sat on the ground with a happy smile.

Xiaoqing and Wu Zhengji also sat on the ground and leaned over.

Qin Mu looked at the stars in the night sky, the deep sky exuded a faint silver-blue star at his fingertips, inlaid in the air like jewels, exactly the same as when he was a child in his memory when he was a child and took refuge in the shade of the night.

"It's a beautiful night tonight!"