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Chapter 12 Chen's Chemical Industry (Part 1)

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    Chen Wanrong did not object to Chen Zairong joining the army. It might not be a bad thing for Chen Zairong to join the army with his excellent conditions. However, the two elders were too worried. In order not to worry them, they had to help dispel this idea.

    If Chen Zairong insisted on joining the army, Chen Wanrong would have to find a way to help convince the two elders. Unfortunately, he did not insist. Chen Wanrong could not tell whether this was a good thing or a bad thing.

    It is a good ending for the matter to be resolved in this way. After all, the family dispute has ended, and Chen Wanrong is also happy.  Seeing the three people hugging each other and crying together, Chen Wanrong couldn't help but wipe his tears.

    Mrs. Chen Wang wiped her eyes and comforted her: "Zai Rong, don't cry! Old man, look at you, why are you crying if you have nothing to do?"

    Chen Laoshi stretched out his calloused hands to wipe Chen Zai Rong's tears, and said lovingly: "Zai Rong, don't cry." Chen Zai Rong hummed in a sensible manner, wiped his eyes and stopped crying.

    "Wanrong, thanks to you today." For the first time, Chen Laoshi was praised for Chen Wanrong.

    A few times ago, in order to dispel Chen Zairong's idea of ??dropping out of school, Chen Laoshi had even thought of death and threatened Chen Zairong with death before he had to give in. Today, Chen Wanrong intervened and resolved the storm easily. In fact, Chen Zairong  Honest was unexpected and couldn't help but admire Chen Wanrong's ability to coordinate.

    "Brother, thank you." Chen Zairong also came to say thank you.  Chen Wanrong's ability to reconcile conflicts and take into account all parties, he could accept it without saying anything. What's even more rare is that he praised Chen Cairong's character of knowing his mistakes and being able to correct them, which impressed Chen Cairong deeply. This thank you was very sincere.

    Chen Wanrong smiled happily and said: "Don't say those polite words, eating in the same pot looks too much. Dad, you rest first, I will heat up the vinegar for you."

    With such filial piety, what father wouldn¡¯t be happy?  Chen Laoshi was so happy that there was only a small slit left in his eyes: "Then how can it be done? Wanrong, let me do it myself." He said he would do it by himself, but he sat down with his mouth open, crossed his legs, and prepared  Enjoy the family happiness of being filial to your son.

    Mrs. Chen Wang rolled her eyes at him and revealed his mentality: "Look at you, Shan Xiang said he would do it himself, but he just sat still."

    Chen Laoshi not only didn¡¯t feel embarrassed, but felt content and happy. He laughed twice as an answer.

    "Brother, I'll come." Chen Zairong rushed into the stove, poured the vinegar into the earthen pot, brought it to the stove, and simmered it in the fire.

    He was the cause of today's turmoil. He wanted to show his filial piety to Chen Laoshi, so Chen Wanrong stopped fighting with him and allowed him to do whatever he wanted.

    The fire in the stove was raging, and soon the vinegar was hot, and the sour smell spread throughout the room.  Chen Zairong brought the earthen jar to the table, picked up a piece of alum with chopsticks and put it into the hot vinegar. After a while of stirring, the alum dissolved in the earthen jar.

    "Dad, drink it." Chen Zairong handed the hot vinegar to Chen Laoshi and called him "dad" sweetly.

    "Leave it alone, I'll do it myself." Chen Laoshi declined politely, but his hands had already taken it. The sour vinegar tasted like a delicacy in his mouth, and he drank it in a few sips.  The sounds sounded one after another.

    After finishing the drink, he turned the earthen jar over and exposed the bottom of the jar. He opened his mouth very comfortably, as if he was drinking fine wine.  Chen Wang scolded: "Why are you so bright? I'm not drinking!" For Chen Laoshi now, this sour vinegar is not comparable to wine. It is a jade liquid with a long flavor and endless aftertaste.

    Chen Wanrong was very happy about Chen Laoshi¡¯s childish performance and couldn¡¯t help but smile.

    "It's getting late, I'm going to make dinner." It was almost dark, so Chen Wang stood up and went to the kitchen.

    Only then did Chen Laoshi realize that his work was not finished, and he stood up: "The plow is still a few strokes away, I'm going to do it. Zai Rong, you simmer." He went to work alone, but he didn't ask Chen Wanrong to help him.  It¡¯s really rare.

    Mrs. Chen Wang teased him: "Where does the sun come from today? You don't want Wanrong to help you."

    After resolving this turmoil, Chen Wanrong's status in Chen Laoshi's mind has changed drastically. He is no longer the piece of wood who can be manipulated by him, but a smart and alert person. Chen Laoshi is embarrassed to continue  Chen Wanrong, the emissary, found an excuse to rebuke Chen Wang: "Look, what are you thinking about? Wanrong is delivering the bucket today. It's so cold and he's exhausted. I won't let him rest for a while."

    ??Mr. Chen and his wife, who had been married for decades, knew very well about his twists and turns. Knowing that he was being tough, they chuckled and rolled their eyes at Chen Laoshi before entering the kitchen.

    After buying back the alum and salt, I hadn¡¯t mixed the reagents yet, so I happened to take advantage of this time to do it. Chen Wanrong suppressed his laughter, went to the kitchen and took out a wooden basin, and took it out from the water.?I scooped some boiling water from the jar into the wooden basin, then poured half a basin of cold water into it and stirred it evenly with a wooden stick. I stretched out my hand and found that the temperature was quite suitable.

    After pouring all the alum into the basin, Chen Zairong stretched his neck and asked in confusion: "Brother, what are you doing all this?"

    "Make something." Chen Wanrong stirred in the basin with a wooden stick.

    Chen Zairong's curiosity was aroused. He rolled up his sleeves and said, "Brother, let me help you stir." He grabbed the wooden stick from Chen Wanrong's hand, held it with both hands, and started stirring.

    Stirring the prepared reagents required moderate and even force, slow speed, not too fast. He didn't know these requirements, so he took on a martial arts posture and used as much force as possible. If he used too much force, the water flowed rapidly, and a hollow vortex appeared in the middle.  .

    From the perspective of martial arts training, the water flows in the basin at such a high speed without overflowing. He is very skilled in controlling the force. However, this is a chemical operation and is absolutely unqualified. Chen Wanrong hurriedly gave him instructions: "Slow down, slow down."  Point. Don¡¯t use too much force, be moderate and even, don¡¯t be too fast, just stir slowly.¡±

    "Brother, don't worry, I'm good at this, no matter how fast you go, it'll be no problem." Chen Zairong didn't understand that this was a chemical operation, not martial arts, and he sounded quite proud.

    If you don¡¯t slow down, it will definitely overflow. Chen Wanrong¡¯s tone increased a lot: ¡°Slow down!¡±

    "Oh." Chen Zairong said oh several times, and then it slowed down. The water flowed slowly, and Chen Wanrong affirmed: "That's it."

    The alum crystals slowly dissolved until they were all dissolved, and then Chen Wanrong poured almost two kilograms of salt into it.

    Chen Zairong was confused again: "Brother, what are you doing with the salt? This is not cooking."

    Tanning is a key step in turning skin into leather and is related to the quality of the leather.  Leather tanning needs to be carried out in a weak acid. Alum dissolved in water will generate free sulfuric acid, which can promote the water absorption and expansion of the protein fibers in the leather.  The purpose of adding salt is to prevent excessive swelling.

    This complex chemical process cannot be explained to Chen Zairong, a person with no basic knowledge of chemistry, so Chen Wanrong simply did not explain it.

    There are many methods for tanning leather. The methods used in modern society include chrome tanning, vegetable method, aldehyde tanning, oil tanning, and alum method.  Among them, the chrome tanning method is the most common, because the biggest advantage of chrome tanning is its short time, which only takes two or three hours to meet the requirements, while other methods take longer, dozens of hours, or even as long as a week.

    For Chen Wanrong, the use of chromium tanning was out of reach. There was no chromium trioxide in the Tang Dynasty, and there were no conditions for manufacturing it. Alum and salt were relatively common in the Tang Dynasty, and the raw materials were easy to obtain.

    What¡¯s more important is that alum is cheap, costing only a few cents per catty, while table salt is relatively expensive, costing ten cents per catty.  This cost is very low compared to the income, and the investment is not large. It is very suitable for Chen Wanrong's extremely poor family to start a business from scratch, which is why Chen Wanrong chose the alum method.

    Until all the salt was dissolved, Chen Wanrong said: "It's done."

    As soon as Chen Zairong put down the stick, he couldn't help but be curious anymore and asked: "Brother, what are you doing?"

    "Selling money." Chen Wanrong answered simply, frowning: "You have to find something to put it in."

    "Can this be sold for money?" For Chen Zairong, alum and salt are ordinary things that don't attract people's attention. He doesn't believe it if they can be sold for money. However,  Still actively solving problems for Chen Wanrong: "Brother, there is a bucket upstairs. It has not been used for a long time. It is just right. I will get it for you."

    Without waiting for Chen Wanrong to speak, he grabbed the wood protruding from the upper floor with both hands and jumped upstairs like a leaping ape in the mountains.

    The height of more than ten feet went up so easily. This skill was very beautiful. Chen Wanrong praised it.

    Before Chen Wanrong could finish his admiration, Chen Zairong had already appeared at the entrance of the building carrying a wooden bucket. Chen Wanrong said hurriedly: "You wait, I will move the ladder for you."

    "Brother, what kind of ladder do you want? It's not like you don't know what I'm capable of." Chen Zairong jumped up and jumped down from the building. He made only a slight sound from a height of more than ten feet. This skill was very cool, Chen Zairong  Wanrong applauded again.

    A smoky smell hit his nostrils. When Chen Wanrong saw that the bucket was dark and covered with smoke and dust, it had not been used for an unknown amount of time. It seemed that it needed to be cleaned.

    "Brother, do you want the lid? If not, I'll throw it upstairs." Chen Zairong held up the dark lid, pretending to throw it away.

    Chen Wanrong hurriedly stopped: "Yes. When I wash it off, you can write a few words on the lid."

    Chen Zairong asked a series of questions: "Brother, why do you want to write? What words do you write?" (Remember the website address: www.hlnovel.com
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