I invited Yuan Tiancheng into the house for a while and chatted for a while. Yuan Tiancheng said goodbye and left. Before leaving, I repeatedly told Chen Wanrong that if you want to cook something, you will be satisfied even if you come to me.

After seeing Yuan Tiancheng off, Chen Wanrong carefully inspected the jar. The firing level was really unspeakable. It was very high. If it weren't for the lack of suitable equipment at present, Chen Wanrong would have collected it as a work of art.

Especially when the thread is rotated, the cover is very tight and should not leak. Even if there is leakage, the problem will not be too big. The sulfuric acid cannot be escaped no matter what. Chen Wanrong is looking forward to it very much.

Another thing to do is to build a stove. The jar is not big, only two feet in size. Although there are many stoves in the house, none of them are suitable for them. Another one must be built.

Chen Wanrong was no longer good at building a stove. He asked a hired employee who could build a stove to help. Chen Wanrong helped him. Chen Wanrong thought that there was not much calorific value, and it was not next time. It was a one-time job. The stove didn't need to be built too well. It was possible to use it. Even if it was built with a few stones, there was no problem with the staff. However, the hired staff was meticulous and honestly, and it was very good. Chen Wanrong was embarrassed not to let him do his best, so he could only let him do it.

The stove is well built, but it takes too long to finish it until after lunch. Put the jar on it and try it. It is of the right size and is very good. Throw some firewood inside and dry it.

After walking around, the processes were proceeding in an orderly manner, so there was no need to worry. Finally, I came to the woodworking workshop and saw Wang Zhongze and Chen Laoshi taking two carpenters to make the kettle for brewing and distilled liquor, which was almost ready.

"Master Wang, you are busy." Chen Wanrong looked at the pot with joy.

Wang Zhongze smiled and said, "The boss said where he went, and he was very busy. This is what we should do."

Chen Laoshi took the conversation as if he was expressing his merits: "Wanrong, this will be fine after this. Don't worry, you will definitely not miss it. Master Wang's clearing of the crack is this." His thumbs up, and he was amazed.

Cleaning the joints on carpentry means using a plane to clean the edges smoothly, otherwise it will cause leakage if it is not "seamed".

Chen Wanrong was confident about Wang Zhongze's skills and smiled and said, "I am naturally relieved when Master Wang did it."

"Our boss, this can be done today. However, the other one will be in three or two days, and the wooden box will be rushed." Wang Zhongze said apologetically.

Chen Wanrong hoped that they would do it now, but the production was still the top priority. Although the anesthetic was good, it was not on the right track yet, so he couldn't come even if he was anxious. He smiled and said, "Don't be anxious, just do it if you have time."

There is no problem with the carpenter here. Chen Wanrong carried an axe, took a thick wooden board, went to the room where he was bold and alum, and started preparing.

Put the wooden board on the ground, pick up the alum, place it on the board, and gently smash it with an axe. If it hits hard, it will definitely be smashed in one go, but it will splash everywhere. Nowadays, alum is extremely precious to Chen Wanrong, but it cannot be lost even if it is a little bit.

After smashing it a few times, grind it into fine powder and put it in a clay pot. The reason for smashing it into powder is to better heat. If it is not smashed fine, the heat will be uneven and the efficiency will be greatly reduced.

The Tang Dynasty had no suitable crushing equipment, so it could only use this most primitive method.

After only a few pieces were smashed, a crisp sound like jade sounded: "Brother Chen, what are you doing? Are you doing sulfuric acid?"

Needless to think about who was coming, I looked back and saw Zheng Qing entering the house with light gait, her pretty face full of doubt. After a few days, she became more beautiful and refined, wearing a sky blue shirt, which made her look more charming.

Women have to wear clothes, and they will be beautiful when they wear good clothes on their bodies. Zheng Qing is different. No matter what clothes they wear, they are so cute and pity-provoking.

Chen Wanrong stood up and smiled and said, "I'm preparing, but I haven't done it yet."

Qing'e came in from behind, sniffed at Chen Wanrong, and made a naughty face, mocking Chen Wanrong: "What a lazy guy. The guys are all busy, but they ran here to enjoy the cool air. Are you embarrassed?"

She always likes to ridicule Chen Wanrong, as if Chen Wanrong has a grudge with her. Chen Wanrong smiled and said maliciously: "Let me tell me, I will do sulfuric acid and I will blow you out later and I won't let you play." This kind of thing is absolutely fun in the eyes of Tangren.

"Who cares?" Qing'e didn't take it seriously, and she whispered her mouth and was extremely disdainful.

Zheng Qing stood in front of Chen Wanrong in a pretty face, blinked her bright eyes, looked at Chen Wanrong, and said coquettishly: "Brother Chen, don't tell me if you want to do it, so that you can see it. This kind of alum can be discovered, and they have made contributions. If they hadn't taken you on that path, you wouldn't be able to find it."

The reason why Zheng Qing was able to find the alum was indeed because she had made great contributions, so she was fine for her words. Chen Wanrong smiled and said, "That's right, I have to thank you. Didn't I just start preparing? I haven't done it yet."

"You're so nice." Zheng Qing smiled, as if a hundred flowers were blooming, and she was so beautiful that Chen Wanrong was stunned.

Zheng Qing took the axe from Chen Wanrong's hand, sat on a stool, put a piece of alum on the wooden board, and gently smashed the axe in his right hand, and the alum was broken into several small pieces, and asked, "Brother Chen, did you smash it like this?"

She was skillful and like a veteran. Chen Wanrong nodded and said, "That's it. Just hit it a few more times, and you'll hit it thinly."

"I understand." Zheng Qing smashed the alum a few times, put it in the clay pot, picked up another piece, and smashed it down again.

Chen Wanrong hurriedly stopped him and said, "I'll do it."

Zheng Qing refused and looked at Chen Wanrong with Miaomu: "Brother Chen, do you think that someone is not good at smashing it?"

There is no difference between it and Chen Wanrong, so how dare you think it is not good? Chen Wanrong just doesn't want her to be tired and smiles: "Don't be too careful, I think this is the work we men do, how can you do it?"

"Thank you, Brother Chen for your concern. Brother Chen, I am not as bad as you think. I even did farm work when I was a child, let alone this." Zheng Qing smiled and the room was full of spring.

Zheng Jianqiu knew from his mouth that when Zheng Qing was a child, her family was in trouble and suffered a lot. It should be a fake job. Chen Wanrong had to let her go. She turned around and went out, went to the carpenter to get an axe and a piece of thick wood, returned to the house, put the wooden boards, and turned around to find a stool.

The stool was in the corner, just turned around, but when Chen Wanrong turned around, he saw Qing'e squatting on the ground and put a piece of charcoal on the wooden board. In a naughty blinking at Chen Wanrong, he stretched out his right hand like a jade: "Master Chen, thank you. You are so thoughtful to treat guests!" He took the stool without hesitation, sat on it, picked up the axe and gently smashed it on the charcoal.

Since Chen Wanrong met Qing'e, she called Master Chen Wanrong for the first time. Chen Wanrong thought she had heard it wrong. Qing'e laughed and said to Chen Wanrong: "Master Chen, do you think that they can't smash it?" After hitting a few axes, a piece of alum was broken into several pieces, and then turned into powder after a few strokes. The movements were skillful, no different from those of an experienced man.

The two masters and servants were so delicate, but they didn't expect that they had such skills. Chen Wanrong really couldn't imagine that they smiled and said, "You smashed so well, do you want me to praise you a few words?"

"Well, praise me, I'm listening." Qing'e's face was old and nodded.

Chen Wanrong was unwilling to be a good man, so he curled his lips: "I think beautifully!" He had to get an axe and a wooden board. The three of them worked together, and soon they smashed twenty or thirty kilograms.

Crystal beads of sweat oozed out from Zheng Qing and Qing'e's pretty faces. Chen Wanrong couldn't bear to be too tired, so he put down his axe and said, "Stop for a while, drink some water." He went out of the house.

Zheng Qing put down the axe, stood up, panting, her chest was slightly undulating, and she went out. She said that it was not difficult to get tired, and she was a little thirsty. Qing'e put down the axe, gasped for a few sips, and went to find water to drink.

There are so many people working, and there are people drinking water at any time. This water must be prepared. A room is specially used for boiling water. Mrs. Chen was doing it in the room. When she saw Zheng Qing coming in, she smiled like a pistachio. She quickly put down her work and grabbed Zheng Qing's hand: "Miss Zheng, what have you done? She is so tired that she sweats. Come and rest for a while. I'll pour you water."

Look at her intimacy, like her own daughter, she ignored Chen Wanrong.

"Thank you aunt." Zheng Qing was as intimate as she saw her, and she had no polite concerns: "I'll wash my hands first." There were a lot of gallbladder on her hands, and she would drink water if she didn't wash it. It was too unhygienic.

Without thinking, Chen Wang blurted out: "I'll pour you water." He poured a basin of hot water, handed it to Zheng Qing, and complained to Chen Wanrong: "Wanrong, you are really, how can you make Miss Zheng tired? You just do it, and you still have to do it, and your mother won't be able to do it."

Zheng Qing stuck out her tongue at Chen Wanrong with a smile on her face, which excused Chen Wanrong: "Auntie, don't blame Brother Chen, I did it myself."

"That's not the case. If you are tired, you will feel distressed." Chen Wangshi still refused to support him and looked at Zheng Qing with great affection.

Zheng Qing washed her hands, and Chen Wang handed over a bowl of hot water. With a thank you, she took it and sat on the chair and started drinking. Qing'e washed her hands, held the water, sat next to Zheng Qing, and rested.

Mrs. Chen handed the hot water to Chen Wanrong, her face sank, and she reminded her: "Wanrong, you are not allowed to do it. Look at you, how tired Miss Zheng is?"

This sentence is verbal, but fortunately, no one in the room has any bad intentions. Chen Wanrong followed her words and said, "Don't do it anymore, don't do it anymore."

Looking at Chen Wanrong's scolding look, Qing'e was the happiest and stuck out her tongue at Chen Wanrong. However, what surprised her was that after Chen Wangshi finished exorcising Chen Wanrong, he stretched out his right hand and helped Chen Wanrong stretch his collar. He looked at Chen Wanrong with great affection, and Qing'e's smile froze on his face.

After drinking the water, Chen Wanrong went to see the stove. It was already dry and could be used. He smashed so much alum and could do it once or twice. Chen Wanrong had never done it before, and he was not experienced enough and needed to test it. It would be better to do it once.

Move the jars and put them on the stove. The stove is specially designed for this jar. It has a vertical inner wall and a step. The jars are just right.

Qing'e's mouth was fast. When she saw this jar, she couldn't help laughing and mocking her: "Which smart man made this jar? What can she hold with her mouth down?"

Not to mention that such strange jars may not be available in the Tang Dynasty, even in Chinese history. It is normal for her to laugh. Chen Wanrong raised his head and smiled and said, "I did it. Children don't understand, don't laugh!"

Qing'e gave Chen Wanrong a thumbs up and praised: "Smart people!" But there was a sarcastic look on her pretty face, and there was no meaning of praise at all.

Zheng Qing covered her mouth with her left hand, her beautiful eyes full of smiles, and her delicate body kept trembling. If she hadn't been concerned about Chen Wanrong's face, she would have laughed out loud.

Mrs. Chen couldn't help but scold her: "Wanrong, you are really doing some fun things and making people laugh."

When you see the function, you can't laugh. Chen Wanrong didn't tell the difference. He loosened the lid and looked inside. It was very clean and could not be cleaned. He would just wipe it with a cloth piece.

Zheng Qing approached her side, and Miaomu looked at her for a moment. She said that it was a cylindrical shape, and it was almost the same as saying it was a bucket. She also had a strange spout. Although she was knowledgeable, she was confused: "Brother Chen, what's the use of you?"

"Make sulfuric acid." Chen Wanrong answered questions and answers.

"Smart man, what is this?" Qing'e pointed to the thread on the mouth of the pot and asked curiously.

Chen Wanrong is no longer a good-looking gentleman, and he raised his head: "Smart people, you think about it yourself."

Qing'e's face was very unhappy, she shook her head to the left, and ignored Chen Wanrong. Zheng Qing looked at the spout for a while, then the lid for a while, and the brightness in her eyes became more and more intense, and she hit her light palm, making a slight slap: "Brother Chen, this is also your invention? It's really a wonderful structure! This thing can be used in other places, and with it, it will be much more convenient."

She saw through the wonderful use of threads at a glance, and Chen Wanrong praised her sensitive reaction from the bottom of her heart and smiled: "This is a thread, and it can save a lot of trouble if you use it well."

With his thumb up in his right hand, Zheng Qing praised him: "It's wonderful, wonderful, and wonderful!"

Chen Wanrong poured the gallbladder into the jar and cleaveed it flat with his hands. He picked up the lid, screwed it tightly, and did almost the same work. Judging from the current situation, there should be no air leakage, but we still can't be careless. The preparations are done in the head, and there is no harm, so we should prevent it!

Find a few pieces of cloth, bring a basin of clean water, soak the cloth in the bottom, and put it on the edge of the lid. Even if sulfur trioxide leaks out, the water on the cloth will be dissolved so that it will not be everywhere and pollute the environment.

Another most important step is to make a basin of clean water and place it on the ground. Then pad it with a brick and let the spout penetrate the water until it enters four or five inches into the water before giving up.

There are many ways to make sulfuric acid, and it was the eighteenth century that it was produced by the lead chamber method. In ancient times, there were two most famous methods for producing sulfuric acid. One was that in the eighth century AD, the Arab alchemist Jabir put saltpeter and green alum together for distillation to obtain "alum essence", which is actually sulfuric acid.

In the middle of the 7th century AD, the alchemist Hu Gangzi of the Tang Dynasty obtained sulfuric acid by burning the alum. This method can be roughly divided into three steps. The first step is that after heating, the copper sulfate pentahydrate loses crystallization water and becomes copper sulfate. The second step is to decompose copper sulfate to form copper oxide and sulfur trioxide. The third step is to let sulfur trioxide come into contact with water, and a chemical reaction occurs to generate sulfuric acid.

After decomposition, sulfur trioxide enters the water through the spout, and will react chemically with the water and eventually produce sulfuric acid. This is why Chen Wanrong does this.

All the preparations were done, and Chen Wanrong said, "You can raise the fire." He clapped his hands and prepared to raise the fire. Qing'e had already taken the lead in occupying the seat: "I'll burn it." Without waiting for Chen Wanrong to agree, he hurriedly threw the firewood into the stove hole.

Sulfuric acid is about to come out, Chen Wanrong is happy and jokes with her: "Will you burn it?"

Qing'e turned her mouth, too lazy to answer Chen Wanrong's question, and raised the fire on her own. After a while, the flames rose in the stove cave and laughed out loud.

The big thing about sulfuric acid is done, but there is another small thing to prepare. Chen Wanrong looked at it and said that the fire was good. As soon as the temperature rose, the copper sulfate would decompose. He reminded Zheng Qing and the others not to touch things randomly and turn around and leave.

Zheng Qing, Qing'e and Chen Wangshi looked at the jar in surprise, without turning their eyes, and they didn't pay any attention to Chen Wanrong leaving.

Find a wooden stick of two feet long and rinse it with clean water. Chen Wanrong came back with the stick. Sulfur trioxide reacted with water to form sulfuric acid. If it was not stirred, it would cause the local concentration to be too high, resulting in slowing the reaction speed. Stirring is the solution.

The three Chen Wang and the other two did not care about their image at all. The necks were stretched long, longer than the neck of a giraffe, staring at the jar. Chen Wanrong smiled and said, "Don't stare there, look here." The stick gently stirred it in the clear water a few times, and placed the stick diagonally against the edge of the basin.

The jar was closed and opaque, and it was impossible to see the phenomenon inside. It was useless to stare at it for a day, and it became a matter of watching the changes in the water. After hearing this, the three of them turned their eyes to the clear water and had nothing. Chen Wang asked nervously: "Wanrong, what changes have the water?"
Chapter completed!