Hand over the jade seal first [Infrastructure]

Xiao Zirong sat in the wheelchair without any psychological burden, but as soon as he went out, he met Xiao Xuexing who was coming back from the next dynasty.

Xiao Xuexing looked at Xiao Zirong sitting in the wheelchair with a proud expression on his face, and couldn't help laughing: "What are you going to do?"

Xiao Zirong said: "The scheelite is here, I'm going to the Ministry of Industry."

Xiao Xuexing turned around and took the wheelchair from Ah Yin's hand and said, "Let's go, I'll take you there."

Xiao Zirong said hastily: "Go and rest for a while just after you go to court."

Xiao Xuexing said: "If I don't follow you, you will forget to eat when you turn around."

This kind of thing didn't happen once or twice, Xiao Zirong also knew his own shortcomings, when he concentrated, he really forgot everything and just remembered the matter at hand.

Strange to say, he has never been so immersed in other things, only when doing manual work or various experiments.

He was a little embarrassed and said: "I will remember, and Ayin Aman and the others are following me, and they will remind me when the time comes."

Xiao Xuexing remained unmoved: "They also reminded you before, was it useful?"

Xiao Zirong suddenly felt wronged.

Although A Yin and A Man are usually more presumptuous in front of him, they actually become very careful when encountering serious matters.

Because they were afraid of disturbing him and causing the failure of the matter at hand, the two of them were particularly embarrassed when it was time for dinner.

Call, what if it fails?The city lord will not blame others, but if he fails, he will be in a bad mood, and he won't even smile for a whole day.

No, irregular meals are not good for the stomach.

Thinking of this, Xiao Zirong thought it would be good for Xiao Xuexing to follow.

After the two arrived at the Ministry of Industry, Zhai Xi immediately greeted them and said, "Why did the city lord come here in person? We have already read the document you gave us, and we will start the experiment as soon as possible. Don't worry."

Xiao Zirong waved his hand and said, "I came here mainly to explain to you the rationale for these things, otherwise you won't be able to figure it out by then, and you still won't be able to do it in the future."

Zhai Xi didn't say anything after hearing this, she was also very curious, the document looked like a heavenly book, but after careful observation, she found that the context on it was very clear.

She followed behind and took a peek at Xiao Xuexing, feeling more and more worried in her heart—is the city lord of their family really going back?

We all know that the emperor has started to pack his things recently. We also know that the emperor cannot stay in Taoyuan City for a long time, and he will definitely return to Jiankang.

It's just that the city lord of their family is the king of Xuancheng, and the regent can push the wheelchair himself. Will such an identity stay in Taoyuan City for a long time?

On the one hand, everyone thinks that the city lord will be able to live a better life when he returns to Jiankang, and everyone also hopes that their city lord can live better, but on the other hand, they feel a little uncertain, and feel that once the city lord leaves, they will lose their backbone. .

Xiao Xuexing felt Zhai Xi's gaze turned to look at her, and Zhai Xi immediately lowered his head in panic, not daring to meet the regent's eyes.

Xiao Zirong didn't know Zhai Xi's worry, and asked, "Is the soap ready?"

Zhai Xi immediately replied, "It's all ready."

Xiao Zirong snapped his fingers and said, "Okay, let me teach you how to make sulfuric acid."

Soap alum is green alum, and Xiao Zirong asked people to prepare green alum to make sulfuric acid.

Producing sulfuric acid from vitriol is the easiest method selected by Xiao Zirong, because the raw materials are easy to obtain, and the preparation method is also simple, just add water and heat.

Green vitriol contains ferrous sulfate, which is not stable in nature. After strong thermal decomposition, iron oxide, sulfur dioxide, sulfur trioxide and water will be obtained, and sulfur trioxide will react with water to generate sulfuric acid.

In fact, the ancestors used this method long ago. They would put the vitriol in a still to calcinate to produce sulfuric acid, and they also gave the sulfuric acid a name - vitriol oil.

However, the extraction efficiency of this method is not high, because the conversion of sulfur dioxide into sulfur trioxide is the most critical point in the process, but this reaction is very difficult to carry out without interference, and the extraction depends entirely on luck.

What Xiao Zirong can do is to eliminate those disturbances as much as possible, but he speaks logically about theoretical things, and if he is really asked to operate...he doesn't know how to operate.

He came here to let people record the process while staring at the reaction of the green violin, try to avoid what is wrong in the future, and at the same time explain to them what these reactions are all about.

It sounds like he doesn't need to do it, but in fact, after a day's work, Xiao Zirong only feels more tired than letting him do it once.

Sulfuric acid is a dangerous thing. In order to make everyone vigilant, Xiao Zirong instilled many times that this thing is dangerous and should not be touched lightly. When making it, you must strictly follow the process.

As a result, everyone was very cautious, especially when Xiao Zirong and Xiao Xuexing were both here, they became even more timid. Many places were so cautious that Xiao Zirong couldn't help but laugh.

But he didn't correct it, anyway, they will know where to be careful and where to relax a little when things go well in the future.

During this process, Xiao Zirong discovered that the most time-consuming thing was the process of heating the vitriol.

Green vitriol needs pyrolysis, and the information Xiao Zirong found said that it needs to be above [-] degrees.

Now because only firewood can be burned, blowers must be used to reach this temperature.

Today's blowers are only manual blowers, and no matter how powerful they are, it is impossible to operate them without interruption, and they need to change hands in the middle, and no matter how fast the manpower is, the efficiency is somewhat low.

Fortunately, the end result is good, they made sulfuric acid after all.

After seeing the sulfuric acid carefully sealed in the glass bottle, Xiao Zirong said: "Next, follow this procedure, do more, it will be useful."

After he finished speaking, he couldn't help rubbing his temples wearily. Xiao Xuexing looked at the time and asked, "Going back?"

Xiao Zirong nodded, she had talked too much just now, and now she really didn't want to say a word.

After the two came out of the laboratory, they took off their protective clothing and gas masks.

It is said to be protective clothing, but it is actually made of oilcloth. It may not be very effective against bacteria and fungi, but at least it is a protection. The gas mask is mainly worried that the gases produced during the heating process of green vitriol will be poisonous.

After Xiao Xuexing took off these things, he felt cool for a while, and when he turned his head, he saw Xiao Zirong, who was still full of energy when he came, was listlessly sitting in the wheelchair, his face was a little pale, and he didn't look very comfortable.

He walked over and touched Xiao Zirong's forehead, and when he found a slight fever, he said: "You are not allowed to come tomorrow." After speaking, he added: "You are not allowed to come until your foot is healed."

Xiao Zirong nodded slightly and did not object. The main reason is that it is really inconvenient for him to sit in a wheelchair. Everything needs to be brought over by others to take a look at it. Things like teaching can still be carried out in the future.

Anyway, the various procedures he taught Zhai Xi and them are all right, and it doesn't matter if they don't understand them temporarily.

When they came, they came here on foot, and when they went back, because the sun was strong at noon, Xiao Xuexing had someone drive the car ahead of time, and after getting into the car with Xiao Zirong in his arms, he gave him a small amount of iced fruit juice.

After Xiao Zirong finished drinking, his energy was revived, and he felt that his whole body was relieved, so he said very confidently: "More."

The answer Xiao Xuexing gave him was to take the cup away from his hand, and said very ruthlessly: "No, drinking too much is not good for your health."

Xiao Zirong smacked his lips and didn't say anything else. It was indeed too hot in the preparation room just now. After all, green vitriol had to be heated. The heat plus the airtight protective clothing and gas mask made it too much for a person to suffer in it.

Xiao Zirong decisively decided to give a subsidy to those who made these things in the Ministry of Industry.

The temperature is not too high now, waiting for the hottest time is too much to suffer inside, um, let’s get a high temperature subsidy.

There is also a blower. The manual blower is too backward and inefficient, so he has to find a way.

After Xiao Xuexing finished speaking, he was already prepared for Xiao Zirong to act coquettishly, but he didn't expect the other party to appear very quiet without saying anything.

As soon as he turned his head, he saw Xiao Zirong sitting there with a pensive expression on his face.

Xiao Xuexing still touched his forehead worriedly and asked, "What are you thinking? Still feeling uncomfortable?"

Xiao Zirong immediately shook his head: "No, I'm just thinking about the electric blower."

He couldn't admit that he was uncomfortable, if he really admitted, maybe Xiao Xuexing would call the doctor to prescribe him some bitter medicine.

Seeing that he really had no problem, Xiao Xuexing leaned back and said, "Electric blower? Is there any difference?"

After hearing this, Xiao Zirong immediately got excited: "Of course it's different. The electric blower is highly efficient, and it requires less manpower to save resources."

Xiao Xuexing originally wanted to say what kind of resource is manpower?But thinking about the situation in Taoyuan City, he nodded and asked, "Very troublesome?"

Xiao Zirong shook his head: "It's not too troublesome, but I just feel... It feels like making these things is a chain of circles. I thought that as long as you make sulfonamide, the ingredients needed for the kind of medicine you need It’s good, but it’s only after I started doing it that I realized that many other things are needed.”

Seeing his frown, Xiao Xuexing said, "If it's not easy to do, don't do it."

Anyway, he feels pretty good after drinking the medicine now. Except for taking the medicine every day, he looks no different from ordinary people, and he doesn't feel weak and weak like before.

Xiao Zirong shook his head and said, "It's not difficult to make. I originally thought about making the medicine before this summer, but now... I can't even say when I will be able to make it."

After hearing this, Xiao Xuexing smiled and said, "Don't be in a hurry, shouldn't I just sit beside you? Take your time, don't tire yourself out."

Xiao Zirong thought about it too, there was really no rush for such a thing.

But even though he thought so, when he returned, he hurriedly started to draw all the drawings of the electric blower, and called Zhai Xi to tell her what to do.

Because there is a human blower as a prototype, the electric blower is simply replaced with a different power source, and it is not so troublesome to do it. On the contrary, the generator that was built before finally came in handy.

After all, Xiao Zirong originally wanted to use a generator to electrolyze the solution. When the scheelite was not extracted, the electricity did not know where to use it.

The wiring had been prepared a long time ago, so Xiao Zirong asked someone to set up a preparation room near the generator, so that the wiring would not have to go so far. Now even Xiao Zirong had no idea how to lay the wiring in the city.

He didn't study urban planning, so he could only learn from scratch. Fortunately, he not only has materials but also various reference cases. Even if he can't understand it, he can just find a small town similar to Taoyuan City, and he can apply it more or less. .

It's just that some things didn't go so smoothly. On the third day after the electric blower started working, the generator broke down, which directly led to a power outage in the preparation room.