Hand over the jade seal first [Infrastructure]

Xiao Zirong subconsciously glanced at the emperor and Xiao Ji who were sitting on the chariot.

Because the emperor's guard of honor was not fully brought in, they needed to take a smaller chariot at this time and wait outside to change to a larger chariot.

Xiao Zirong said directly: "I'd better send you out."

It's not to see off the emperor, but to get a second look at Xiao Xuexing.

Xiao Xuexing originally didn't want him to make this trip, it was cloudy outside, and he didn't know if it would rain, what if it rained when Xiao Zirong came back?

But thinking about the road from Taoyuan City to the outside, Xiao Zirong has made a smooth road, and it seems that there is no need to worry about the muddy road after it rains.

And Xiao Xuan was obviously very happy, and let his nephew get into the car directly.

Xiao Zirong: ...

He doesn't want to get in the car, he wants to ride a horse with Xiao Xuexing outside!

But now he was sending the emperor off in name, so he had no choice but to get on the carriage, and occasionally glanced at Xiao Xuexing through the window.

Xiao Xuan still hasn't given up on persuading him: "Why don't you go back to Jiankang together, your mansion has already been tidied up."

Xiao Zirong's excuses are all ready-made: "That can't be done, the production of anti-inflammatory drugs has reached the final stage, if this drug is made, it will not only benefit my brother, it can cure many diseases, and now I can't leave , not to mention the expansion of the saltworks.”

During this period of time, everyone has seen what the refined salt produced by Taoyuan City looks like.

According to Xiao Zirong, there is actually no big difference between the appearance of sea salt and the salt produced in ordinary salt fields, except that sea salt contains more iodine.

Originally, Xiao Zirong thought that Qi State occupies most of the coastline, and everyone's iodine intake should be good.

Then when he saw Xiao Xuan's previous recipe, he felt deeply worried.

Even if Xiao Xuan is the emperor, he actually doesn't eat much seafood, there are kelp and sea vegetables, but Xiao Xuan doesn't like to eat that much, let alone sea vegetables.

As for other seafood such as fish, shrimp and crab, there are not many.

Xiao Zirong was very surprised at the time, and it was only later that he realized that the distance between Jiankang and the sea is not too far, but it would take a day or two to transport seafood.

Seafood is the most perishable. If it is not stored properly after being out of the water, it will stink within a few hours.

If you want to transport it, you must freeze it, and there is no quick-freezing technology these days, and the seafood tastes not very good after being frozen in the ice cellar. In addition, you must ensure that there is enough ice when transporting these seafood, otherwise once it melts, it will not be directly frozen. If you cook it, it will also stink.

Two or three days of road maintenance has been in a state of ice, which is simply sky-high in Qi, where the climate is warm and humid.

Even Xiao Xuan can't eat it every day.

So they eat more dry goods, but only a small proportion.

After Xiao Zirong learned about it, he didn't know what to say. It's fine to stick to the expensive sea salt, and he can't eat seafood.

Not to mention dry goods, seafood and seafood, what is eaten is a fresh word.

In contrast to this is the fishing village by the sea. They eat a lot, but they are also poor, because the seafood cannot be sold, except for the dried ones, and most of the rest are eaten by themselves.

The price of those dried goods sold inland is sky-high, but those merchants didn't spend much when they bought them in fishing villages.

Of course, Xiao Zirong is also a little ashamed. Taoyuan City is also quite close to the sea, which belongs to the distance that seafood will not be damaged when transported to Taoyuan City.

But during this period of time, the menu set by Xiao Zirong didn't have a lot of seafood.

Not for anything else, just because Taoyuan City... There is no better fishing boat.

Even the boats used by the fishermen in those fishing villages are not very good, some are even shabby, but Xiao Zirong doesn't want his men to take risks to go fishing.

They don't lack food, and they don't live on it, so why bother?

And Xiao Zirong didn't have time to renovate the ship at that time, after all, what he has to do now is more important, um, at least it seems to him more important.

Let's talk about the fishing boat later.

This still put him on the agenda.

So it is impossible for him to leave Taoyuan City in a short time.

Xiao Xuan was just trying to persuade, from the perspective of an elder, he felt that Xiao Zirong must have suffered in Taoyuan City.

After all, the conditions here are not good, not to mention the food is good, those recipes are also made by Xiao Zirong, and Taoyuan City can produce so many dishes due to the lack of resources, Jiankang has more ingredients, maybe it can make better food thing.

But from a rational point of view, he also felt that Xiao Zirong needed to stay in Taoyuan City now.

Because Xiao Zirong also had a deal with Wang Yuanjia of Guangyang in the Northern Wei Dynasty.

Xiao Xuan and Yuan Ke thought about the same thing, finally had the opportunity to break into the inside, so he couldn't let it go.

It's just that the news from the two sides is still not equal. Yuan Ke thought that Xiao Zirong was a capable person behind him, and didn't know Xiao Zirong's true identity, but Xiao Zirong knew that Yuan Jia was now the king of Guangyang.

This information gap seems to be nothing, but if it is used properly, it can still get a lot of useful information.

Even if Xiao Zirong is not allowed to deal with the line with King Guangyang in the future, he needs to cultivate a reliable and trustworthy talent.

Xiao Zirong sent Xiao Xuan and others to the outside of the mountain and watched them get on the dragon chariot before saluting and said: "Uncle, the journey is smooth, please take care."

Xiao Xuan smiled and waved to him and said, "Go back quickly, the sky is overcast, don't get caught in the rain."

Xiao Zirong took a step back with a smile, and the motorcade started slowly.

Xiao Xuexing had always followed Long Ren, and when he was leaving, he passed by Xiao Zirong, reached out and patted Xiao Zirong's shoulder and said, "Eat well, sleep well."

This exhortation... is really down-to-earth.

Xiao Zirong looked at him with some reluctance, and instantly had an urge to keep him.

But in the end, he still restrained himself, didn't say much, nodded vigorously, and watched him leave, only when Xiao Xuexing's tall and straight figure disappeared gradually, he heaved a long sigh.

Liu Cainiang said from the side: "City Lord, let's go back."

Xiao Zirong responded. He glanced at the people behind him seeing him off, and felt that everyone seemed to be in a cheerful mood. He thought that the few months the emperor had been here made everyone choked up.

How did he know that everyone's joy was mainly because Xiao Zirong stayed and didn't go back to Jiankang with him.

Everyone finally let go of their hearts, the city lord is still their city lord!

Zhai Xi, who came out to see him off, asked energetically after getting rid of the worries in his heart: "City Master, the carbonated water you mentioned has been produced, what shall we do next?"

Xiao Zirong was a little ashamed when he came back to his senses. When he was making carbonated water, he thought that if it went well, he would be able to make anti-inflammatory medicine in a few days.

At that time, he still thought that maybe he could witness a miracle before Xiao Xuan left.

In the end, he didn't expect a bottle of wine to put him down directly, and then made his mood mess up for several days.

After finally accepting that he did have such rebellious thoughts, he started busy making some convenient food for Xiao Xuexing to carry on the road.

So the whole experiment stopped there. Although he wrote the experimental process to Zhai Xi, Zhai Xi and the others couldn't understand it. No matter how detailed the process was, they could only understand what was going on after reading certain phenomena.

Zhai Xi didn't dare to mess around, not because he was afraid of the failure of the experiment, but because there were not many synthesized materials.

Xiao Zirong wanted to make some anti-inflammatory drugs for Xiao Xuexing to take first, and then produce a little bit during his treatment, so he didn't rush to expand the scale.

The main thing is to expand... Taoyuan City is really not big enough.

Although it seems that only five materials are needed to synthesize sulfonamide in the end, there are many steps required to make these five materials. If you want to expand production, you need an entire industrial base.

Not to mention that there are still people living in Taoyuan City, even if there are no people, there is not enough space in this area.

The production of these things is not just a factory. Where do the workers come from?If there are people, there must be some supporting facilities, right?At least there should be a place for everyone to eat and sleep.

In this way, when all kinds of people come down, they have to look outside.

So Xiao Zirong decided to wait until the thing was finished. Before the finished product, he rashly asked for a place to build an industrial base. It is estimated that no matter how much Xiao Xuan spoiled him, he would not agree.

After all, when this industrial base is built, anyone with a discerning eye can see that the land belongs to Xiao Zirong, and others can take over if they want to, but the question is who understands those things?

After Xiao Zirong went back, he put all other things aside, and then began to work hard on other things.

After the carbonated water is made, the place that needs to be used is to make sodium bicarbonate.

This thing is actually relatively simple, that is, carbonated water and sodium hydroxide are mixed in a certain proportion.

The difficulty lies in the preparation of sodium hydroxide, but Xiao Zirong has already produced electricity, so basically saving a lot of work.

After the sodium bicarbonate was produced, Xiao Zirong ticked off the record list again.

Then the next thing you need to do is acetic anhydride.

At this time, we need to use our old friend-shells.

Of course, the use of shells is actually because there is calcium carbonate in the shells.

After burning the shells, add vinegar and sulfuric acid to obtain glacial acetic acid, and react glacial acetic acid with iron to obtain ethylene copper.

Here, Xiao Zirong used a relatively simple method, that is, directly made an iron pipe, and poured glacial acetic acid into the iron pipe.

After obtaining ethylene copper, pour ethylene copper into the iron pipe to obtain acetic anhydride.

At this point, basically all the reagents needed for sulfonamide are ready.

Xiao Zirong's heart was swept away from the haze of Xiao Xuexing's departure, and he rolled up his sleeves and said, "Come on, let's make persistent efforts to make the medicine today!"

The others were also very excited when they heard it. After working for a long time, they were about to see results, and the dawn was just around the corner. Of course, they had to work hard!

then……

With a bang, black smoke faintly rose from the preparation room.