Hand over the jade seal first [Infrastructure]

Xiao Zirong was a little surprised when he received this letter. Ever since Wei and Qi fought a war, there was a tacit understanding between him and Yuan Jia.

However, Xiao Zirong doesn't need so many things now, so Xiao Zirong began to ask for some special products that only Wei Guo can have, such as fur ginseng and the like.

He thought that the deal between him and Yuan Jia would continue like this, but he didn't expect Yuan Jia to start writing to him on his own initiative.

So... is this Yuan Jia's own meaning or the meaning of the emperor Yuan Ke behind him?

After reading it, Xiao Zirong subconsciously wanted to ask Xiao Xuexing, but soon he remembered that Xiao Xuexing was not in Taoyuan City now.

And he... felt that he was a little bit on the top recently.

When Xiao Xuexing didn't find him back then, he made all the decisions by himself, why now he wants to ask the other party everything?

Even though his and Yuan Jia's identities are more sensitive, but with his status, it's not that he can't decide on his own.

What's more, his deal with Yuan Jia was almost clear, no one could use this to criticize him.

Why should he bind his hands and feet?

Xiao Zirong took a deep breath, thought for a while and wrote back a letter to Yuan Jia, saying: "Yes, yes, do you want a very delicate glass product? But this thing is expensive, and those things that were used for trading before can't be replaced by this. What I want...and I'm afraid you won't be able to make the decision, so let's just say it, I want charcoal."

Xiao Zirong's letter was mainly used to test Yuan Jia. Coal should not be considered a strategic material nowadays, but a relatively good energy source, but the nobles don't like it very much.

Because coal is relatively dirty, and there should be no anthracite, but there are more smokeless charcoal, so if he guessed correctly, there should be a lot of charcoal used among the nobles in the Northern Wei Dynasty.

But in any case, coal is a natural mineral resource, and it is generally not sold easily, especially to enemy countries.

There is no coal in the industry that Yuan Jia is involved in, and he probably won't be able to find it in a while. If there is no shadow of Yuan Ke behind this letter, then Yuan Jia will definitely write back to him depressed and say that he can't find it. Xiao Zirong At that time, it will be replaced with the same thing.

But if Yuan Jia asked him why he wanted this and how much he wanted, it must have something to do with Yuan Ke.

After Xiao Zirong finished writing the letter, he put the matter aside—the preparation room was redecorated, and he was going to continue the previous experiment again.

The new preparation room made him a little uncomfortable, but this unaccustomedness also reminded everyone to be careful and careful.

Xiao Zirong originally wanted to watch someone drop acetic anhydride into aniline, but Zhai Xi and the others disagreed desperately. It was really lucky that Xiao Zirong was not injured last time, otherwise they would blame themselves to death.

If that was the case, even if Xiao Zirong didn't punish them, he might not let them go when the regent came back.

Xiao Zirong had no choice but to stand outside the window and look at them, feeling like a class teacher in middle school.

Fortunately, everyone was careful enough this time, and what happened that day did not happen again, and the acetanilide was obtained smoothly.

After the acetanilide was processed, Xiao Zirong came in from the outside, and the remaining steps should not be too dangerous.

Xiao Zirong poured the chlorosulfonic acid prepared before into acetanilide, and what he got at this time was p-acetamidobenzenesulfonyl chloride.

Yes, it is such a long and tongue-twisting name.

When Xiao Zirong was explaining while explaining, he felt like his tongue was going to be tied up after speaking, while Zhai Xi and the others next to him were frantically flipping through the documents. Xiao Zirong had also written this down, but he forgot something There are many words in this matter that do not exist in this era.

If Xiao Xuexing would have asked him immediately, but Zhai Xi and the others didn't know, they thought it was because they didn't know enough characters, and they didn't have a dictionary these days, so they just waited for Xiao Zirong to teach them.

The result of Xiao Zirong's forgetting is that they need to write it down and then look for the words. Whether they can remember... depends on their own memory.

They didn't dare to bother Xiao Zirong, and Xiao Zirong didn't notice that he was now fully focused on the experiment.

Only the last two steps are left to complete, even if he knew it long ago, he couldn't help being a little excited.

Xiao Zirong added ammonia water to p-acetamidobenzenesulfonyl chloride to obtain acetamidobenzenesulfonamide, then added salt to boil, and finally rinsed with sodium bicarbonate.

The result is sulfanilamide, commonly known as sulfanilamide.

The obtained sulfonamide is a yellowish crystalline powder.

At the moment when Xiao Zirong said it was over, everyone stretched their necks and looked at that thing carefully.

Xiao Zirong carefully put the finished sulfonamide into the small glass bottle for storage, he shook it slightly, watching the powder in the bottle shake slightly, he let out a sigh of relief.

He turned his head and handed the glass bottle to Zhai Xi and said, "Have you remembered the procedure explained before?"

Zhai Xi held the glass bottle with both hands as if holding a peerless treasure, and didn't even dare to nod too hard.

"Well, let's start. By the way, the previous experimental procedures should be recorded. You all followed me to do it once. Next, follow this procedure. Do more, and it will be used."

After finishing speaking, Xiao Zirong walked out of the preparation room and looked up at the sun in the sky in a very good mood.

Today is a rare sunny day in recent days, which is quite appropriate.

Xiao Zirong happily went back and wrote a letter to Xiao Xuexing, telling him the good news.

However, the medicine could not be sent there, he had to make sure that there was no problem with the medicine before giving it to Xiao Xuexing.

And Xiao Xuexing, who is far away in Jiankang, is far less leisurely than when he was in Taoyuan City these days. He almost started to enter a busy state as soon as he returned to Jiankang.

When he was in Taoyuan City before, he had actually dealt with a group of people.

Yes, he was clearing obstacles for Xiao Zirong at that time, some people couldn't move, but some people needed to be cleaned up.

It happened that the change in the official system proposed by Xiao Zirong was equivalent to making the cake bigger in disguise, but Xiao Zirong didn't seem to have any intention of using this matter to expand his influence.

Xiao Xuexing also knew that Xiao Zirong was now devoting himself to researching and developing medicines for himself, since Xiao Zirong couldn't make a move, he would help Xiao Zirong to pave the way.

In the future, no matter whether Xiao Zirong is the prince or not, he will have the opportunity to choose. The best state is to advance, attack, retreat or defend.

However, he didn't forget his previous purpose during the time he came back, in order to understand why Xiao Zirong became so strange.

He wanted to know if it had something to do with him, so he didn't write to Xiao Zirong after he came back.

If Xiao Zirong didn't write him a letter, then he would go back to Taoyuan City to ask for clarification after the matter came to an end.

On the last day of his deadline, Xiao Zirong's letter arrived in his hands.

After Xiao Xuexing got it, he slowly disassembled it. After watching it from beginning to end, he found that Xiao Zirong was saying that the drug was successfully developed. After he finished the human test, if there was no problem, he could treat Xiao Xuexing's illness.

Throughout the story, Xiao Xuexing can feel Xiao Zirong's happiness, but his happiness is mixed with unhappiness.

Because Xiao Zirong didn't write anything about himself from the beginning to the end, and even asked him if he was doing well, he was polite and restrained.

It is true that face-to-face communication is different from writing letters, but you can still judge the attitude of the other party through the use of words.

Xiao Zirong's attitude is naturally fine, but there is also a big problem that is too polite.

This kind of politeness seems to have returned to the time when he first found the other party.

No, it should be said that it was as if they had returned to the time when they first met.

At that time, Xiao Zirong was polite and vigilant, but later when he found the other party, the other party shrank and flattered because of guilty conscience.

The current Xiao Zirong showed restraint and courtesy in the letter, if Xiao Xuexing was not familiar with him, he might appreciate such a person very much.

But now he just felt that there must be something wrong.

Combined with the fact that Xiao Zirong had always been a little evasive towards him before he left, even when he was packing his luggage, he couldn't see it very much, so something must have happened that he didn't know.

Could it be that someone is sowing discord?

Xiao Xuexing quickly denied this idea. It wasn't that he didn't believe those people, but that he and Xiao Zirong had been together for so long, and they understood each other very well, even if they didn't say that they were in the same heart. Divorce, then he has failed too much.

He believed in Xiao Zirong, so this guess was just shaken in his mind and then he was kicked out.

Then combined with Xiao Zirong's character, it must be that the other party has done or is about to do something, and he will definitely not agree to this matter, and Xiao Zirong himself is in a state of hesitation, and he is afraid that he will The truth was exposed in front of him, so he simply avoided seeing it, and waited until he made a decision.

The only thing he couldn't figure out was probably what made Xiao Zirong so difficult?

Xiao Xuexing thought of this and put away the letter paper, and said directly: "Ling Fu, tell everyone to pack up and prepare to go back to Taoyuan City."

Ling Fu didn't even ask why he was leaving so soon, but happily prepared to pack his things.

When he was in Taoyuan City before, he didn't think there was anything wrong. After returning to Jiankang, he found that he was still comfortable in Taoyuan City.

When they were in Taoyuan City, as long as their general didn't tell them what to do, except for the necessary training, they could go hunting and go to sea to do whatever they wanted.

After returning to Jiankang, he felt that his hands were tied, and he dared not go out easily. Once he went out and met acquaintances, he would be greeted with oblique inquiries.

Ling Fu is just careless and insensitive in some respects, but he will be especially careful when it comes to Xiao Xuexing and Xiao Zirong.

This kind of life is simply unbearable, he is really looking forward to the stars and the moon, hoping that his general will leave quickly.

If Xiao Xuexing wanted to leave, he would definitely report to Xiao Xuan. Xiao Xuan announced him into the palace and asked, "Why are you leaving so soon?"

Xiao Xuexing was very calm: "Don't worry about Rong'er."

This is not an excuse, he can't guess what Xiao Zirong is so embarrassing for him, since he can't guess it, then go and have a face-to-face talk, guessing and guessing, maybe he will guess the wrong direction, in case he is told Any rift between Xiao Zirong will not heal.

It's not his habit to keep everything in his heart and allow misunderstandings to arise. What do people do with their mouths?Isn't it just talking?If you have something to say, you can't say that you are thinking wildly, it is simply sick.

It's just that when Xiao Xuexing arrived in Taoyuan City, he found that the person he wanted to talk to had disappeared.