Now the gold tower is just a third of the way up, and even with improvised lifting equipment, explosives, steel tools, wheels, and livestock, it would be a huge undertaking to mine large stones from a few kilometers away and then trim them and pull them back to build them, and it will take up thousands of young people. No wonder Swann couldn't get used to it, he thought that building such a pyramid would be done with a cloudy man, and it was useless to build such a large and high pyramid, and it would be better to produce more guns and ammunition with so many men, or train him to be soldiers.

At this time, there is a much smaller construction site on the south bank of the lake, some are digging foundations, some have already been built, along the relatively high terrain of the lake shore, the drainage of Lili Lala has to be 1 kilometer long, and the distance between houses is at least 200 meters. Hong Tao didn't need to ask, he smelled the sour smell and looked for it. Not to mention, there is not much difference between the chemical factory and the vinegar brewing workshop in this era, there is no high-precision equipment in sight, except for the fractionation tank that looks like a bit of an industrial product, the others are all large and small tanks, and there is a pungent smell everywhere.

"You're taking in a new apprentice?" Covering his nose and burrowing into a courtyard where he stood at the door of the guards, Bush was giving a lecture to a group of people, and judging by the expressions on their faces, they should all be newcomers.

"Come here today, and don't put the primer in the sun in the future, dry in the shade, you must dry in the shade!" Hong Tao appeared in the chemical plant, in addition to inspecting production, there are tests to do. The former is rarely used, because Hong Tao is afraid of death, and he is reluctant to come to such a dangerous place if he can. If it was the latter, Bush's eyes immediately lit up and he immediately ended his lecture.

"What's the matter, you're in trouble with production?" Hong Tao casually picked up a leather apron and put it around his neck, which was a precursor to going to the laboratory to do the experiment in person.

"It's not a big deal, it's mainly a process problem. The previous stage of bullet consumption is relatively large, and some processes are not too strict. In addition, there are a lot of newcomers here, so I have to train slowly. Do you have something good to come to today? Bush is no longer the junior apprentice who followed Hong Tao and watched all kinds of chemical reactions dumbfounded, he now has dozens of big apprentices with a little talent around him, and there are even more disciples and grandchildren below. He built the entire chemical system of Sun City, and there are also innovative inventions such as silver nitrate. However, he is still very, very eager for the new things in Hong Tao's mind, because chemically synthesized items are often systematic, and they are made the same, changing the acid-base mode, and maybe they will come out again.

"It's not a big deal this time, but it's more significant, and after you get it, you'll become the savior of the world, a Buddha of all families! Any idea what these things are? Hong Tao threw the big bag he was carrying on the ground, and a few pieces of dried bark were scattered inside.

"Golden Rooster Bark, didn't you say that we outsiders have to prepare a piece for each of us, which is used to treat the disease. In the past few years, Swan has not come back from grabbing this thing, and there are some in the warehouse, and they have to be dried regularly, otherwise they will all grow hair. As a newcomer, Bush is no stranger to this bark, he has never eaten it, but he may have to use it someday.

"Well, what we have to do today is to separate the ingredients that can cure diseases from these barks, so that we don't have to chew the bark or drink bark water in the future. Hong Tao suddenly remembered the intravenous injection and intravenous drip equipment at this time, for so many years, he actually forgot about the injection, because his mother is still a doctor, which is too undeserved.

“…… I'd better eat the bark of the tree, and if I get into the veins, people can still live?! Bush looked at Hong Tao's vicious expression, and immediately felt that it was not a wonderful thing to prick blood vessels, and since they could cure diseases, it was safer to use the old method.

"Don't hope you get sick, I can come up with anything but not the disease. You'd better stay alive until I die, I don't want a white-haired person to send a black-haired person. Okay, let's get some dilute hydrochloric acid, the concentration...... From five percent to fifteen percent, one of the same. There is also ethanol and caustic soda solution, take some of them. You go and get ready, and I'll powder the bark. "For the problem of disease, Hong Tao is really powerless, and he really doesn't want to see people around him who are killed by disease, but he knows very little about this technology, so he can only do his best to obey the fate of God.

How long does it take to soak the ground cinchona bark powder in ethanol to dissolve the maximum amount of alkaloids in the bark? Hong Tao didn't know.

The obtained solution is heated to how high the reflux concentration is, and Hong Tao is not clear.

After the concentrate is concentrated to what extent, what proportion of acid is added to acidify, Hong Tao can't say.

To what extent is acidification, and then add caustic soda solution to alkalize, Hong Tao's eyes are still black.

Even whether the alkaloids with relatively high purity in the end were crystals or liquids, he didn't have a spectrum in his heart.

The only thing that is probably clear is to follow the process of extracting ancient caobase, anyway, both things are on the tree, a leaf and a bark, and they are both free alkaloids, and the means required should be about the same......

After more than a day of working in the laboratory with Bush, Hong Tao got a few grams of slightly brown powder, which looked a bit like impure table salt. Pinched a little bit and tasted it, it was a little bitter, it didn't taste anything, whether it was quinine or not, the ghost knew.

"Is this the thing?" Bush felt that the purification process was a bit too simplistic and was a little skeptical about the credibility of the powder. According to his habitual thinking, if he doesn't fail dozens of times, it's not called chemistry.

"I don't know...... Try it, whether it will work or not, you can't watch ads, you have to see the efficacy! There's still a little bark left, and you go ahead and experiment to try to fix the process as much as possible, and the purity is as pure as possible. "There is only one way to prove whether these powders are quinine or not, and that is to conduct clinical trials, with live human experiments!

Indians are not naturally immune to malaria, and it is not difficult to find a few sick people out of tens of thousands of people. Hong Tao filled the powder with a vial and left Bush's laboratory, there happened to be a doctor who had been deceived by William, and let them carry this black cauldron. If they are cured, they will be considered the work of the sun god, and if they are cured, they will be considered medically inadequate, and after Bush has created the next batch, they will try again.

In fact, Hong Tao thinks too much, chewing the bark can cure the disease, no matter whether the purification process is perfect or not, as long as you don't leave too much acid and alkali, these powders are much stronger than just using the bark. It's just that on the issue of dosage, these doctors have to sum up their experience, but fortunately, there are enough patients who can be used for clinical trials, and there are really no patients who use good people to try the side effects. Receiving the divine power of the sun god is a gift, and who would dare to say disagree?

"Hong, I think we can go back with your medicine, it works very well, no one died because of taking it, just some symptoms of vomiting and dizziness, but the disease is cured. The empire is in great need of this medicine, and it is the best gift Allah has given us...... It's just that there are too few of them, and if there are more, I can cure everyone!. "The leader of these thirty European doctors was an old Greek man, who, like Said, was a scholar invited by Friedrich II from various countries, and his specialty was medicine. After getting the purified quinine, he took other doctors to conduct clinical trials in a makeshift tent by the lake for less than half a month, and then he was busy running to Hong Tao to report the results, wanting more medicine to return to the empire.

"You can't go back yet, this is where you'll be working for the next few years. Not only does your Lord need a doctor to heal His believers, but My God needs it, and it is more urgent. "Go back? Grandmother! Hong Tao didn't want these doctors to go back at all, and it won't be possible in a few years. Friedrich II, the fucking emperor, he didn't want to carry this black cauldron, and deceived these people that they were here to investigate the effect of the medicine, and he could only help him with thunder.

"But our family ......" The old man instantly understood his situation, his eyes widened, and he wanted to argue with Hong Tao.

"After a while, Count Karl will send your family over, and this will be your new home. Don't look at it as if it doesn't have the prosperity of the Empire, it's temporary, and in a few years, it'll become the same as Heat, Milan, and Naples. And here you don't have to worry about the church's fingers, you can study your knowledge without any scruples, even if you need a living person to do the experiment, I can provide a lot of it. I have more new medicines to offer you in the future, and it won't be long before your counterparts in Naples will be your apprentices. I have built you the largest hospital in the world in that palace, where you and your companions can continue your studies while you and your companions become doctors. Think about it, anyway, you can't go back to the Mediterranean in the past few years. Hong Tao simply explained his plan, there are threats, temptations, prospects, and realities, and none of them are beneficial to these doctors anyway.

"You're kidnapping!" The old man in Greece protested, but neither in tone nor in terms of momentum, could not be called severe.

"Maybe I'll kidnap more scholars and build the world's largest university here. The kidnappers run a university, and the meat ticket becomes a professor, hey, hey, it sounds very interesting. Okay, you can be a meat ticket with peace of mind, I will try to be a kidnapper, and with our joint efforts, this university will not be far away. By the way, I remind you of one thing, don't try to talk to my people about something inappropriate, if the priests find out, whoever it is, they will be burned to death, and I will not intervene in the case. As long as you don't touch this red line, you can talk to me about all your requirements, and I will meet what I can meet, and I will find a way to meet what I can't. The words of the old Greek man reminded Hong Tao that those scholars don't need to rack their brains to persuade them at all, just catch them all, and arrest them with their families, even if they are passive and slack off after they come, they can afford to support these people, and if one of them gives in, they will earn it.

In the face of Hong Tao's big head, which has neither grace nor cheek, the doctors have no way at all, and in the more than a month they have been in Tula City, they have understood a little bit of things themselves.

First of all, there is no law here, what Hong Tao said, that is, what God said, it is more effective than the law, and if he annoys him, it is light to be burned to death. The second is that the conditions here are relatively backward, but the development is very fast, and there are many things that they have never seen. Finally, it is indeed heaven for them from an academic point of view, and without the restrictions of the church, they will not be forbidden to do any medical research, let alone hide. As long as they wear a white robe with a red cross on it, everyone will make it easy for them.

Stay alive and live well to continue your research. If you don't stay, you won't be able to go anywhere, and you'll have to be burned to death. None of the thirty doctors who were deceived by Hong Tao chose the latter, whether they were willing or not, they all obediently went to be barefoot doctors anyway, divided into several groups, went out to find patients, and continued to experiment with this miraculous powder. Hong Tao promised them that if the experiment here was successful, he would send it back to the Holy Roman Empire, and that he could save thousands of people, perhaps their own relatives. (To be continued.) )