Now the Golden Tower has just risen one-third of the time. Even with simple lifting equipment, steel tools, wheels and livestock, it is a huge project to mine large stones from a few kilometers away and then trim them and pull them back up. It has occupied thousands of young and strong people. No wonder Swan couldn't stand it. He thought that if he had a misty person to build such a pyramid, it would be useless to build such a large or high. It would be better to produce more cannons or train them to him with so many people.

At this time, there was a much smaller construction site on the south bank of the lake. Some were digging the foundation, and some had been covered. Along the relatively high terrain of the lake, it was discharged one kilometer long, and the distance between the houses was at least 200 meters. Hong Tao didn't need to inquire, and he looked for it when he smelled the sour smell. It's true that there was no big difference between chemical factories in this era and vinegar-making workshops, and there was no high-quality and sophisticated equipment. Except for the distillation tanks, it looked a bit industrialized, and the others were all large tanks and small tanks, with pungent smell everywhere.

"Are you taking up a new apprentice?" He covered his nose and crawled into a door standing in the guard's yard. Bush was giving lectures to a group of people. Judging from the expressions on their faces, they should be all new people.

"I'll be here today. In the future, no longer can be exposed to the sun. If you dry it in the sun, you must dry it in the clouds!" Hong Tao appeared in the chemical factory. In addition to checking production, there were experiments to do. The former was rarely the case because Hong Tao was afraid of death and would not be willing to come to such a dangerous place. If it were the latter, Bush's eyes immediately lit up and he immediately ended his speech.

"What's wrong? Are you in trouble with production?" Hong Tao picked up a leather apron and put it on his neck. This is a sign of going to the laboratory for experiments in person.

"No big deal, it's mainly a problem with the process. The consumption in the previous period is relatively large, and some processes are not strict. In addition, there are more new people here, so I have to train slowly. Are there any good things you have here today?" Bush is no longer the elementary apprentice who was stunned by various chemical reactions after Hong Tao. Now he has dozens of talented apprentices around him, and there are more disciples below. The entire chemical system of Sun City was built by him, and there are also innovative inventions such as silver nitrate. However, he is still very eager for the new things in Hong Tao's mind, because chemical objects are often systematic, and they are made into the same system, changing the acid-base mode, and maybe they will come out again.

"There is nothing big this time, but it is of great significance. After it is made, you will become the world's great savior, the Buddha of the Wan Family! Do you know what these are?" Hong Tao threw the big bag in his hand on the ground, and a few pieces of dry tree bark scattered out of it.

"Golden Rooster Bark, don't you say that we outsiders each have to prepare a piece for curing erectile dysfunction. In recent years, Swan has been robbing this thing many times. There are some in the warehouse and they have to be dried regularly, otherwise they will all grow hair." As a new immigrant, Bush is familiar with this kind of bark. He has never eaten it, but he may have to use it one day.

"Well, what we have to do today is to separate the ingredients that can cure the disease from these barks. In the future, we don't have to chew the bark and drink the bark water. Whoever gets sick, eats useful ingredients or simply pierces it into the blood vessels, and the disease is cured. It's simple?" Hong Tao suddenly remembered intravenous injections and drip devices. After so many years, he actually forgot to get the injection. It's a shame that his mother is still a doctor.

"...I still eat tree bark. Can people survive if they pierce into their blood vessels?!" Bush looked at Hong Tao's vicious expression and immediately felt that piercing blood vessels was not a wonderful thing. Since it can be cured, it is safer to use the old method.

"Don't expect to get sick. I can come up with any solution, but I can't deal with the disease. Before I die, you'd better be alive. I don't want the white-haired person to send the black-haired person. Well, get some dilute hydrochloric acid, the concentration... from 5% to 15%, the same kind. There are ethanol and hot alkali solutions. Take some. You can prepare first, and I'll make these barks into powder." Hong Tao is really powerless about the problem of disease, and he really doesn't want to see someone around him taking his life away by disease, but he knows very little about this technology, so he can only do his best to leave his destiny.

How long does the ground cinchona bark powder need to be soaked in ethanol to dissolve the alkaloids in the bark at the maximum amount? Hong Tao doesn’t know.

Hong Tao didn't know how high the solution was heated to reflux and concentrated.

Hong Tao couldn't say what extent the concentrate was concentrated and what proportion of acid solution was added to acidify.

Hong Tao still had a dark look when he added the alkali solution to alkaline.

Even if the final purity alkaloid is crystal or liquid, he has no idea whether it is crystals or liquids.

The only thing I understand is to follow the process of extracting cocaine. Anyway, both things are from trees, one tree leaves and one tree bark, and they are all free alkaloids. The methods required should be similar...

After working in the laboratory for more than a day, Hong Tao got a few grams of slightly brown powder, which looked a bit like a not-so-pure salt. He pinched it a little and tasted a little, and it was a little bitter and had no taste. Only a nerd knows whether it was quinine.

"Is this thing?" Bush felt that the purification process was a bit too simple and he doubted the credibility of this powder. According to his usual thinking, if he fails dozens of times, it is not called chemistry.

"I don't know... I'm not sure... I can't see whether it's successful or not. I can't read the advertisement, it depends on the efficacy! There is still some bark left, so you continue to do the experiment and try to fix the process as much as possible. The higher the purity, the better." There is only one way to prove whether these powders are quinine, which is to use a living test!

Indians were not born immune to malaria, so it was not difficult to find a few patients from tens of thousands of people. Hong Tao put the powder on a small bottle and left Bush's laboratory. There was a doctor who tricked him from William, so they took the blame. The cure was considered the Sun God's credit, and the cure was considered to be their poor medical skills. After Bush created the next batch, he continued to try.

In fact, Hong Tao thought too much, chewing the bark can cure diseases. No matter whether the purification process is perfect, as long as you don’t leave too much acid and alkali residue, these powders are much better than using the bark just. But in terms of dosage, these doctors have to summarize their experience. Fortunately, there are enough patients that can be used for trials, and there are really no patients who can try the side effects with good people. Accepting the divine power of the Sun God is a gift, who dares to say that they don’t agree?

"Hong, I think we can go back with your medicine. It is very useful. No one died of taking it. He just had some symptoms of vomiting and dizziness, but the disease was cured. The Empire needs this medicine very much. It is the best gift given to us by Allah... but the number is too small. If there are more, I can cure everyone!" The leader of these thirty European doctors was an old Greek man. Like Said, he was also a scholar invited by Frederi II from various countries. Medical skills were his expertise. After obtaining the purified quinine, he took other doctors to test it in a temporary tent by the lake for less than half a month, and then hurried to Hong Tao to report the results, wanting more medicines to return to the empire.

"You can't go back, this is your workplace in the next few years. Not only will your Lord need a doctor to treat its believers, but my God also needs it, and it's even more urgent." Go back? Grandma! Hong Tao didn't want these doctors to go back at all, and it won't work in a few years. Frederick II, the fucking emperor, didn't want to take the blame, deceived these people and said that they were here to examine the efficacy of the medicine, so he could only help him with the thunder.

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

"After a while, Count Carl will send your family here, and this will be your new home in the future. Don't look at it without the prosperity of the empire, it is temporary. In a few years, it will become the same as Genoa, Milan, and Naples. And here you don't have to worry about the church pointing fingers and you can study your knowledge without any scruples. Even if you need a living person to do the experiment, I can still have a lot of it. I have more new medicines for you in the future. It won't take long for your colleagues in Naples to be your apprentices. I have established the largest hospital in the world for you in that palace. You and your companions can continue to study knowledge while working as doctors. Think carefully, you can't go back to the Mediterranean in the past few years." Hong Tao simply expressed his plans, which included threats, temptations, prospects, and reality. Anyway, nothing is beneficial to these doctors.

"You are kidnapping!" The Greek old man protested, but no matter how he said or how he was, he could not be called strict.

"Maybe, I might kidnap more scholars in the future and then run the largest university in the world here. The kidnappers run a university, and the meat tickets are professors, hehehehe, it sounds very interesting. Okay, you can be a meat ticket, I will work hard to be a kidnapper. With our joint efforts, this university is not far away. By the way, I would like to remind you that you must not try to talk to my people about any inappropriate topics. If the priests find it, no matter what it is.

Anyone will be burned to death, and I will not intervene when it falls. As long as you don’t touch this red line, you can tell me all your requirements. If I can satisfy you, I will be satisfied. If I cannot satisfy you, I will find a way." The old Greek man said to Hong Tao that those scholars don’t have to rack their brains to persuade themselves. They just catch them all, and they will catch them together. Even if they passively slacken their work after they come, they can support these people. If one of them surrenders, they will make a profit.

Faced with Hong Tao's big head who was neither graceful nor shameless, the doctors had no choice. In the more than a month since they arrived in Tula City, they had figured out something.

First of all, there is no law here. What Hong Tao said is that God said, it is more effective than the law. If he annoys him, it will be lighter to burn it. Secondly, the conditions here are relatively backward, but they develop very quickly, and there are many things they have never seen before. Finally, for them, this place is indeed a paradise from an academic perspective. Without the restrictions of the church, they will not be prohibited from doing any medical research, let alone avoid hiding. As long as they wear white robes with the red cross, everyone will be convenient for them.
Chapter completed!