After eating and drinking, Chen Xiao invited Dong Xianxian to drink tea and chat about life. Pen % fun % Pavilion www.biquge.info

Dong Xianxian did not refuse this time, she still had a lot of things to ask Chen Xiao. For example, the "Compendium of Materia Medica", such as the specific plan for giving medicine to doctors tomorrow.

"What do you think are herbs and herbs? How many kinds of herbs are known now?How many prescriptions are there?" Chen Xiao pretended to look at Dong Xianxian profoundly, Dong Xianxian who did not have a silk scarf and a beautiful face, it was a pleasure to look at it.

This woman obviously has a peerless appearance, but she has to rely on strength, and there is no one.

Dong Xianxian showed a serious thinking look, and said slowly: "Herbs are plants with medicinal value. At present, there are only 760 kinds of herbs in the most complete record. As for prescriptions, because each prescription is related to the interests of the pharmacist, it is not a secret. There are very few prescriptions in circulation, and as far as I know, there are only about a thousand. ”

Chen Xiao learned about the level of medicine in this era from Dong Xianxian, and his mood was a little heavy.

In this world, the level of medicine in this era is undoubtedly still at a very low level, and if any epidemic suddenly occurs, it will cause a devastating blow to mankind.

For example, more than 130 years ago, in various parts of the mainland, there was a kind of black death that had never been seen before, and people who suffered from this black death disease had dark spots on their skin, which gradually festered and drained pus, and they were tortured to death.

The lethality rate is one hundred percent.

Even healing mages are helpless. Physicians and pharmacists who are still in the embryonic stage are even more powerless.

At that time, all countries issued death orders, and in order to control the epidemic, they almost implemented the policy of slaughtering villages and cities.

A lot of people died at that time.

For another example, sixty years ago, the Winter Empire in the north suddenly broke out of a kind of scarlet fever, the infected people had red and hot skin all over their bodies, and red blisters appeared all over their bodies, although the fatality rate was not high, but in that epidemic, tens of thousands of people also died, which was very terrifying.

Chen Xiao stopped Dong Xianxian and continued to talk about horror movies, he picked the wick on the alcohol lamp to make the flame burn more vigorously.

This woman looks delicate, beautiful and captivating, how to talk about these horror stories, her face does not change, and she talks endlessly, and her voice is full of emotion.

Chen Xiao pulled his cheek and smiled: "Let's continue to talk about business." It's all far away. ”

He sounded a little scared. After all, in this day and age, there is no effective treatment for these contagious diseases.

Dong Xianxian couldn't help but smile when Chen Xiao looked so timid and scared.

"So, Mr. Chen. You say. I'm listening. Dong Xianxian tidied up her skirt and sat down.

"This ......" Chen Xiao suddenly felt a little big. He doesn't know much about medical skills, and he can't say much about what he really has, but he doesn't want to listen to Dong Xianxian tell horror stories.

Chen Xiao closed his eyes and took a deep breath to clear his mind.

When he was in college, he majored in chemical engineering, and he also dabbled in chemical drugs, and there was also a copy of the "Compendium of Materia Medica", which was a new edition.

He read it for a while and then abandoned it. Because he is not studying Chinese medicine, even if he is familiar with the "Compendium of Materia Medica", it is of no use to him.

"The Compendium of Materia Medica is a strange book, it records nearly 2,000 kinds of medicines, and more than 10,000 prescriptions. It expounds the sexual taste, indications, medication rules, origin and form, collection methods and processing methods, pharmaceutical compatibility and so on. ”

Chen Xiao slowly recalled that he had no concept of the specific 2,000 medicines and prescriptions, but this did not prevent him from pretending to be forced and bluffing Dong Xianxian.

Hearing this, Dong Xianxian couldn't help but open his lips slightly, and his face was surprised.

Nearly 2,000 drugs?

More than 10,000 prescriptions?

What kind of strange book is this! Dong Xianxian's face became serious, she didn't want to miss a word.

Dong Xianxian, whose body was slightly inclined to Chen Xiao, waited for Chen Xiao to continue.

......

......

"Why don't you say it?" Chen Xiao was silent for a while before Dong Xianxian asked.

Chen Xiao smiled, and said in his heart, I don't know what to say if I want to say, what do you want me to say?

was stared at by Dong Xianxian, and Chen Xiao was embarrassed. You can't just stop eating here, pretend to be forced and be slapped in the face.

He coughed and pretended to be profound: "It's late at night, why don't we go back and wash and sleep?" As he spoke, he yawned exaggeratedly, looking tired.

The corners of Dong Xianxian's mouth twitched, his eyes rolled straight, and he felt speechless about Chen Xiao's scoundrel character.

However, since Chen Xiao didn't want to continue, Dong Xianxian had no choice, she was too tired in the past two days, and considering that she would have to give medicine tomorrow, she had to say goodbye and go back to her room to rest.

After Chen Xiao saw Dong Xianxian leave, he couldn't help but breathe a sigh of relief. This chick was stubborn, and the nine cows couldn't pull it, and she was so imposing just now that she wanted to eat him.

Frightened, Chen Xiao's liver fluttered.

There is no exciting nightlife in this different world, and outside the enchantment of the village, there are terrifying nocturnal monsters wandering, and when night comes, ordinary people go to bed early.

After being in a coma all day, coupled with the cultivation of the "Meditation Method", Chen Xiao felt energetic at this time, and the previous yawning and exhaustion were all faked.

He left the castle with the lantern in his hand and walked towards the laboratory.

He didn't know that Dong Xianxian was standing by the window, looking at Chen Xiao quietly.

After entering the laboratory, Chen Xiao closed the door. He had to finish extracting the acid as soon as possible.

Sulfuric acid and hydrochloric acid, a jar has been made.

Nitric acid, because of the limited conditions, can not be prepared by ammonia oxidation, can only be prepared with concentrated sulfuric acid and nitrate, by heating the two, a reaction is produced to produce nitrogen dioxide.

The yellowish gas rises from the flask and is piped into a jar containing clean water. Nitrogen dioxide is dissolved in water to form nitric acid, which is then concentrated and extracted.

After producing nitric acid, Chen Xiao began the next experiment.

He tried mixing concentrated hydrochloric acid with concentrated nitric acid in a 3:1 ratio by volume. The light-colored liquid gradually deepened and turned into a dark yellow with green smoke under stirring.

Aqua regia has very strong oxidizing and corrosive properties, and has almost universal solubility to metals, and can dissolve gold that ordinary acids cannot dissolve.

Chen Xiao threw a piece of gold coin into the water of king, only to see that the gold coin dissolved at a speed visible to the naked eye, and finally disappeared completely.

Seeing that the effect was okay, Chen Xiao couldn't help grinning.

In this era, gold smelting relies on gold ore and high-temperature calcination, and the temperature reaches more than 1,000 degrees, which is very demanding.

If there is aqua regia, it is much easier to smelt gold.

He remembered a movie he had watched, using the property of aqua regia to dissolve gold, to make a gold robbery, and he didn't know it. He couldn't help but think that if he came to a gold robbery, he didn't know if he could succeed.

After the planned experiment was completed, Chen Xiao recorded the experiment in detail, then closed the door of the laboratory and came to the roof of the bell tower.