Yan Yan found the imperial doctor five days later to confirm that she was pregnant, and at that time, Lu You also entered Taixue, and he also went out early and returned late every day, because he still had to work in the Ministry of Industry.

The kite that can drive people has not yet been made, but it can accurately fall into the city wall and then fall, resulting in the burning of the house, the Kong Ming lantern has been studied, and it is reported that Li Cong has ordered people to be sent to the front line overnight.

It's a pity that the research on artillery has not made much progress, mainly because the distance and height are not enough, and it is said that the strength of the mechanism to control the launch is not enough, which is not something that Yan Yan can help.

The main thing is that she doesn't know how the cannon works, and she has only seen the shape of the cannon on TV or in movies.

But Li Cong doesn't know this, and he still has high hopes for Yan Yan.

Especially after learning that Lu Duan burned the grain and grass of the Khitan with Kong Ming lanterns, he wanted to force the Khitan back in one go, and it was best to get back the lost Yanyun Sixteen Prefectures, and it was not in vain that he spent so much effort.

But who knew that just when he was full of ambition, a sudden malaria suddenly swept through the entire harem and even most places in the capital.

When Yan Yan learned the news, seven or eight people had died in the entire capital, and at that time, she was holding Lu Jin to teach her to play flying chess, when the nurse suddenly came in in a hurry, "Miss, it seems that something big is happening outside." ”

Yan Yan was also startled when she saw her so flustered, "What's the matter?" ”

"It seems that there are dead people in the capital, saying what kind of malaria it is, and seven or eight people have died, which will be very panicked." The nurse suddenly thought of something, took a few steps back, and stood outside the door, for she had just returned from the street.

Yan Yan was also shocked when she heard the word malaria, she knew that the medical conditions in ancient times were poor, and malaria, like smallpox, was a disease with a high mortality rate and a very strong contagion.

It's just good, how could malaria suddenly spread in the capital, isn't it more likely that this disease should have occurred from the countryside?

And these days I haven't heard of malaria nearby, not only near the capital, but even Da Zhou doesn't seem to have it, because she hasn't heard Li Cong say that under normal circumstances, this kind of catastrophe must be reported to the imperial court.

Thinking of this, Yan Yan wanted to go to the palace to have a look.

In recent days, because of the morning sickness reaction, she hardly goes out, and she doesn't even move around the palace.

And Lu You saw her like this, she didn't go to the Ministry of Industry much in the past few days, and went home directly after coming back from Taixue, so he didn't know much about the outside world.

According to the nurse, at first, everyone didn't care, thinking that the patient was ordinary typhoid fever, until the symptoms of swinging appeared, and a doctor thought that it might be malaria, and by the time the diagnosis was made, seven or eight people had died, and there were more than a dozen similar patients, and then it came out.

"Who are the dead?" Yan Yan asked.

"It's mostly children. There are adults, too. Master, if the people in the family can not go out, try not to go out, even if they go out, don't go to a crowded place, I will send someone to buy a little more salt, the things in our own garden are basically enough for daily life, it is really not good, these days would rather be some. After the nurse finished speaking, she hurriedly turned around and went out.

It was Yan Yan who began to ponder carefully after the nurse left, the medical conditions in ancient times were poor, and he was really going to be infected, most of which was resigned to fate.

Malaria, the antimalarial drug she knows is cinchona cream during the Kangxi period of the Qing Dynasty, which is still hundreds of years away from now, and it was invented by foreigners.

No, Yan Yan suddenly remembered one thing, she once read a report about Grandma Tu, which seemed to mention artemisinin, saying that the ancients had a precedent of using Artemisia annua to treat malaria, but this kind of Artemisia annua is not decocted like ordinary Chinese medicine, but directly wrung out the juice and gave it to the patient.

Thinking of this, Yan Yan hurriedly entered the study, she wondered if she could find a similar basis from the book, because malaria was so rampant in ancient times, maybe this ancient recipe had already been discovered?

Not to mention, hard work pays off, Yan Yan found a description of malaria in the book "The Yellow Emperor's Neijing", but unfortunately there was no mention of Artemisia annua.

The "Shennong's Classic of Materia Medica" in the Eastern Han Dynasty mentioned Artemisia annua, which was not used to treat malaria, but for the treatment of scabies, scabs, itching and sores or something.

Yan Yan didn't know how to find other medical books for a while, so she had to call Qinghe Qingyu and help her find all the medical books at home.

When a few people were busy, someone rumored that the princess came to the door, and Yan Yan hurriedly threw down the work in his hand and went out.

It turned out that it was not the crown princess who came to the door, it was Li Xi and Li Ran's nurse and the discipline mother who came with Li Xi and Li Ran.

As soon as they met, Mama didn't care about greetings or anything, and directly pushed Li Xi and Li Ran forward, "Lord Qiqi Baihui, these two children and princesses will ask the county lord to take care of them for a while, don't let the two of them go out, for fear of contracting malaria outside." ”

Yan Yan tightened when he heard this, "Two grandmothers, is there something wrong with the crown prince and the crown princess, and what's wrong in the palace?" ”

Don't blame Yan Yan for being afraid, you know, how can there be a safer place in the entire capital than the palace?

"Aunt Yan'er, what can you do to save my father?" When Li Xi saw Yan Yan asking, he cried.

As soon as Li Xi cried, Li Ran also cried, and the two nurses and the housekeeper also cried, Yan Yan understood one thing from the crying of these people, many masters in the palace were infected with malaria, even the queen mother, the queen and the emperor, and the prince were no exception, and the first to have this symptom was Li Sui, as for where Li Sui was infected, he himself couldn't say clearly, in short, within two days, many people in the palace had mild or severe symptoms, at first, the imperial doctor didn't expect it to be malaria, and thought it was typhoid fever.

After all, it has not yet spread outside, how could this disease start from the palace?

In the end, it was only after someone showed symptoms of swinging and began to die that the imperial doctor became vigilant, and only then did he begin to treat and save people with malaria, Rao was so, and two palace maids and a eunuch had already died in the palace. Li Sui is also in danger.

Yan Yan was startled when he heard that even the Queen Mother and the Emperor and others had symptoms, and he couldn't care about anything else, so he hurriedly said: "Two grandmothers, I seem to remember reading a passage in a medical book, saying that it is faster to use Artemisia annua to treat malaria, that is, to wring out the juice of Artemisia annua and give it to the patient directly, you might as well go back and try it for everyone, and I will find out if there is any other prescription myself." ”

She had a vague impression that the ancients still had a lot of experience in treating malaria, and the methods were also strange, and this Artemisia annua seemed to have appeared, but she couldn't remember which book it was.

As soon as Li Xi's grandmother heard that Yan Yan finished reporting the prescription, she hurriedly left.