Hearing that Guo Bin was worried about how to drive away mosquitoes, his subordinates were stunned.

Guo Bin didn't know why, and said, "Oh? But what's the problem? ”

Sima Huiqi said: "The so-called Qingming willow insertion, Dragon Boat Festival wormwood, the Dragon Boat Festival has its own custom of inserting wormwood, how to drive away mosquitoes?" ”

Guo Bin was confused: "Oh? Could it be that wormwood can be planted to repel mosquitoes? ”

Every year on the fifth day of the fifth lunar month is the Dragon Boat Festival, which is the beginning of the summer vacation of the year, and mosquitoes are extremely rampant. The Dragon Boat Festival originated from the Yulan Festival, the ancients picked orchid grass in May, and the custom of bathing and removing poison with orchid soup prevailed. Before the Spring and Autumn Period, the Dragon Boat Festival is a festival of disease and epidemic prevention, on this day, every family is sprinkled with sweeping the court, with calamus, moxa sticks inserted in the door eyebrows, hanging in the hall, used to dispel evil spirits. It can be seen that the so-called Dragon Boat Festival is also a health festival that has been passed down since ancient times.

Before Guo Bin was reborn, a few wormwood plants were hung on the lintel of the house every Dragon Boat Festival, not only that, but a few plants should be placed in the corner of the courtyard door and behind the house door, even under the bed. At first, he was also very curious about why he put wormwood, and the older generation only said that it was to ward off evil spirits. Cleaning and cleaning the living environment can naturally avoid the breeding of bacteria and viruses and keep away all diseases. In the eyes of the ancients, this is not to ward off evil spirits.

At the moment, I only heard Sima Hui say: "The lord is a scholar of heaven and man, but he doesn't know anything about this little folk custom." The pure yang nature of wormwood leads to the twelve meridians. It has the effects of restoring yang, regulating qi and blood, chasing dampness and cold, stopping bleeding and stabilizing the fetus, and is also commonly used in acupuncture. The peculiar aroma produced by it can repel mosquitoes, flies, insects and ants. Therefore, it is only necessary to advocate the custom of the Dragon Boat Festival, and order households, yamen, inns, restaurants, etc. to widely spread wormwood to drive away mosquitoes. ”

Guo Bin is overjoyed, as long as this method of avoiding mosquitoes is settled, then the rest is easy to say. The feces of people and animals, as long as they are treated centrally, and the water source needs to be boiled before drinking, these habits, which were originally very smooth in Yangzhai County, will not be too difficult to implement.

Because since Guo Bin was appointed as the commander of Yangzhai County, he has vigorously promoted public toilets, and now in Yangzhai County, there is one every 100 steps or so in the old city. And everyone is rushing to do this toilet job, why? This is all good stuff for fertilizing the ground! The so-called "there is no smell of dung, where does the grain smell." ”

Of course, this public toilet is only for the convenience of people to go to the toilet when they leave home, and ordinary people will naturally have their own toilets at home, and the so-called fertilizer water does not flow into the fields of outsiders! In addition, in Xicheng District, Yangzhai County, the newly built areas have their own biogas digesters, and the raw materials required for the biogas digesters are human and livestock manure, so in Xicheng District, the courtyards of every household are cleaned and clean, and even animal manure will be put away and put into the biogas digesters. This Xicheng District, which no longer has the dirty scene of dung soup flowing in the past, will surely win the first place in one fell swoop if it is evaluated as a sanitary city.

Due to the great success of the construction and use of biogas digesters in Xicheng District, the whole Yangzhai County has set off a high tide of building biogas digesters, that is, people living in the cramped environment in the old city have to build their own biogas digesters with the support of the government. This is because the biogas produced in the digester can be used for cooking and lighting, and its raw material is just manure, which everyone "produces". Moreover, after the manure is fermented in the biogas digester, it is used to fertilize the field.

Because of the extremely high brightness of biogas combustion, many well-informed wealthy families in Yingchuan County also specifically asked Guo Bin to support the construction of biogas digesters in the area.

Although the fermented manure soup in the biogas digester does work wonders when fertilizing the fields, where do these wealthy families care? All they care about is being able to have very bright lights even at night. The light in the dark night is a treasure that supports students' night reading, and it is also one of the sources of human security. Therefore, with the invention of the biogas lamp, the night scene of Yangzhai began to have a little appearance of later generations. Of course, because glass had not been invented at this time, Guo Bin did not have the time to make that thing, so the lampshade of the biogas lamp has been using extremely light and thin Lu Jin.

Later, a scholar wrote about the scene of biogas lamps all over the night in Yangzhai County, the so-called "brilliant like stars, bright like the bright moon." ”

What is "pointing at the stars", what is depicted is the dotted biogas lights in Yangzhai County.

However, Guo Bin's next words shocked everyone at the meeting.

"Now that there is a way to prevent mosquitoes, let's study how to treat malaria caused by miasma."

Xun Yu exclaimed: "Lord, this miasma is a poisonous gas that has existed in ancient times in the dense forests in the south, and we are not famous Qihuang families, where is there a way to treat miasma?" ”

Although Xun Yu has been with Guo Bin for a long time, the contact time is limited after all, and Xi Zhicai or Guo Jia will never ask such a thing. Because they know Guo Bin too well, looking at his thief's embarrassed smile now, although they don't know where to solve the problem, the two of them know that Guo Bin must be confident. Whenever this happens, they will always say nothing, and even talk about him left and right, so they have to force Guo Bin to hold back and say it himself.

Sure enough, I saw Guo Bin smile mysteriously and said, "I know the special medicine!" ”

Hearing Guo Bin's words, the two of them, Xi Zhicai and Guo Jia, who knew it in their hearts, were also so shocked that they stood up from their seats. Sima Hui was even more excited, and his hands were full of ink, and he even trembled with excitement. It was Dong Xing'er, who was so shocked that she exhaled. Only Zhang Fei was still stealing the hero's blood in the cup as if nothing had happened, and seeing that everyone reacted so much, he hurriedly hid the wine lord in his sleeve.

Guo Bin naturally understood why they were so surprised, because miasma has always been an important factor that has plagued the development of the south. Whether it is the northerners moving south, or the large army going south to fight, the local miasma has always been a great trouble. In many cases, there have even been numerous examples of soldiers being lost due to miasma.

In the early days of ancient times, people directly wrote malaria as "abuse", and the "Book of Rites and the Moon Order" called "Minduo Malaria". Liu Xi, a native of the Eastern Han Dynasty, in his interpretation of "malaria" in "Interpretation of Names and Diseases", called this disease "cruel abuse": "All diseases are cold or hot ears, and this disease is cold first and then hot, like a cruel abuser." Therefore, malaria is a terrible disease that everyone hears of, and if Guo Bin can find a special medicine, it will really be a Buddha of all families (although Buddhism at this time is not popular in the Central Plains).

In the face of these heroes in the late Eastern Han Dynasty, Guo Bin's hands are the most commendable, and his biggest reliance, is the many extra memories in his head and two thousand years of vision. Under the communication technology with the extremely developed Internet technology in later generations, people can obtain a huge and terrifying amount of knowledge, and news is naturally one of them.

Guo Bin naturally knows the treatment of malaria. He has loved him since he was a child, and he knows that Cao Xueqin's grandfather Cao Yin died of malaria. Cao Yin, as a favored minister of Emperor Kangxi at that time, was given the special medicine Cinchona Cream, a special medicine for malaria, but died before the medicine arrived.

However, although Guo Bin knows that the special drug for the treatment of malaria is called cinchona cream, as for how this "golden rooster" is "admitted" to the "cream", Guo Bin does not know anything. In fact, the official name of cinchona is "quinine", which is the main alkaloid in the bark of the Rubiaceae plant cinchona tree and its contemporaries, but the origin of this cinchona tree is the distant South American Andes. With the current navigation technology, just this long distance is not something that the Central Plains people can reach in a short period of time.

However, this is when the advantages of the Internet are reflected. Although Guo Bin from later generations does not know how to learn, he still knows a little about many major news.

In later generations, in October 2015, Mr. Tu Youyou, the first Chinese scientist to win the Nobel Prize in Science and the first female scientist to win the Nobel Prize in Physiology or Medicine, became one of the hottest topics in China. And this scientist, who has saved the lives of millions of people in developing countries, has discovered a new treatment for malaria with artemisinin.

At that time, after Guo Bin saw the news, out of curiosity, he also deliberately checked it on the Internet. So he knew the key to a specific drug for malaria, an annual herb - Artemisia annua.

Although Artemisia annua is mainly produced in Youyang, Chongqing, it is widely distributed in China. Regarding its appearance, Li Shizhen also mentioned it in the "Compendium of Materia Medica": "Yanzi" cloud: Artemisia, the tall grass. According to the "Erya" Artemisia, it is only called Artemisia, how can the back of all Artemisia leaves be white, and this Artemisia is only green, different from Artemisia? ”

In other words, the so-called Artemisia is the grass that grows tall. According to the appearance of the various artemisia grasses recorded in the "Erya", the reason why Artemisia annua can be called "Artemisia annua" alone is not because the back of the leaves of all kinds of Artemisia grass is white, and only the back of the leaves of this Artemisia is blue-green? In other words, the so-called Artemisia in ancient times refers to Artemisia annua, which is called Artemisia annua alone because the back of the leaves is also green.

Although Guo Bin doesn't know how to extract artemisinin from Artemisia annua, if he eats all the leaves of Artemisia annua, wouldn't it be okay? As for how to adjust the dosage and how to take it, these can be slowly tested from less to more. Moreover, Guo Bin knew before he was reborn that there was a custom of eating Artemisia annua in many areas in the south, and if he wanted to eat Artemisia annua, it should be no harm to people's bodies. However, did the ancients realize the benefits of Artemisia annua in the treatment of malaria? Or maybe you accidentally find that people who eat Artemisia annua rarely get malaria? Otherwise, how could the custom of eating Artemisia annua be passed down? If it is said that it is because of hunger, I have never seen anyone eat sycamore leaves, right?

Whether Artemisia annua, a very common grass, can really treat malaria, a very bad and deadly disease, no one is sure until the actual experiment. However, no one questioned the method of mosquito prevention in Yingchuan County, after all, the entire plan cost very little money, and in line with the attitude of preferring to believe what it has rather than believe it in, with the current financial resources of Yingchuan County, it is really not even a dime.

Therefore, after the meeting, the entire Yingchuan County was promoted by Guo Bin to run rapidly, and the core team of the Yingchuan County Government headed by Guo Bin ushered in the first crisis after its establishment, and its enemy was malaria, an invisible and untouchable protozoa.