Cao Cao was not good at craftsmanship. To be more precise, he knew very little about craftsmanship.

Cao Cao looked at the answers to the question "Jiang Zuo" with absent-minded attention. He scribbled through the previous parts, and his eyes fell on the last question. The last question of "Jiang Zuo" was, "In winter, how to fortify a city overnight"

.

Looking at this question again, Cao Cao still felt that this was nonsense. He thought to himself, he wanted to see how he could build a city overnight, with the help of ghosts and gods?

The answer to this question is that the method of building a city in one day can only be used in winter. In winter, dig the earth and sand to build the city, and then pour it with water. A cold wind passed by overnight, and the sand was as hard as iron. The crossbow was lost.

Doesn't hurt.

This is how to get up in the city overnight in winter.

Cao Cao suddenly realized, (That’s it!)

As mentioned, this method can only be used in winter. Unless it is the cold winter season, or when dripping water turns to ice, it is difficult to build a wall with sand and soil overnight.

Cao Cao thought carefully and realized that if this method is used, it cannot be used unless it is a very cold day or a sandy place.

Cao Cao's experience is correct. In winter, the ground is freezing and the soil is frozen and hard. Even if the temperature is slightly warm during the day, the soil is still difficult to dig. As for the sand, although the sand in winter is also frozen and hard, it is not difficult to dig.

.

The answer posted on the city wall is not detailed. In fact, the method of raising the city overnight can be used in places without sand. It is difficult to dig the soil in winter, so you can set up a fire to burn the ground, thaw the ground before digging, or you can

Wheat straw, firewood, etc. are piled together, then water is poured on them, and then thinly covered with mud. The firewood bundles are loose and cannot prevent arrows from missing. However, after pouring a large amount of water, ice crystals fill the gaps in the firewood, and the firewood bundles become loose.

Very strong, strong enough to defend against crossbow arrows.

Also, not only mud and sand can be frozen to build a city, ice and snow can also be used.

In the cold winter, snow may not be difficult to find. The snow is soft. If it is piled up in one place, it will still be soft. You can use the method of freezing snow to pile up a layer of snow, pour a layer of water over it, pile up another layer, and pour another layer over it.

There is a layer of water, so after a cold night, the snow will be frozen as hard as iron stone.

Last year, we tried it in Julu. The frozen snow formed by snow and water could block the full charge of the cavalry.

Also, if a cart is used as a mold and ice and snow are piled in the gaps between the carts to build a wall, the wall can be piled very high, twice as high as a randomly piled snow wall.

Although Cao Cao had mastered the method of building a city in winter, he had not mastered its essence.

There were nine subjects in the imperial examination, the last of which was medical skills.

Cao Cao also knew very little about this subject, so he and Yuan Shao went to examine the papers together.

In the last question of the volume on medical skills, the question is, [Methods to prevent epidemics].

During the exam that day, Cao Cao just felt that this was a question testing advanced medical skills. Looking at the questions again today, Cao Cao still felt that this was just a test of medical skills.

However, when Cao Cao stared at the answer, the answer once again exceeded Cao Cao's expectations.

【What is a plague? Some say it is evil, some say it is a disaster. Plagues are actually living creatures, which can be called pests.

Plagues are the source of plague.

Plague insects are extremely fine, finer than dust, invisible to the naked eye...]

[Best pests are light and can move with the wind as dust. The same is true for pests.

When people are infected with epidemic diseases, it is because the epidemic insects hide in the human body and multiply, just like ants hiding in the soil, giving birth to two, and two giving birth to three, so as to be endless.

At this time, this person is infected with the epidemic...]

[The body of a person who feels the plague is filled with plague bugs smaller than dust. Every time this person breathes in, the plague bugs are brought out.

If the rest of the people don't notice it and talk to it, if the rest of the people touch it with their breath, then the rest of the people will also feel the plague.】

[Then, one person spreads to two, the second spreads to four, one person spreads to one family, one family spreads to one village, one village spreads to one county, one county spreads disaster to one county, and county disaster spreads to the state, and then it becomes an uncontrollable situation]

[Plague bugs can be exhaled and inhaled by the human body, and can also stay in the atmosphere. Therefore, a person who is infected with the plague will sneeze upwind, and thousands of people downwind will become sick...]

…

Cao Cao didn't care at first, but as he looked down, he became more and more fascinated.

Soon, Cao Cao finished reading several hundred words of anti-epidemic methods. After reading, Cao Cao fell into deep thought.

For the first time, the plague, which everyone in the world had heard about with disgrace, was explained so clearly and clearly.

People in the world call plague evil spirits, natural disasters, and unknown things. Only Liu Bei and Liu Xuande said it was a living thing, like five-flowered birds, fish, and insects.

This is pure materialism and has no mystery at all, so it is extremely convincing. Not only that, there are many powerful arguments in the discussion to prove that pests are living creatures.

As mentioned, seedlings are strong in spring but wilted in winter, and plague occurs frequently in spring and summer but rarely in winter. This is consistent.

Furthermore, meat lasts for a long time in winter, but cannot be eaten every other day in summer. According to the discussion, it is because of the pests floating in the dense atmosphere that they fall on the meat and eat it, breed and multiply, so the meat becomes rotten. This logic is extremely consistent.

Furthermore, if meat is sealed and stored in a sealed altar, it can last for a long time. However, it is isolated from pests in the atmosphere. The logic is very harmonious, and this is the fact.

Meats can be pickled in salt, and fruits can be soaked in wine for a long time. This is similar to vegetation, which cannot live in a place where salt is sprinkled. This is similar again.

The substantial arguments, rigorous argumentation and self-consistent logic completely convinced Cao Cao. Cao Cao was completely convinced that the plague turned out to be a living creature.

As for the method of controlling the epidemic, the epidemic insects will stay in the air, breathe out from the human body, stay in objects, birds and animals, and even stay in water. Therefore, in order to eliminate the epidemic insects, we have to close the villages and households.

Methods for isolating the source include replacing cold water with boiling water to prevent contamination from water, spreading lime all over, burning sick corpses, making masks to filter out pests, and so on.

After Cao Cao obtained the anti-epidemic method, he immediately felt that even if a plague broke out immediately tomorrow, he would not be afraid.

When you see the outbreak of plague, run away quickly to stay away from the disaster area. If you are in the epidemic and cannot escape, you must cook everything you eat. This is because living things will die from heat, and the same is true for pests. There is no such thing in the world that does not die from heat.

If an insect drinks, it must drink boiled water, because there is no living thing that can survive boiling. Then cover your face with a mask, scatter ashes in the house, seal the door, and never come out lightly, and so on

, the plague can pass safely.

This chapter is not over yet, please click on the next page to continue reading! If there is a serious epidemic in the army, this is the way to rescue it.

Among the methods for controlling epidemics, there is a saying, "The key to controlling epidemics is not to cure, but to prevent", which was deeply rooted in Cao Cao's heart.

Those who are good at fighting have no great achievements. Instead of asking for good doctors and miracle medicines, it is better to stop the plague so that no one will be infected with it.

As it is said in the Dharma, the plague is like a tiger, and it is difficult to cure with medicine and stones. Even if medicine and stones can cure it, even if only a few medicinal materials are needed, the plague can affect more than one hundred thousand people. For such a huge number of people, even if one person uses only two taels of medicine, the cumulative effect will be

It is also an incredible amount. It is not the best idea to seek various medicines and stones to cure the epidemic.

After knowing the truth about the plague and obtaining the method to prevent it, Cao Cao's fear of the plague was greatly reduced.

At the end, Cao Cao suddenly thought that if he went out to the Western Regions and swept through all the countries, he could have the power of millions, but a plague would wipe out the entire army. The plague was a hanging sword that could wipe out the hegemony of the Western Regions in an instant. Fortunately, he had a way to prevent the epidemic, and the plague

It’s no longer an insurmountable problem.

To understand the limit of the land capacity of the Central Plains, we must open up the territory and expand the territory so that the land expansion can be faster than the population accumulation. If we go out to the west and sweep through all the countries and envelop millions of people to expand the territory of the ten thousand territories, an army of millions will be incompetent.

The barrier can be conquered, and the mountains and rivers are separated by engineering and technology. However, if the plague breaks out, millions of people will be reduced to dry bones in one day. But now, there are ways to prevent the epidemic. When we go out thousands of miles west, we will be able to fight again.

No worries.

The logic is completely closed.

——

Since the day when the results were published, an endless stream of people have been lingering outside the city, including imperial examination scholars and many ordinary people.

Luoyang encountered a grand event that had not been seen in decades, and the crowd was enthusiastic.

For two days after the announcement of the results, all the discussions in Luoyang City were about the content of the imperial examination.

A hidden function of the imperial examination began to emerge. The imperial examination had a guiding role in values. In Luoyang city, whether it was traffickers or people who could read and write, the illiterate people discussed farming and craftsmanship in the streets and alleys, and the literate people discussed the classics and calculations.

As for military strategy and other matters, this scientific expedition covered a lot of knowledge and involved a lot, so the discussion it aroused was very wide-ranging.

The purpose of posting test papers all over the city was to show justice.

In the past two days, most of the scholars who took the exam had checked their test papers and basically knew whether their answers were good or bad.

On the third day after the announcement of the list, another action was taken.

The Yulin Army came out of the city, and under the watch of countless people, they removed all the test papers from all over the city. It took almost half a morning to remove nearly 100,000 papers.

After the city wall was vacated, the Yulin army made another move on the city wall.

From the battlements, bolts of wide white silk were thrown down one by one. The white silk was covered with large characters written in cinnabar.

People looked up.

On a piece of white silk, it was written on the front, [Scholars selected by the Confucian Classics]

Going down, there are vermilion names one after another.

The first scholar named in the Confucian classics was a native of Luoyang, Meng Guang and Meng Xiaoyu, who held the highest rank in Confucian classics.

The second person, Zhao Yi from Luoyang, was a minor in Confucian classics.

The third person, Wu De, a native of Yingchuan, was a junior scholar of Confucian classics.

The top three are like this, and below, there are many names densely packed, and there are as many as a hundred people at one count.

At the same time as the names of the candidates were announced, Yu Linjun posted the test papers of the candidates aside. This time, there were hundreds of test papers, posted neither high nor low to facilitate everyone's verification.

As soon as the test papers were posted, the crowd of onlookers rushed away.

Everyone went to look at the test paper of Meng Guang, a Luoyang native who was promoted to a high school official position. Meng Guang's test paper was clearly posted there.

I don’t know how many pairs of eyes were staring at this test paper. At first glance, everyone saw that the test paper was full of words. At second glance, they saw that the words on the test paper were neatly written and the handwriting was handsome. At this first sight, everyone was convinced.
To be continued...