As for the letter sent by Mo Yu like Twenty-Five City, this kind of secrecy is relatively low, so you don't need to use it, even if it is intercepted by others, it will not have any fatal consequences.

Therefore, this kind of information is generally not guarded against with a codebook, and it doesn't seem to have much effect.

There are also types of information levels between cities and cities, mainly by people, or by orders from people.

The main subject is still this person, and the codebook that may be used if it is generally above the level of the city lord.

But it doesn't mean that all the orders issued by the city lord are at the level of the city lord, for example, the city lord issues a city defense plan for my city for the year to other cities, although it seems that the city lord issued it.

But this kind of thing is actually the highest level of the city defense hall master, but when they release it, it is through the city lord's seal, and this kind of thing obviously cannot be regarded as a message transmission at the city level city lord level.

So there is no need to use a codebook.

But just like Mo Yu's appearance, Mo Yu met a major prisoner at that time and wanted other cities to help, this is in Mo Yu's tone instead of the tone of the Law Enforcement Hall, so it is completely possible to use some confidential documents.

Of course, Mo Yu was useless at that time, firstly, he felt that trouble was unnecessary, and secondly, there was no great possibility, after all, the situation that time was a very complicated situation.

Maybe the suspect didn't walk from there or even ran over, so Mo Yu didn't have much hope, but if it was released according to this confidential document, it would mean that he was completely qualified.

It's more than qualified to post something like this.

There must be a certain reason for stipulating this, and if the level of information is relatively low, it is actually very labor-intensive to use a codebook.

Because although this kind of codebook does not have too much technical content, it also has a certain period of replacement and needs to pay a certain fee for personnel.

Although doing this kind of work is basically enough to come out of the school, it also costs a certain amount of financial resources, after all, people can't work for a certain period of time, and they can't work but have to pay a salary, which should be calculated within the cost range.

Therefore, if the level of information is relatively low, it is completely unnecessary to use these people, plus some people take a long time to decipher, and some people have a relatively short time to decipher, and it takes a certain amount of time to obtain this information.

This is to say the degree of secrecy of this kind of information by the army, of course, including information above the city depending on the situation.

And this kind of character flies far away, and the altitude is quite high, although the speed is not as fast as those birds of prey, but the main thing is that the endurance is good, and it is more suitable for long-distance transportation.

There is still no problem in transporting letters, those birds of prey have a certain advantage in short-distance transportation, but because of human training, the raptors are now flying at a relatively low altitude, so the possibility of being intercepted is also very large.

And there are actually very few people who use this kind of thing, and the conditions for using it are very harsh or unnecessary.

It needs to be used in an emergency, and it is basically used in close proximity to two cities, but in a non-war situation, there really isn't much of a situation where something urgent happens between the two levels.

Mo Yu thanked An Xinbi again: "This is Brother Lao An's trouble." ”

It doesn't matter if it's six days, because Mo Yu feels that he may not be able to go out in six days, although he is eager to go home, but it's not bad for these ten days, he has come over for a year or two, and it's really not good if something really happens in the end.

Although it is indeed difficult to endure these days, it is good to have Bai Yunyi by his side, which means that no matter how bad it is, there is someone to chat with, so Mo Yu is still more comfortable.

It's good to spend these days, if it's really snowing tonight as An Xinbi said, then it is estimated that ten days may not be able to stop, and it is estimated that there is a great possibility for ten days.

But Mo Yu is still worried about one thing: "If it really snows heavily tonight, will there be some disasters nearby?" ”

An Xinbi thought for a while: "Actually, I really don't have anything to do today, I observed the weather in the afternoon and it was not particularly optimistic, so I went back to the City Lord's Mansion to make special arrangements for this matter, which can be regarded as a proper arrangement." ”

The people who sent the military aircraft hall to the nearby towns were on duty, especially near the hillside, and there were some villages and towns, or near the river, they sent a lot of people to guard back and forth, so that some local minor officials could provide them with supplies, and once they found an abnormal situation, they immediately retreated, and some people had already begun to defect to relatives in a safe area in advance, so the population was small and there was a lot less, and the pressure was much less. ”

However, An Xinbi's words made Bai Yunyi a little incomprehensible: "Lord Ancheng, what does it mean next to the river?" Is it easy to get a lot of water next to the river? Isn't it all frozen now? ”

An Xinbi smiled after hearing this: "Oh this thing, you may not know much about this situation, even if it is near a river or lake, because of the freezing, he may also have some ice disasters." ”

An Xinbi tried to speak as plainly as possible when he spoke, and he didn't speak in tongues, so he respected the two people very much.

In fact, Mo Yu also knew about this matter, whether Mo Yu became the city lord or before he became the city lord, he had heard of such a thing, but he just hadn't seen it with his own eyes.

Because such a natural phenomenon still requires certain climatic conditions.

An Xinbi continued to explain: "When the river is frozen, if there is a strong wind at this time, and the river embankment is relatively low, it is easy to blow the ice up to the river embankment, and we all have to walk the ice here."

"So serious?" Bai Yunyi still didn't understand, "Can that ice make water scratch?" Isn't ice heavy? ”

In fact, these things are not particularly difficult for people to understand, or they may sound like amazing things, but they don't feel very new in the people who have seen them.

An Xinbi also deliberately gave an example: "Sister Yunyi, do you say that if the boat is floating on the water and there is a strong wind, will it float away?" ”

Bai Yun nodded: "Do you need to talk about this?" Of course it will? ”

An Xinbi continued to follow the temptation: "What if it's a big, big ship? ”

Bai Yunyi continued: "Of course, it will be scraped away, no matter how big the ship is, it will float on the water, not on land, but does it matter if you ask this question?" ”

"Of course it matters," An Xinbi smiled, "Sister Yunyi, don't you think that the ice on the water is like a big, big boat?" If the wind is strong, he will also be floated away? ”

Bai Yunyi sounded like there was some truth, but he didn't feel that much sense: "But it's too heavy, right?" Besides, what does this have to do with disasters? ”

An Xinbi is a very, very patient person: "Maybe you don't believe it, if the wind is very strong, and it is still blowing in the direction of the riverbank, then this ice can go up to the riverbank, and because the friction of the ice is relatively small, there are countless ice pressing up behind, so he began to walk on land, and everywhere he went, the houses were destroyed and collapsed, and in some cases it was also very serious, but this situation did not occur often, and the conditions were still very harsh." ”

Although An Xinbi's example is not so appropriate, in Mo Yu's opinion, this example is already a very good example for those who don't know about these things, and the example given is also more vivid.

However, Bai Yunyi still didn't want to believe such a thing, and then said to An Xinbi with a smile: "City Lord An, do you say that such a situation may occur recently?" Can you go and have a look? ”

Mo Yu felt that this situation was still very dangerous, sometimes it was very fast, sometimes it seemed slow but very sharp, because Mo Yu had seen the scene after walking on the ice, and the whole scene was as if a big knife was slashing from above.

It looks like the whole world is very neat, but there is no trace of this blade in sight.

People in different places don't have the same idea about this kind of thing, and the name of this thing is also different.

However, although it is quite a miraculous thing, to be honest, this phenomenon is indeed very difficult to see, and the requirements for ice and wind are harsh.

Anxinbi's side is just to prevent just in case, many old people have seen this situation, it is very easy to avoid this situation, just evacuate in advance.

Don't think that some big trees can withstand these natural disasters, it is not a particularly possible thing, it may crack in the middle of the two trees, and even look like a very burly tree can be cut off directly from the middle.

These things are possible.

Bai Yunyi's idea is not particularly easy to implement, and it does not mean that this situation will necessarily occur if there is ice and strong winds, but it still depends on the situation of the river bank and the lake.

So An Xinbi smiled: "It should be unlikely, so it may disappoint you." ”

But Bai Yunyi next to him was still a little unrelenting: "Why don't you go and stay nearby?" What if this happens? ”

Mo Yu felt that he shouldn't be too entangled with others, so he said to Bai Yunyi: "You said that it was just in case, isn't it impossible to achieve most of the cases?" Besides, it's too cold there, so don't go. ”

Mo Yu was more afraid of the cold when he was in the south, of course, it didn't mean that he was not afraid when he was in the north, but his ability to withstand the cold became weaker and weaker when he was in the south.

So Mo Yu thought about being able to stay in the house at this time, of course it was the coolest to have a small stove, but in most of the cases, it was not lower than zero, or even above zero.

Last year, Mo Yu was able to feel the warmth of the south, and it was still in winter.

But Mo Yu only found out this year that there was still some air conditioning, why didn't he find this situation during the New Year.

Bai Yun was also a little dead after hearing Mo Yu's words: "Oh, it's a pity, I just want to see it."

Mo Yu thought to herself: I still want to see it, I haven't seen it a few times.

"Is everything almost arranged here?" Mo Yu is still more concerned about the situation of some civilians, and feels that civilians are suffering.