"My lord, no one entered the territory late last night." The guard gave an affirmative answer.

If he asks who is coming in and out during the day, then he may have to think and hesitate for a while, after all, there are too many people coming in and out during the day.

But Su Yu is asking now about the night, it is the middle of the night when everyone has been asleep, not to mention a person at this point in time, but whenever a mosquito flies over, they can remember it clearly!

"My lord, did something happen last night?" Although the person who answered was very sure, he also knew that since the lord would ask such a question, there must be something wrong.

Could it be that someone entered the territory through abnormal channels last night?!

The so-called normal channel must be to enter through the city gate; There are many non-normal channels, but no matter which one they are, they must only be used by people with bad intentions.

"Don't talk about this matter first, just communicate with your guards in private, and pay attention to whether there are any strange faces in the territory these days." At this time, it was a natural disaster, and everyone was already panicking, and if everyone knew that there were people with bad intentions breaking into the territory, it would undoubtedly be even worse for the atmosphere in the territory.

Therefore, the matter of catching these 'black households' must be hidden, and no one else can know about it.

The biggest problem at present is that Su Yu and they don't know any information about these people, whether they are men, women, old and young, tall, short, fat and thin, it is obviously not possible to rely on the eyesight of the guards, but this is also the way there is no way at present.

"We know, we won't tell anyone else about it!" The guards present are all old residents who have been in the territory for a long time, and their favorability and loyalty values are full, so Su Yu is not worried about their betrayal.

She was afraid that some of them would accidentally leak their mouths, so she didn't forget to remind them to keep it secret before leaving.

Looking at the backs of the lord leaving, the expressions of several guards returned to seriousness.

"This matter is very important, everyone remembers the words of the lord, and must not let anyone else know."

"Don't worry, captain, we're sure of the others." First the lord repeatedly emphasized, and then their immediate superiors solemnly reminded them that even if they were stupid people, they would not know their mistakes and make mistakes.

After confirming that the matter was classified, they also began to think about how to find out the black household.

"Captain, since someone sneaked into the territory, they must be trying to do bad things, the territory is so big, if they want to hide for a few days, we can't do it, and there are so many people in the territory, not everyone recognizes ......"

"Why don't we ask the patrol guards to check more places where it's easy to hide in the past two days?"

"No, I said that I can't let others know about it, if I tell the patrol guards, how can I explain it?"

"I think they sneak in and whatever they want to do, there must be a time to show up, otherwise how do they do things? Or we'll just wait, until they show up on their own......"

"What's this way of? What we have to do is to find these black households as soon as possible and stop them from doing bad things, if they take the initiative to appear, then maybe they have already done everything! ”

……

After some discussion, no one could think of a good solution.

Just then, there was a knock at the door, which was a reminder of the change of the guard.

Originally, four of the few people in the room went out to get ready for work, and then there were four more guards in the room who had just left work.

Because the lord said that this matter could not be known to outsiders, but it was possible for them to communicate with the gatekeepers in private, so after these four people came in, the captain of the gatekeeper told these four people about the black household.

"Captain, I actually have a solution." One of the guards, who had just left work, hesitated.

The captain raised an eyebrow and told him to speak.

"That's right, I see that the combat teams in the territory have a special set of clothes, so that they can easily recognize their teammates."

"If we also prepare something as a token, just like this clothes, and distribute it for everyone in the territory to use, so that we don't need to distinguish who is the black household, as long as there is no use, it is suspicious, and we can arrest and investigate."

A slow head asked, "People don't necessarily want to wear the prescribed clothes, do they?" ”

Without waiting for this person to answer, the captain who had already understood this method reminded him: "I said that it doesn't have to be clothes, it can be hats, shoes, bracelets, necklaces, ......."

To be honest, the method proposed by this person is a little rough, but it would be a good idea if you modify some details.

This method is cumbersome, but it is the easiest and best to use.

"I will tell the lord about this, the lord is a generous man, and he will definitely give you a lot of rewards when the time comes." Now that he had found a way, the captain didn't ink, and got up directly to prepare to go to the City Lord's Mansion.

However, he was in a hurry, and Su Yu had only left for a long time, and she was still checking the operation of various shops in the territory, so she didn't go back, and the captain who had touched the empty could only write down the matter and put it on the table of the City Lord's Mansion.

……

On the other side, Su Yu, who didn't know that someone had already thought of finding out how to black households, was now checking the registration status of each store.

Registration here refers to the purchase record of the limited edition of the goods sold in these two days, and almost every store will ask people who have already bought a certain limited edition to leave their own signatures as proof.

However, not all goods need to be purchased with proof of receipt.

For example, the things sold in restaurants, hospitals, and charcoal shops are consumables, and they must be bought when they run out, so although they are also sold in limited quantities, they do not need to leave credentials for every purchase, which is not only troublesome, but also has a large number of vouchers, and they are not easy to organize.

Only at the time of the first purchase, the store will give a small book, called the 'Purchase Limit Register', which is stamped with a territory-specific seal and a unique number to prevent counterfeiting.

The function of the purchase restriction record book is that every time you buy consumables, you need to bring the record book to buy, when you bought something, how much you bought, and how much money you spent, will be recorded on it, so that not only customers can easily check their purchase records, but also the store is convenient to register.

Considering the importance of the record book, in order to prevent someone from deliberately buying someone else's record book in order to buy more things, or deliberately lying that they lost the book and wanted to make up for it, and then buying two copies of things by themselves, this record book itself also contains many secrets.

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