Fan Keqin had already figured it out when he was observing the corridor near the prison, so he agreed: "Yes, we should not set up eyes near the prison. But we must find a way to determine the situation inside.

.Otherwise, once we find the wrong location of the combat readiness depot, it may lead to the complete failure of the operation."

Hua Zhang nodded and said: "Actually, the possibility that the prison is a war reserve is quite high, but we can't be sure right now."

"Yes." Fan Keqin said: "We can see the sentries on those watchtowers. They are all Japanese soldiers, not puppet troops. Judging from this, it is indeed very likely that there is a war equipment warehouse inside. But it is still that

In a word, if you find the wrong one, you will really fail completely.

But... before we came back, when we were observing the three-story residential building, did you notice that there were two people wearing pseudo-government police uniforms and red sleeve bands walking towards the south side?

That side must be the gate of the prison, and the armbands worn by these two policemen should be the symbol of the prison guards. So this prison is not just guarded by little Japs. There must also be Manchukuo policemen inside."

"Yes." When he said this, Hua Zhang also remembered it and said: "You mean, we can make a fuss about the police of the Puppet Manchukuo?"

Fan Keqin nodded and said: "I think it should be possible. In addition, we should send someone to check the information about the prison. It would be best to find the person who built the prison."

Hua Zhang said: "It seems possible. Before it's too late, I'll contact Captain Wang."

"Farewell." Fan Keqin said: "We will check it ourselves tomorrow. The local library should have records on this. We can look it up in architectural literature. In addition, I actually have another idea.

"

As he spoke, Fan Keqin took the pen and paper and began to draw. After he finished the drawing, he said: "Actually, it is not impossible to establish surveillance points, but this method may cost more manpower. Fortunately,

There’s nothing else to do locally right now, so you watch.”

As he spoke, Fan Keqin pointed the simple diagram drawn on the paper back and forth with the tip of his pen and said: "This is a prison. This side is the city and the other side is the suburbs. Look, if you build it in these three directions of the prison,

As for surveillance points. If this is really a war reserve, then we can see whether the Japanese transport supplies in or out, but we are worried that the risk will be too high if surveillance points are established around the prison."

Hua Zhang nodded and said, "Yes, that's true."

Seeing this, Fan Keqin used his pen to extend outwards in the direction of the three surveillance points, perpendicularly to the prison, and said: "But what if we extend it in further streets, that is, in the directions of these three cities, and break away?"

Within the scope of the prison. Surveillance points are set up at these street entrances. So if the prison is a war reserve, can we observe through these surveillance points regardless of the incoming and outgoing materials? "

Hua Zhang immediately understood what he meant, nodded and said: "That's right, it's just that as we extend outwards, there will be more street corners and road sections that need to be monitored, so we need to build more eyes and use more

Manpower. However, once you leave the confines of the prison, security will also increase."

"Yes." Fan Keqin said, "That's what I mean."

What does it mean? That is, if point a is the target you want to monitor, then if you monitor it at the nearest place, such as the door opposite to point a, or at the door, then you only need one monitoring point to completely monitor point a.

The entry and exit of personnel.

But if you are too close, your chance of being discovered will also increase. On the other hand, if you move further away, then you need to establish surveillance points at both sides of the street where point a is located. Surveillance

The points then became two.

If point a is very alert and you need to go further to establish a surveillance point, then if the streets where the intersections on both sides meet have a three-way intersection, then you can only set up eyes on the far ends of the three-way intersection on each side.

.That is to say, it needs to be turned into six monitoring points to complete the monitoring of the entry and exit of people at point a.

This is what Fan Keqin said. It is impossible to establish a monitoring point in front of the prison because it is unsafe. But when it is further away, safety is guaranteed. However, when setting up a monitoring point, all roads that may lead to point a need to be taken into consideration.

The farther the distance, the more roads leading to it, and the number of surveillance points required will increase accordingly. The manpower required will also need to be improved accordingly.

Hua Zhang said: "Then starting tomorrow, we can move to the far end of the prison..." At this point, he drew a half arc in the direction of the city on the drawing with his hand. Then he continued: "We must have all the intersections in this circle.

A reconnaissance. At least it's an intersection where you can drive."

"Well." Fan Keqin said: "It seems that you need to place a dead mailbox for Wang Zhanyuan. Use the dead mailbox to convey this matter to him, and then draw a schematic diagram for him. Otherwise, if you use the phone, I'm afraid you need to use a dead mailbox.

It will take a long phone call to explain clearly. Now we don't have to worry. After all, the epidemic prevention and water supply headquarters will also take time. After Wang Zhanyuan and the others have investigated, they will set up eyes on all the intersections at the far end of the prison. Still the same principle, safety

First."

"Yes." Hua Zhang stood up and answered, "Brother, do we have to go to the local library tomorrow?"

"It's better to go there." Fan Keqin said: "It would be the best to find out something. Just in time, when we go to the library tomorrow, we will put the information in the dead mailbox for him. We will set off in the morning, around noon

, Wang Zhanyuan will receive the letter."

"Understood." Hua Zhang replied, took Fan Keqin's pen and paper, and began to write the information to be conveyed to Wang Zhanyuan in detail using his non-dominant hand. Then he also drew a picture. It was clearly marked.

After checking it twice, I folded it and put it in the hollow bed leg temporarily. I will just take it with me when I go out tomorrow.

Hua Zhang returned to the sofa and sat down again, saying: "Brother, if it is really a war reserve, what should we do? That prison is just like a small city with walls. It is also very difficult to attack."

Fan Keqin said: "Yes, so it depends on how much information we can master. If we only confirm that the combat reserve is in the prison, the rest of the situation, such as the internal structure of the prison, the distribution of sentries, etc., are not clear.
Chapter completed!