"Sure enough, these are infrared rays that will trigger an alarm once they are cut off. Sergei whispered.

"What can you do?" Lin Rui said in a low voice.

"This is an active infrared alarm, it is the alarm that actively emits infrared rays, and when the infrared rays hit obstacles, they will bounce back and be received by the probe of the alarm. If the probe detects that the infrared rays are stationary, that is, the red line is constantly emitted and constantly rebounds, then the alarm will not alarm.

When a moving object violates this invisible red line, the probe will detect an abnormality and will call an alarm. But as long as you don't touch it, it's fine. Sergei whispered.

"Nonsense, can I not know? I mean, how can it not be triggered. Lin Rui said in a low voice.

"This alarm device has two ports, that is, there is a transmitter at each end of this red ray. Sergei whispered, "We slowly climbed along the fence to the infrared emitting port, and we were able to avoid triggering it by passing over from the other side of the port." ”

"I see, that is, to bypass the infrared emitting port. You can avoid triggering. Lin Rui said in a low voice.

"Boss, I don't see that you still have potential in this area. Or, I won't be a mercenary in the future, and follow me to do my old job. Sergei snickered.

Lin Rui shook his head, "I'm not a thief." ”

"Hey, I'm not a thief. You could call me a Robin Hood-esque hero. Sergei whispered.

"Besides, I'll kick you off. Lin Rui shook his head while climbing. On the heavy stone wall, two moved along the wall to one side. Their bodies and legs were all pressed against the wall, and they didn't dare to use too much force for fear of making a move, so they almost relied on their arms to pull the wall to one side. Lin Rui and Sergei moved nearly thirty meters to one side.

"It's here. Lin Rui said in a low voice.

"Very well, let's go up from here. Be careful not to touch that transmitter. Sergei whispered.

Lin Rui nodded, clinging to the wall with both hands, and turned upward. Carefully avoid the port of the infrared alarm and lean against the wall. Sergei fell silently beside him. Lin Rui took out his binoculars and looked down, "Damn, there are actually three guards in such a small area." ”

"I'll go down and have a look. Sergei whispered.

"Don't move. Lin Rui held him down, "Take a closer look, and see that those points of light are flickering in the dark." ”

"With a wireless camera, I can interfere with them, but not for too long. Sergei whispered, "If it takes too long, their guards will become suspicious." ”

"So I told you not to act rashly and to be observant. Lin Rui said in a low voice.

"Understood. Sergei nodded.

"The bell tower over there. Lin Rui said in a low voice, "Someone, it should be a sniper." ”

"Are you sure?" said Sergei in a low voice, "from there, you can see us here if you poke your head out." ”

Lin Rui said in a low voice, "That's why I asked you not to move." Judging by the position of his gun, he should not stick his head out. ”

"So plus the following three, it's four guards?" Sergei said in a low voice, "That's how much, at most more than two hundred square meters, with four guards?"

"That's not the main entrance location, I guess there's more people there. Lin Rui said in a low voice, "What are you going to do?"

"Keep an eye on one of the guards, then move within ten meters of him without a trace. Secretly use this thing and pair it with his smart bracelet. Sergey took out the instrument in his hand.

"Do you have to be so close?" Lin Rui frowned.

"It's a shame that it has to be so close. Otherwise, it's useless. Sergei whispered, "I'm going to start with the guy on the very edge, who is too dimly lit and won't be noticed by the other guards." And there are some places that can be used to hide, and if I keep my body low, most of the cameras won't be able to catch me, except for that one. Sergey pointed to the distance, where there was a monitor installed under a street lamp.

"How do you solve that surveillance?" Lin Rui said in a low voice.

"I have jamming devices that should interfere with the video signal for at least two minutes. But I can actually get through there in fifteen seconds. Sergei replied in a low voice.

"Okay, do it. Be careful not to trigger the alarm. I have a good sight here, so I can stay on it and give you guidance. Lin Rui said in a low voice.

Sergei nodded, then leaned down and slid the nylon rope around his waist and down the wall. More than six or seven meters high, he quickly slid down, silently hiding himself in a cloud of shadows. Lin Rui looked through the night vision device, and could only see a very vague shadow.

Because the camouflage on their bodies is specially made, it is very inconspicuously reflected under night vision devices, and it does not look like a human shape at all. Sergei was alert, like a cat that acted silently. Crawling, rolling, hiding themselves with the help of shelter, slowly approaching one of the guards.

He should have been twenty meters away from that guard, but Lin Rui looked at it from above, and he felt his heart beat faster. Sergei, the daring thief, actually touched the guard's feet. He crept forward against the ground, hiding his body in the shadow of a small flower bed.

Then Sergei's movements paused, as if waiting for the jammer to have an effect. After that, he ran a few steps in a very short time, and then with a fish leap, rolled into the other side. He didn't make a sound when he ran, but the wind from his movements seemed to surprise the guard.

The guard turned suspiciously, but did not notice Sergei.

Sergei, who was hiding in the dark, clearly saw that this guard also had a night vision device on his helmet, and it was a GPNVG-18 quadruple night vision device. This night vision device has four lenses, the full name is ground panoramic night vision system, compared to the traditional night vision device angle of 45 degrees, and this one can reach 120 degrees. There are almost no dead ends.

The U.S. military once distributed A-10 pilots and air fire control personnel, and of course, the price of this set of night vision devices alone reached a staggering more than $60,000. Originally, it was intended for low-altitude units to fight on the ground at night. Because this ancient monastery is condescending and has a wide field of vision, the guards also wear this high-end night vision device.

Sergei was nervous, "Damn, it's better not to look at me." Sergei was praying in a low voice, and at the same time hoping that the other party could get closer, and at the same time, his own instrument could be successfully paired with the other party's smart bracelet, and then copy the data information in it.

The other party's footsteps are getting closer and closer, and Russian thieves like Sergei feel that they are starting to get nervous.