After entering the stairway below, there is a corridor. It's relatively safe here, but Lin Rui still found through a speculum that there were two guards in the aisle in front of him.

He retracted his speculum and gave orders to the team in sign language.

Sergei nodded, turned and walked ahead. The two guards were at the door of a room, and they didn't seem surprised that they walked in. Just looking at them, one of them said, "How's it going out there?"

"I'm going to have to stay up all night anyway. Sergei whispered. As he spoke, he continued to walk forward, and Lin Rui followed behind him. The two guards chuckled under their breath and pulled cigarettes out of their pockets and smoked together. Looks like he just came here to smoke.

Lin Rui took two steps and walked forward side by side with Sergei. Then Lin Rui gave Sergei a look, and suddenly rushed to move. Lin Rui's arms were wrong, and he locked the neck of one of the guards with his arms and twisted it hard. The guard was instantly broken by his arms and neck.

And Sergey, too, grabbed another guard by the neck and shot a tranquilizer gun at his neck. The guard struggled only a few times before moving. The biscuits behind him and a few O2 team members hurriedly walked over and dragged the two guards outside.

Lin Rui leaned against the door and listened, and said in a low voice, "There are voices here, it should be the monitoring room on duty." Remember, don't make too much noise once you're inside, and get rid of the people inside. ”

"Boss, we're going to get Edric. There's no need to get into trouble, is there?" said Sausage.

"You know what? This monitoring room can give us more accurate information. Otherwise, you know where Adric is hiding and how to find him?" Sergei said, "and if we control the surveillance room, we can see the entire area through camera surveillance, which means a lot to us." ”

"Okay. Sausage nodded.

Lin Rui stretched out three fingers, and then began to count down in silence. The last finger is down. Lin Rui and Sergei pushed the door and walked in. The people inside did not notice anything unusual for a while, and they opened fire continuously. What's even worse is that none of these staff on duty have weapons in their hands. This time, they were even more caught off guard and were all knocked down.

"Jiang'an!" Lin Rui pointed to the surveillance video, Jiang'an nodded, and connected his tactical tablet to the computer in the duty room. Soon he completed the investigation of the surveillance video area. Whispered. "We are currently in the North End. Where this Adrick is, it is not clear at all. But judging by their surveillance video, the lower strata of the South District are the most likely. ”

"There's a lower level here?" said Guncannon with a frown.

"Yes, but we'll have to go to the Southside. "And it can't be empty here, at least two people have to be left." ”

Lin Rui nodded and said, "Guns, roses, the two of you stay." The others followed me, guiding us on surveillance video at all times. ”

"Understood. Rose nodded, "I'll leave it to us here." ”

Lin Rui looked at his watch and said in a low voice, "Time is running out, we have to hurry." ”

They turned and continued through the hallway, turning onto the south side, where there were no stairs and only an elevator. Lin Rui and the others walked in and checked it, and then said in a low voice, "This should be an elevator, but there doesn't seem to be a switch." ”

"Then it should be remote control, take a good look at the gun, there should be a remote control button next to the monitoring equipment. Sergey looked at it and made a gesture to the camera.

The guns and roses who stayed in the duty room all nodded, "We are looking for, if it is remotely controlled, then the switch should be in the duty room." Well, found it. "The gun found the lift button next to the surveillance computer in the duty room. After pressing, the slight tremor that the elevator began to produce finally began to descend.

"This place is really well guarded, they design it like this, even if someone sneaks in, as long as they don't have the permission of the guard on duty, they still can't enter the next floor. Lin Rui said in a low voice.

"That's true. Jiang Jian said in a low voice.

"I wonder if we're going to face a lot of enemies when we go down. If that's the case, we'll be in for a bad day. Because we can't make any mistakes. Sergei whispered.

"You go ahead. Lin Rui nodded. "Beware of traps. ”

They took the elevator to the lower floor, and Sergey walked in front with a gun, and they found another door. It looked like there were no guards here, but Sergey was just trying to move forward and suddenly stopped. He checked his feet, where there was a thick carpet. He immediately reached out to stop the others from advancing.

"What's going on?" said Shogishi in a low voice.

"It's not right, this carpet is very thick and elegant, and it would be normal if it was spread in a room. But there is something wrong with this kind of carpet in the hallway. Sergei crouched down and stuck a dagger into the carpet. The sharp dagger quickly cut through the carpet, and he reached out and touched it in a low voice. "Sure enough, there are ghosts. ”

"What's wrong?" Lin Rui frowned.

"A leaky cable induction alarm device. The system consists of two parts: the detector main unit and two leakage cables that are specially processed according to the design requirements. The detector host consists of a power supply unit, a transmitting power supply, and a receiving power supply. The signal processing unit and the detection unit are composed.

The main unit for use in low-temperature environments is equipped with a combined thermostatic unit. The leaking cable that acts as a detection unit consists of two leaking cables and two non-leaking cables connected to it. Non-leaking cables have a nominal length of 10 meters each, and leaking cables have a larger nominal length each.

The transmitter unit generates high-frequency energy fed into the leakage cable for transmission and transmits it in the cable. When the energy is transmitted along the cable, part of the energy leaks into the space through the leakage gap of the leaking cable, and an electromagnetic field is established within the range of the alerted space, and a part of the energy is received by the leaking cable installed nearby to form a direct coupling of the transmitting and receiving energy.

When the intruder enters the induction area formed by the two cables, this part of the electromagnetic energy is disturbed, causing a change in the received signal, which is detected after amplification, and pushes the alarm indicator to light up, and at the same time makes the relay contact open. Sergei whispered.

"Damn, I knew it wasn't going to be that simple. Lin Rui said in a low voice, there are heavy guards outside, but there is no one here, which is very strange. Russians, how's that, can you demolish it?"

"No problem, the person who set up this alarm device is unexpected. It's not about how difficult the system itself is. Sergei whispered, "Give me a few minutes." ”