More than ten minutes passed, and the wolf finally stopped in front of a wall.

The black wolf started drilling in the place designated by the ghost wolf, the wall of the second layer of the underground maze was obviously more difficult to drill through than the first layer, Jin Buchang and the black wolf took turns to work, and it took a full half an hour to completely open the entrance to the third layer of the underground maze.

"Interference signals?" As soon as the entrance to the third floor was passed, a rustling sound came from everyone's ears.

"There are interference signals underground, the secret of the Pentagon Conference is big enough, and the defense is too tight, I really don't know if I enter the headquarters of the Wisdom Foundation, I don't know what amazing discoveries there are." Jin Bu said.

"Don't you know when you go in? Black wolf, can the AI handle it? Wen Ya asked.

"No problem, I can handle the small interference signal." The AI replied in the affirmative, and after a short while, sure enough, the interference signal disappeared and the communication was restored.

After everyone rested for enough time, the wolf led everyone into the third layer of the underground labyrinth, and this time the wolf's speed was obviously faster again.

The hardest part of the stacking maze should be the second layer, and as long as you successfully enter the third layer, the road behind should be much easier.

The third floor of the underground labyrinth is not large, and it didn't take long for the wolf to find the entrance to the interior of the building.

"Black wolf, change the drill bit." The wolf whispered, and the black wolf was not ambiguous, took out a small drill bit from his backpack, and skillfully installed it on the drilling rig.

Then, in the position designated by the magic wolf, he carefully drilled up.

Since it is the entrance to the interior of the building, no one knows what is going on behind the wall, so the drilling speed is very slow.

The black wolf expanded the hole drilled out of the drill bit little by little, and soon, the black wolf felt that the front was empty, and he was overjoyed, and quickly stopped and slowly took out the drill bit.

The wolf glanced at the borehole, and the wall was indeed drilled through.

"Red sand, it's clear, there doesn't seem to be movement inside, do you want to continue?" The ghost wolf turned his head and asked Wen Ya in a low voice, the underground maze walked smoothly today, saving a lot of time.

"Let's take a look at the situation on the other side first." Wen Ya said.

The wolf took out a probe from his bag and easily penetrated the hole, and the other end of the probe was connected to the equipment carried by the black wolf.

The black wolf turned on the device, and the image on the other side of the wall appeared on the screen.

What's on the other side of the wall? Everyone was curious, and they all gathered around the black wolf, their eyes glued to the screen.

I saw a closed room appear on the screen, it was dark, the room was empty and there was nothing.

The wolf adjusted the angle of the probe, and everyone finally saw that there was a narrow passage connecting the enclosed room.

"The room is a little weird, after opening the entrance, everyone should not move, wait until I go in to explore the way." The wolf spoke.

Everyone whispered in response, and began to expand the hole lightly, until the hole could accommodate one person to enter, the wolf brought a tactical eyepiece, and did not see any infrared detectors in the room, so he cautiously climbed into the room.

The wolf first walked around the room a few times, then put his hand on the wall and groped carefully, occasionally pressing his ear to the wall.

Click!

The wolf gently pressed a bulge on the wall, and the sealed wall slowly rose, revealing another room.

"A secret room within a secret room?"

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