The highly concentrated gaseous hydrogen cyanide is transported into Fort Knox through the ventilation system, and the corrosive hydrogen cyanide is relatively small, and the harm to the environment is relatively light, which is very suitable for use in the "Fort Knox Gold Concentration Camp".

Gu Qi glued the gas analyzer to his arm, looking at the concentration of hydrogen cyanide, the content of hydrogen cyanide in the air can be ignited after reaching a certain proportion, in such a confined environment means an explosion, wearing an old-fashioned deep-water diving suit, there are some metal parts, and sparks may be rubbed.

He held the white chain that connected Klaus to him.

Klaus came out of the open wall, saw Gu Qi standing in the big room in full gear, understood what had happened, and said with a smile: "What are you going to do?" ”

"Let them do their own thing." Gu Qi picked up the pickaxe again as he spoke, and walked to the office area.

"Okay." Klaus picks up another pickaxe.

They began to tear down the door again, and if the one they had opened before was the Golden Gate, it was the standard door of death.

After dismantling the door, Gu Qi returned to the vault and sat down behind the corner of the aisle, if there was really an explosion, he would only need to withstand some shock waves and flames if he hid here, his deep-water diving suit had strong pressure resistance, there was a soft cushion inside, and the walls of the vault were extremely strong, so it should not be a big problem.

Klaus stayed alone in the large room outside the vault door, placed the door under the vent, crouched down, and pushed it open.

Outside the door was the hall on the first floor of Fort Knox, and Klaus crouched, opening the doors of each room at a very slow speed, and then walked in, using a thin wire to open a crack in the windows of each room.

Outside there were prayer gurus, and if he didn't crouch, he would probably be seen.

After being busy for a while, the rooms on the first floor were connected. Klaus returned to the large room, put an air pump in the center of the room, put the air outlet in the hall on the first floor, and turned on the switch.

Hydrogen cyanide weighs a little less than air, which means that the gas does not sink. The ascent is also very slow, with excellent uniform diffusion, and a breeze can send the gas far away.

Three huge gas tanks were still transporting hydrogen cyanide to the ground of Fort Knox, and Klaus worked hard for a while, and then returned the hydrogen cyanide back to the surface, and the poisonous gas returned was very limited, far less than the infusion, but because of the high concentration, even if it spread, it would be very deadly.

The closest person was the first to fall. Loss of consciousness, convulsions of the body,**, soon stopped breathing; Those who were farther away suddenly breathed heavily, as if they were sighing continuously, and some immediately vomited and their limbs trembled; Those farthest away had slightly milder symptoms and smelled bitter almonds. His lips and throat are unconscious, and he breathes as if someone is holding his neck.

Pruitt and Daniel are both farther away. They were not slow to react, and when the first person fell, Daniel immediately released a wind ring to wrap around the people around him, shouting loudly for everyone to leave quickly, Pruitt took out a handkerchief and covered his mouth and nose, turned his head and ran. I almost hit my head on the wind wall.

"Poison gas leaked! Stop inflating! Fast! Pruitt shouted into the walkie-talkie.

In fact, there was no need for him to shout, those who were wearing gas masks next to the gas tank had already closed the valve when they saw someone falling, but the hydrogen cyanide in Fort Knox was still draining out, and it would take a long time to drain it clean.

"Check the source of the leak! Fast! Pruitt continued to shout into the walkie-talkie. It's not that he was dizzy and used the walkie-talkie as a paper microphone; It's not that hydrogen cyanide has reduced his blood's ability to carry oxygen, and his brain is starved of oxygen, it's purely because the screaming sound of the wind wall is too loud, which affects his hearing, and as soon as his hearing drops, people will involuntarily become loud voices.

"I think I know where the leak is." Daniel looked at the ground buildings in Fort Knox and said, "You guys retreat, I'll go block the poison gas and tell them to pump it out as soon as possible." ”

As he spoke, he released a small wind circle to surround himself, and when the people in the wind circle retreated to the rear wind wall, he put away the wind circle.

He walked over to a gas tank, asked for a gas mask to put on, climbed onto the second-floor roof of Fort Knox, and retracted the small wind ring, releasing an oversized wind ring that surrounded the building.

The wind ring can ensure that the poisonous gas will not leak out, the air flow in the circle is upward, the hydrogen cyanide will not sink, and it will be slowly diluted when it rises, but it is very physically demanding to maintain such a large wind circle, he has to put away the small wind circle, go all out, and must stand at the center of the wind circle, so he wears a gas mask.

…………

…………

"Aren't you afraid that the poison gas will spread and poison all the people in Knox Town?" Miao Yi asked curiously.

"Daniel's ability can make the poison gas not spread, even if he can't, there are always a few of the so many prayer masters outside who can do this, I asked Klaus to do this, I just want to kill a batch before the people outside find out, there is no need to help them eliminate all the poison gas here, and when the hydrogen cyanide spreads to Knox Town, the concentration is no longer fatal, at most it makes the people in the town sick, so that the media will pay attention to this poison gas leak." Gu Qi had already considered the consequences before making a move.

"It's a pity, the content is too low outside, otherwise they would have to be burned to death." Miao Yi sighed, in order to reduce the mass, the metal box it was hiding in was made too small, although it would be safe in a small space, but it was very uncomfortable for a cat to not be able to move.

"It's easy to set fires." Gu Qi came to the door of the vault and turned off the switch of the air pump.

"Daniel is already on the roof, are you going to kill him?" Klaus took the hose back from the air pump.

"No, let him continue to let the wind on the roof of the building, the wind circle can cover our actions, take the weapon, and when he is tired and lie down, we will act." Gu Qi said to Klaus.

"Okay." Klaus closed the door and opened it again, this time leading to the third room of the Skyvertical HQ database.

The room was filled with a variety of weapons, not too many, but certainly as many as a real arsenal, from which Klaus brought out all sorts of sniper rifles, squad machine guns, grenades, hand-held RPGs, grenade launchers, heavy machine guns, and countless ammo.

After moving the weapons out, he closed and opened the doors again, went to the second floor of Fort Knox, and began to arrange the weapons in the various rooms.

Ten minutes later, Klaus and Gu Qi came to the door leading to the first floor together.

The door had been locked from the outside, and although it was thick, it was a far cry from the door of the vault, and Klaus could walk through it.

Opening the door from the outside, they went up to the second floor.

The wind circle was still there, rolling countless stones and dust, perfectly concealing Gu Qi and Klaus's actions, and they couldn't be seen from the outside at all.

After looking around with an infrared thermal imaging scope, Gu Qi and Klaus walked into different rooms respectively and picked up a sniper rifle with a silencer.

Now all it takes is to wait for the wind circle to disappear and they can start killing immediately.

And at this moment, the radio suddenly sounded again: "Mr. Gu, I'm Daniel, you can talk to me from any phone in Fort Knox." ”

Gu Qi put down the sniper rifle, walked to the phone in this room, unplugged the communication cable, and inserted it into the slot on the neck of the diving suit: "In the case of poisonous gas, you hope that I will be stupid enough to take off my gas mask and talk to you on the phone?" ”

"No, I'm sure you're smart enough to find a way to get on the phone, and it turns out I'm right." Daniel's voice was so clear that Miao Yi could hear it.

"Tell me, what's the matter?" Gu Qi pulled the communication line, returned to the window, and raised the sniper rifle again.

"I hope you can stop emitting poison gas." Daniel's voice was slightly tired.

"You emitted the gas." Gu Qi's voice was calm.

"We've stopped." Daniel's breathing grew heavier and heavier.

"That's fine, it sounds like you're tired, so it's better to talk less nonsense and save some effort." Gu Qi's deep-water diving suit was also very heavy, but he ate a lot, slept well on the plane, and didn't feel tired at all.

"Okay, the head of the Secret Service has something to say to you, please wait." Daniel said, pressing the phone's communication button.

It didn't take long for a young woman's voice to ring on the phone: "Mr. Gu, long time no see, don't come unharmed?" ”

"Miller?" Gu Qi was stunned for a moment, he remembered this voice.

"It's me, you didn't pick the right time, I still want to get some beauty sleep, and now I have to get up and get all the way from Nashville." Miller sighed as he spoke.

"I didn't expect you to be the head of the Secret Service." Gu Qi aimed at a person and pulled the trigger, but unfortunately the bullet was blown crooked by the wind circle, and he didn't know where it flew.

"Shh......h Please keep this matter a secret, few people know my true identity, and it's better to think of me as an ordinary agent of the Secret Service. Miller chuckled.

"If that's the case, it's better for us to end the call, ordinary agents can't change anything." Gu Qi said and unplugged the communication line.

After a while, the radio rang again, and it was Daniel's deep voice: "Uh...... Mr. Gu, that ......"

Gu Qi connected the communication line again and said: "The gold I moved away is regarded as compensation for the waste of my time just now, there is a universal slogan called 'time is money', and I can accept it if it is replaced by gold bricks." ”

"I apologize, Mr. Gu, I already know your intentions, if I verbally promise that I will not fight Xu Peirong's idea again, and I will not trouble you again in the future, are you willing to believe it?" Miller's voice rang out again.

"I don't doubt your reason, but I won't give up, otherwise others will imitate your actions after they know about it, this is the indirect trouble you have brought about, a big trouble that cannot be ignored, but I am willing to accept compensation." Gu Qi put down the sniper rifle-

(To be continued......)