In the anxious waiting of Luo Hao, Yun Lingfeng and others, as well as the crackling sound made by Lin Xiaoyang tapping the keyboard, time passed quietly minute by minute.

Nearly ten minutes had passed, and the air content in the airtight anti-nuclear and chemical defense chamber had dropped to less than fifty percent, and Luo Hao could already clearly feel that his breathing was a little difficult.

However, none of the five people in the anti-nuclear and chemical defense room made a sound to urge Lin Xiaoyang, and everyone was waiting quietly. The air they can use now is very limited, and talking will not only increase their own oxygen consumption, but also affect Lin Xiaoyang's work.

The working sound of the large exhaust fan "whining" was like the sneer of Uncle Death, full of sarcasm, laughing at Luo Hao, Yun Lingfeng and their stubborn resistance.

……

At an altitude of 10,000 meters, the Boeing 747 passenger plane that was luxuriously modified and originally used as the King of Vanagoga's visit to other countries has now become Fermi? The Oromid Air Command Center has full authority to command the encirclement and suppression of the Dragon Yin Force and the "Dragon Tooth" mercenary group.

Fermi? Oromid reclined on the armchair, sipping a slender glass glass of white wine in his hand, using the laptop in front of him to communicate with the on-site command of the military base on the ground.

"Kuti, how's it going?" Fermi asked, looking at his laptop. The tone of his voice seemed rather relaxed.

As the on-site commander of the encirclement and suppression operation of the military base, Kuti held a Karanikov automatic rifle in his hand and replied with a grim look: "We have surrounded the military base to the fullest, even a bird should not want to fly out!" ”

"Are you sure all the entrances and exits to the military base have been blocked?" Fermi asked, taking a sip of the white wine in his glass.

"Yes......"

As soon as Kuti agreed, he suddenly thought of something, glanced at Fermi on the screen with a dodge of his eyes, and said: "The emergency exit of the military base has not been blocked!" ”

"Bastard! What are you going to do!? ”

In the luxurious cabin of the plane, Fermi heard what Kukuti said, and immediately said angrily: "I told you to block all the entrances and exits of the military base, do you take my words as wind in your ears?" ”

The dog who was scolded by Fermi was bloody, Fermi didn't even dare to get out of the atmosphere, and said cautiously: "A few days ago, there was a series of heavy rains, and there was a serious mudslide landslide in the mountain, which has blocked the exit of the emergency channel, and they may not find the location of the emergency channel, they should ......"

"No, no!" Fermi immediately interrupted Kuti's words and said, "I have been in contact with them, and they can't be looked at with the eyes of ordinary people, and they can't be taken lightly. Now immediately send people to the emergency passage exit of the military base to prevent them from using the emergency passage to escape! ”

"Understood!"

Kuti immediately mobilized half of the personnel, a Badger Type 20 infantry fighting vehicle, and a K-52 helicopter gunship loaded with air-ground weapons to rush to the exit of the emergency passage of the military base.

The movement in front of the military base naturally did not hide the attention of Li Yifeng and Nighthawk, Li Yifeng looked at the headset with some confusion and asked, "Nighthawk, where are they going?" ”

"Just follow along."

Li Yifeng and Nighthawk cautiously moved their bodies into the jungle against the ground, exiting their current sniper positions.

The two men stuck to the ground and retreated for almost twenty meters before they got up from the ground, carried their tactical backpacks behind them, hunched their bodies, and accelerated their pace to chase the Ka-52 gunship in the sky.

……

Underground anti-nuclear and chemical defense chamber.

With the gradual decrease in the amount of oxygen, Luo Hao, Zhou Bai, Xu Xudong, Yun Lingfeng, and Situ Kong respectively experienced dizziness, shortness of breath, shortness of breath, and shortness of breath, which were hypoxic symptoms.

Lin Xiaoyang, who was still busy in front of the computer, also typed his fingers on the keyboard much slower than before because of lack of oxygen.

The six people trapped in the anti-nuclear and chemical defense room are already in a desperate situation at this moment!

"Hao, Haozi, are we really going to be trapped here?" Xu Xudong gasped and asked Luo Hao.

"Possibly."

Things have come to this point, Luo Hao has almost fallen into despair, maybe the emergency escape channel he said really only exists in theory!

"Hummingbird, don't be busy, let's save some energy and sit and rest for a while." Zhou Bai persuaded Lin Xiaoyang, who still had no intention of giving up.

"No, there must be an escape route, there must be!" Lin Xiaoyang stared at the computer screen with wide eyes and said, "Think about it, if this anti-nuclear and anti-chemical chamber has no passage to connect with the outside world, where does the air extracted from this room go?" And if there is no emergency passage and the main entrance of this base is blocked, what will happen to the people hiding in this anti-nuclear and anti-chemical defense room? Even if they carry an oxygen device, how long can they hold on? At the time of the construction of this anti-nuclear and anti-chemical chamber, this problem could not be ignored! ”

"And the cadre instructor said that there is no completely impregnable fortress in the world, and every fortress has its weakest point! So this iron cage must have its door! It's just that I haven't found it yet! ”

Hearing Lin Xiaoyang's words, the spirits of the other five people were suddenly lifted, and the flame of hope that was about to be extinguished in their hearts was rekindled.

"But even if there is a so-called 'cover door' in this iron cage, the air here can no longer support the consumption of our people." Zhou Bai said helplessly.

Although Zhou Bai's words hit other people's confidence very much, Luo Hao and Yun Lingfeng all knew that what Zhou Bai said was the truth, and it was an unavoidable fact!

Luo Hao looked up at the fast-spinning exhaust fan above his head, and his heart jumped. If the exhaust fan on the top of the head is regarded as an electric fan with its back to these people, and now this direction of rotation is to suck the air in the anti-nuclear and anti-chemical chamber, then let the exhaust fan rotate in reverse is to send the outside air in!

"Hummingbird, is there a way to change the working procedure of the large exhaust fan overhead? Let it work backwards? Luo Hao asked Lin Xiaoyang, who was still busy in front of the computer.

Hearing Luo Hao's question, Lin Xiaoyang was stunned for a moment, then a smile appeared on his face, he slapped his head suddenly, and suddenly realized: "Yes, why didn't I think of this!" If you let the exhaust fan work in reverse, you can recirculate the air outside! ”