Only then did everyone remember that Qin Jianglan said on stage that he was very cold, and it was the strong cold dry fog that kept pushing the drone to stop in the air.

Thinking of this, the leaders instantly applauded excitedly, and the harder they slapped, they did not hesitate to slap red.

Su Wenruo sat in the back row, her eyes couldn't help but be rosy, Qin Jianglan's figure became more and more tall and heroic in her blurred vision.

He could even think of using the impact force of adjusting the spraying speed of the strong cold dry mist to propel the drone to cruise.

Judging from the excitement of these leaders on the scene, Qin Jianglan has successfully been recognized by them, that is to say, unless Yu Lin has a creativity that surpasses Qin Jianglan's design, it is possible to suppress Qin Jianglan.

But the reality is that Qin Jianglan's design is close to perfection, Ren Yulin has great ability, if he can maintain the same level as Qin Jianglan, it is already very rare, surpassing Qin Jianglan, Su Wenruo feels that there is no such possibility.

Her mood at the moment is actually very contradictory, she is happy for Qin Jianglan, and it is her husband Yu Lin who is competing with Qin Jianglan, these two people are bound to distinguish the winner and loser, she doesn't even dare to think about whether she is looking forward to Yu Lin losing to Qin Jianglan.

This kind of thinking should not be there.

But she didn't find the feeling of worrying about Yu Lin in her heart.

Qin Jianglan walked to the stage with Xiaohong, the drone above his head, and sat in the front row, the leaders on the left and right on both sides suddenly felt goosebumps on their bodies, Xiaohong was pushed by the sprayer, and the strong cold dry fog released at close range made them feel like they were blowing cold air.

The leader hurriedly pointed at Xiaohong embarrassedly and said to Qin Jianglan, "Can you let it go and play first?" ”

Qin Jianglan said with a smile: "I also want the leader to feel Xiaohong's coldness, I didn't expect the leader to be so unkind to see Xiaohong." ”

The leader shouted wronged: "Don't distort what I mean, if you are cold enough on stage, you will bring it down to harm us, what intentions." ”

This Qin Jianglan was chatting with the leader, Yu Lin had already come to the stage from the side, tried the microphone: "Testing", and the audience instantly quieted down, these people experienced the excitement of Fang Cai, and also wanted to see how earth-shattering this designer was later.

In the eyes of everyone in the audience, Qin Jianglan has never been an ordinary person, if Yu Lin can become Qin Jianglan's opponent in the competition, then Yu Lin should not be much worse.

I am even more looking forward to Yu Lin's performance.

Yu Lin also put a short video on the big screen behind him, and the highlighted picture he wanted to draw was completely different from the picture scene played by Qin Jianglan, Yu Lin played a piece of haze, and he could see that the environment was changing, but no matter which disaster scene he switched to, he didn't see much fire, it was always a hazy black and blurred picture.

Yu Lin froze the picture, in fact, there was nothing to see on the entire big screen at all, which was completely opposite to the scene where Qin Jianglan played out a burst of fire at any time, but it was a haze, and in the haze, I saw that something was moving.

Yu Lin stretched out his right hand sideways and pointed to the big screen and said: "You are all industry professionals, you should be able to see at a glance the picture I just played, these times, there was no fire at the disaster site at all, but the casualties at the scene were more serious than ever." ”

The leaders who were originally watching from the audience in the clouds and fog, but after Yu Lin's reminder at this moment, they understood the meaning of what they wanted to express on the screen.

Yu Lin continued: "Many people can't help but sigh, the fire is not big, why is there such a serious consequence? But in fact, the most lethal fire scene is not the fire, but the billowing smoke.

The smoke we see, its main components are free carbon, distillate particles, condensate droplets of substances with high boiling points, simply put, solid dust, carbon dioxide, carbon monoxide, sulfur dioxide, nitrogen dioxide and hydrocarbons, etc., I believe everyone is familiar with these ingredients. ”

As the leader of the public security department, he naturally deals with these ingredients from time to time, and the ingredients in the smoke are, in the words of ordinary people, poison gas.

In modern buildings, whether it is a home or a hotel, or a shopping mall, people always like to decorate as much as possible, almost all decoration materials, such as plastic wallpaper and chemical fiber flooring, polystyrene foam board and other flammable items, once the chemical decoration materials are burned, they emit a large amount of toxic gases, thick smoke surges along the corridors, and the chimney effect of stairs and elevator shafts rises at a very fast speed and spreads to all floors upstairs.

The smoke in the fire not only prevents people from escaping from the fire, but also causes great harm to the human body.

That's why Yu Lin said that the deadliest thing was not the fire, but the smoke.

Yu Lin continued to play the video screen, switching to the firefighter rushing into the smoke of the fire with a protective mask, and when he came out, the firefighter's protective mask was already on the faces of the crowd, and the picture was frozen here.

Yu Lin pointed to the firefighter who fell down because he didn't have a protective mask and inhaled too much smoke after carrying the crowd out and put it down, saying: "In the face of the billowing smoke, so far, the only way is to fold eight layers of wet towels to cover your mouth and nose and crawl down from the safety exit to escape, or close the doors and windows and wait for rescue."

Smoke is the real first killer of the fire, when the smoke hits, the time for people to escape is extremely short, folding eight layers of wet towels can only last for a minute, and then inhale from the mouth and nose from the contact smoke, just a few seconds will be poisoned to death, the firefighters on the screen, in order to save the masses in the smoke, took off their protective masks, the masses were saved, and the firefighter died like this.

At this time, as a participant in the scientific research experiment of fire fighting equipment, what should we do? ”

This is a paragraph of the explanation is very heavy, the leaders under the stage are extremely moved, the sacrifice of firefighters is the pain of the whole society, and they always take the trouble to publicize fire prevention knowledge to the masses, but the reality is so cruel, in the face of the people waiting for rescue at the scene of the accident, firefighters have no right to refuse the task of knowing that there will be danger to their lives, and even regardless of whether they can breathe, take off the protective mask to the people they want to protect.

When the younger firefighters saw this, they thought of their former comrades-in-arms and secretly wiped away their tears.

A puff of smoke suddenly rose from the stage, and soon spread from the stage to the audience, and the leaders in the front row were already within the range of the smoke, but no one stood up in a panic and ran for their lives.

At this time, in the speakers around the big conference hall, Yu Lin's broadcast voice pretending to be an announcer came: "Please note, it is a fire alarm now, for your personal safety, please do not panic and evacuate in an orderly manner under the guidance of the staff." ”

The leaders in the front row of the audience who were covered in smoke did not panic, but the people in the back row who had not yet come into contact with the smoke began to panic.

They all stood up and wanted to evacuate quickly, but when they saw that the leaders in the front row were sitting still, they didn't dare to leave, so they had to stay in the conference hall and wait for the leader's instructions.

Su Wenruo had already stood up in horror and whispered to Staff Officer Jiang: "Is there a fire on the stage?" Yu Lin is still on it! ”

Staff Officer Jiang glanced at Yu Lin, who was still active in the smoke on the stage, shook his head and said, "You sit down, this is an exercise." ”

Staff Officer Jiang was right, the leaders of the front row sat there without moving, but in fact, they had already discerned from the air that it was not real smoke, but simulated smoke made of dry ice, and this was just an exercise made by Yu Lin.

So today, Yu Lin's theme is how to overcome the smoke at the fire scene?

This is simply an insurmountable problem, and there is no solution!

Su Wenruo turned his head and asked Staff Officer Jiang, "What do you think Yu Lin wants to do?" ”

Staff Officer Jiang stared at the stage very intently, the expectation in his eyes had reached an unprecedented height, and a serious voice said to her: "Wait and see!" ”

When Su Wenruo just turned his gaze from Staff Officer Jiang to the stage, in just three or four seconds, the thick smoke that spread down from the stage instantly retracted to the stage, and from the original large area of smoke, it was now rolling and shrinking rapidly like a cloud.

Su Wenruo, who was sitting in the back row, saw that his vision on the stage was getting clearer and clearer, and the smoke was rapidly shrinking from tumbling to disappearing at a blink of an eye, and it seemed that there had never been smoke in the entire conference hall.

And at some point, Yu Lin put a one-kilogram mobile sprayer on the podium, and heard him turn on the microphone and say: "Thank you for your indifference to my broadcast warning just now!" ”

The people in the audience were simply surprised where the smoke went, and when they heard Yu Lin's words, they couldn't help but burst into laughter, because just now, if they hadn't seen the leaders in the front row not moving, it is estimated that the people in the back row would have run out long ago.

In the face of an urgent disaster, it is a human survival instinct to flee the scene, not to mention the broadcast like a-stirring stick in Yu Lin.

Yu Lin held the sprayer on the podium on his left hand, pointed to a palm-sized black box under the water pressure of the sprayer with his right hand, and said, "The smoke you saw with your own eyes just now has disappeared, and it is in this black box, let me explain it from the beginning."

This unsightly black box is not a black box, it is just a device that can separate and remove a variety of pollutants from the air, the structure inside the black box is divided into many layers, and the most important thing is that activated carbon is wrapped in crystal gypsum, these two materials should be familiar to you.

Activated carbon is a porous carbon-containing substance, its developed pore structure makes it have a large surface area, it is easy to fully contact with the toxic and harmful gases in the air, and the strong adsorption force field around the carbon pores will immediately suck the toxic gas molecules into the pores, which has a strong adsorption capacity, and achieves the purpose of removing gaseous pollutants through physical adsorption.

The structure of the innermost crystalline gypsum is pure natural gypsum ore, the main component is calcium sulfate dihydrate, and it is also a natural source of negative ion dispersion, which can volatilize negative ions called air vitamins.

For the smoke detector above the sprayer to sense the smoke, the smoke particles are captured through the active and passive hybrid and direct interception by the rapid adsorption capacity, and the smoke particles are instantly decomposed and transformed into various air pollutants, so that the smoke disappears invisibly. ”