Bai Dalin had no time to talk about it. White plumes of smoke were rising under the ground. More and more soldiers of the sharp knife class and Wu Mian were tired of coping.

    Wu Mian knew that after the surface open fire was suppressed, the lower part was in a relatively closed state and still accumulated a lot of heat.

    Without oxygen, this heat is sufficient to fully pyrolyze the vegetation below, which is manifested in the production of a large amount of smoke and a lot of hydrocarbon gases.

    This is one of the reasons why mountain fires are difficult to extinguish.

    In addition, in the last decade or so, the ecology has indeed been much better. The old forest is rarely visited. While those fallen branches and fallen leaves turn into fertilizer, many of them do not decay in time and become combustibles.

    Suddenly, Wu Mian felt something wrong.

    "The wind has changed!" Stalin''s voice changed tone, roaring with infinite fear.

    To put out a mountain fire, the most afraid thing is the change of wind direction.

    The sharp knife squad for fire fighting will always be in the limelight of the mountain fire, so that the fire spreads downward and they are always above the fire.

    However, the mountainous terrain is complex, the convection is obvious and unpredictable, and the wind direction changes at any time for a small reason.

    Once the wind turns, it means a high probability of sacrifice.

    "Withdraw!" Captain Li judged the situation, made a gesture and roared at the first time. The others quickly packed their bags. Everyone was smoking and burning, just like the monkey who had just run out of the alchemy furnace of the supreme old gentleman.

    "Call headquarters, call headquarters!" Captain Li called headquarters loudly as he retreated.

    "Headquarters received." the voice of headquarters came from the satellite phone, intermittent, and the signal still had some small problems.

    "There are too many embers on the mountain where the 5th team is located. We are ready to retreat. Request shuihong 5 support, request shuihong 5 support!"

    There was no reply on the other side of the phone, and I don''t know if captain Li''s request for help has been received.

    While retreating in a hurry, Captain Li shouted loudly. Hoarse voice, try your best.

    However, the satellite telephone signal was intermittent, and no one was sure whether the headquarters received the front-line information in time.

    Wu Mian squinted around. It should be that with the advent of the day, the temperature increased. In addition, the water sprayed by shuihong 5 and Kunpeng ag-600 evaporated over time, and the mountain fire below has begun to rekindle.

    "Headquarters received!"

    At the critical moment, the voice of the operator came from captain Li''s satellite phone. Everyone breathed out and was paralyzed. If the line was broken at this time, it would be fucked.

    Simply because technology is more and more developed, you can contact the outside world in deep mountains and forests.

    "Hold on for 10 minutes!" Captain Li habitually yelled at the satellite phone twice before hanging up and talking to the team members.

    No one spoke and everyone hurried on.

    "This side!" said Wu Mian, pointing to a direction that was not the way to come.

    Captain Li was stunned, but he didn''t ask why.

    Habitually perform their respective duties. Their duty is to put out the fire and take the whole team back alive. Wu Mian is a guide. As long as he still has his mind, he must be pointing the right way at this time.

    In an instant, the team changed direction and moved forward quickly. Wu Mian added, "there is a stream on that side marked by the map. I didn''t see it just now. It is estimated that it has evaporated. But there is a pool on the mountain to the north of the stream, and I see the reflected sunlight."

    Water source may be the best choice at this time.

    If you stick to it... No one is sure to live. But if you watch the water source and wait for the water to blow 5 to sprinkle, the fire should not be so big, and the water source will be boiled and evaporated in an instant.

    For more than ten hours, the whole team was exhausted. Wu Mian quickly walked to captain Li and grabbed the wind fire extinguisher.

    "No..."

    "I don''t work very much, but I''m still young." Wu Mian explained simply. He was duty bound to say, and carried the wind fire extinguisher on his shoulder.

    28.35kg, heavier than lead clothes, but Wu Mian has adapted.

    This thing is useless on the back. The wind fire extinguisher mainly deals with open fire, not the dark fire.

    So the team only carried a "hair dryer", which is too heavy.

    "Cough, cough ~"

    Someone began to cough.

    The smoke is getting thicker and denser, as if it had been arranged long ago. The smoke is everywhere, as if it is a border, besieging the whole sharp knife squad.

    The team members took out the towel with ashes on their waist, wet it with the water they were reluctant to drink in the kettle, and covered it in their mouth and nose.

    Wu Mian moved a little slowly and handed over a towel.

    "Dr. Wu, yours." Bai Dalin handed Wu Mian his towel and grinned habitually. His face was black and gray, and his snow-white teeth looked dazzling.

    "Dr. Wu, you''re in the middle of the team." Captain Li said at the end. He immediately covered his mouth and nose with a towel and stopped talking. Bai Dalin pulled down Wu Mian''s towel and wet himself with water.

    Wu Mian knows that he is the "masses".

    As long as you rush in with the sharp knife class, your identity is no longer the pride of heaven, no longer a doctor. When you encounter danger, you are not even a guide, but just a "crowd".

    The hidden rules of firefighters are group life safety firefighter life safety property.

    Wu Mian didn''t try to be strong. Although he heard a lot of relevant things, he didn''t have practical experience. He wasn''t even as good as an intern. At this time, the greatest contribution he can make is to do whatever captain Li says and never make trouble.

    But no matter how fast the tired sharp knife team moves, it is always faster than the speed of fireworks.

    Less than 300 meters, Wu Mian couldn''t see the figure of the team members 1 meter away. He had to close his eyes and move forward quickly with the footsteps of the firefighters in front.

    The wet towel covering his mouth and nose blocked the smoke and blocked a lot of oxygen. Wu Mian felt more and more tired and began to have symptoms of hypoxia.

    But the water source should still be hundreds of meters away and need to climb a hill.

    Wu Mian has written regret. He is still too careless and believes in his eyes too much. This is the confidence left by countless successful operations, but now I think of it, I would like to have a look at it myself. At least I can know more information.

    It''s not even as good as an intern. Wu Mian took a hard breath to ensure his body''s oxygen supply. I don''t have time to think about this. I hope I can get to the water source when the open fire burns up; I hope shuihong 5 can arrive in time; I hope... I can live.

    Footsteps gradually messy, lack of oxygen, high temperature, fatigue, lack of water, everything is fatal. When they are together, they become a cold shining dagger against everyone''s neck.