"Acai sister, I told my sister, and then she will help you look at Chen Bin."Chen Cailing said to Ah Cai that after the two people came out of the camp, they were ready to take the car back outside.

"Huh?"Why look at him?”He did not know what he meant by Chen Cailing.

“Aren’t you worried about that shaman?”Chen Cailing asked, the last time the two sent them into the camp, she has been helping Ah Cai care about this matter, it is rare to have the opportunity to come and see Chen Ting, so quickly instructed Chen Ting to pay more attention to the relationship between Chen Bin and Guo Lingling in the camp.

"Saying no worries is false, but worrying seems to be unnecessary," thought Acai, "the foundation of love is trust."

"We are not really worried about Chen Bin, afraid of people Guo Lingling is very active, but I and my sister inquired, that Guo Lingling did not seem to stick to Chen Bin, the two people between the intersection is very little."

“Yes?”He smiled, and there was a lot of loss.

“It will be a long time before they come back from this training and going to the poles, and I really hope that they can go with me,” A Cai said. “Sometimes it feels better to live in the detention center.”

"No, sometimes I really want to go back."Chen Cailing nodded her head.

"But there is no future there," sighed Acao, "there is no double law in the world."

When the two girls got back in the car, the training subjects in the camp were about to begin.

The person who came to explain theoretical knowledge to the people in the camp was indeed Professor Xia Yunli, and Chen Bin and Dafei were already familiar with the polar research expert, but most of the others dealt with him for the first time.

“Polar science includes a wide range of disciplines such as ice and snow, geology, geophysics, ocean hydrology, meteorology, chemistry, biology and the environment.”Xia Yunli told the students, “The land in the Arctic Circle is almost frozen all year round, and there are only two seasons in the year: long winters and short summers.The winter season is sometimes all night, which is what we call the polar night, and in summer it is 24 hours a day."

“In addition to glaciers and frozen seas, summer temperatures in the Arctic can reach more than zero or even about ten degrees in the Arctic, and in winter they will be reduced to more than minus 50 degrees, and in eastern Siberia, there have been low temperatures of minus 69 degrees.”

"There will be hurricanes in the polar regions in the autumn and winter, which will raise the snow by 30 meters, and we will look like a snowstorm, but in fact there is no snow."In the case of low temperature, the wind will have a significant condensation effect.What is the condensing effect?I will explain to you, for example, when the wind speed per hour is 32 kilometers per hour, it will make the temperature equivalent to minus 30 degrees, and if the wind speed reaches 64 kilometers per hour, it is equivalent to the cold of minus 40 degrees.The lower the temperature, the more obvious the actual decline.”

“At the beginning of the training course, I was just trying to let you know that going to the poles is a dangerous thing, especially if you will live there for months.Maybe someone would have thought it was more like a trip, and if someone thought so, I wanted to say you were wrong."

"When the blizzard comes, migration is the most irrational choice, and it is very difficult to distinguish the direction in the vast ice and tundra areas.Melting ice water in the summer can cause many swamps in the tundra area, and the ice in the sea will become semi-melted, which is quite dangerous.”

“There are also flies in the polar regions, especially in summer, when black flies, deer flies and water flying insects can be very disgusting, and their larvae live in the water, so when we go out, set up tents, make temporary rest, and avoid getting too close to the water.”

“There are many mountain ranges in Alaska, Greenland, Iceland, Spitsbergen, and a few other islands where iceberg cliffs, ice breaks and frequent avalanches can pose a great danger.And there are still months to go by, with thick fog along the Arctic coastline, sometimes extending inland, increasing the difficulty of discerning our direction.”

“After coming to the polar regions, we cannot rely on the needle.When going out, use the constellation to confirm the orientation at night, and during the day, you can use the "Densing method", which I will explain later."

"The city of Longyear is in the Isfjord, the location of the sea, if we are faced to be in the ice, we must pay attention not to walk on the floating ice or away from the land signs, because this will cause us to lose our way, large chunks of floating ice often drift, the position will change, and the floating ice will break."If we have to walk through the floating ice, we should jump quickly, and the landing point should not be less than 60 cm from the edge of the floating ice block.Perhaps we have seen from the film that there are survivors who are rescued from drifting ice, but under normal circumstances, the ice gradually melts when it drifts toward warmer seas, and the real result should be something that everyone should be able to imagine.”

“We want to avoid floating ice as much as possible, most of which is below the surface of the water, and if the ice starts to melt, or when we stand on it, the ice may flip without warning, especially if we stand up and increase the weight of its upper part.”

“Ice cliffs are also dangerous areas, because icebergs can suddenly disintegrating from a large number of huge chunks of ice, which usually weigh thousands of tons, and these ice blocks suddenly break into the sea.”

After explaining the environmental situation of the polar regions, Xia Yunli began to introduce the clothes suitable for wearing in the polar regions.

“The poles are cold, and severe cold and gale can freeze the body exposed to humans in a few minutes.We want to protect the whole body, hands and feet, and wear a hood to protect the face.What I would recommend here is a hood with fur-side ornaments, as they prevent the water vapor brought out of the breath from condensing in the face and from frostbite the skin.”

"The coat should be windproof, and the fabric should be as good as possible to prevent the snow from sticking to it.We cannot use waterproof materials, because it is not easy to make water vapor emanate, and the coat of leather goods is the most ideal for condensation in the clothes.”

“Danger in a cold climate!”When the knowledge told involves this aspect, Xia Yunli's tone is also much worse.

"The first is hypothermia, hypothermia refers to the body's internal heat is less than the body's heat, resulting in body temperature below normal value."This is due to lack of physical weakness, underdressing, inadequate food intake and lack of knowledge and preparation for low temperatures.”

“Although hypothermia occurs in any low temperature environment, most of the places that can easily lead to hypothermia are located in the polar regions we are about to go.”Under the severe cold, this is almost a common disease, and the physically poor are especially concerned.”

"I say signs and symptoms of hypothermia: first, the behavior becomes irritable, then sleepy after a while, the reaction begins to be slow, for some problems can not cope, there may be inexpressive tremors and incongerability of action."Severe people feel headaches, blurred vision, abdominal pain or even unconsciousness.”

“What should we do in this situation?First of all, we must prevent the body's heat from being further distributed, and we must hide in the room to avoid the wind.Do not let the patient lie on the ground, you have to take warm measures, such as warm with warm items to warm the patient.When the patient is awake, let him drink a hot drink and eat sugary food.”

"When the body temperature is aggravated, the body is unable to heat itself again, so it must be heated from the body.If rapid in vitro heating will cause low temperature blood to flow into the body, further aggravating the disease.We can place the heat in these parts of the patient's body: the back, the stomach, the armpit, the back of the neck, the wrist, the den, where the blood flow is close to the body surface and can carry heat into the body.”

Xia Yunli said, while pointing out the corresponding position on his body with his hand, he then stressed, "Do not take alcohol, some people may feel that drinking in cold days can make the body heat up faster, but in this case, the alcohol will only make the body's surface blood vessels open, and the heat in the body will lose more quickly."

"There are frostbite cases, frostbite is also divided into preliminary frostbite, deep frostbite and serious frostbite, this part of the knowledge I also put in the back to talk about."Here I want to talk about the "snow blind" this symptom, snow blindness is a form of vision short-lived disappearance, which is caused by the intensity of the sun's rays is too high, too concentrated, in fact, usually through the ground ice and snow reflection or the ice crystal reflection on the clouds, normal people will not always stare at the sun to see.“

"After we arrived at the poles, we should try to wear a blindfold to prevent eye exposure, if there are symptoms of blindness, we can change to a dark place, and use a cold wet cloth to relieve the pain of the forehead, a good environment can cure snow blindness in time."

“Today’s polar science is explained here, and the next course is polar survival skills, and although we spend most of our time in camps after we go to Spitsbergen, we may need to go outside to carry out some activities, so it is necessary to understand and master some survival skills.”Xia Yunli stood on the stage, he saw a few familiar faces among the people below, he smiled at Chen Bin and Da Fei, and continued, "From tomorrow, there will be a special person in the camp to carry out targeted physical training for everyone, I hope everyone will actively participate in, before going to the polar regions, let the body get further exercise."

"Professor Xia is a profession," said Da Fei, feeling from his heart, "although we have been to Spitsbergen Island once, but we have almost no understanding of what he has just said."

"It is better to read ten thousand books than to walk a thousand miles, and this ten thousand miles must be brought by those who are familiar with the road."Chen Bin also nodded his head and echoed the road.