It stands to reason that snowmen should only appear in snowy areas. But how can it be here? I couldn't help but have a lot of doubts in my mind, and at the same time conveyed my doubts to the big man.

The big man said to me, "It's not unusual, there are times when snowmen come down the mountain to feed." Anyway, it's better to be careful. This Himalayan snow monster is elusive, and it may appear somewhere. As soon as they appear, everywhere they go, they will be disabled. And they're so fast, you've just seen it. So, be sure to be vigilant. ”

The big guy was very pertinent, and we became unusually cautious. Several people did not dare to stop any longer, but immediately set off to continue walking. However, the difference this time is that each of us is armed and ready to defend at any time. You can tell from the subtle movements that each of us is nervous. I glanced at it in a hurry, and almost everyone's fingers never left the trigger.

In order to prevent this from happening, I deliberately insured Lisa's gun. Otherwise, if she gets nervous, she doesn't know who will suffer. But to be on the safe side, I arranged for Lisa and Duoduo to walk between us. In the front are the big man and the senior, then the old ghost in the back, Duoduo and Lisa in the middle, and me and Qian Cheng in the back. There is only one purpose in this arrangement, just in case the elusive snowman suddenly rushes out and hurts people.

We kept going up the hill, and the road was overgrown with weeds and extremely difficult to walk. At first, you can still see the mountain road at low altitudes. However, as the altitude increases, the mountain road gradually becomes lighter and lighter. By the end of the walk, we could barely find the trail. Along the way, only the open road is now walking up. If it weren't for the old man who had a picture in his hand. With the big man's determined guidance, we really have some doubts about whether we have lost our way.

The topography of the Himalayas is really special: some places are so flat that we walk as if we were walking on flat ground; However, in some places, it is steep and dangerous, as long as one is not careful, it is possible to fall off the cliff and break bones!

This phenomenon reminds me of a report I once read: it was reported. The Himalayas are not the highest yet, they are still rising!

As the mid-ocean ridge in the Indian Ocean expands, the Indian plate squeezes into the Eurasian plate, which causes the edge of the Eurasian plate to rise, known as the Himalayas. At the moment, this movement is still continuing. According to scientists' precise measurements, the world's tallest mountain, Mount Everest, is still rising at a rate of 0.centimeters per year.

Similarly, geological expeditions have confirmed that as early as 2 billion years ago, the vast area of the present-day Himalayas was a vast ocean, called the "ancient Mediterranean". It has gone through a long geological period. It lasted until the end of the Early Tertiary Period of the Cenozoic Era, 30 million years ago.

At that time, the general trend of crustal movement in this region was a continuous decline. During the descent, the basin was filled with marine sedimentary rock layers more than 30,000 meters thick. By the end of the Early Tertiary period, there was a strong orogeny in the earth's crust, known in geology as the "Himalayan movement".

This orogeny caused the area to gradually uplift and form the most majestic mountain range in the world. Geological expeditions have proved that the tectonic movement of the Himalayas has not yet ended, only after the Quaternary glaciation. It rises another 1300~1500 meters. And, it's still slowly rising.

Such memories. It makes me feel a lot of pressure. Because the higher the altitude, the worse it is for us.

As we get higher in altitude, we feel that breathing becomes more and more difficult. At first, we thought it was because of the long climb and we couldn't get fit. But later it turned out that it was not, it was really caused by lack of oxygen. A few of us were ok. However, Duoduo's face became more and more pale.

I saw Duoduo's symptoms and knew she was suffering from altitude sickness! Such a situation occurs from time to time in mountaineering:

After a person reaches a certain altitude. The body adapts to changes in physical conditions such as air pressure difference, low oxygen content, and dry air due to altitude. The natural physiological reaction is that altitude sickness occurs when the altitude generally reaches about 2,700 meters.

The symptoms of altitude sickness are generally as follows: headache, shortness of breath, chest tightness, anorexia, slight fever, dizziness, fatigue, etc. Some people have different appearances due to low oxygen content: purple lips and fingertips, drowsiness, hyperactivity, and inability to sleep. Some people experience dry air: rough skin, chapped lips, bleeding or blood clots in the nostrils, etc.

Headache is the most common symptom and is often a throbbing pain in the forehead and both temporal regions, which worsens at night or in the morning when you wake up. Increased ventilation of the lungs, such as breathing through the mouth and light activity, may reduce headaches. There may be visual disturbance in severe headaches, but fundus examination is normal.

Gastrointestinal symptoms such as dyspepsia, loss of appetite, bloating, nausea, vomiting, and even abdominal pain may occur.

The Tibetan Plateau is known as the "Roof of the World". The air on the plateau is thin and there is less oxygen, which greatly affects the normal breathing of human beings.

Since the density of the air decreases with altitude, that is, the higher you go, the lower the air pressure.

At this time, I tried to think about the coping methods I had learned in my head to see if I could use them. In general, the solutions to altitude sickness are:

1. Rest and rest is an important treatment measure, excessive activity can increase oxygen consumption, reduce blood oxygen saturation, and aggravate symptoms. Therefore, for mild patients, it is necessary to reduce the amount of activity and take appropriate rest, but for moderate and severe patients, bed rest should be done.

For those who are nervous and psychologically unstable, psychological treatment is needed to relieve worries and fears. Patients with acute altitude sickness can continue to stay at high altitude, but they should be closely observed, and once there is a precursor to acute high-altitude pulmonary edema or cerebral edema, they can be considered to be sent back to a lower altitude, or actively and effectively treated on the spot.

2. Oxygen inhalation is important for the treatment of altitude sickness, but the effect on acute altitude sickness is smaller than expected. Intermittent small amounts of oxygen may delay the process of adaptation at the altitude of the body. Therefore, in principle, light and medium-sized patients should not be inhaled oxygen, but for particularly severe patients, low-flow oxygen can be inhaled at night, generally 1~2L per minute is appropriate.

3. A large number of studies on diuretics have confirmed that the occurrence of this disease is related to water retention in the body, so how to effectively and rationally use diuretics is regarded as an important means to prevent and treat altitude sickness.

4. Sedation and analgesia: For those who are nervous, irritable, and tachycardia, sedatives can be used as appropriate. (To be continued......)