It was late at night, and it was one o'clock in the morning. Yun Tian turned off his phone, smiled, stood up and stared at the three small tents. In fact, the phone was about to run out of battery, so Yun Tian turned off the phone and began to implement the plan. Unexpectedly, these five people didn't need a fire to sleep at night, and there was no one to guard them, so they didn't seem to be afraid of being attacked at night.

I think they probably thought that there was no need for guards at night, that this place was deserted, how could they be in danger. But Yun Tian felt that they had done something wrong, and it was very likely that they would encounter desert beasts at night. The environment here is very desert-like, and the beasts are fierce.

Even if you rely on your sense, you can't prevent the beast. Sometimes sneaking in, the Divine Sense will not notice. The clouds are not sleeping, who is coming, you can see it with both eyes. Besides, there is also a sober divine sense, and it is difficult to think about it!

Yuntian can be checked on the mobile phone, and the survival standard here is compared according to the desert standard. Although it is not as good as the desert, the conditions are about the same. The day is hot, but the night is unusually cold.

Desert survival is a special topic in wilderness survival training, and experts from the United States, Russia, and China's military are actively studying and discussing it. "Military Climatology" pointed out: "The main characteristics of the desert are dry air, little or no rain all year round, the temperature changes drastically, the daily temperature difference can reach more than 50, and the maximum ground temperature can reach 60~80. Therefore, the basic requirements for desert survival are: bring enough drinking water and learn how to find water, walk at night without moving under the scorching sun, learn the skills of finding food, and master the methods of sending distress signals.

The U.S. Marine Corps, after studying the Sahara and Arabian deserts, the Gobi Desert and the Iranian deserts in North Africa and the Middle East, concluded that in the absence of water, a person can survive about 15.5 days in 18 temperatures, and in 49 temperatures, may survive only one day. The research data of China show that in the hottest summer, the northwest desert of China can survive for 3 days if you rest in a shady place without water, and can only survive for 1~2 days if you walk in the sun. Night walkers walk no more than 100 km without water, and even less in the scorching sun. In the case of low temperatures, it is difficult to get out of 200 km in the desert without water.

To survive in the desert, we must first master the method of finding water, and it is difficult to find water sources in the desert, especially in the eastern and central parts of the Taklamakan Desert in eastern Xinjiang, China. The water sources in the Gurbantunggut, Badain Jarin, Tengger and Mu Us deserts are mostly saline, which is difficult to drink untreated. Personnel entering desert areas should mainly carry enough drinking water to sustain their lives (the total amount of personal belongings should not exceed 15kg, so as not to excessively consume physical strength).

In the case of a lack of water in the desert, the rational consumption of water is extremely important. A "small amount, many drinks" approach should be used. The test proves that if you drink 1000ml of water at a time, 380ml will be excreted by urine, if you drink it 10 times, 80ml each time, and the urine will be excreted by 80~90ml, the water can be fully utilized in the body. Drinking 500~600ml of water every day and night will not bring harm to the human body within 5~6 days.

By following animal tracks in the desert, water can often be found. Or according to the judgment of plants, such as the place where the reed grows, there is generally groundwater below 1~5m, the place where the reed grows densely, the groundwater is only about 1m, the groundwater where the grass grows is about 2m below the surface, the shrubs such as tamarix, usually there is groundwater at a depth of 6~7m below the surface, and the groundwater is about 5~10m from the surface where the poplar forest grows. In addition, herders' abandoned cattle and sheep pens may have water sources, and wherever there are wells, herders will pile rocks nearby as markers. ^

In the desert areas of China, it is usually saline water with more minerals. The inhabitants of the Northwest Desert region boiled a local dry pepper grass with saline water. Although the water treated in this way cannot remove the bitter alkali taste, it can prevent diarrhea, abdominal pain, and bloating after drinking.

In places where there is wet sand or brackish water, in order to obtain drinkable fresh water, a sand pit with a diameter of 1.5 m and a depth of 1 m can be dug and covered with a layer of transparent and clean plastic film, which is pressed with stones or sand around it, and then a small stone is placed in the middle of the plastic film to make it funnel-shaped. Under the tip of this funnel-shaped film, a container of water is placed in advance, and the sunlight passes through the plastic film to evaporate the water vapor in the wet sand pit, and the water vapor meets the plastic film to form water droplets, and drip into the container along the funnel-shaped plastic film. According to experiments, this simple solar distillation method can produce about 1.5 liters of fresh water per day. In the desert in winter, brackish water can be frozen in a container to desalinate it. Fresh water that freezes is drinkable.

Acute dehydration is the greatest threat to people in the desert. About two-thirds of the human body is made up of water. If a person consumes the equivalent of 5 years of body weight, he or she is considered to have reached a critical point of weakening his physical strength. The main cause of acute dehydration in the desert is excessive or insufficient water intake in the body. Water consumption is mainly sweating. In addition, desert heat stroke is a very serious condition with a high mortality rate. It is characterized by a very high body temperature and the patient is in a coma. At this time, the patient should be lifted to a cool place, undressed, and cold water should be poured on the patient, and at the same time, the whole body should be fanned to cool the patient. When the patient is awake, he is given cold saline.

Many parts of the desert are not devoid of vegetation. Wherever there is water, there will be flora and fauna. In 1980, a Chinese scientific expedition team conducted an investigation in the Lop Nur desert area of Xinjiang. Among them, there are members of the team who know the characteristics of biology, so they catch lizards and eat their flesh in a harsh environment where food and water are scarce, eat snakes, drink wild camel milk, and feed themselves on the rhizomes and reed roots of a desert plant. They "drink blood" and show great survivability.

Common animals in the desert include yellow sheep, wild ass, wolf, fox, etc. The easier animals to hunt are hares and various rodents, which are generally found in places with dense vegetation. Hares can be caught with guns or traps, while rodents are mainly caught with traps. In winter, in the sunny semi-fixed sand dunes, you can look for rat holes and prey on hibernating rodents. However, be careful not to hunt in endemic areas.

The edible plants in the desert areas of our country include "S. japonica, S. canopy (also known as hair grass), S. pong (also known as Sand rice), small root garlic, Cistanche, Suoyang, etc. Among them, the yellow, sweet and sour fruits of the jujube tree are the most common in the northwest desert area, the most easily identified, and can be eaten raw.

It must be pointed out that the activities of hunting animals and collecting edible plants can only be carried out under the condition of sufficient drinking water, otherwise the physical exertion will be too great.

The desert landscape is monotonous and often disorienting. In desert areas, due to the action of the wind, the sand dunes are moved, and the roads are not fixed. The road can be identified according to the dung of horses, donkeys and camels on the ground, and the regularity is generally the route traveled by humans and animals. If there is really no way to go, you can follow the footsteps of camels, which have a special sensitivity to water sources in the thirsty desert and can often find them. On the fixed and semi-fixed dunes, the roads are few but relatively straight, and there is not much change. As long as you maintain the general direction of travel, you can keep going. In areas with quicksand, individual sections will be covered, and there will be left and right detour roads, which are generally not very far, and should return to the original direction of travel in time, and do not go straight down the fork road into the road. In desert areas, care should also be taken not to be fooled by mirages.

If you are looking for help in the desert, you can light a fire at a high place at night. Smoke can be burned during the day, and white smoke will be emitted when grass is placed in the fire, and grass is put every ten seconds, and the correct way is 6 times per minute, which is a common distress signal in the world. Signals for help should also be placed with stones or other objects in places that are easily spotted in the air or on the ground. At the same time, use a mirror or other shiny metal object as a signal reflector, and flash in the direction of the sound of the aircraft, even if the sound of the aircraft cannot be heard, it should be flashed in the direction of the horizon every once in a while. This method can reach a distance of more than 10 km in the desert. When spotted by a rescue aircraft, do not leave the spot and wait for rescue.

A successful example of distress in the desert and being adept at using multiple methods of calling for help is the case of the American Verrell and his wife Rona who were rescued in distress in 1959 when they drove their six children to the desert.

Instead of driving on a road that people frequent, the Verrell family took the plunge and stuck on a side road. Their whereabouts were not notified to anyone in advance, and the car was nowhere to be found after 600m. When Verrell tried to make a corner, the car hit a large rock, breaking the water tank and the water began to flow outward. After 16 km, the water in the tank began to boil. The family had neither drinking water nor food at this time. At this time, Rona took a series of measures: let the children rest in the shade of the car, and cut two blankets into strips with her husband to form "SOS" Remove the rearview mirror and put it on the ground, and use the reflection of the sunlight to send a distress signal to the airplane in the air; soak the spare car tires in oil so that they can be ignited at any time as a distress signal, put 4 tire covers on the ground to collect the morning dew; during the day, the husband and the children put lipstick on the lips and blisters on their skin, and bury the children's bodies in the cooler sand, and cover their faces with something, and then bury themselves in the sand, peel off the bark and suck the sap; at noon, when the temperature was high and the skin on the children's faces was torn, the couple wiped the urine collected in the kettle on the children's faces with rags to cool downThey let the children eat a box of non-toxic starch paste to satisfy their hunger, cut the cactus and roast it over the fire, and suck up drops of water to quench their thirst. Three days later, the rescue team spotted their distress signal and they finally managed to escape.