Under the moonlight, the earth is only black and white.

The fine sand reflected the moonlight, and the desert surface was slightly white, except for a black speck that appeared abruptly on the silver carpet.

The huge camel bent its long neck and bowed its head to drink, and the inky black water rippled with layers of dark colors.

Bi Fang squatted on one knee, reached out and dipped some water, put it in front of his nose and sniffed it, flicked his fingers, shook off the water stains, and rubbed dry on the sand.

"There is no odor, it should be a normal water source."

Today is not a full moon, and visibility is limited, so Bi Fang cannot judge the purity of the water source by his eyes, but only by his sense of smell.

"All the oasis water sources in the desert are living water, stagnant water cannot exist here for a long time, it has the highest water vapor evaporation rate in the world, a glass of 100 ml of water in the most ordinary glass, can evaporate in a few minutes."

"However, even living water is not to be taken lightly, as the desert is home to a large herd of wild camels that often defecate in the water."

"Especially on fixed routes, hundreds of camels drink and rest every day, and they even dye the water black."

"Camels are naturally fine when they drink this kind of water, but people don't have such a physique, and they can't bear such a water source."

"There is no peculiar smell, and the dangerous creatures in the vicinity are eliminated, and it is likely to be a normal water source."

[Okay, I've found water!] 】

[Fang Shen will also look at Yile, if you really find a water source, you have to look at my alpha]

[Are you polite?] 】

Bi Fang stood up, probed the bushes with his stick to avoid any poisonous insects, snakes and scorpions hiding inside, and then began to break the dead branches and prepare to make a fire to boil water.

This oasis is long and narrow, looking like a banana from above, with a total area of about a football field, not too small and not too large, surrounded by a narrow belt of greenery less than three meters wide.

Bi Fang went around most of the circle to collect enough firewood.

These dead plants lose their ability to draw water, and in contrast to the humid climate of the rainforest, they will completely lose their body water after spending a day in the desert, becoming a firewood that can be easily ignited, which is one of the few conveniences in the desert.

Bi Fang took out two flints from his backpack, rubbed them with one hand, and a few sparks floated on the dry branches, repeating them several times, and soon a circle of orange light ignited in the darkness.

The flame of light dispelled the cold and darkness, and Bi Fang picked out a thicker branch and carried it to the waterhole.

The water surface clearly reflects the firelight, but the color of the water is still invisible.

Bi Fang gave up on this idea and continued to boil water.

"If you don't find a direct source of water in the desert, but only green plants, you can also put a plastic bag directly on the green plants and wait for the transpiration during the day, plus the temperature difference between day and night, to distill to get a clean water source."

"In ancient times, it was said that grain would not be transported for thousands of miles, which means that the grain transported for a thousand miles is no longer enough for mules, horses and escorts."

"It makes no sense to sweat 40 pounds of sweat with 50 pounds of water on your back, and you should balance the weight reasonably according to your physiological condition and distance. Generally speaking, 4000 ml in the desert will do. ”

"Well, I have alpha, and it's okay to triple the water resources on my back, but it's the containers that limit us."

"The requirements for filling water are relatively high, and they must also be able to store properly, and the best thing is actually the stomach bag of the animal, or the craftsmanship is a little higher, and their skin can be used."

Bi Fang rummaged through his backpack and took out a few dead rattlesnakes, which he had encountered on the road these days, some of which had been eaten, leaving only the snakeskin and snake stomach, which had become excellent water storage materials at this time.

"Although rattlesnakes are not very large, their stomachs are extremely expandable, a snake can hold two liters of water without any problems, and it is like a balloon, as long as it ties a knot at the end, it will not leak."

Bi Fang put the snakes on his arms one by one, took them to the pond, and began to clean and make them.

Four snakes, plus a kettle, can bring nearly 10,000 milliliters of water, save a little to drink, and can last a week.

"Don't sleep too close to the water source at night, it's easy to run into other animals, and we can come back tomorrow."

After taking a little water, Bi Fang did not choose to stay here to survive the whole night, but led the well-drunk Alpha to the southwest, and did not deliberately find shelter, dug a pit, and paid attention to dealing with it all night.

Waiting until the next morning, Bi Fang came to the waterhole again, continued to boil water, looked at the surrounding environment, even watered and bathed, washed his clothes, washed the heat all over his body, and then looked for suitable plants near the oasis and weaved a soft basket.

Alpha gnawed on the sprouts in the oasis, his mouth crooked, filling the loss of these days, and even urinated on a rare occasion, which was so thick that it looked like pus, although it was a bit heavy, but it still amazed many viewers.

[In other words, Fang Shen is not pretending to be too much, I feel like I'm going to explode]

[This milky yellow color makes me a little bit of a bad association (dog head)]

[If you think of something, speak up!] 】

[Too avant-garde]

[We old-fashioned people can't see this]

[Won't it really explode? ] 】

Baskets woven from branches are hung on both sides of the camel, and Bi Fang puts the bulging snake stomach bags into it, like a large milky white balloon filled with water, and you can clearly see the water flowing inside through the surface, which makes people worry about whether it is too much.

"Don't worry, the snake stomach belt is very expansive, and I specially weaved a soft basket, which is not easy to break."

Bi Fang pinched the baskets on both sides of the camel, all of which were woven from long leaves, not so much as a frame, but more like a hollowed-out bag, holding the water bag firmly.

After doing this, Bi Fang looked back at Alpha and saw that it was still grazing in the bushes.

[Absolutely starving]

[Anyway, Alpha hasn't eaten for a long time (dog head)]

[I have eaten some, in fact, Lao Fang has not encountered any plants, didn't you encounter two trees last time? ] It's just that I don't feel like I'm full.]

[The poor child's hump is deflated a lot]

An adult healthy camel can go without food or drink for 15-30 days without food or drink if it is full of food and drink.

Under normal circumstances, a camel can eat about 13 kilograms of dry food and drink about 10 liters of water in one meal.

In extreme cases, such as returning from the desert, you can eat at least 30 kilograms of food and drink up to 120 liters of water at a time.

They eat and drink more food and water each day than their bodies need, which is actually a reserve, a sign that the hump is full and upright.

Eating and drinking a lot laid the foundation for the camel's ability to tolerate hunger and thirst in the future.

has been following Bi Fang for so long, just like the audience said, the hump is indeed not as swollen as it was at the beginning, it looks a little shy, and the peaks are a little soft, of course, it may also be because of sitting for a long time.

The fat in the hump also needed to be replenished, so Bi Fang decided to wait a day, if necessary, or even two days, and wait until tomorrow to get Alpha back to peak as much as possible.

"There's still a lot of time, let's see if there's any food to collect."

There are a few doom palms in the oasis, and perhaps some fruit can be found.

The waterhole can also be used to look for the presence of fish for further supplementation.

"Fish cannot survive without water, and water happens to be the most scarce resource in the desert, so many people may think that there are no fish in the desert."

"But the desert is not completely lifeless, there are usually oases in the desert, and there may be fish in the water of the oasis, especially in the desert with many underground rivers, such as crucian carp and grass carp in the oases of the Taklamakan Desert in China."

"In addition to the oasis accident, dark rivers, lakes and caves in the desert are all possible."

[Oasis, lake, dark river, isn't this a thing (shivering)]

【Bold!】 Licentious! Are you questioning Fang Shen! , Dog's Head Saves Life]

[Our gods can't be wrong!] 】

"There's still a difference." Bi Fang touched his head and smiled, "Under normal circumstances, a lake in the desert is an oasis, but there are exceptions. ”

"There is a desert with an area of 1,500 square kilometers in the state of Niulanhão in northeastern Pakistan, which is known as the Thousand Lakes Desert."

"Brazil has a predominantly tropical rainforest climate, which everyone should know, so it is indeed rare to have a desert, and the formation of this desert actually has a lot to do with the tropical rainforest climate."

"Because of the rainfall in Brazil, its two main rivers often flood seasonally, and the overflowing water carries a lot of sediment into the Atlantic Ocean, forming a large number of yellow sand dunes at the mouth of the sea. These yellow sand dunes are blown inland by the influence of the trade winds blowing from the sea, forming deserts. ”

[Good guy, it belongs to the extremes of things, and it must be reversed]

[Strange geographical knowledge increased]

Bi Fang broke off a branch from a tree and made a fishing line and hook.

"After the formation of the desert, because the average annual precipitation here is as high as 1,600 mm, once the rainy season comes, large and small lakes will form in this desert, so it has the name Thousand Lakes Desert, but it is not an oasis, because this lake is not stable, and the ecology of the oasis is stable."

"The dry lake desert is the same as the river, so there is a lot of fish, and there is an achievement that has the most fish in the world."

Bi Fang processed a small section of elastic branches, made a hook structure, stuffed it into a small section of pipe, tied it to the fishing line, and threw it into the lake.

"The second is the dark river, the dark river of the desert forms a variety of things, there is a lot of rain itself, but it can't be stored, and it goes underground, and it also completely dries up, but because the temperature difference between day and night in the desert is large, the water vapor in the air will be saturated at night and condense through the surface of the desert into the ground, and after the accumulation of perennial years, it will form flowing groundwater under the ground in some desert areas."

"The desert river has no entrance, but it does have an outlet, and it is connected to other water systems so that fish from other water systems can enter it."

"However, when they enter the dark river, there is no light, so these fish tend to lose their eyes and become blind."

"The Tuagrave people in the Sahara Desert live entirely in the desert, and as human beings, they naturally need water and food, and the main source of water is the dark river, and the food is the fish in the dark river."

"Living in the desert for a long time, the Tuagravean people were able to find the river accurately, and the next step was to dig it, and when the water was exposed, they would hook it with insects to fish."

[Another miracle race]

[There are Sherpas in Everest, what are the people who are diving, and there are Maasai people, everyone is human, why are they so hanging]

[But Fang Shen is better than all of them! ] 】

[Understood, Fang Shen is the ultimate creature!]

】

[I have long suspected that Lao Fang is not a human (funny)]

"Finally, there are caves, and in the desert there are naturally formed caves in addition to dark rivers, oases, and lakes, and some of these caves have water, and in these caves there are also fish."

"Death Valley is an arid, uninhabited region with a 130-meter-deep cave in the Mojave Desert that was found to contain fish, less than 5 centimeters in length and about 300 in number, which scientists later named the medaka fish."

"There's not much to say about the oasis, because the oasis itself is a complete little ecology, and there are no vertebrates in the water, as well as aquatic plants."

"It's just that most of the fish in the above terrain are not large, because in most of the above environments, the abundance of food is very poor, and it is not possible to feed large fish, and these small fish rely on their small size and low energy demand to survive."

"That's why we don't need a good fishing rod, just a branch."

As he spoke, Bi Fang pulled up the branch, and a small fish no bigger than a palm hung on it, constantly flapping its tail.

"Tilapia, the most common fish in the Sahara Desert, seems to be well underground."

[Hey, there's a fish!] 】

[Fishing in the desert, there is a hand]

[It's you who pay it back]

【Do fish in the desert taste better?】 】

[No, it will be more expensive]

Bi Fang plucked it, put it in Lou Kuangli, hung the fruit on the hook, and continued to throw it into the pool.

Waiting for the afternoon, Alpha stopped eating, and Bi Fang also gained a lot and ate a big meal of grilled fish in the evening.

The next day, Alpha continued to eat, chewing monotonously with a big mouth, as if he would never get tired, like a relentless grazing machine.

Bi Fang touched the hump of Alpha and found that he had basically recovered most of it, which showed that he had almost stayed.

Filling the kettle with water at the end, Bi Fang pulled away the alpha who was still eating, mounted his back, and continued to move forward.

Under his feet is the vast desert, and above his head is the vast blue sky without a trace of variegation, and the sky and the vast desert are combined into a line on the distant margin.

Mali has become the background, maybe tomorrow, or the day after tomorrow, and they will be able to reach the next country.