The lake ice was also covered with snow, but it was not too thick and only submerged to his calf.

Walking on the surface of the river, Ye Xuan even jumped a few times, which was to test the strength of the ice. Sure enough, as he expected, the whole person jumped on it and there was no difference at all from the concrete floor.

"I feel that the ice in this lake is at least 20 centimeters thick, and it is very difficult to carve out an ice cave. I hope I can catch a fish, otherwise I will lose my grandmother's house. ”

Ye Xuan said as he squatted down and swept away the snow in front of him with his hands, revealing the thick and hard ice below.

Holding the dagger and stabbing it into the ice like a stab on steel, the tiger's mouth was shaken to the bitter pain. On the ice, only a small white dot remains.

Seeing this scene, he frowned and said, "The ice is too hard, it is difficult to dig through the ice cave with just a dagger, I have to think of a way." ”

Squatting in place and pondering for a moment, Ye Xuan's eyes suddenly lit up, and he got up and walked quickly towards the birch forest.

Soon, he collected a pile of dried twigs and at the same time tore off a large piece of birch bark and stuffed it into his pocket. Holding the firewood back to his position just now, he smiled at the camera: "My idea is to start a bonfire first, and then use the heat emitted by the bonfire to melt the hardest surface of the ice, and at the same time make the ice below fragile." It's a lot easier to chisel that way, and the campfire keeps me warmer. ”

Glancing at the barrage, Ye Xuan replied: "I saw that some viewers said that these firewoods were buried in the snow, and they would become very humid and could not be ignited. In fact, it's not damp at all, it's very dry. Because in such a cold environment, the moisture in the air will condense into ice in an instant. So the firewood looks like it is stained with snow, but it is actually very dry and can be easily lit. ”

"I'm going to use the bow drill to make fire now, and I've used it many times in the last episode, so I won't introduce it here. Interested new viewers can go to Station AB to watch the live video of the previous issue. ”

As he spoke, Ye Xuan took off his gloves and quickly rubbed his hands a few times, allowing his stiff fingers to regain their flexibility.

In this kind of weather, he must be quick to start a fire, otherwise it will only take a few minutes for his bare hands to become stiff again. So, without wasting the slightest time, he quickly untied the lace of his right foot and used it as a rope to make a bowstring. Then find a slightly bent dead branch and use it as a bow drill.

The cold weather made his hands much less flexible. Under normal circumstances, this series of preparations would have taken only two or three minutes to complete, but now it takes a full ten minutes.

When the preparations were complete, he stepped on the planks and started to light a fire.

As Ye Xuan continued to pull the bowstring back and forth, the drill bit tied to the bowstring rotated rapidly, and in less than a minute, a faint puff of green smoke rose from the groove below.

Seeing smoke coming out, he quickly quickened the movement in his hand. After a while, faint red sparks emerged from the black crumbs.

Seeing that the burning debris was ignited, Ye Xuan immediately stopped the movement in his hand and carefully poured the burning debris in the groove into the prepared birch bark crumbs. After a few gentle breaths, a flash of fire crept into flames, quickly igniting the debris. After adding a few twigs, the fire grew bigger and a bonfire appeared on the ice.

Feeling the constant warmth from the bonfire, Ye Xuan's whole person couldn't help but show an extremely comfortable expression. Leaning his hands against the campfire, he groaned in intoxication, "Ahh ”

Seeing him like this, the audience in the live broadcast room couldn't help but start complaining.

"The expression is too ecstatic. ”

"A fire can bake the feeling of drug use, and I will obey you. ”

"The bonfire burned through the ice, and the patriarch fell into the ice lake, suddenly!"

"Bonfire into my heart, forget about heroin. ”

"Can you please stop being so showy, in the middle of the night, I'm dizzy. ”

"You don't need to make a fire, you can pee through the ice. ”

"Good boy, you're getting started?"

"Why don't you say that a soak of urine can shoot through a steel plate?"

While the campfire melted the ice, he untied his shoelaces from the bowstring and prepared to make a fishing line and hook.

Finding a branch, Ye Xuan used a dagger to cut out a sharp wooden thorn, tied the wooden thorn firmly with a shoelace, and it was done.

"It looks rudimentary, but it works. Now it's just the bait. Lowering his line, he got up again and went into the birch forest to look for bait. Soon, his gaze fell on a dead birch tree.

He stepped forward, peeled the bark with a dagger, and after digging a few times, he found a worm that kept wriggling its body.

Threading the insects on the wooden thorns, Ye Xuan came to the lake with the fishing line. By this time, the ice on the surface had begun to melt, and the icy water made the bonfire smaller.

He waited quietly for a while, until the bonfire was about to go out, and then he removed it from the ice. Then he held a wooden stick in one hand and a dagger in the other, chiseling the ice little by little.

Sure enough, after being burned by the bonfire, the ice became much more fragile. However, it took him more than ten minutes to dig a ten-centimeter-long fishing hole.

After throwing the hook into the fishing hole, Ye Xuan tied the other end of the shoelace to a wooden stick, and the stick was placed horizontally on the fishing hole, so that he could go and build a shelter without worrying about the fish dragging the line away.

Finally, he grabbed some more snow and covered the water of the hole, explaining, "The purpose of this is to prevent the hole from freezing again." I'll see if I get it out in a while, and now I'm going to set up the shelter. ”

Back in the birch forest, Ye Xuan began to think about how to build a shelter. It's definitely not okay to be like that snow cave last night, although you can keep warm, you can't make a fire in it to keep warm. After pondering for a moment, Ye Xuan planned to build an Inuit igloo. This is an igloo in which you can make a fire and keep you warm, so if you want to sleep peacefully, you must have a campfire.

Many people believe that no fire can be lit in an igloo and the temperature in it cannot exceed freezing. Because above freezing, the snow and ice melt. This statement does not hold true in igloos. You know, there are three types of heat transfer, which are radiation, conduction, and convection.

When a fire is lit in an igloo, the temperature emitted by the fire melts the snow and ice on the surface of the igloo. But because ice doesn't transfer heat, it doesn't penetrate. The low temperature of minus 35 degrees Celsius outside the igloo will cause the melting snow inside the igloo to re-condense into a smooth ice shell.

Everyone knows that black is endothermic, which is another way of transmitting heat, radiation. The smooth white crust of the igloo refracts the heat radiation generated by the campfire.

This series of factors is added together to allow the igloo to maintain a high temperature of 0 degrees Celsius on a cold night of minus 50 degrees. This is the crystallization of the wisdom of the Inuit people for tens of thousands of years.

After deciding, Ye Xuan rubbed his hands and said with a smile: "It's about an hour before dark, and I have plenty of time to build an Inuit igloo." Ladies and gentlemen, watch and learn well. ”

The structure of the igloo is not complicated, it can even be said to be very simple, as simple as a child's block game. And it doesn't take much time to waste, in an environment with plenty of snow, it only takes an adult an hour or two to complete the construction of an igloo.

The snow in the birch forest was thick, more than a meter deep, which greatly saved him the time and difficulty of construction.

After making a plan, Ye Xuan first drew a circle with a diameter of two meters in a relatively empty area in the jungle. This circle is the overall area of the igloo.

All the snow in the circle should be cleared. He dug with his hands like a rat until the ground was hard and frozen ground, and after digging, a 1-meter-deep pit was formed.

Climbing out of the snow pit, he found six long wooden sticks, stuck them diagonally in the snow, and formed a semicircular roof frame around the top of the snow pit. Then he took out the dagger and began to cut ice bricks in the snow.

The thick snow was cut into huge ice bricks by Ye Xuan, and they were neatly stacked on the roof.

In fact, there is no need to dig such a deep snow pit to build an igloo, and there is no need for wooden sticks, but it is completely made of ice bricks. He did this mainly to save time.

After the ice bricks are completely stacked, there are still many large and small gaps. Ye Xuan used the snow as cement to firmly block the gap, and finally filled the ice cave with a kettle coat and splashed it on the igloo. The cold wind blew, and the lake quickly condensed into ice, making the igloo extremely strong.

From a distance, the igloo looks like a small slope of snow raised in the snow.

Rubbing his reddened hands and looking at the igloo in front of him, Ye Xuan nodded with satisfaction and said with a smile: "Haha, it's done." Such igloos will definitely allow me to sleep comfortably tonight, and I have to say, the Inuit are really smart. ”

But when I look at it, I always feel that something is wrong.

Finally, he realized that something was wrong, and he forgot to leave a door!

At this moment, the audience in the live broadcast room also discovered this problem, and frantically posted barrage ridicule.

"Poof... I'm sorry, I can't hold it back!"

"Oh, hold the grass, the patriarch is too funny!"

"Grass mud horse, laughing so much that Lao Tzu's prostate fluid is about to come out. ”

"Yes, yes, this is the worst time an Inuit has been hacked. ”

"The Inuit fainted in the toilet crying. ”

"Come, come, tell me how to get in. ”

"I found that the patriarch has a buff bonus in cold weather, and his IQ is reduced by 10086!"

"The IQ of the patriarch is really worrying. ”

"If you don't blow it or black it, I can laugh at this stalk for a year. ”