The flames in the mud stove had long since been extinguished, and the twins had seen the fire when they returned, but unfortunately the charcoal ash had not even a trace of residual warmth.

Now, it's time to get back on fire!

"I remember there's a flashlight in my backpack, right?" Zhao Yunxiang asked Han Qianluo, who was on Han Qianluo's back.

"Well, here!" Han Qianluo quickly unzipped and took out a long round flashlight.

This old-fashioned flashlight is made of shiny white iron and has two No. 1 batteries, a convex lens, and an aperture inside.

"Oh, yes, the convex lens of the flashlight can be used to make fire!" Lin Qingxuan was still worried just now, how to make fire, now there is an answer.

I don't know the time because I don't have a clock, but depending on the position of the sun and the level of hunger, it is about 12 o'clock ~ 1:30 o'clock.

During the day, count the scorching sun at this time.

Zhao Yunxiang first took out charcoal powder, which is very flammable, and the charcoal powder is packed in a bottle, which is sealed and will not get wet.

The other bottle contains trivial velvet, which is made of coconut shell tissue, grayish-yellow in color, and contains a lot of grease inside, which is flammable.

"Fire is especially important when it comes to survival, and preserving fire velvet is fundamental to survival, and of course, it would be best if you could preserve the flames. Zhao Yunxiang quickly disassembled the old-fashioned flashlight, removed the convex lens, and the condenser fell off.

"This old-fashioned flashlight is so troublesome, why did the spotlight fall out?" Han Qianluo picked up the spotlight that fell on the beach, this kind of thing was like a mirror, very bright.

"This kind of spotter can also be used to make fire, because it can concentrate light, and the sun not only has brightness, but also heat, and at the same time it can gather heat. Zhao Yunxiang said.

"I remember watching a documentary where in some places where firewood is scarce, the sun is shining and the ultraviolet rays are particularly strong, and people there use smooth metal to make an arc, and the heat reflected by the arc can be used directly to boil water. ”

"I've seen it too, and it's like a desert area, and I thought at the time, how smart the people there are. Lin Qingyu nodded hurriedly and said.

Human beings belong to advanced creatures and have high intelligence, and Zhao Yunxiang felt more than once that human beings may not have been born directly on the earth.

The ancestors of primates cannot be studied, of course, we don't need to worry about this, as long as we live in the present, save resources as much as possible, and protect the ecology.

Let's get started!

Zhao Yunxiang placed the charcoal powder and velvet on a dry leaf, and then used a magnifying glass to start heating the charcoal powder.

Adjust the convex lens as much as possible so that a very bright spot appears, and the smaller the spot, the higher the temperature.

When he was a child, Zhao Yunxiang played with this kind of thing, which was used to burn ants.

How persistent is Lao Zhao?

Ants were once roasted to death with a convex lens, even until they smoked.

After a few minutes......

The small dots of light on the convex lens ignite the charcoal powder, which is easily ignited.

"Whoa......

The sparks from the charcoal powder ignited the velvet, which ignited the dried palm leaf debris, and finally the flame grew larger, burning the twigs and firewood.

Blaze!

When the fire returned, seeing this swaying flower of flame with thick smoke, several people's faces once again bloomed with an aunt-like smile.

With fire, the next step can be carried out!

The python meat brought back was very large, and although it was covered with bamboo leaves and leaves as much as possible, it still couldn't hide the smell of the flies.

This kind of fly, which is only the size of a mung bean, is very sensitive, and the sea breeze on the beach can not take advantage of it.

The most melancholy thing is the visceral fat of the shark!

Because the shark does not have a swim bladder, its liver is ridiculously powerful, and the color of the liver is originally yellow like a yellow peach.

But after drying and destroying the flies, it doesn't look fresh at all, and the color changes from bright yellow to dark yellow.

And this smell, there is a hint of stink.

Sharks have been dissected for only a few hours now, and this type of offal is the most susceptible to spoilage, especially the fat-rich kind.

This is the reason why the decay of carcasses starts from the inside, because the internal organs of all animals contain a large number of bacteria.

When the organism is alive, the bacteria will keep to themselves and achieve a balanced and protective effect.

But once the creature dies, these bacteria are like wild horses that are out of control.

"I remember, you seem to be going to do something with shark guts?" Han Qianluo stared at Zhao Yunxiang and found that this thing was standing in front of the shark guts in a daze.

"The internal organs of sharks contain a lot of fat, and after refining, you can get shark oil, which has a great therapeutic effect on trauma and burns. Zhao Yunxiang squinted at the sea in the distance.

"As the saying goes, if you live by the sea, how can you not get your shoes wet?"

"It's a person walking by the river, how can he not get his shoes wet. Han Qianluo corrected.

"But the entrails of this shark smell weird. Lin Qingyu also stared at the liver that tasted a little oily.

"Wash it, dry it after washing, and try refining it. Zhao Yunxiang said, "We don't have cooking oil yet." ”

"Can you eat shark oil?" Lin Qingxuan asked with wide eyes in surprise.

"Can't ......," Zhao Yunxiang replied softly.

"Then why do you say cooking oil?"

"When I saw the guts of sharks, I just thought of wild boars, and the fat of wild boars can be refined into oil, or the kind that can be coagulated. ”

"This brain circuit!" Han Qianluo smiled, expressing convincing.

Now the job is to smoke the shark and snake meat, and the twins are responsible for cleaning the snake meat they bring back with seawater, then slicing and smoking.

If measures are not taken quickly, the raw meat will spoil before tomorrow, because the temperature and humidity on the desert island will cause the food to spoil in a short time.

Although smoked meat is hard and doesn't taste very fresh, it's better than nothing.

"In other words, we have to refine oil?" Han Qianluo carried the cleaned shark liver, even if it was cleaned, the smell of this liver was still very oily.

"Well, oil refining is urgent. Zhao Yunxiang looked at the container in the shelter, a drum of cooking oil, a stainless steel basin, and an electric pot.

First of all, the electric pot is directly excluded, this thing is brought back is the fate of being disassembled, Lao Zhao only wants the inner tank of the electric pot, those lines below the pot body, all useless, there is no electricity here, only fire!!

The stainless steel basin is also excluded, although this container is a basin, but it is used as a pot, it is a guy who eats!

In the end, it is still possible to use a half-section oil drum half a meter deep!