Zheng Guo stabbed hard. Pen, fun, and www.biquge.info

Clang!

I felt a tingling in the tiger's mouth.

The blade didn't penetrate it!

Not only did it not penetrate, but it did not even penetrate the tip of the knife.

How sharp the Heavenly Evil Sword is, the audience has already learned it when they fought the giant beast.

Not to mention that iron is like clay, but it is still okay to cut stones.

This thing is harder than stone, what kind of structure is it?

Listen to sounds like ......

"Uh, it's not a stone?"

"It doesn't sound like metal, it's like metal."

"Is this a metal deposit?"

"Huh? It's not about craters. ”

"It's not impossible for a meteorite to hit a metal mine."

……

There was a lot of discussion in the live broadcast room.

Zheng Guo frowned, walked over, and lightly touched it with the blade.

Bell, bell, bell.

Undoubtedly, it is the sound of metal colliding.

Zheng Guo stuck the Heavenly Evil Knife aside, bent down, grabbed the bulges on both sides of the thing with both hands, and lifted it vigorously.

About one-third of its volume was buried under the sediment, and when Zheng Guo lifted it, he brought up a piece of sand and spread it in the clear water.

Surprisingly heavy.

"At least seventy or eighty kilograms!"

There was an uproar in the live broadcast room.

Seventy or eighty kilograms, which is equivalent to the standard weight of an adult with a height of 1.8 meters.

This density, it seems, is metal.

Zheng Guo exerted his arm and threw it directly to the shore, then picked up the Heavenly Evil Knife and went ashore.

The camera gives a close-up of the piece of metal.

The surface is a dull grayish-black color, pitted, much like corroded stone.

Zheng Guo squatted next to him and observed for a while, and thought of a possibility, so he said to the camera: "This may be a piece of meteoric iron." ”

Many viewers didn't react to this word for a while.

What iron?

"Meteorite. It can be understood as an iron meteorite. ”

Zheng Guo straightened up and further explained: "So far, the meteorites discovered by human beings can be roughly divided into three categories, which can be divided into meteorite, stone meteorite, and meteorite according to their different compositions. ”

"The most common are stony meteorites, which are mainly silicate in composition. Speaking of which, stony meteorites are actually no different from ordinary rocks that can be found everywhere on the planet, but they are just crowned with the title of an alien object. ”

"As for meteoric iron, as the name suggests, it has a lot of iron inside, generally more than 95%, and the iron content is quite high, almost called pure iron. It also generally contains a few percent nickel. ”

"As for meteorite, it refers to meteorites with almost half iron and half of silicate, which is relatively rare."

Zheng Guo touched the meteorite with the tip of his knife and continued: "This is obviously meteoric iron. To be precise, it should be the fragments left behind after the meteorite explosion. ”

Only then did the audience understand what he meant.

It turned out to be a crater.

Zheng Guo stared at the fragments of meteorite iron for a while, and suddenly a flash of inspiration flashed forward, raised the Heavenly Evil Knife, and slashed towards the meteoric iron.

He didn't face the split, but slightly sideways, letting the blade rub against the surface of the meteorite.

Zheng!

There was a shudder.

Sparks sparked between the blade and the meteoric iron.

Zheng Guo nodded with satisfaction.

"Do you know what is the oldest way for humans to make fire?" He asked.

A barrage floated by, and most of them were saying "drilling wood to make fire".

Zheng Guo shook his head and said, "This is just one of the theories, and there is another theory that is to strike the fire." In ancient times, when humans were hunting, they used stones as weapons to hit their prey, and after the stones flew out, they collided with the flint, causing sparks and accidentally igniting the dead wood next to them. So according to this phenomenon, human beings have mastered the method of striking fire. ”

"In fact, to put it bluntly, it is the same as drilling wood for fire, it is the use of friction to generate heat, but it is much easier to hit the fire than to drill wood for fire. This kind of meteoric iron, which is more likely to produce sparks than stones, is obviously very suitable for striking fire. However, this piece is too big and inconvenient to carry. ”

Zheng Guo went into the water again, found a fist-sized piece of meteoric iron, and put it in his pocket.

He looked excited.

The audience was a little puzzled.

Is it necessary to be so happy? It's not food.

Isn't the tinder already preserved? What else are you doing with this?

In fact, Zheng Guo didn't want to use it himself, but planned to teach it to the crocodile people.

It is still too difficult for them to drill wood for fire at this stage, and it is almost impossible to teach them to drill wood for fire in ten days and a half months.

During the barbecue last night, Zheng Guo knew that the crocodile people had learned to use the tools they were making, so it would not be difficult for them to use the impact of meteorite iron and stones to generate sparks.

Just make them aware of the connection between impact and flame, and you're teaching them to make fire!

Educating a race to use fire would mean a lot to them, and it could take them a big step forward in their evolution.

This kind of thing is usually done by legendary gods......

Zheng Guo caught a relatively large "winged crab" (the name given to this creature by sailors) and stripped off the shell.

Then cut off a vine, peel off the outer skin, and use it as a rope to tie the two winged crabs together and tie them around their waists.

The food was enough for him to eat two or three meals.

He didn't plan to bring more, it was inconvenient, and it was not easy to save it.

The humid air on this island is easy to breed bacteria, and this meat is not suitable for smoking, so it is better to eat it as you go.

Anyway, this waterhole is so big, they can't run, they can come whenever they want.

There are enough winged crabs here to feed him for three or four days.

This is tantamount to finding a more stable source of food.

Looking up at the sky, it was already bright, and I couldn't waste any more time here.

Zheng Guo chose a vine of the right thickness, dragged it down a few times, and after making sure that it was strong, he planned to climb out along it.

Everything went well at first, and soon it was halfway up the climb.

It was inconvenient to climb up with the knife in his hand, so Zheng Guo stopped, shook the knife with one hand, and threw the knife up.

I was about to continue climbing, when suddenly my right hand touched something, and something didn't feel right.

The touch seems to be a twig.

But how can there be branches in such a place.

Zheng Guo opened the vines in front of him and looked at it.

A white skeleton appeared in front of him!

The skeleton was mutilated, tangled with vines, and it was impossible to see what it looked like.

Zheng Guo suddenly felt a throbbing, and instinctively sensed that danger was approaching.

Seeing the bones that suddenly appeared, the audience also gasped.

"How can there be bones in a place like this?"

"Judging by the beak-like protrusion on the skull and bony wings on one side of the body, this should be a bird."

"Well, it's about the size of a half-sized chicken."

"Did you fly here and get tangled in vines?"

"That's stupid."

……

Zheng Guo could see clearly that the skeleton was broken in many places, and there seemed to be traces of biting, it should not be simply entangled and died, it was attacked to death.

At this moment, there was a rustling sound from nowhere, as if something was crawling between the vines.

Zheng Guo held his breath and stared at the six roads.

Rustle -

Right!

Zheng Guo's pupils shrank suddenly, and he saw a green shadow pounce on him suddenly.

Sa!

Four sharp teeth aimed at his neck.