Ren Xiaoyao saw the knife fly to a huge dirt pit at the bottom of the hill, and hurriedly sent a message to the knife to let him come back, but he didn't see the knife come out of the pit for a long time.

Just when he wanted to walk to the dirt pit, Ren Xiaoyao saw that the ground on the ground that was originally illuminated by the sun suddenly darkened, and when he looked up, he was almost half frightened to death.

A huge black stone stayed on the canopy above his head, and it could fall from the sky at any time, Ren Xiaoyao hurriedly ran to other high places, only to see the huge black stone slowly fall from mid-air in the moment after Ren Xiaoyao left, overpowering the three fruit trees that Ren Xiaoyao was looking at the wind.

Halfway through the run, Ren Xiaoyao heard the sound of trees breaking, and when he looked back, he felt a slight shake, and saw that the huge stone that was originally on the canopy of the tree had crushed the three fruit trees and fell to the place where he was standing before.

Looking at the location where the stone fell, Ren Xiaoyao was sweating profusely, and thought in his heart: Fortunately, he ran fast, otherwise he would have been flattened. Stretched out his hand to wipe the sweat on his head, and looked at the boulder in front of him strangely, very curious where this stone came from? How can it be in heaven.

While observing the stones, Ren Xiaoyao saw a white light flashing on the top of the huge black stone, and a knife-looking ordinary knife flew out, the knife was flying in the sky, and the sun's light was particularly dazzling on the knife.

When the knife flew into Ren Xiaoyao's hand, he looked at it carefully, and Ren Xiaoyao found that this knife was the space universal knife that broke free from his hand just now, and looked up at the huge black stone in the distance, and his brain was stunned, it turned out to be the stone "transported" by his own knife.

But Ren Xiaoyao is very strange, why does the knife "transport" such a strange stone? Looking at the huge stone in the distance, Ren Xiaoyao slowly approached the stone from top to bottom, and walked to the relatively high position next to the stone to observe it carefully.

The stone is black in color, about six or seven meters high in height, about five or six meters in width and thickness, and has an oval overall outline. The surface is lustrous with iron, and the surface is covered with pits and scars, as well as many air marks, like handprints pressed by fingers. And there are obvious ablation marks on the surface, and it is not difficult to see that this is a meteorite.

After coming back to his senses, Ren Xiaoyao patted his head and said to himself: "I don't care what it does, I'm here to find iron, what does this meteorite have to do with me." With that, he went somewhere else.

At the moment when Ren Xiaoyao turned around, the knife in his hand made a strong vibration, detached from Ren Xiaoyao's palm, and the tip of the knife was inserted into the huge black stone, ready to "lift" the stone and take it away.

Ren Xiaoyao was happy when he saw the reaction of the knife, and said to the knife stuck in the stone, "What are you going to do?" Is there any treasure in this stone? Come back soon, we're going to find the iron ore, hurry up. Said to the knife like a child, Ren Xiaoyao had already regarded the knife as a living spiritual object, and it was the most important thing besides space.

When the knife heard Ren Xiaoyao's words, the white light flashed, and it broke away from the huge black stone, just when Ren Xiaoyao thought that the knife was coming back, the knife flew in front of the stone, the tip of the knife flashed towards the sky, and a strong white light flashed, and the tip of the knife rotated 180 degrees from top to bottom, sending out a short and wide white light flying towards the stone.

I saw that the stone was instantly passed by the white light, and the surface of the huge black stone was penetrated by the white light, and a thin layer of black skin fell off, revealing a silver-white smooth section, and the eyes reflected a dazzling light on the section, shooting on Ren Xiaoyao's face.

Ren Xiaoyao couldn't open his eyes because of the dazzling reflected light, so he hurriedly raised his hand in front of his eyes to cover the dazzling light, quickly changed his position, and saw the smooth section on the stone, and the whole person was stunned. Rushing back to his senses and excitedly rushing to the cross-section of the huge black stone to watch, he gently smoothed the cross-section with his hands, and the skin of his fingers felt warm and smooth.

From the surface of the stone at the beginning, Ren Xiaoyao judged that this was a meteorite, from the ablation marks remaining on the surface as a whole, and then the huge soil pit where the knife flew to, he knew that this must be a meteorite, but he thought it was a stony meteorite. Now when I see that the cross-section of the stone is silvery-white and very smooth to the touch, I think of meteoric iron.

Meteorites are cosmic meteors that have departed from their original orbits outside the inhabited planet or continent, or unburned stony, iron, or mixed stony and iron material that quickly scatters dust fragments on the surface of their habitats or other planets, which can also be called "meteorites". Meteorites can be broadly divided into; Stony meteorites, iron meteorites, mixed meteorites of stone and iron.

From the silvery-white cross-section, it is not difficult to see that this stone must be composed of zài iron, so the stony meteorite was eliminated. From the delicate, smooth surface of the cross-section, it is clear that this must be an iron meteorite.

Iron meteorites, also called meteorites, are mostly 90% iron and 8% nickel. Its exterior is coated with a 1 mm thick oxide layer of black or brown. There are also many large and small round pits on the exterior called air marks. In addition, there are grooves of different shapes. The facets of iron meteorites are as bright as those of pure iron.

From all kinds of indications, this huge black stone is an iron meteorite from the alien, Ren Xiaoyao judged this huge stone, the whole person jumped up excitedly, according to the shortest diameter of the meteorite, at least 6 meters, that is, a radius of 3 meters, so calculated, the huge black stone, actually weighed 30 tons.

Ren Xiaoyao looked at the knife in front of him, and for the first time he felt that this knife was a monster, and the thirty tons were easily "pulled" from the dirt pit to the halfway up the mountain by such a small knife, and the whole person was not good.

These thirty tons of iron are calculated according to the 90% iron content of meteorite, and there are 27 tons, which is enough for him to build a two-story high retest house.

When I entered the space, I saw the meteorite in the sky above the freeze-frame courtyard, not moving at all. Ren Xiaoyao felt that Ren Shiting was sleeping in the wooden house, and in a flash, he left the yard with meteorite and came to the river.

Looking at the huge meteorite in the sky, Ren Xiaoyao thought about the melting points of the iron, graphite, and nickel contained in the meteorite, if this stone is really meteorite, then it is mainly these three, so that it can be refined separately with the temperature of the space control.

"It's a good thing I didn't hand it back to the teacher, but I didn't expect it to be used." Ren Xiaoyao remembered the respective melting points of the three elements, iron melting point 1535 °C, nickel 1453.0 °C, graphite melting point up to 3652 °C.

Thinking of the melting points of the three elements, Ren Xiaoyao immediately sent a message to the space, allowing the space to use 1453.0 °C to refine the nickel with the lowest melting point first, the metal properties of nickel are transition metals, corrosion resistance: strong, oxidation resistance: strong, mainly used in military industry, aerospace, machinery, stainless steel, etc.

I saw a strong sky blue light in the space, shining down from the space above the unknown height, shining on the meteorite, the black molten shell on the surface of the meteorite was destroyed in an instant, and the meteorite revealed a silver-white appearance, with the increase of time, the silver-white meteorite slowly became red, and the surface of the meteorite dripped a drop of red "water", until the meteorite was full of holes and devastation, and there was no "water droplet" dripping.

Seeing that the shallow layer was almost melted, Ren Xiaoyao immediately transferred the "aqueous" nickel, and at the same time transmitted a message to the space, asking it to increase the temperature to 1535 °C to melt the iron, and not to let the solid in the meteorite fall. If the graphite also falls into the molten iron, this step will be in vain.

The space was exposed to the information of Ren Yao, and the original sky-blue strong light immediately turned into royal blue, shining on the meteorite iron full of holes, only to see that the meteorite was irradiated by the strong blue light, and a large area was melted, like a popsicle in boiling water, and it melted in an instant, leaving only a small piece of steel-gray stone.

Ren Xiaoyao saw the transparent and mysterious batch of red molten iron shrouded in the sky, reflected in every place in the sky below, as if he was in molten lava. The meteorite has been melted, leaving only a little bit of steel-gray stone, and I don't bother to continue, using the space ability to classify the molten iron according to the needs to make a large number of iron for building houses, a small number of thin iron bars, a small number of iron nails, and throw them all into the river water after completion.

The small amount of nickel in the molten iron is not removed continuously, which can reduce the rate at which the iron is oxidized. The reason why Ren Xiaoyao did not make iron wire was because it required a lot of other elements to make iron wire, so he only made some thicker fine iron.

And the iron used to build the house, because the building is not high, it is planned to have two and a half floors, so the requirements for iron are not high, as long as it is not too scummy. Anyway, with cement covering, solidification, iron is nothing more than an insurance.

The reddish iron fell into the river in the same way, and there was a sneering sound, and the red-hot iron entered the icy river, and a large amount of water vapor came out of the river. Because the river is flowing, there is no phenomenon of the river boiling.

Ren watched the water vapor on the river slowly dissipate, and when the last trace of water vapor disappeared, he immediately transmitted information to the space and scooped up all the iron products.

The reason why the iron products were thrown into the icy river was because Ren Xiaoyao wanted to see the results quickly, and there was another very important reason for quenching.

Quenching is simply the heating of steel until it turns red and cools it immediately, which can greatly improve the strength, hardness, wear resistance and so on.

Ren Xiaoyao looked at the large number of iron products in front of him, and thought that he was closer to building a house, and the whole person became physically and mentally happy. Although he is very satisfied with having space, and has a sister with a very good temperament, he hates the crossing very much, whether it is food, drink, housing and transportation, or social and technological reasons, he is extremely disgusted.

Therefore, Ren Xiaoyao attaches great importance to these iron products.

When he came back to his senses, Ren Xiaoyao remembered the nickel in mid-air, looked up, and something that made him speechless happened

To be continued