Wang Yang put Wang Yingying down, quickly summoned everyone, and without saying a word, led them to the other side of the hillside, pointing to the excavated ore layer and screaming.

After that, he drew his findings to them.

Everyone was very excited, didn't say anything, and dug directly.

This is more than ten days, the shallow soil layer on the hillside has been dug up, revealing a large area of ore layer, everyone spares no effort to dig crazy, mining during the day, mining at night, dreaming and still mining.

In short, how fast can you pick and how fast you can pick, almost into a state of madness.

The mining process is not fast, the people have limited manpower, limited tools, and it is quite laborious to mine in the face of a pile of hard ore layers, but this does not dampen their passion, and they are in full swing.

A month later, a quarter of this small hillside was mined by everyone, which is really the tip of the iceberg, and there is no need to estimate.

The energy and effort they spent in January was completely disproportionate to the harvest, and at this moment, everyone felt a little lost.

Wang Yang's original plan was to get as much tin as possible before winter arrived, and then migrate again.

But for now, even if it were mined for another three months, this small hillside would not be able to be mined, let alone the large amount of tin ore that might be found underground.

Since you can't mine it, shouldn't you store food for the arrival of winter?

To be honest, he didn't want to stay here, because he didn't know if the Ice Age would expand here, and it was not safe to stay here, maybe he would be able to settle down for a year or two, but in the long run, it was not a good plan.

He still needs a more stable living environment. Migration is a matter of time.

But how to solve the current situation of tin mining is too slow?

He looked at the ore heating up in the campfire and was silent.

The availability of tin is low. There is not much tin in these ores, and it has been mined to this day. They have only refined dozens of catties of tin ore, and the volume of half a wooden barrel is not large, it is quite rare.

The extraction of tin is also a big problem, and he found that there is a difficulty in extracting tin, after the tin is melted, it will often be mixed with charcoal and firewood, mixed with a lot of impurities, and it is difficult to obtain all the tin of a piece of ore.

He had to think of a better way. Take advantage of better methods.

The firelight reflected Wang Yang's face, his brows furrowed, and Wang Yingying brought him food and fruits.

After eating a few bites indiscriminately, Wang Yang summoned everyone and explained to them their plans for the future.

"Stop here first, don't migrate this year, store more food, and study tin."

He put forward four very clear and concise ideas, which were supported by everyone.

It's just that they don't have much understanding of the fourth point, "studying tin". I've never been exposed to this knowledge, so how can they study it?

Without thinking too much, this aspect will definitely fall on Wang Yang's head, and he will find a way.

Look at the campfire. Wang Yang stared at the ore tightly.

The ore is heated in the fire, part of it retains its original color, and part of it turns grayish. Obviously, the part that turned gray. It's tin, but it's not the same. It is other impurities.

Remembering the scene of being burned when I touched the tin for the first time and turned white, I smiled slightly.

But suddenly, his smile was dumbfounded, and a flash of light flashed in his mind, repeatedly flashing the physical changes of tin, and muttering to himself in a daze.

"It's tin that turns white, then what doesn't turn white isn't tin, I need tin, I just need to make it white, and then take it off......"

"Quick! Bring me a pebble! Wang Yang suddenly shouted, emotional, pulled to his waist, took out one or two gray animal skins, one was spread on the ground smoothly, and the other was put in his hand.

Then he took two sticks of firewood and pulled the discolored ore out of the fire.

At this time, Xiaohong hurriedly gave him a pebble.

He grabbed the pebble in his right hand and the hide in his left hand and grabbed the ore.

"Zizi~" The animal skin made a sound that could not stand the high temperature, and Wang Yang used the pebble intently to gently knock on the whitened part of the ore.

"Buzz~" with a soft sound, I saw that the white part of the tin suddenly turned into powder, and fell on the gray animal skin, like snow chips.

It is intact, with only a little impurity.

"Yes, tin that is roasted to more than 100 degrees by high temperature will undergo physical changes, just like water will evaporate when exposed to high temperatures, freeze when exposed to low temperatures, and tin will be fragile when exposed to high temperatures.

"If I don't let it turn into tin, but extract it when it turns white, I can extract more tin, and purer tin! If you want to use it later, heat it up and turn it into juice! ”

As one of the famous five major metals, gold, silver, copper, iron, and tin, tin is the most susceptible to the influence of temperature, and only needs a simple more than 100 degrees Celsius to produce earth-shaking changes, and for Wang Yang and others, the temperature of more than 100 is simply easy, and there is something you want.

Even if it is more than 200 degrees, as long as it burns for a longer time and the firewood is more vigorous, it can be achieved.

However, it is very difficult to collect liquids, especially high-temperature liquids, which are extremely corrosive, and when poured on a wood-made formwork, they will cause potholes and erosion, resulting in the inability to form directly and need to be sanded.

It can also be mixed with eroded substances, resulting in a loss of purity.

If it's just a pile of powder, it's much simpler, just spread a piece of animal skin on the ground and you can catch it all.

What's more, the sand and gravel in the ore will not be mixed into the tin, the temperature of the tin powder is not so high, the corrosiveness is naturally not so strong, the cooling is quite fast, and the purity is naturally improved by more than one grade.

"Ha Lu Ha! Fortunately, my brain is still spinning fast, and the knowledge I learned has not been returned to the teachers. ”

Wang Yang was extremely excited, and smiled at everyone.

Being so happy, it was naturally impossible for him to extract more tin just because he could extract it, but thinking of this, he thought of how to mine tin ore!

In school, he always thought that mathematics was of little use, because no matter how fast the mental arithmetic was, it was not as fast as the computer.

However, later, he found that mathematics is indeed a very good subject, and the focus is not on its arithmetic, but on its ability to stimulate the flexibility of the brain in disguise.

Those math problems, as long as you do it for a long time, you can find a rule, all of them are a routine, but the number in the problem is changed, testing everyone's flexibility to draw inferences, the only thing that remains the same, it can be said that it is Xiao Ming and Xiao Hong, the two sad children.

He was inspired by what he was looking for, and naturally thought about how to use it.

Heat all the tin ore to more than 100 degrees? No! Of course not! In a pig's eye! It's so dry if you don't have the heart and eyes! How long does it take to burn, and how much wood is wasted? Aren't you afraid that the buddy from the Forestry Bureau will invite you to tea?

What he thought was that tin would also turn into powder at minus 30 degrees Celsius, and during the glacial age, temperatures at minus 30 degrees Celsius would ......

"Hey, hey, hey." His eyes smiled into a slit, as long as winter comes, there is no need for everyone to do it, the tin will obediently turn into powder for everyone to take.

Thinking of this, Wang Yang only felt that his chest was comfortable, and his future life was too beautiful, looking at the starry sky, he was so intoxicated that he was about to float above the moon.

"I'm a genius...... "He added to himself.

The moonlight fell, mixed with the afterglow of the firelight, and his ecstatic and frenzied appearance at this time was clearly illuminated.

When everyone saw him so funny, they couldn't help but laugh, and Xiaohong slapped his ass badly.

Suddenly, his whole body was agitated, and he shrank his neck in fright, and hid to the side to look around, alerting for any "savage creatures" approaching.

The Exorcist and the others asked him what was so happy.

Wang Yang only seems to explain this very abstract problem, and in general, it is very difficult to explain it to a group of people who do not understand the reason.

Fortunately, he studied liberal arts, and the phenomenon of water was used as an analogy, and everyone understood ignorantly and did not continue to ask.

It's also thanks to them that they didn't ask, otherwise how would Wang Yang explain this chemical phenomenon?

With hope, the rest of life is much simpler.

The people hunted hard, stored food, and waited for winter to come. After all, this forest is much southerly, and there are still many animals, so it is not difficult to obtain a large amount of prey by relying on various tools.

Wang Yang did not participate, he picked a lot of branches, and accumulated dry firewood with his friends to face the severe cold of winter.

Not only that, Wang Yang also used spruce leaves to make a lot of brooms for everyone to clean, including many preparations for collecting tin powder in the future.

As the saying goes, the human heart is not enough to swallow the elephant, and if you have something, you naturally want something else.

For example, with tin, I want to find other metals quickly, make hard alloys, and develop more tools.

He also didn't care that the melting point of other metals was too high, and he needed the requirements of the kiln, clay, just look for it, and the metal is the key.

With metal, are you afraid that you won't be able to build a kiln?

In that sentence, there will be bread, there will be a house, let's buy a good house first, and then think about bread.

However, for the above old saying, that is, the sentence that people's hearts are not enough to swallow elephants, Wang Yang does not understand it as a derogatory meaning.

On the contrary, it is precisely because of people's growing desires that rapid development is promoted.

He had to stay hungry at all times, even if he had food that he couldn't eat for the rest of his life.

On this day, however, he came again into the woods, far from where they lived, an area that had not yet been explored.

But the forests are all about the same, and there is no difference.

He's here to find other metals and see if there's anything more to use nearby.

As soon as he arrived, he saw a man, a thin man, holding a wooden spear that was not very straight, looking around alone.

Wang Yang suddenly frowned, and muttered dissatisfiedly: "Which young man is so disobedient, running into the forest alone, and the wooden spear is so poorly made, I have to criticize Zhang San when I go back!" (To be continued......)