Stone Era: Restarting Civilization

Another year has passed.

The food harvest has once again ushered in a bumper harvest, and now Pan Changgong has resurrected more than 1,000 people.

If everything is normal, tens of thousands of people can be resurrected in a few years, reaching the population size of a town.

If there are high-tech talents among them, the revival of human civilization can be accelerated.

Under the guidance of Pan Changgong, the villagers of Ishigami Village have been farming the fields smoothly, and they ushered in a bumper harvest in the first year.

Everyone seemed very happy, cheering and jumping for joy.

After some crops are harvested, they need to be processed before they can be used. For example, cereal crops, the grains of cereal crops are very large and hard. It is very difficult to swallow them directly like this.

Grains must be ground into flour to make flour.

The most primitive method is to pick up a big stone to smash the grains, which is very time-consuming. If you want to be more efficient, just make a stone mill.

Pan Changgong built water mills and stone mills in both villages, which can come in handy at this time.

There are many ways to use flour. The easiest way is to add water directly to it, then boil it and drink it as porridge, but the taste is not very good.

You can also add water, knead continuously to make dough, and then bake it with fire to make a cake.

There is another method, which is more technically difficult and tastes better, and that is to use flour to make bread.

To make bread, the flour must first be fermented by a single-celled microorganism called yeast.

This kind of microorganism will emit carbon dioxide when fermenting the dough, forming bubbles in the interview, so that the dough becomes very soft.

If the world order was still normal, yeast could be bought directly in supermarkets, but now thousands of years have passed, those yeasts have already lost their activity and need to be re-cultivated by themselves.

Pan Changgong’s pursuit of eating is not very big, so he has never tried to make bread before, but now with the increase in population, it is necessary to make bread, a delicious thing, so that others can master it and make it for himself every day. Very easy.

The first piece of bread in human history was produced in the ancient Pharaoh kingdom more than 3,500 years ago.

But people at that time just made it by chance, and they didn't understand microbiology and they didn't know why it happened.

The bread made at that time was really not delicious, it tasted very sour.

This is due to not having a good fermentation.

Yeast is naturally present in grains, but in addition to yeast, there are other microorganisms that are harmful to humans.

If yeast and other microorganisms are used to ferment bread, the bread will become sour. If you want to make bread that looks good and delicious, you must extract the yeast that is beneficial to people in the bread and get rid of those that are harmful to people. harmful to other microorganisms.

Pan Changgong came to the laboratory specially made for himself. In addition to himself, Ishigami Senkuu also has this laboratory.

Take a beaker, sprinkle a small portion of flour in it, add half a cup of water, and cover the box.

After finishing the work, Pan Changgong left temporarily. Yeast fermentation takes time, and the results can be seen after 12 hours.

After 12 hours, Pan Changgong returned to the laboratory, but there was no foam in the beaker, which proved that the fermentation was not successful.

Occasionally, this happens. The reason may be that it is gradually entering winter and the climate is relatively cold, which leads to a decrease in the activity of yeast.

Or the amount of yeast in the grain itself is too small, so there is no successful fermentation within 12 hours.

Pan Changgong opened the lid on the beaker, stirred it, then put the lid back on, and left again.

Even after 12 hours, the fermentation was finally successful this time, and many bubbles appeared in the water in the beaker.

Pan Changgong poured out the water in the beaker, then added some flour and water, closed the lid, and continued the fermentation.

Let the old fermented flour come into contact with the new flour. The purpose of doing this is to allow the yeasts that have multiplied on a large scale to get more nutrition and reproduce more.

After 12 hours, the fermentation was successful again, and the water inside was poured out, and new flour and water were added.

Repeat this process, and after a week, the yeast primer that is pure and free of other microbial impurities is considered complete.

Pan Changgong takes a small ball of sticky dough from the beaker, mixes it with fresh dough, which will quickly ferment into a soft bread, and then bakes it.

However, Pan Changgong is not a professional baker after all. Although the taste of the bread he makes is sufficient, there is always something missing.

But for everyone in the village, it is really a blessing to be able to eat delicious bread in such a primitive era

After a year, Ishigami Senkuu is also doing well here, making a crude mobile phone.

After making the phone, Ishigami Senkuu immediately handed over the phone to Pan Changgong, and secretly kept two phones

Pan Changgong stood in front of the simple telephone, and now the voice coming from the telephone was pleasantly surprised.

I make a phone that can make calls over infinite distances, even Pan Changgong can't do it. His IQ and access to books are not enough for him to make a more complicated phone.

"Good job Ishigami Senkuu, can you tell me how this phone works, and then write down the whole process of how to make it in detail, you also know that now our human civilization needs to start again, your knowledge is very important. "

Ishigami Senkuu: "Oh, Mr. Pan has already spoken, of course there is no problem, in fact it is very simple, first use sodium hydroxide to boil the gemstones, then use shells, hydrochloric acid and ammonia to make crystals, and mix them with burnt honey ..., if electricity flows into the water, hydrogen and oxygen will be decomposed from the water. What we need is hydrogen, because it burns at a very high temperature, which can reach thousands of degrees. This high temperature can be used to burn off the surface of the tungsten wire rust. The vacuum tube is the heart plastic of the mobile phone and can be used as the bone of the mobile phone. As for the gold wire, it can be used as the blood vessel of the mobile phone. It is also very important to gather these three parts..."

Pan Changgong and the others were all in the dark. Seeing that Ishigami Senkuu pretended to be such an Advanced match, Pan Changgong felt uncomfortable for a while and stopped Ishigami Senkuu from continuing to talk.

"Okay, okay, you can just write down the detailed steps. You don't need to say it, let everyone who is interested slowly figure it out."

After handing in the phone, Ishigami Senkuu put on his backpack and prepared to go out to collect some special minerals and plants.

Because only he himself knew it, and no one else knew it, so she had to go in person, and the two female soldiers with long guns were there as protection. In fact, everyone in the world followed.

Ishigami Senkuu didn't care. He didn't go out this time to collect any experimental minerals. He wanted to find a way to send the mobile phone he made to the destination.

After hours of walking, Ishigami Senkuu and his group finally arrived.

"Is this a tomb?" The two female soldiers behind Ishigami Senkuu looked at the small dirt bag not far away, standing abruptly on the flat ground, and asked doubtfully.

"That's right, and that's my grave" Ishigami Senkuu said.

"What? But Master Ishigami, aren't you alive and well?"

"You should have heard that I have a grievance with the Lion King, right? He almost killed me, and my friend. I built a grave for myself to avoid his pursuit and let him know that I am dead. I lost it, because of this tomb, although I escaped a catastrophe, the friend who built the tomb for me was brutally murdered, if Master Pan didn't appear, I would probably be finished too."

"It turns out that Master Pan is the most powerful, but I didn't expect Master Ishigami to have two companions. It's a pity. If he still exists now..." The two female soldiers did not feel that there was anything wrong with their words.

Ishigami Senkuu: "When I saw this tomb, I thought of my friend. They built a tomb for me, a living person, but they themselves were left in the wilderness. I don't know where they are now, and who can build them What about the tomb? Can you stand a little farther away? I want to kneel in front of the tomb alone and calm down."

The two female soldiers did not suspect him, they all looked at Ishigami Senkuu sympathetically, then turned around and walked to the distance, quietly waiting for Ishigami Senkuu to express his emotion.

After Ishigami Senkuu saw the two walking away, he took off his backpack and put it on the ground, to be precise, in front of him, so as to avoid the sight of the two female soldiers behind him.

Ishigami Senkuu moved as little as possible, and took out a very simple and ugly desk phone from his backpack.

Put the phone on the ground, and took out a small engineer shovel from the backpack, bit by bit, digging the land in front of him with small movements.

After nearly half an hour, I finally succeeded in digging a very shallow pit, just enough to accommodate the desk phone.

Put the telephone into the soil, fill it back with soil, and then place three triangular stones on top of the soil mound to form a triangle shape. This is the code.

The two female soldiers in the distance were already getting annoyed, thinking whether to go up to persuade Ishigami Senkuu.

Ishigami Senkuu finally stood up and left the place.

Ishigami Senkuu turned his back to the two female soldiers, and the corners of his mouth raised into a very pretended smile.

A few days later, Taiju Oki and Yuzuriha Ogawa, who came to worship on time, also came to Ishigami Senkuu's grave.

According to Ishigami Senkuu's instructions, Taiju Oki and Yuzuriha Ogawa came to worship once a month to ensure that they could discover the news they passed on in time.

When Ishigami Senkuu buried the telephone, it was just a month before it arrived.

As soon as Taiju Oki and Yuzuriha Ogawa approached, their gazes were fixed, and they were attracted by the three small stones placed in a triangle on the ground.

The two of them glanced at each other, both showing a look of surprise, and then immediately took out a crude stone knife that they carried with them, and excavated the ground where the stones were placed. Because the burial was very shallow, the two soon He took out the phone.

Taiju Oki and Yuzuriha Ogawa looked at the desk phone in shock. They didn't understand what the thing in front of them was for. The phone in front of them didn't look like a phone at all. The disc acts as a receiver.

After a while, they moved this weird thing full of steampunk style back to their camp.

In the camp, there are a total of more than a dozen men and women at the moment. They are all wearing simple clothes and hiding in the cave to cook by the fire. The cave is exactly the bat cave in Ishigami Senkuu.

The weather outside has turned cold. They come from the modern sub-healthy Constitution, and the simple clothes can't help them keep out the cold.

In such a poor place, if you catch a cold, it will be troublesome.

"Ah, you are here!" Several people in the cave saw Taiju Oki and Yuzuriha Ogawa and immediately got up to greet them.

Taiju Oki and Yuzuriha Ogawa both nodded and said hello last time.

"Hey, what are you holding?" The eyes of everyone were immediately attracted by the ugly utensil in Taiju Oki's hand. Although the thing was a bit ugly, it looked very complicated and precise!

"Oh, I don't know too well, I still want to ask you guys..." As soon as Taiju Oki finished speaking, the non-blame tool in his hand creaked.

"Huh, this is?" Everyone present was taken aback. The specific source of the sound should be the bowl-like thing in this weird appliance.

Taiju Oki seemed to think of something, and quickly picked up the bowl and put it on his ear.

"Hey, Dashu, can you hear me?"

Taiju Oki's eyes widened when he heard this familiar voice, and then his eyes turned red with tears of emotion.

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