I am a Primitive Man

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After the anorexia caused by the hot weather was completely cured by Han Cheng with a few bowls of jelly, Wu's spirit seemed to be very good, and he returned to his previous appearance.

After Han Cheng saw this kind of fruit that was eaten by Bigfoot and was almost filled with manure, he couldn't help but see the joyful look.

As early as before, he wanted to ask Han Cheng what is the use of this kind of fruit.

I just saw that Han Cheng was in a very excited state at that time, and he was still arranging things there, so he has been holding back until now.

This thing can extract oil, and the extracted oil can be used to paint things like rattan armor, rattan helmets, and rattan shields, as well as tribal wood used to build houses.

Things like rattan armor can become very strong after being brushed with the oil of this thing.

Not only will it no longer be damaged by retting, but it will also become so strong that it is not easy to chop it with a knife!

Brush the oil squeezed out of this kind of thing on the rest of the wood, so you will no longer be afraid of the wind and rain, and it can greatly extend the use time of the wood...

Han Chengman was very excited and told Wu the various benefits of tung oil.

After Han Cheng said this, Wu also became happy.

What Wu was happy about was not quite the same as what Han Cheng was happy about. Han Cheng was happy because he got the tung oil, which could greatly improve the quality of rattan armor.

The witch is more happy that with this kind of oil that can poison people's fruit in front of him, the Son of God will no longer waste the fat oil in the tribe.

A few days ago, Han Cheng brushed the vine armor with fat oil, but Wu felt very distressed.

This kind of fruit can poison people to death, and the oil produced should not be eaten. Under such circumstances, no matter how much you brush on things like rattan armor, the witch will not feel distressed.

Son of God, then let's quickly get the oil out of these fruits!

Wu said excitedly at the side.

Get this oil out sooner, and Miko won't use delicious fatty oil to brush things like rattan armor.

Well, squeeze out the tung oil!

When Han Cheng was told by the witch, he immediately felt the same way.

The sooner the tung oil is squeezed out, the sooner the rattan armor can be perfected!

Han Cheng stood up while talking, and was about to start squeezing the oil, but after walking two steps, he froze there.

Damn! What do you use to extract oil!

The oil extraction that Han Cheng saw in later generations was to send soybeans and rapeseeds to the oil extraction workshop on the street, and let people squeeze the oil with electric machines.

After the machine comes down, the rapeseeds are pressed into cakes, and the pressed oil falls into the basin below along the place where the oil comes out.

It's just that, with a liberal arts background like myself, even if I force myself to die, I can't make such a machine!

There is another way to get the oil out besides pressing the oil with a machine.

The method is to use a stone mill to grind the oil, and use a stone mill to finely grind the fried sesame seeds into sesame paste, and then put the sesame paste in a large round-bottomed pot, shaking one after the other.

After shaking like this for a long time, the oil contained in the oil residue will be shaken to the top.

Use something to remove the top layer of oil, and then continue to shake.

After shaking continuously for a period of time in this way, oil will come out of the oil residue by shaking.

Han Cheng's grandfather used to grind sesame and sesame oil for a long time, and then used a pole to carry the oil pick to buy oil. The two stone mills at home were left over from that time.

Before Han Cheng traveled through time, he once went back to his hometown to take a look. In the barren courtyard, many things have been dilapidated, only two stone mills are still quietly leaning against the wall.

There is still a training stick behind the door, and there is no sound of calling children in front of the hall...

When I was a child, I often saw my grandfather do these things, so Han Cheng is no stranger to grinding sesame oil.

However, in my memory, it seems that only the small sesame oil uses a stone mill,

The rest, such as peanut oil, soybean oil, and rapeseed oil, are all squeezed out by machines.

This bitch is a bit embarrassing...

Son of God, why don't you use oil?

Wu, who also hoped that Han Cheng could use these fruits to produce oil earlier, and then stop thinking about fat oil, saw Han Cheng who said he was going to extract oil, but did not go immediately, but stood here He was in a daze for a while, and after a while, he finally couldn't help opening his mouth.

Han Cheng sniffed and squeezed the oil, I thought about it too, I thought about it more than anyone else in the tribe, but it meowed that he didn't have a suitable tool for squeezing the oil!

You can't squeeze it with your teeth, right?

If you really do this, whether your teeth will be tired or not is a trivial matter. The most important thing is that if you chew for too long, you will have to be served by a dung ladle...

I still think things are too simple, I just think that as long as there is tung oil fruit, everything will be fine... Sure enough, there are no simple things in the primitive era...

After standing here and hesitating for a while, Han Cheng could only choose to use the method of grinding oil to see if he could successfully produce some tung oil.

As for the oil press, this looks like something from the Lifetime series!

Well, let's grind the oil. Han Cheng said, and quietly changed the oil pressing to grinding.

However, Wu didn't notice the changes in words, and even if he did, he couldn't tell the difference, because Wu didn't understand things like oil extraction.

Han Cheng put the tung oil fruits in his hand on the ground, and then asked someone to get clean river sand from the side of the river.

Then he made a lot of sand and put it in the pot, and asked people to light a fire under the pot.

Seeing such a scene, Wu who was by his side and the rest of the people who helped were dumbfounded.

No one in his own tribe had ever eaten soil even in the most bitter and scarcest time of food. The Son of God is now so powerful that he has directly surpassed the low-level state of eating soil and changed to eating sand!

It’s just that the fine sand is very gritty when you bite it, but now Shenzi puts it in the pot like this, turns it back and forth with a shovel and fry it, will it become less gritty?

Although the act of frying sand in a pot seems extremely unreliable, God Son does a lot of things that seem unreliable to them on weekdays, and most of them later turned into things that are of great benefit to the tribe. Now These onlookers, after experiencing the initial stupefaction, quite a few of them vaguely believed that the Son of God could make the sand delicious.

Some people are eager to taste what the sand fried by the Son of God is like.

Among them, Wu, the old primitive man who had recovered from the initial shock, was the most excited and fanatical.

If the sand can become delicious by frying it like this, then the life of my tribe will be more comfortable in the future!

There is no need to plant the land. When you are hungry, you can go to the river to get some sand and fry it.

Even after traveling to the primitive era, Han Cheng's nerves have become very tough after undergoing a lot of tempering. At this time, after understanding Wu and the others' thoughts, Han Cheng's face still twitched uncontrollably.

It is too cruel! He is more vicious than himself, who came from the foodie empire!

I, who was born in a big food empire, dare not talk about these sands. You guys are better off, and you have directly decided to rely on eating sands to eat until you grow old...

This sand is not edible. Not only can it be fried, it can't be eaten even if it's boiled or steamed. It's the same with things like onion, ginger and salt...

After lamenting the ferocity and good teeth of the people in the tribe, Han Cheng waved his hands again and again to educate everyone, especially the witch, and he had to explain it well.

Half of the old man's teeth are about to fall out. If it's because of tasting the fried sand, it's okay to lose some more?

In order to prove that I didn’t fry the sand for eating, after frying all the water in the sand, and feeling the sand already burned my hands, I hurriedly dropped half a bag of tung oil fruits that Dazuo and the others brought back into the pot filled with sand , Stir with a spatula and start frying.

When grinding oil at home, you need to fry the sesame seeds first, so that not only the oil is fragrant, but the oil yield can also be improved.

Since Han Cheng wanted to make tung oil by grinding oil, he naturally needed to follow such a procedure.

Moreover, I remember seeing it there, saying that cooked tung oil is better than raw tung oil.

The tung oil fruit is big. If you don’t add sand, it’s not easy to fry it completely. The most likely reason is that the outside has been fried, but the inside is still not cooked.

But it is different with sand, which can take care of all aspects. Not only can the buried tung oil be heated evenly, but it can also prevent the heat from becoming so scorching.

With the experience of frying shelled peanuts, Han Cheng can think of such a method, and it is not unusual to fry this tung oil fruit well.

After a lot of stir-frying, Han Cheng confirmed that the tung oil fruits had been fried, and asked people to remove the fire.

After letting it cool down a bit to lower the temperature of the sand, someone brought a bamboo sieve.

Even the sand in the tung oil fruit belt is shoveled into the bamboo sieve, and the hands are held back and forth to dry it. Only the fried tung oil fruit remains in the sieve.

Such a simple and quick method made the eyes of those who were still thinking about how to get these tung oil fruits out of the sand shine.

It's delicious!

Han Cheng called some people to peel the fried tung oil fruit with him.

Unlike when it was not cooked before, the tung oil fruit that has just been fried has a hot aroma.

While peeling the shell, someone sighed here.

If Dazuo, who had eaten the tung oil fruit, was not still lying on the bed at the moment, and Shenzi told them over and over again that these things should not be eaten, because eating them would poison people to death, these people would definitely take this delicious-smelling fruit to the mouth...

Wu is secretly putting something into his mouth right now, it's not tung oil fruit, but some sand that has dropped in temperature secretly.

Although Han Cheng has made it clear that these stir-fried sands are not edible, but Wu is still moved by the scene he imagined that as long as people are hungry, he will bring some sand from the river to stir-fry. .

So I secretly poked some sand into my mouth...

Bah, bah...

Wu was there spitting out the sand, and it was just as Shen Zi said, it was not tasty.

Seeing the scene where Wu spit out sand, Han Cheng wanted to laugh again, and his face twitched a little.

In fact, when Wu secretly hid the sand in his hand, Han Chengcheng saw that the reason why he didn't stop it was because Han Cheng felt that Wu's spirit of exploration was worthy of praise.

Although I am an experienced person, I am not an all-rounder, and I cannot do many things by myself.

Under such circumstances, it is extremely important to train newcomers and cultivate the exploration spirit of everyone in the tribe. Only in this way can the tribe develop better...

The peeled tung oil fruit, Han Cheng, did not directly grind it with a stone mill, but planned to smash it with a stone mortar first.

Because compared to soybeans and peas, the size of tung oil fruit is still too big, so it is not easy to grind. It is best to crush it with a stone mortar first, and then use a stone mill to grind it into powder.

Boom! Boom!...

Han Cheng didn't let others do it, but he held the wooden pillar and pounded it there.

As he continued to exert force, the fried tung oil fruit in the stone mortar was smashed, and later, after the tung oil fruit became more broken, with every impact of Han Cheng, oil would faintly seep out, When the stick is put away, the oil will shrink back.

After smashing all the tung oil fruits he brought back, Han Cheng put them in a bowl and bowl, and then took them to the stone mill for grinding.

As the stone mill rotates round and round, these crushed tung oil fruits are ground little by little and fall from around the stone mill.

Looking at the ground tung oil fruit, Han Cheng's complexion was not very good.

Because the ground tung oil fruit was different from what he had imagined.

In my impression, when the roasted sesame seeds are ground, the sesame seeds will directly turn into sesame paste, which flows down slowly around the stone mill like soy milk.

And now, although these ground tung oil fruits look shiny, what comes out is not sauce, but a loose powder or something like that.

Damn, this is unreasonable!

Grinding oil is the only way I can think of to make tung oil at this time, but now, it's like this!

Looking at the broken tung oil fruit that fell into the groove around the stone mill and stayed there without moving, Han Cheng's heart went cold.

There is no need to carry out the next step of shaking the oil, Han Cheng has basically determined that it is basically impossible to make tung oil like grinding small oil...

Oh~

Reluctantly put all the ground tung oil fruits into a ceramic pot with a sharp bottom, sat there shaking for a long time, after not a single oil flower emerged, Han Cheng finally gave up this futile practice and sat down on the wooden pier On, couldn't help but let out a long breath.

Seeing that the tung oil fruit is in front of you, but you can't get the oil out, it is really infinitely melancholy.

From great joy to great sorrow, this roller coaster-like psychological experience is really uncomfortable...

Twilight fell, time passed slowly, and the night grew darker.

After Little Pea and Bai Xuemei fell asleep one after another, under the cover of night, Han Cheng took off all his disguises, lay on the kang, looked at the dark roof, and worried about getting tung oil.

He has been thinking about this matter for a long time, his mind is in a mess, and he still has no clue.

After a while like this, he threw all the messy thoughts out of his head and considered the matter from the most fundamental.

The so-called oil extraction, to put it bluntly, is to use sufficient pressure to squeeze out the contained oil from the raw materials that can produce oil.

The oil-pressing machines of later generations were designed according to this principle.

Theoretically, as long as the space where the oil exists can be reduced as much as possible and enough pressure is applied, then the oil can be squeezed out of the oil, not necessarily the kind of squeezing with an electric belt in later generations. oil machine.

Moreover, in ancient times when there was no oil press, vegetable oil also existed, some were used for eating, and some were used for lighting.

No matter what it is used for, this clearly tells Han Cheng one thing, that is, the oil press that does not rely on the electric belt of later generations can also squeeze out oil!

That said, there are other ways to extract oil.

Thinking down this way of thinking, after a while, Han Cheng sat up from the kang, fumbled to light the oil lamp, wrote the word press on the ground with a charcoal pen, and squatted there carefully. Look.

After watching this for a while, Han Cheng's face became more and more happy.

If you look at the word press separately, it is a tah plus a point.

This explains the problem very well, and it can be understood as using a stick to smash into another pit.

In addition, Han Cheng remembered that during the daytime today, when he smashed the fried tung oil fruit in the stone mortar with a tree stick, there was a scene of tung oil emerging from the tung oil fruit with his strength. The oil machine, and the method of squeezing the oil out, has vaguely emerged in Han Cheng's mind.

After figuring this out, there is still one thing that Han Cheng needs to solve, that is how to let the oil squeezed out of the wooden stick flow out, instead of retracting the wooden stick and retracting it into the oil again

Today, when he pounded the wooden stick into the stone mortar, at the moment when he pounded hard, tung oil appeared faintly, and then retracted again.

If you don’t take back the wooden stick, but continue to add wooden sticks to it, and compress the space inside the stone mortar little by little, then the squeezed oil won’t shrink back, right?

A lot of things are window paper. When you don't think of a solution, you can make people miserable, but once you figure it out a little bit, the thinking becomes more and more smooth, and many other problems will be solved easily!

Just like Han Cheng now.

Squatting here, the more Han Cheng thought about it, the more excited he became. After this excitement lasted for a while, it subsided a little.

A stone mortar is not suitable for making 'caves'. Although the stone is hard enough, its toughness is not enough. If you smash wooden sticks into the stone mortar filled with wooden sticks, Han Cheng thinks that the stone mortar is very likely. will be propped open.

After all, when the tribe opened the stone, it also opened a gap and propped it open with wooden stakes.

It's just that you don't use stones as 'holes', so what should you use as 'holes'?

After thinking like this for a while, Han Cheng's eyes once again fell on the word 'squeeze' written by him.

After a while, a dazed look appeared on his face.

Oak is a very slow-growing tree. Because of its slow growth, the wood is very solid.

The characters were not created randomly. When the character '银' was created, other trees were not selected, but oak wood. If you think about it a little bit, you can understand the meaning contained in it.

This is the charm of Chinese characters!

From the structure of the characters alone, many things can be drawn.

Not to mention the rest, it's just that Han Cheng is thinking about extracting oil this time. If what he is facing is not Chinese characters, but zigzag letters, even if he eats these characters with some seasoning, he can't even think about it. Get hints on what to get from above.

Blowing out the lamp, lying on the kang for a long time, Han Cheng didn't feel sleepy, and felt sincere admiration for the wisdom of the ancestors in making characters over and over again in his mind...

Come with me, let's chop trees together!

Early the next morning, Han Chengcheng greeted some people in the tribe and followed him to sabotage.

He fell asleep only halfway through the night last night, but he woke up early today and is still full of energy, as expected, he is refreshed on happy occasions.

Although everyone didn't understand why the Son of God called him to wait for others to cut wood early in the morning, but the matter that the Son of God had explained was naturally not discussed.

Han Cheng is no stranger to oak trees. In several hills in Linhe, his hometown, there are oak trees. They were planted in the last century, and it must have been several decades.

None of these trees grew up, because when they were first planted, they were used for windbreak and sand fixation, and for firewood forests.

Every year when winter comes, people who are idle start to cut it off, pull it back to be used as firewood, and wait for spring to sprout again.

In Han Cheng's hometown, these trees are called 'forests', and there are mainly two types. In fact, if you look at the trunk alone, you can see too many differences. The biggest difference between the two is in the leaves.

In fact, the leaves of the two trees are quite similar, but one of the leaves is much larger than the other.

This kind of big leaf is called Hu Ye in the hometown of Han Cheng's descendants. When steaming buns at home, Hu Ye is often used to spread the pot.

The buns steamed in the Huyepu pot have a fragrance of leaves, which smells good and tastes good, which is not found in the buns sold in bun shops.

Both types of trees produce acorns when they grow up.

In Han Cheng's cognition, two kinds of trees that look very similar can be called oak wood, but in some places, when oak wood is mentioned, it only refers to the tree with big leaves.

There are also these two kinds of trees around the Qingque tribe.

Acorns, before Han Cheng came over, were also a kind of fruit that people in the tribe were happy to collect during the winter.

That's the only one! Han Cheng pointed to an oak tree and said to the person holding the felling tool.

Unlike the forests in Han Cheng's hometown that were used as firewood gardens and had no chance to grow, the oak trees around the Qingque tribe grew tall enough.

Not long after leaving the tribe for a few miles, Han Chengcheng fell in love with an oak tree, the kind that the two of them couldn't hold together.

If you want to squeeze out more oil at one time, the hole you dig out on the trunk must be large, because only in this way can you put in more tung oil fruits at one time.

Correspondingly, the tree for making tools must also be thick.

Immediately after Han Cheng gave the order, someone with a bronze ax tied around his waist jumped up the tree three times and two times, and then began to cut branches there.

This is to make the tree fall quieter, cover a smaller area, and make it safer for people logging below.

After almost one branch of this big tree was cut down, there were four people who often pull big saws. Two groups of people held two big bronze saws that were usually used to untie wooden boards, one on the left and one on the left. The right one started sawing.

Oak wood is solid, especially this kind of old tree that is old enough, and the tribes use bronze saws instead of bald and strong chainsaws for logging, so I waited until almost noon the next day. A big tree can be regarded as being completely brought down.

After the big tree fell, some began to transport the cut branches to the tribe.

Thick ones can be used to build houses, while thinner ones can be used to burn charcoal.

Several people who pulled the big saw took a rest for a while, took over the re-sharpened saw, and continued to saw the thick tree, which mainly cut off the trunk of the tree.

This work was not fully completed until the evening.

It was already noon on the third day when everyone brought the thick tree trunk back to the tribe.

Regarding how to make these tools for oil extraction, Han Cheng only had a preliminary idea, and could only cross the river by feeling the stones.

After returning to the tribe, Han Chengcheng began to let the people in the tribe start making tools according to his own understanding.

It was a round hole like a stone mortar that was pulled out vertically on the trunk of the tree lying on the ground.

After the round pit was pulled out, ropes were used to tie the two sides of the round pit tightly. This was to prevent too many wooden wedges from being nailed in, which might spread the tree trunk.

After finishing these and the wooden stakes to smash into it, Han Chengcheng poured the ground tung oil fruit into the pit, and then put the prepared wooden stakes in the pit vertically.

In the end, only a few sticks were put in, and Han Chengcheng stopped.

Because after these wooden pillars were put in, a part of the loose tung oil fruit powder was immediately lifted up, and it couldn't be pressed at all.

After thinking for a while, Han Cheng stopped, pulled out these wooden stakes one by one, scooped out the tung oil fruit powder inside, wrapped it in fine linen, and put it into the wooden version of the 'stone mortar' again.

Then continue to put wooden stakes inside.

These sticks were pressed on the tung oil fruit powder wrapped in sackcloth. The situation just now eased a lot, but there was still some fruit powder that could not be pressed.

Han Cheng could only stop again and continue to think about the solution.

After a while, let Liao get a wooden board that is about the same shape and size as this wooden pit, put it inside, press it on the tung oil powder wrapped in sackcloth, and then put wooden stakes into the wooden pit again.

This time, because the wooden stake did not directly support the tung oil fruit powder, but on the wooden board that completely covered the lower tung oil fruit powder, this incomplete pressing did not happen again.

Han Cheng's face showed joy when he saw this.

As for how to extract oil, he himself has only a half-knowledge, so he can only try it out, discover problems in the process, and find ways to solve them, and improve this method of oil extraction bit by bit.

So far, it seems that progress is good.

At the beginning, the space of the wooden pit was large enough, and it was easy to put wooden stakes in it, but as the number of wooden stakes increased and the space inside became smaller and smaller, it was not easy to put wooden stakes in it.

Later, it was even more difficult to use a hammer to smash it inside, and this time was also the time when it was most vigorous.

Boom boom boom...

With the continuous swinging of the hammer, these wooden pillars were smashed and sank one by one. The space under the wooden pit was continuously squeezed, and the tung oil fruits pressed by the wooden boards were wrapped. Under such extrusion, the volume shrank and slowly Oozing grease...

After seeing the squeezed oil through some gaps, Han Cheng was all smiles on his face. After a few days of busy work, he finally saw tung oil. How could this make him unhappy? At the same time, this also proved the correctness of his previous thinking!

Han Cheng, who was not happy for a long time, soon encountered a new problem. The problem was that although the oil was squeezed out, there was no way to get it out...

Because the wooden pit has basically been filled with wooden piles, there are few gaps, and it is impossible to get anything to scoop out the squeezed oil.

There was nothing he could do, so Han Cheng had to turn the big tree trunk 90 degrees with great effort, so that the hole was parallel to the ground, and poured out the grease inside.

Not much was poured out, only less than two bowls, and the oil yield was really not high.

But this is enough for Han Cheng to be happy.

But before Han Cheng was happy, a new and extremely fatal problem reappeared, that is, the wooden stakes that had been stuffed into the wooden pit one by one could not be removed!

You know, in order to put enough pressure on the tung oil fruit powder below to squeeze out the oil, these wooden stakes were smashed in with a bronze hammer one by one in the back.

It took so much strength to nail it, how could it be so easy to pull it out now?

Lai and others tried for a while, but there was nothing they could do about it.

Looking at the wooden pit that was nailed by wooden stakes that were short on the outside and high in the middle, like the plastic barrel filled with bamboo sticks at the door of the deadly string, Han Cheng's face twitched.

It is easy to solve the problem of not automatically leaking oil. You only need to make some small holes at the bottom or on both sides near the bottom.

It is a big problem that the wooden stick nailed in cannot be removed.

You know, it took them nearly two days to dig out this wooden pit that resembled a stone mortar, but now it's a good thing, and it has directly become a disposable product...

Moreover, this wooden pit is still too shallow and too small, and the amount of tung oil fruit powder that can be accommodated at one time is not enough. According to the current situation, according to this method of oil extraction, when there is sufficient tung oil fruit powder, such a pit is at best It can only produce about five or six catties of tung oil. The efficiency is too low, and it is not cost-effective.

It's just that this tree is already the kind that two people can't hold together. If you want to find a thicker tree and perform this kind of operation again, it will take a lot of trouble...