I'm doing shopping in the original

Brother Xiaoku is not willing to stop such flames.

And Blue Bird is purely for experimentation. His most basic concept of isinglass is boiling. Ever since he got the skill of smashing from Dayan, he has been thinking about how to smash isinglass. Regarding the technique of smashing, Hua Hearon has full experience of failure.The tendon of the Roaring Beast was smashed to pieces, the feet of the two of them were inconvenient, but the muscles in their hands were well developed. After several stones went down, it was completely shattered into slag, and it was only when half of the tendon was wasted that they found a suitable one. strength.

Fortunately, there is still half a tendon that can be torn, otherwise Hu Po might be able to tear the two of them off.

After Amber was busy with the captives, she started to work on safety. Most of the men's injuries began to heal. The number of people in the tribe was not a sudden increase, but at any rate there was a significant increase of ten people. In addition, when she was injured before, she Having fully tasted the sweetness of the house, I plan to put the cave and start to expand the house.

She originally thought that it would be good if many people lived together and could squeeze each other to sleep. Later, she saw that Blue Bird and Jie were very intimate. There is not much difference between humans and animals. Sometimes men and women should sleep separately. Blue Bird The bird also hugged Jie, like a male beast biting the neck of a female beast. It is not in accordance with the rules, after all, it doesn't matter who sleeps with whom in the tribe, as long as they can have children.

It's just that this kind of behavior of the blue bird made Amber start to hesitate.

It’s not that a big house with important positions cannot accommodate dozens of people, but dozens of people can’t stretch out, and even Mo complains that sometimes he can’t move his body when he wants to do something, and many people in the tribe are paired up. Regardless of spring, summer, autumn and winter, you can have children together. There used to be only caves. It doesn’t matter if the children don’t know much about it. Just be wary that men will fight—after all, some people want to sleep, and some people want to have children. It’s always a balance no.

Now that we have a house, it may be more convenient if we separate it.

Although Amber doesn't have much idea about liberty or the marriage system, she strictly forbids private fights, and understands the impact of poor sleep. Out of humanitarianism and the pain of eating dog food, she decided to give up the idea of ​​a big house and start Build a hut.

So, taking advantage of Qiuhu's absence, she hurriedly asked the man to burn trees to save wood.

Not long after the mountain fire passed, humans lit the flames again. The destroyed wooden wall outside became the firewood and the target, and it was burned down along with the trees that lost their use value. It has been more than half a month since Amber launched the plan. The open space is getting bigger and bigger, and it's getting flatter. You don't even need to walk around, and you can see the lake directly on the flat ground through the trees.

Today they finally let go of the trees and decided to go hunting.

"It's really setting fire outside, and it's also setting fire inside."

Wu Luo paused, standing in the shade of a tree in a panic. The arrival of him and Yan did not wake up the two people who were addicted to playing with fire. Big, little cool brother has no way to observe the fire from the pottery kiln.

"Little Cool." Blue Bird held a brown clay pipe suspiciously, "Are you sure this thing is useless?"

Brother Xiaoku couldn't help but roll his eyes, "It's useful! If it's not useful, why should I burn it!"

The two people’s experiments on the heat can be described as repeated defeats and repeated defeats. At the earliest time, the two of them blew on the fire with their cheeks puffed up. After blowing for 10 minutes, they felt dizzy and dry mouth. They almost lost their minds when they rolled their eyes Return to the west.Later, it was discovered that the leaves can form wind, so they used the leaves as a fan to fan the wind. The effect of the fan was good, but unfortunately the situation was only a little better than that of the mouth.

Then they tried to use every tool they could think of, and they all failed.

Until Brother Xiaoku was drinking soup at night, watching Yan put the spoon into the clay pot, and because of the fleeting inspiration in his mind, he choked the soup into the trachea, and when he clenched his fist to cover his mouth, he suddenly realized that the palm of his hand Soggy.

So he clenched his fist and blowing air in, and found that this method was much better than blowing with his mouth.

After all, it burned your mouth before, but now you can waste a pipe at most.

According to ordinary people's thinking, it should be to find hollow plants or wood veneers, but Xiaokuge is different. He likes to burn pottery, so he naturally took out his own housekeeping skills and burned a pottery tube. The color is quite uniform. It's the same as the copycat version of the golden cudgel.

Blue Bird held the pottery pipe in his hand in embarrassment, and said hesitantly, "Xiao Ku, why do you want me to blow it."

"You are more angry than I am." Brother Xiaoku was even more angry than he was right.

The blue bird had no choice but to put the pottery pipe into the fire with aggrieved, and soon became happy, "This way, it won't be too hot, and you can blow it for a long time, otherwise your face will hurt."

"Okay, let's blow it up." Brother Xiaoku is eager to accept the results. He has just made this pottery pipe. Although it should be successful in his imagination, he went to Wuluo confidently because of this concept, but it didn't After the experiment, you can't feel at ease, so you urged Blue Bird to be the test subject.

The blue bird was honest, and quite solidly poked the pottery pipe into the fire on the stove.

Uro clapped his hands and asked the old god on the ground, "When do you think they will find it dangerous to do so?"

"You should ask when they will find us." Yan responded with a slight smile. He also helped carry the basket full of charcoal and copper and iron ore, and asked thoughtfully, "Give them such a sharp weapon." , Do you really think it’s a good thing? This tribe doesn’t show anything special, and the way they deal with captives can be called barbaric.”

"Isn't it barbaric to swallow the primitive with civilization?" Uro said slowly, "Without us, sooner or later they will walk on the same path. No matter how civilization develops, these things are the same. Just like people will grow up , You can buy your favorite toys when you grow up, but since you can get them when you are young, why wait until you grow up and miss the fun.”

He originally wanted to ridicule the other party's ability to endure such a boring and poor life, but after thinking about it, Yan didn't know how to swallow the vicious words after decades of wandering in this wasteland.

Yan Heng laughed and didn't speak again.

The two of them were like kind old parents admiring the coquettish and "mentally retarded" operation of Blue Bird and Brother Cool. They watched Blue Bird vigorously blowing fire into the stove, seeing that the fire was obviously getting bigger, and Brother Cool Excitedly jumped up and shouted, announcing his success loudly, then watched the blue bird choke loudly, and suddenly let go of his hand. It burned Blue Bird's hair, his face turned black, and he coughed violently.

And little cool brother was hit by the hot pottery pipe on the back of his instep, fortunately he was next to the straw sandals, he felt hot and heavy, so he hugged his feet and jumped up screaming "Ai yo".

"A blue bird! What's wrong with you!"

Blue Bird choked to the point of tears. He covered his mouth with his arm, and coughed so hard that he wanted to roll his eyes. The anger sounded a lot less in the coughing sound, and it was closer to misery. "Little cool! You are stupid."

"Isn't it good?" Brother Xiaoku hopped on the spot for a while, and picked up the pottery pipe in doubt. It was a little hot, but he didn't scream like that. He squinted his eyes and looked at the mouth of the pipe. asked, "What's wrong?"

Blue Bird despaired, "Fire will come in! Fire just ate me!"

"Ah? The fire will eat you." Brother Xiaoku was taken aback, and forgot to correct the mistakes in the blue bird's words. He remembered Wu's serious talk about the mountain fire before, and subconsciously threw the pottery pipe to the ground. Watching the blue bird waving its arms in an exaggerated performance, the other party tried to express how the fire got in through the pipe, jumped up the clay pipe like a snake, and rushed into his throat, so hot that it almost burned his tongue.

Brother Xiaoku had lingering fears, and his mind was spinning fast, "Wow, if this is the case, those people will come to beat us again, can we blow fire on them?"

Bluebird was moved for a moment, and then thought of something unreasonable, "They won't blow fire on us, fire won't eat them."

"That's right." Brother Xiaoku resentfully said.

The principle is actually not difficult to explain. It was okay to blow air at the beginning, but as the blue bird put the pottery tube deeper and deeper, the fire became more and more intense. The high temperature inside caused the gas to expand, and it was inevitable to flow back along the pottery tube. Bird hid quickly, otherwise his throat would be burnt instead of his hair.

Wu Luoben felt that the fire was still small, and they had just blown air for a short time when they came again, and wanted to see a good show. Unexpectedly, the blue bird's name was a bird, and its lung capacity was as big as a whale, so it forced the fire up.

"Hey--"

Wu Luo finally realized that if he didn't speak again, he probably wouldn't have to speak in his life. The two of them could discuss the whole afternoon over a pottery pipe, and there was no need for him and Yan to come to help develop anything.

"Ah, Wu!" Brother Xiaoku finally got his ears back to work, and he jumped up in surprise, "I was looking for you!"

The blue bird ran over dying, opened its mouth wide, and said sadly and indistinctly, "Wu, the fire ate me up."

Uro patted him on the shoulder tenderly, pushed him away with all his strength, and dragged Yan to the side of the small stove to check the details carefully. Bluebird and Xiaoku didn't talk about goodbye, but he was good at building stoves. Not bad, add another blower inlet and you can start Metallurgical Avenue directly.

"What do you think?"

"Show me your design draft." Yan carefully observed the stove they built for a moment, and stretched out his hand to ask Wu Luo for the recent results, but Wu Luo honestly handed it over, only complaining half-truth "How do you know I have a design draft?"

Brother Xiaoku didn't notice anything, but Lanniao suddenly felt something was wrong, but he looked at Yan, then at Wuluo, they were all men, and immediately cast his suspicions to the sky.

Yan only glanced at the design draft before throwing it into the fire.

"Wow--"

Brother Xiaoku jumped up all of a sudden, and was about to reach for it, but Yan, who had expected it long ago, grabbed it by the back of his neck and pulled it away, not even a little bit of ashes.

Wu Luo shook his head to signal the little cool brother who was about to lose his temper to shut up, and said calmly, "Did you draw well?"

"Very good. You have read a lot of books, found a lot of information, and tried your best to choose the most suitable and best design drawings for them. You are very caring and hardworking." Yan answered him without sarcasm, and his voice was a little flat Bing Leng, "It's just that she has the demeanor of a young lady doing farm work. I know the general idea, so I don't think about anything else."

Uro was at a loss for words for a while, and sincerely asked for advice, "What's wrong?"

"It's not wrong, you drew all the small details, and the drawing is clear enough, it's just that you made a mistake." Yan slowly said, "I don't know if it's something wrong with you, or you Your job makes you picky, you have to figure out what time it is, and if a simple tool can achieve half the effect, then make it simple, not complicated.”

"A blue bird." Brother Xiaoku was so angry that he had to ask humbly, "Can you understand what the witches are talking about?"

The blue bird showed its face brilliantly, "Understandable, I am a witch."

Little Cool Brother "..."

Makes sense.

The two of them continued to squat and listen to the holy voice.

"You used three parts for the air vent alone, and the airbag part is connected by four buckles, which looks really clear, but if it fails, it will have to be disassembled from the beginning, which will increase the burden." Yan frowned, " You asked me to help you make a fan, in fact, a fan is enough, melting iron may not be enough, but you can melt copper, and it’s not too late to try iron after making copper.”

After pondering for a moment, Uro had to admit, "You are indeed right."

It is not entirely a good thing to cross too many thoughts and realms. After accumulating too much experience, you will get eager steps, but not all equipment is suitable for this era. Precision machines can be inspected by repairers in the future, but in this era , Once something goes wrong, they have to start all over again, which is indeed not as simple as the top priority.

After all, you have just started trying, and there is no need to waste time on tools.

It's not that Uro doesn't know how to develop, it's just that he is not an expert in this area after all, so he is inevitably negligent.

He couldn't help thinking about Yan's reminder of the bow and arrow before, and subconsciously said, "Is this also the reason for the bow and arrow?"

"That's not true, it's just that it's more troublesome." After Yan taught his wrong thoughts, his tone became calm again, and he calmly said, "Except for the bow tire, you haven't made any of them out. You want to develop? Bad thing, it's just that you're not stable enough, not stable enough to try this."

Uro thought about it.

"What's the matter with you?" Yan asked, he didn't think Wu Luo was such a fragile man, whether it was getting along these days, or spying on the other party's essence before, the other party's mobility and patience were almost terrifying, so Yan Fascinated by him, but also impatient to disembowel him, and thoroughly see what is inside, "What are you thinking?"

"I was thinking about the loss-making business you did." Uro replied slowly, "I finally started to feel a little flustered by the profit."

Yan smiled and said, "It's only now that I start to get scared, it's too late."

Brother Xiaoku and Blue Bird watched them fight each other for a while and then immediately returned to their normal state. They felt aggrieved by being pushed off the cliff but found hanging in mid-air. It’s not that they expected the two wizards to fight. Get up - I also know that Yan will be beaten into a pig's head even if he uses Wuluo with one hand. Anyway, his big and strong arm was almost twisted into a boar's hoof by this doctor.

It's just that this sudden tension is as scary as the sudden relaxation.

Anyway, Brother Xiaoku is very sure that if he quarrels with Blue Bird, it is possible to hit him on the head with clay, but it is impossible to smile.

Primitive people's body is also a kind of language, and Wu Luo and Yan are not people who express their emotions with their bodies. Their emotions seem to only be expressed on their expressions. When no one knows what is going on, the two of them seem to understand. What was the other party talking about?

"Let's make fan blades." Uro said patiently, "You burned my design draft, and you always have to return me a simple tool."

Yan smiled and said, "You really know how to call people."

"Does your conscience only come online when you're working?"

"Of course not, it's just that I'm not a workaholic like you, and my conscience should be used in an appropriate place." Yan said that he seemed to have a heavy responsibility, but he didn't work hard by himself, but looked at the hot stove and directed With the silly blue bird and Xiaoku, we first went to cut the wood and bark, and explained slowly, "You just want to smelt iron and copper, and the melting point of copper is lower than that of iron, so we have two ways now, see Which one do you want?"

Uro pondered for a moment, then calmly said, "Then tell me about both."

"One is blast furnace ironmaking. I only know a rough idea of ​​this thing, and the output should be higher in my impression. You'd better find out the information and we can discuss it. The other is to use the simplest blower according to their small stove. Once the copper water is melted, you can burn another pottery mold and make some simple gadgets."

Wu Luo said slowly, "We have charcoal, why don't we try a copper axe first? Burn a pottery mold first, I remember that adding tin to copper will lower the melting point, and it can also strengthen the hardness to make bronze ware."

"Use a copper axe? Thanks to you thinking of it, it's better to make a hook to prepare for the molten iron."

Blue Bird watched the two of them discussing, but felt dizzy. He didn't know if the isinglass he soaked in his hair would be of any use, so he pushed Brother Cool and asked, "I heard Wu and the others talking, and it seems that they don't want to Burning our things means burning stones, do you understand?"

"Hmph." Brother Xiaoku gave such a flat response.

If there is no mine, then you have to go to the river and soil to collect the iron bacteria slurry for experimentation, which will not only waste firewood, but also waste time.Now that there are mines, the difficulty has started to become another concept. For example, malachite is okay, and iron ore is harder than stone. To consider melting them, not only high temperature is required, but also the capacity to accommodate them is required. Material.

Then it can only be porcelain.

"It seems that we can only build a simple blower today." Wu Luo could only sigh after thinking for a while. This kind of thing is nothing more than brainstorming, but looking at the current situation, only he and Yan know what they are talking about. There is really no way to fully invest in it. It takes a certain amount of manpower to burn iron and copper, so we can only taste the sweetness of high temperature first. "Then let's start with pottery."

"Xiao Ku, go and get a little Tao."

"Ah-oh, yes."

Brother Xiaoku hadn't recovered from this completely incomprehensible conversation, he was sent to run errands, and rushed back to the house to bring a piece of pottery.

It's not so much a plank, it's better to say it's a piece of wood. The wooden stick was completely broken by Yan with a stone, and then combined with a hemp rope. It looked a bit like a magical prop in a cartoon that Wu Luo had seen before. ——Bamboo Dragonfly.He has played with this kind of small toy before, and the wind it spins is not too strong, but the one in Yan's hand is at least ten times bigger, so the wind it spins should be considerable.

"Try the high temperature at the mouth of the furnace?"

"Is this done?" Uro was shocked, "Just... just this one?"

Yan replied calmly, "Of course not, we have to make another outlet."

Of course, his tuyere is just the mud blocking the wind blown by the "bamboo dragonfly", which is not too different from the principle of the pottery pipe, and it is just piled up with mud to form an empty shell for tools.Although an opening was made for the entry and exit of the fan blades, in order to avoid air leakage, the opening was covered with broken pottery, leaving only a gap for the rotation of the wooden stick.

"That's it?" Seeing that Yan seemed to have no other movements, Wu Luo asked subconsciously, "Is this different from a fan?"

"It's stronger than the wind of a fan."

It's not that Wuluo can't understand this principle, but he feels that this tool is a bit crude, so he murmured, "Okay, let's try it and burn porcelain?"

"Should only be able to burn stone-bodied porcelain." Yan turned the tool for a while, and the fire became more intense, and the heat wave rushed towards them. The four of them gathered around a rough stove to observe the fire. The change of the fire could be seen with the naked eye. Observing the height is like looking at the sun for a long time and it will leave afterimages. The fire is the same, but the temperature at the furnace mouth is always much lower than the inside. Besides, the stove is not too short, and they just made it The tuyere, the middle temperature should be the highest.

Wu Luo pondered for a moment, and went back to the tribe to get the pottery they used to steam things. For the sake of Yan's mental health, he took it all the way back and broke the intact pottery wall, leaving only the circular steam plate at the bottom to signal to everyone " How about we change our thinking? Connect the two tools?"

Originally, the stove is the stove, the blower is the blower, and the firewood is stuffed in from the bottom of the stove. In this way, the blower is actually still used with the ceramic pipe, and there is still a risk of tempering, but the risk is relatively small, and there is no risk of fire. It is not easy to hurt people.

Uro decided to change the opening under the stove into a vent, and change the fuel to be put in from the entrance. The steamer plate can be used as a grate. This kind of thing is originally used in rural areas to burn fire and leak ash, so it is used here to isolate The flame is just right, and it also avoids the backfire accident of the blower below.

The stove was still hot after the fire was extinguished, and everyone waited for it to return to normal temperature while discussing how to make it better.

"Have you ever heard of the chimney effect? ​​It means that the airflow caused by the rise of hot air entrains new air, which promotes combustion and strengthens the convection of the air, thus making the flame more violent. With the addition of blowers and charcoal, what do you think Is it possible to reach the temperature at which iron melts?"

"If we don't experiment, none of us will have an answer." Yan didn't have too much expectation for these, he pondered for a moment, and slowly explained, "Where should we open our mouths?"

Uro and him looked at each other, no one could figure out how to open the chimney effect, so he coughed in embarrassment, "How about we focus on the experiment in front of us first?"

"can."