I am a Primitive Man

Once you find the crux of the problem, it will be much easier to do next.

Han Cheng lit the blacksmithing stove again, took off the wooden handle behind the saw, put it back in the stove, and burned it again.

Take it out after burning red, with the saw edge facing up, place it vertically between two stones and clamp it, and then use an iron chisel to tilt the irregular and small saw teeth to the two sides.

In fact, the best way to sharpen the saw teeth is not to hold it on the grindstone as before, but to use a saw to cut a not too deep cut on a log or a stool.

Then take out the saw, turn the saw upside down, with the saw edge facing up, and get stuck in the sawed gap.

Then use the iron file to start attacking the small sawtooths one by one.

However, because the current iron in the Qingque tribe is too little, every piece of iron should play its role to the greatest extent. It is impossible to make a special iron for sharpening the saw, so it can only be temporarily used for grinding. Grind.

Chichi~

Chichi~

The iron saw handle was held in his lame hand, and he pushed and pulled it back and forth. Fine pieces of sawdust ran out of the saw hole as he pulled it, and fell to the ground sporadically, forming a small pile of sawdust.

The modified saw will no longer have the phenomenon of pinching the saw, and it can be used to saw wood very smoothly.

The first carpenter is lame, like a child with a new toy, sawing wood with a saw and never stopping.

It is said that the saw was invented by the legendary carpenter Lu Ban after he went to the mountains to cut firewood and was cut by thatch.

Now with the existence of himself as a time traveler, Lai, a person who is gradually moving away from the carpentry industry and slowly rising, did not have the opportunity to invent the saw after being pulled by Maocao.

click

The hard wood finally couldn't bear the torture of the saw, and was cut in half, breaking in two at once.

The fracture is very flat, and it still feels a little hot to the touch.

This is rubbed by the saw.

He squatted on the ground with a limp, looking at the extremely flat wood cut, with admiration and emotion on his face.

Such a flat cut was something he had never thought of before.

He was also amazed and moved by the much faster progress than burning with fire.

Iron tools are so useful!

This is his sincere emotion.

Lame, holding a saw in one hand and an ax in the other, looked at the wood on the ground and became very confident. With these tools, he will be able to make more useful and beautiful things!

Brother Cheng, what is this?

Bai Xuemei squatted aside, pointing to the fracture of the wood and inquiring curiously.

The ax-wielding lame also slowed down, wanting to hear what Miko had to say.

There are circles in the wood, something they only recently discovered.

In the past, when cutting wood, the thin ones were broken by hand, and the thick ones were burned with fire. The incisions were never flattened, so the annual rings inside the wood were never found.

This is the annual ring.

Han Cheng said with a smile.

Annual rings?

Annual rings are the age of a tree, and every year it grows, there will be an additional annual ring in the trunk.

Bai Xuemei tilted her head and thought for a while, and after she understood what Han Cheng said, she squatted on the ground happily and counted circles.

One year, two years, ... eight years, brother Cheng, this tree is eight years old!

After Bai Xuemei counted the circles clearly, she shouted excitedly at Han Cheng.

The child bride-in-law, who discovered the novelty, was very happy, and ran around to count the wooden rollers that were cut off by lame.

Brother Cheng, this tree is ten years old... this one is nine years old...

Cheerful chirping sounds kept ringing, surrounding Han Cheng.

Shi Shi, who embraced the dream of flying, taught those of the original bone tribe to learn a few words in Mandarin, and then surrounded him to watch the lame use iron tools to make utensils.

Not only him, but other people in the Qingque tribe also like to gather here when they are free.

Many people are looking forward to the lame work to take a rest, so that they have the opportunity to touch the iron tools.

As for the teaching of the original bone tribe, it has now begun to differentiate.

Just like the people of the Qingque tribe taught by Han Cheng before, after adults have mastered some characters, they start to let them choose by themselves. Those who want to learn characters can continue to learn, and those who don’t like to learn divine characters can stop learning. Learning divine characters is no longer a hard target.

For the promotion and popularization of Mandarin, no discount is allowed.

These are all aimed at adults. Minors who don't need to work all day, still study for nearly three hours a day as before.

Bai Xuemei did not follow them to learn. As Han Cheng's child bride-in-law, she has been eating Han Cheng's little stove.

I don't know if it's because of the man's possessiveness, but Han Cheng doesn't want Bai Xuemei to have too much contact with other men, especially those who are about her age.

Eating and living with the Son of God, although Han Cheng has never said anything explicitly to the people in the tribe, under the subtle influence, the people of the Qingque tribe treat Bai Xuemei differently from others.

At the beginning, Xing, Xiaomei, Xiaoli and other people who were about the same age and wanted to sleep with the Son of God were a little dissatisfied with this, but now they are all used to it.

For primitive people, things similar to love that are still in an ignorant state will not occupy too much part of their lives, especially those tribes who work hard for food all day long.

Love in adolescence is more like a storm in summer, it comes and goes quickly, after some unhappiness, Xing, Xiaomei, and Xiaoli basically don't think about sleeping with Shenzi anymore .

The stone squatted on the ground, touched the ground with his hands, saw the flat wood section, his thoughts were flying wildly, and there were some joy and impulse of sudden enlightenment in his eyes.

He has a strong interest in astronomy and calendar, but he has always been entangled in how old he is.

Because when he was born, the calendar had not yet appeared, so there was no way to know the exact age.

This is also an important reason why most tribes determine whether they are adults according to their height.

Regarding how old he was, he had thought about it for a long time, but he couldn't find a solution, but now, he suddenly had a clear understanding.

After a tree is cut open with a saw, it can be determined how old it is according to the circles in its body. Can people do the same?

Would this be too painful?

Thinking of this, I suddenly regretted it again.

The people who came to attack their own tribe and were killed at the beginning should not be burned directly with fire. It would be better to cut them open to see if there are some small circles on their legs...

Stone, what are you thinking?

When Han Cheng saw Shitou squatting there without saying a word, he asked aloud.

Shi Shi was stunned for a moment, and then told Han Cheng what he had just thought.

After Han Cheng heard it, his mind was full of circles, and he had the urge to retreat.

The former has witch-species rabbits, and now there is a stone that wants to amputate human legs to test their age... Do you want to be this crazy?

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