Once you've found the crux of the problem, it's much easier to do.

Han Cheng rekindled the iron-striking stove, took off the wooden handle behind the chainsaw, and then put it back in the furnace and burned it again.

Take it out with the red cut facing up, put it vertically between the two stones, and then use an iron chisel to tilt the irregular and small sawtooth to the left and right.

In fact, the best way to sharpen the sawtooth is not to hold it on the grinding stone as before, but to use the saw to first cut a not-so-deep hole in a log or stool or the like.

Then take the saw out and turn it upside down, against the gap where it is stuck.

Then use the iron frustration to start cutting at the small sawtooth.

However, because the Qingque tribe has too little iron now, every piece of iron should maximize its role, and it is impossible to make an iron hammer out for grinding saws, so it can only be temporarily sharpened with a grinding stone.

"Whoa~"

"Whoa~"

The handle of the chainsaw was held in the lame's hand, pushing and pulling back and forth, and there were fine pieces of sawdust, which ran out of the saw mouth as he pulled, and fell to the ground sporadically, gathering into a small pile of sawdust foam.

After the transformation, the saw will not appear in the phenomenon of pinching saws, and it is extremely smooth to saw.

The first carpenter is lame, like a child who gets a new toy, saws wood with a saw, and can't stop at all.

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

Now that he has the existence of this traverser, the lame man, who is gradually moving away from the carpenter industry and slowly rising, has not been pulled by the grass, and then has the opportunity to invent a saw.

"Click"

The hard-hearted wood finally couldn't stand the torture of the saw, and was cut in waist and broken in two at once.

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

It's rubbed by the saw.

Limp squatting on the ground, looking at the incomparably flat wooden incision, with admiration and emotion on his face.

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

The speed of progress, which was much faster than that of burning with fire, also surprised him.

Iron tools are so easy to use!

This is his heartfelt emotion.

Holding a saw in one hand and an axe in the other, looking at the wood on the ground, he became very confident, and with these tools, he will definitely be able to make something more useful and beautiful!

"Brother Cheng, what is this?"

Bai Xuemei squatted aside, pointed to the broken part of the wood and asked curiously.

The axe-wielding limp also slowed down, wanting to hear what Miko had to say.

There will be loops in the wood, which is something they have only recently discovered.

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

"It's the growth rings."

Han Cheng said with a smile.

"Tree rings?"

"The growth ring is the age of the tree, and every year it grows, there is an extra growth ring in the trunk.

Bai Xuemei tilted her head and thought for a while, and after figuring out the meaning of what Han Cheng was saying, she began to squat on the ground several times with great interest.

"One year, two years、...... Eight years, Brother Cheng, this tree is eight years old! ”

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

The little boy and daughter-in-law, who had discovered the novelty, were very happy, and ran around to count the lame wooden rollers that were lying around.

"Brother Cheng, this tree has been around for ten years...... It's been nine years......"

The cheerful sound of chirping and clucking continued to sound, surrounding Han Cheng.

Holding the stone of the flying dream, those who taught the original bone tribe to learn a few words in Mandarin also gathered around to watch the lame use iron tools to make utensils.

It's not just him, but the rest of the Blue Sparrow tribe likes to come here when it's okay.

There are also many people who are looking forward to the working lame to take a break so that they can have a chance to touch the iron tools.

For the teaching of the original bone tribe, it has now begun to diverge.

Just like the people who taught the Qingque tribe by Han Cheng before, after adults mastered some words, they began to let them choose by themselves, those who want to learn words can continue to study, and those who don't like to learn the divine script can not learn it, and learning the divine script is no longer a hard indicator.

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

These are for adults, minors who do not need to work all day, and still study for nearly three hours a day, as before.

Bai Xuemei didn't study with them, as Han Cheng's approved child daughter-in-law, she has been eating Han Cheng's small stove.

I don't know if it's because of men's possessiveness, 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 Divine Son, although Han Cheng has never said anything clearly to the people of the tribe, but subtly, the people of the Qingque tribe treat Bai Xuemei differently from others.

At the beginning, Xing, Xiaomei, Xiaoli and a few other people who were about the same age and wanted to sleep with Shenzi were still a little dissatisfied with this, but now, they have become accustomed to it.

For primitive people, things that are still in a state of ignorance and resemble love do not occupy too much of a part of life, especially those tribes who work hard for food all day long.

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

The stone crouched on the ground, touching with his hand the lame, leveled section of the wood that had fallen to the ground, limp sawn, and his thoughts flew terribly, with some joy and impulse in his eyes that suddenly realized.

He has a strong interest in the astronomical calendar, and he has always been very 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.

As for how old he was, he thought about it for a long time, but he couldn't solve it, but now, he suddenly had an understanding.

After the tree is sawn with a saw, it can be determined how old it is based on the circles in its body, can people do the same?

Wouldn't it hurt too much if this was the case?

Thinking like this, I suddenly regretted it.

The people who came to attack their tribe and were killed should not be burned directly, but cut open to see if there are some small circles on the legs......

"Stone, what do you want?"

Han Cheng saw the stone squatting there without saying a word, so he asked out loud.

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

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

In the former, there are witch rabbits, and now there is a stone to cut off human legs to check their age...... Do you want to be so crazy?

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