Chapter 337 Trees have annual rings, and people have rings?
Once you find the root of the problem, it will be much easier to do next.
Han Cheng re-ignited the blacksmithing stove, took off the wooden handle from the back of the iron saw, then put it back into the stove and burned it again.
Take it out when it is red-hot, 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, small saw teeth to both sides.
In fact, the best way to sharpen the saw teeth is not to grind it on the grindstone as before, but to first cut a not too deep cut on a log or stool.
Then take out the saw, turn the saw over, with the saw edge facing up, and jam it into the gap made by the saw.
Then use the iron file to start sharpening the small saw teeth.
However, because the Qingque tribe currently has too little iron, every piece of iron should play its role to the maximum extent. It is impossible to make a special iron set for sharpening the saw, so we can only temporarily use a grinding stone.
Grinded.
"Chichi~"
"Chichi~"
The iron saw handle was held in the lame hand, pushing and pulling back and forth. As he pulled, fine sawdust ran out of the saw mouth, and fell to the ground in bits and pieces, forming a small pile of sawdust.
After the modification, the saw will no longer jam, and it can be used to cut wood extremely smoothly.
The first carpenter was lame, like a child who got a new toy and couldn't stop cutting wood with a saw.
It is said that the saw was invented by the legendary carpenter Lu Ban after he went into the mountains to cut firewood and was cut by thatch.
Now that he has the existence of a time traveler, this person who is gradually moving away from the carpentry industry and slowly rising up has not been pulled by the grass, and then he has an idea and the opportunity to invent the saw.
"Click"
The hard wood finally couldn't withstand the torture of the saw and was cut in half, breaking into two pieces at once.
The fracture is very flat and feels warm to the touch.
This was rubbed by the saw.
Lame squatted on the ground, looking at the extremely flat wood incision, with admiration and emotion on his face.
Such a flat incision was something he had never thought of before.
The progress was much faster than burning with fire, which also surprised him.
Iron tools are so useful!
This is his sincere emotion.
Lame, who was holding a saw in one hand and an ax in the other, looked at the wood on the ground and became extremely confident. With these tools, he would be able to make something more useful and beautiful!
"Brother Cheng, what is this?"
Bai Xuemei squatted aside, pointing at the fracture of the wood and asking curiously.
The lame wielding the ax also slowed down, wanting to hear what the Son of God had to say.
There will be circles inside the wood, which is something they discovered only recently.
In the past, when wood was cut, thin pieces were broken by hand, and thick pieces were burned with fire. The cuts were never flat, so the growth rings inside the wood were never discovered.
"This is the growth ring."
Han Cheng said with a smile.
"Annual rings?"
"The annual rings are the age of the tree. Every year it grows, there will be one more annual ring in the trunk.
Bai Xuemei tilted her head and thought for a while. After understanding what Han Cheng meant, 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 clearly, she shouted excitedly to Han Cheng.
The child bride who discovered something new was so happy that she ran around and counted the lamely cut wooden rollers lying around.
"Brother Cheng, this tree is ten years old...this tree is nine years old..."
The cheerful chirping sounds kept ringing, surrounding Han Cheng.
Shi Shi, who embraced the dream of flying to the sky, taught those from the original bone tribe who had learned a few words in Mandarin and gathered around to watch Lame use iron tools to make utensils.
Not only him, but other people in the Qingque tribe also like to come here when they have nothing to do.
There are also many people who are looking forward to taking a break from working lame, so that they can have a chance to touch iron tools.
The teaching of the primitive bone tribe has now begun to differentiate.
Just like the people of the Qingque tribe who were taught by Han Cheng before, after the adults mastered some characters, they began to let them make their own choices. Those who wanted to learn characters could continue learning, and those who didn't like learning sacred characters didn't have to learn them.
Learning divine characters is no longer a rigid target.
Regarding the promotion and popularization of Mandarin, no discounts are allowed.
These are all aimed at adults. Minors who do not need to work all day can still study for nearly three hours a day as before.
Bai Xuemei did not learn from them. As Han Cheng's chosen child bride, she has been eating Han Cheng's small dishes.
I don't know if it's because of men's possessiveness, but Han Cheng doesn't want Bai Xuemei to have too much contact with other men, especially those who are about the same age as her.
He ate and lived with the Son of God. Although Han Cheng never said anything explicitly to the people in the tribe, under the subtle influence, the people of the Qingque tribe treated Bai Xuemei differently from others.
At the beginning, Xing, Xiaomei, Xiaoli and others who were about the same age and wanted to sleep with Shenzi were a little dissatisfied with this, but now they have become accustomed to it.
For primitive people, things similar to love, which are still in a state of ignorance, will not occupy too much part in their lives, especially those tribes who work hard for food all day long.
Love in childhood is more like a storm in summer. It comes and goes quickly. After some unpleasant experiences, Xing, Xiaomei and Xiaoli basically no longer think about sleeping with Shenzi.
.
The stone squatted on the ground and fell to the ground while touching it with his hands. It was sawed open and the flat wood section was cut. His thoughts were flying wildly, and there was some sudden enlightenment in his eyes with joy and impulse.
He has a strong interest in astronomy and calendars, but has always been confused about how old he is.
Because when he was born, the calendar had not yet appeared, so there is no way to know the specific age.
This is also an important reason why most tribes determine whether they are adults based on their height.
Regarding how old he is, he has been thinking about it for a long time, but he has no solution, but now, he suddenly has a clear understanding.
After a tree is cut open with a saw, the age of the tree can be determined based on the circles in its body. Can the same be done for people?
Will it hurt too much if this is the case?
Thinking this way, I suddenly regretted it.
Those who came to attack their own tribe and were killed should not be burned directly. It would be better to cut them open first and see if there are any small circles on their legs...
"Stone, what are you thinking about?"
When Han Cheng saw Shitou squatting there silently, he asked.
Shitou was stunned for a moment, then told Han Cheng what he had just thought.
After hearing this, Han Cheng's mind was filled with confusion and he had the urge to retreat.
In the former case, there was a witch-bred rabbit, and now there is a stone that wants to cut off a person's legs to test their age... Do you want to be so crazy?
