Life is done by doing, not by saying. Swallows are still known to build spring nests.

It's just that after two days of travel, they are a little tired, and Jian Chen asked his people to rest first.

I lived in warm rooms, and every room was full of people.

The old men and children of the Shi tribe also moved in, but the young people were going to rest under the straw hut where they ate.

He didn't sow the seeds this time, so he wasn't very tired, so he took Yu Qian'er and a few little brothers to find a large bluestone slab in the stone pile under the cliff, and several people carried it back together, and stood in the most conspicuous place in the courtyard.

Draw a round moon on the top row of the bluestone slab with charcoal, the moon was round last night, and use this instead of the date.

Characters or drawings such as fish, deer, sheep, and tubers were written vertically underneath, and a simple stone version of the Eco Sail form was made.

"Yu Qian'er, I will look at the moon every night in the future and draw the appearance of the moon. Then write down the amount of food each day and make a record. ”

Jian Chen also had a deep meaning in doing this, recording it so that Yu Qian'er could learn to plan and distribute, and also know how much food was left in the tribe. The amount of food determines tomorrow's work: is it to fish and hunt the primary industry to ensure survival? Or can you make time for the development of the secondary industry?

Yu Qian'er understood that this was the same way that the old grandmother knotted the rope before, but she thought about it for a while and still voiced her doubts.

"Brother, there are big and small fish, and there are dozens of small fish that are not full of big fish, so what should I do? Do you have to memorize how many items? ”

Jian Chen looked at his sister with a smile and asked, "What do you say?" ”

"I don't know."

Yu Qian'er tugged at her braids and shook her little head, as she would do whenever she couldn't figure it out.

Jian Chen took the small ladder, took out a piece of smoked meat hanging from the grass shed, took out a stone knife and handed it to Yu Qian'er and said, "Of course there is another way. Well, you cut it with a knife and cut it into a piece that you can eat about enough. ”

Yu Qian'er took the stone knife, looked at this smoked pork leg, pondered for a while, and cut off a large piece on it.

"Well, that's enough to eat. But you don't have enough to eat. ”

"Yes, so whether you are full or not is not to eat a few fish, but to eat a lot of fish. Are you right? ”

"Yes."

"As for you, you and your brothers and sisters will find a way to make a gravel as heavy as this piece of meat and put it in a cloth bag. If you can make sand as heavy as this piece of meat, I'll tell you what to do. ”

Yu Qian'er looked at the bacon and thought to herself, this is not easy to do, how can you make sand as heavy as this piece of bacon?

Jian Chen called the rest of his younger siblings and asked them to figure out a way with Yu Qian'er. He went to count the rest of the tribe's food and all the property, and most importantly, the population.

Now his tribe does not have a surname, and the surname needs to be discussed by the tribe, but the people of Huaihua can definitely be regarded as a member of their own tribe.

Now there are 210 people in the clan, 130 are young and strong, more than 20 are disabled, sick and injured, and the rest are old people and children.

There are more than 90 people in the tribe surnamed Shi, and more than 60 are light and strong, and the labor force that can be called upon by them is now close to 200.

In a village of more than 300 people, the daily food needs is about seven or eight hundred catties, which is equivalent to four or five sheep plus tubers and wild vegetables, as well as a large number of fish.

Salt is not eaten much every day, and the saline-alkali soil dug back can support it for a long time.

There are also four jars of maple sugar, and only maple and birch trees that have not yet sprouted in the spring can be picked, and these candies will not be eaten until next spring.

A jar of honey and a jar of beeswax. The former can be eaten, and the latter can be used.

There are still three or four baskets of dried fish, and there are obviously more live fish in the pond, and some need to be caught, otherwise it is easy to suffocate due to lack of oxygen.

Chen Jian also saw the red fish that Yu Qian'er said, it was very eye-catching, with a beard on the side of its mouth, it must be a carp. He decided not to eat this fish and keep it for the next generation.

The lotus roots in the pond have also begun to sprout, and the water on the shore is very shallow and the temperature is very high, so it is the season for growth, but I can't expect to eat it for the time being.

That's all you can eat, and tomorrow you have to go hunting. With today's tools and technology, and the fact that there are no fish in the water that have not been caught, it is possible to free up three to five days a day for things that have nothing to do with food.

Relying on water to draft, for a long time Chen Jian was ready to put the main food on the fish. Tuber seeds and the like, as much as possible, are stored as seeds.

Today's fishing method is only to use wicker baskets and river forks to fish, and he can weave fishing nets, but the current fiber rope is not good at all, too thick and not soft enough.

It's early summer, and we'll have to wait another three months for nettles and grass hemp to grow. At that time, the wood fibers can be rotted before the hemp silk can be extracted, and the cloth and thread in the real sense can appear.

He doesn't have the ability of the druid in the fantasy novel, so he can make plants grow faster, so he can only rely on time.

When he took out the charcoal on the slate and planned the future assignment of tasks, Yu Qian'er shouted at him from afar: "Brother, come here, we have found a way!" ”

Jian Chen was startled, and said in his heart that this is impossible.

Yu Qian'er took his hand and ran to a small tree, and Jian Chen couldn't help but smile when he saw it.

There was a piece of bacon hanging from the branch of this small willow tree, and she was bent over tiredly, and Yu Qian'er weighed it, and the willow branch hung down to her shoulder.

Yu Qian'er couldn't wait to say: "Look at you, I took the meat away, and it was straight again." ”

When she straightened it off, and hung up a small bag of stones, the willow branch bent down again, but a little lower than the last, and she took out two pieces, and then came to her shoulder.

"The pebbles in here must be as heavy as the bacon!"

Yu Qian'er swore that she was quite proud in her words, but she just looked at her brother laughing there, and snorted a little angry.

The idea is right, that is, this error is only afraid that one pound can be worse than two taels, but it is also rare.

"Brother, are these two the same weight? Can you tell me what to do now? ”

"Well, it's the same weight. Okay, call my brothers and sisters over, we have to do something very important. ”

Yu Qian'er laughed and ran away, Chen Jian found a piece of wood of the same thickness before and after, found the balance, folded the rope in half to select the middle point, dug a hole with a stone in the middle, and nailed a thin piece of wood into it as a shaft.

I found a few leftover pieces of mud, built them, cut out a mud pit, and put this simple balance on it.

I tried leveling, smeared some dirt on the light part, and finally balanced.

The accuracy of this is estimated to reach about one or two, and now the clansmen don't need too small units, and generally speaking, it's okay.

Yu Qian'er ran over with her younger brothers and sisters, and looking at this balanced log, Yu Qian'er seemed to understand.

Chen Jian hung the bacon on one end and the stone on the other, which was not balanced, but it was not about the same.

"It's pretty good, almost as heavy. Do you understand? ”

"Understood."

Not only Yu Qian'er, but also a few children also understood.

"Then go ahead and make ninety-nine cloth bags of the same weight, all filled with stones."

The younger siblings quickly got busy, weighing bags and stones, taking them out and adding them little by little.

Chen Jian took a stone knife and cut a slender pine wood three fingers thick, scraped off the pine bark, and smeared the surface with boiled pine resin.

A stone was added to the front end as a counterweight, and a buckle was made of nitrated leather and stuck in the front of the wood as a carrying point for the scale.

Because of the weight of the stone, even if the distance behind the buckle is very long, the buckle still hangs down in front of it.

I chose a stone to weigh the weight, made a hole, put on a rope, and carried these messy things to my younger siblings.

By this time there was already a large pile of stones and cloth bags on the ground, and after counting the almost, he called the children over.

He found a stick and put it in the leather buckle, let the two younger brothers carry it on their shoulders, put the scale on it, and gently pushed it to find the balance point, the so-called fixed star.

When the front end and the back end were balanced, Jian Chen asked Yu Qian'er to carve traces where the scales were.

Then he hung the bacon in front of him and moved the scales back a little, carving a mark.

Taking off the bacon and replacing it with a cloth bag, Yu Qian'er naturally didn't move the scales and said, "It must be flat." ”

Sure enough, the children immediately cheered.

Subsequently, two cloth bags, three cloth bags, and four five......

Each time you hang an extra one, you move the scale back to carve the traces. By the time all the weighed stones were full, the scales had been drawn densely.

A regular scale will certainly not be so simple, it needs to be dried and painted with pine resin to ensure that it will not be deformed by moisture. This kind of large lifting scale can weigh dozens of catties of things, but the error is too large, and if you want to weigh small things, you must be small.

But now it's okay to make do with it, he has demonstrated the idea of making scales to his younger siblings, and Chen Jian feels that these children will figure out a better way.

The children looked at this strange thing curiously, and Jian Chen took the piece of bacon and said, "There must be a name, right?" What do you call it so heavy? ”

"Full?"

"A piece of meat?"

"A pig?"

The younger siblings are babbling all sorts of weird names, and as the name of this unit of weight, the more they say it, the more outrageous it becomes.

According to what Jian Chen said in his previous life, he didn't know how many catties or grams of this piece of meat was.

But the unit of weights and measures does not affect science, g is 9.8 meters of the second of the second, it can also be 29.4 feet of the second of the second, it can also be any unit, as long as the accuracy is enough.

The weight is the same, a pound and a kilogram, as long as the accuracy is guaranteed, it can actually be converted, it is nothing more than who has the right to speak in the future.

He pinched this piece of bacon and pondered for a long time and said, "Otherwise, let's weigh a pound like this." ”

"Why?"

The children didn't understand, Chen Jian spread his hands and said: "There is no reason, this is what I thought of, I can call it whatever I want." When you think of something that others don't know, you can also choose your own name. ”

"Okay."

The younger siblings remembered the title and turned their attention to the scale.

Yu Qian'er grabbed the rope in front of her with both hands and shouted, "Look at how heavy I am!" ”

The children immediately lifted the scales, and a few others stared at the scale behind them, counting for a long time and shouting, "You have seventy pounds." Come down, change me, change me! ”

This novelty quickly became a favorite toy for children, weighing anything that seemed to be able to be weighed.

Wolves, geese, and piglets could not escape their hands, and one by one they were caught and tied to ropes, giggling and screaming at all sorts of numbers.

After a while, Jian Chen pointed to the bluestone slab and said, "Now, you go and weigh how many dried fish we have and write down the number." ”

The children were in the mood, and they turned around to get dried fish, but they were stopped by Chen Jian again.

"Wait, I'll give you a question, and if you can make it, I'll give you a fun one, it's very fun."

Jian Chen thought for a moment, pointed to a small pile of sand and said, "I want to divide this sand into sixteen parts, and sixteen parts must be the same." Also, I want you to make a scale. Don't ask me, think for yourself, when it's done, I'll give you a fun one you haven't seen before. Also, don't forget about business, remember to mow the grass and feed the piglets! ”