Sure enough, Ah Yi paused for a moment, and let everyone understand it, and continued to say: "This kind of ice can also form a convex lens. Therefore, the word "现" originally meant that I used objects as marking. The bamboo tube represented by the three horizontal lines, and then the water surface of a bamboo tube water formed into an ice surface, expanding and expanding towards the upper and lower sides. I made the marking. Therefore, the word "现" does not refer to water or ice itself, but to the bamboo tube containing ice. Therefore, this word also means that after water becomes ice in the bamboo tube, it will form a convex surface. If connected by arc, it is a convex surface. At the same time, this word also represents that three rays of light pass through the convex lens, converge into a point, gathering light like flames."

Undoubtedly, this is why the word spirit is created, which is the exquisite meaning of the convex lens made of ice that can concentrate and ignite.

For this reason, the word "Gui" comes from this. The radical on its left is actually composed of , and arcs, indicating light and shadow, through convex arc surfaces), and is classified into one point by three lines.

Come back, a wanderer wandering around the world!

What I mean is to return to the Gen point.

The seeds of China, the Gen of China!

Ah Yi finally said: "This kind of convex lens can also represent water changes.asxs. I will use the shape of the convex lens to represent the number zero, which is 0."

What a wonderful 0!

It turns out that the number 0 comes from!

"Ah! Ah! Ah! Ah! Ah, so awesome!" Zhang Jingtao used it to praise him.

Ah He smiled with a dazzled eyebrows.

He squeezed his eyes at Zhang Jingtao again.

If someone else comes, it will definitely be unclear why he squeezes his eyes.

Zhang Jingtao understood that although Ah Yi talked about the convex lens and the convex lens, he did not say the word "spiritual" in detail, and did not say thoroughly that he could use a convex lens to make fire.

Ah Hee only said that convex lenses can gather light like flames.

These prehistoric students who listened to the world would never think that using convex lenses can also make fire. It is not easy for them to understand the civilization that Ah Yi talks about.

Fortunately, what Ai created is the only civilization and the most easily spread knowledge in the world. It is both derived from life and extremely exquisite. These students can understand it, especially those more than 300 children.

Then, the children saw the astigmatism effect of the concave lens in a mysterious atmosphere.

Gathering into thorn, dispersing into three.

The three end points of the three horizontal and two sides of the three characters are arranged into two concave surfaces (which form a concave lens with divergence.

To this end, Ai used s to represent divergence, a to represent the depression of the lake surface, n to represent the three-dimensional medium that can pass through light, and pronounce it in combination for san.

The emergence of this three characters completely represents the combination of words and derivative usage.

Moreover, this not only represents addition where one plus two equals three, but also represents subtraction.

Three removes one again, and naturally becomes two again. For this reason, this subtraction is represented by one.

The word "salty" means that the water body "factory" is reduced to the mouth of the small lake that can be explored to the end with a single "ge", and thus it has become a salty salt lake.

So, why does the small mouth here mean to become smaller?

This is just a comparison of the locations of the water body "plant" and the small lake "hole" and you will understand that the factory body completely accommodates the small mouth.

In one word, there is a contrasting relationship, which also represents the understanding of nature, which is extremely exquisite.

It also contains clever life techniques for how to obtain salt water in nature.

It can be imagined that in modern times, foreigners who have not created the word "one" and only know one or other bird singing can invent the subtraction symbol "one".

This once again proves that mathematical symbols all come from the only civilization of mankind, the Chinese civilization.

However, how did the more mysterious word "four" come from, Ah He didn't continue to say it.

Although Zhang Jingtao could not help but read through the bamboo slips that Ai recorded the text in the afternoon, he knew that Ai had created a lot of texts in recent days.

When he saw the word "Xi", he flew over and didn't look at it. Finally, his soul was stable and he was not forced to fall into the Warring States Period.

After three years, Ah Yi only spoke a lot of words like "mouth" and "big".

On the second day, Ah Yi took Mrs. White Bone and the thirty-one women to watch their most concerned issues.

That is the food guarantee that Ah Yi mentioned.

They not only saw various animals in captivity, but also fish ponds, mulberry forests and farmland.

Ah Yi first introduced the captive raising and gave several women salted duck eggs.

Salted duck eggs are a very magical food.

This is a kind of food that can explain where animal husbandry civilization comes from than peeled eggs.

The human race who tame chickens and ducks and the source of animal husbandry technology is almost natural for Chinese people to pickle duck eggs and get salted duck eggs.

Moreover, the only one who can play with salted duck eggs in the world is the Central Plains of China.

Even according to custom, it is clearly seen that salted duck eggs originated from Jiangnan, which is accustomed to drinking porridge.

So, it is very magical that foreigners who seem to be good at marinating various meats do not have salted duck eggs.

Because they have no animal husbandry, they only have a pickling culture that comes from pure natural hunting.

Even though they are used to marinating various meats, they don’t think of pickling duck eggs, because they don’t have animal husbandry and will not have any extra eggs for them to pickle.

How many eggs can be harvested when hunting in the wild? You can eat them just by getting them.

Afterwards, foreigners learned about animal husbandry, but because they only stolen civilization, they never thought that duck eggs could be pickled.

Therefore, foreigners from any country will not make salted duck eggs.

Another proof of where a very interesting civilization comes from.

However, Ah Yi did not introduce mulberry trees, obviously he did not intend to tell everyone the secret of silk, one of the core of the Silk tribe. Because silk is extremely tough, Ah Yi was already making longbows with silk. This secret has been almost preserved in modern times. For this reason, in modern times, only the people in the Central Plains could make silk. There was no silk in foreigners, and foreign silk was all imported from the East.

Mrs. Baigu didn't notice the leaves that could only be eaten when she was hungry, and only asked about the farmland.

Ai said: "There are various plants in the farmland. I found that after they are arranged to grow together, they can grow well, such as potatoes. In this way, we can have a lot of food."

Of course, the people of the prehistoric world do not know nothing about plants. In fact, the people of the prehistoric world know much more about which plants can be eaten than modern people.

For this reason, plants will wither, just as people will die without water, and Mrs. White Bone knows it too.

Mrs. Baigu asked: "How to ensure that there is water in the farmland?"
Chapter completed!