After thinking about it carefully, Zhao Si found that it seemed that many unexpected things could come in handy in this era.

Even modern operations such as addition, subtraction, multiplication and division, and even equation expressions......

Something that is taken for granted in modern times seems to have an unexpected spark in this era.

Wang Li didn't mean to despise Zhao Si's words, and when he heard the four words of Li Zaiqiu, he opened his mouth and said, "Is that really the case? ”

"That's true!" Zhao Si nodded.

"When I send someone, what kind of craftsman do I need?" The king asked.

"Carpenter's bar...... By the way, isn't salt expensive? Zhao Si asked again.

"It's okay, it's not too expensive." The king replied.

"How much is the salt that was placed on the shore in the shape of a tiger squat?" Zhao Si knew that Wang Li was a big dog, so he deliberately opened his mouth to ask again.

"It's about a few hundred dollars a piece, depending on the size." Wang Li thought for a moment and replied.

"It's not expensive?" Zhao Si rolled his eyes.

The purchasing power of the currency of the Qin Dynasty is not bad, a few hundred dollars, buy a piece of salt less than the size of a fist.

"What is the price of the salt that the people eat every day?" Zhao Si continued to ask.

"I don't know......" Wang Li scratched his head.

All he eats at home is shaped salt, the most high-grade salt in this era.

That is, the salt is naturally agglomerated or artificially made to form a lump of salt in the shape of an animal.

Shape salt is the standard for high-grade people in this era.

Zhao Si secretly thought in his heart, he really had some ideas about ancient salt making.

Salt is either saturated crystallization or charcoal grass ash adsorption filtration.

Salt is everywhere, in fact, the ancients have known for a long time that seawater contains salt.

It's just that there are too many crystalline impurities naturally precipitated, and there is really a lack of filtration means, if it is just dust impurities, it doesn't hurt, and too much heavy metal content is really fatal.

"Where does the salt come from today?" Zhao Si continued to ask.

"It is mostly produced in Qidi, and I heard that the sea is boiled into salt over there, and the rest of the land is more mixed, either plate salt, well salt, or salt mines.

Among them, the well salt is the most top, the sea salt boiled out of Qi is second, the plate salt is again, and the rest is the salt mine, and the quality is uneven. ”

"Do you have a way to make salt?" Wang Likou asked, with Qu Yuan plough first, and Zhao Si took the initiative to ask for a craftsman, Wang Li had already roughly expected it.

"Hmm!" Zhao Si nodded.

"If nothing else, it shouldn't be too much of a problem to bring the price of salt down."

Whether it is saturated crystallization method or grass ash charcoal soil filtration, it can make many originally inedible salts in this era edible.

Salt is not a few, boiling sea for salt can be traced back to the Spring and Autumn Period and even further period, Qidi has always been a large salt producer, but at this time there is no salt drying method, the price of salt remains high, the output of salt plate salt is too small, the output of salt mines is large, but heavy metals are abundant, and there is a lack of filtration and purification means. Easy to eat dead people.

Even if the ancients filtered, they just used some dense sieves to filter out some impurities that are insoluble in water, and those that are soluble in water are not filtered out at all.

"How much can you get down?" Wang Li also gasped.

Zhao Si really doesn't know...... After all, he didn't know enough about the prices of this era, and the same was true for Wang Li.

Wang Li stopped when he saw that Zhao Si didn't speak, and went to help Zhao Si find a craftsman first.

Zhao Si was not idle, taking advantage of this effort to draw some messy things on the ground.

Vernier calipers are a good thing, copied!

The planer was copied too!

Zhao Si thought of some gadgets first, in this era, saws are considered high-level woodworking tools, and what planers and chicks have not yet been born.

After painting for a long time, there were a bunch of scattered things, there were small tools, there were also large items, and there was a loom, the kind in the book, but Zhao Si didn't know the principle very well, and the meditation for a long time was also a little blurry because it was too long, so some places were not clear enough.

And a deck chair, huh...... It is Zhao Si's own public and private use, and when the craftsmen come out for their own use, it is very comfortable to lie down and sway, and there is not even a stool in this era, so he simply makes a rocking chair in one step and enjoys it.

It's not etiquette to enjoy it in private.

After a while, Wang Li brought in craftsmen, and Zhao Si commanded the craftsmen to make things according to the drawings.

"How small should these things be?" The craftsman asked.

Zhao Si thought for a while, and simply asked Wang Li to ask for some animal skins, picked up the brush and sketched on the animal skins, and attached the size and structure intimately.

Because I was not used to painting with a brush, I also drew a scrapped one, but after getting used to it, I finally made no mistakes and handed it over to the craftsman.

But I don't want the craftsman to be shocked before he even starts working.

"It's so wonderful!"

Zhao Si's composition is a three-dimensional composition, and the specific size is directly marked with line segments on the picture, which looks very intuitive and clear.

Big and small things are clearly marked.

There is also a way to express it separately with dotted and solid lines.

For example, a dotted line of one centimeter represents one centimeter, and one centimeter represents one meter.

Of course, the Qin Dynasty didn't talk about centimeters or meters......

This is actually a lot of progress for this era.

Craftsmen are not fools, this way of composition can be understood at a glance, and they only need to make other things in the future, and they can master a composition method by practicing it themselves.

On weekdays, the work depends on words and deeds, and you can estimate how long and how big you should be.

Zhao Si is not the first to design and compose like this, but Zhao Si is the first to show it to this group of craftsmen without caring about it.

This thing is not a martial arts cheat in the world of Xianxia, basically you can understand the principle at a glance, and you will know how to compose things in the future after a little study.

In the future, just press the map.

Therefore, the craftsmen were only puzzled by the various things drawn on Zhao Si's map, but they were very grateful to Zhao Si.

"Let's go...... I'll take a look at it when I get it out. By the way, get these little things out first. Zhao Si said.

He's talking about verniers, calipers, levels, files, chisels, and things like that.

It's more convenient for these gadgets to get out first and get back to the big stuff.

As for how this group of craftsmen got it? That's not Zhao Si's business, he is only responsible for providing a drawing, and some things Zhao Si even intends to provide an idea.

Because no matter how specific Zhao Si is, he won't be able to.

Anyway, it won't cost a lot of money to keep this group of craftsmen busy, what if it comes out?

As long as it doesn't involve setting up a factory, how much money can Wang Li spend?

Besides, Zhao Si is still ordered to grow grain.

It's normal to have a little request, there is no mess, and it doesn't cost money, who has nothing to do to obstruct Zhao Si?

Wang Ben didn't dare to do this, and even specially told Wang Li to meet all his needs.

Isn't it just that Zhao Si is worried that Zhao Si will not be able to grow the grain, and he will be falsely accused of sitting on the ground?

Zhao Si is very conscious, and if he doesn't take the fast channel, he is mentally retarded.

If you can't get it out, give full play to the clever minds of the craftsmen of this era, and there are things that make it difficult for them. You can't trouble the traverser in everything, this one knows a little bit, that one knows a half way, most of Zhao Si's things are half understood, you can't treat a half-understanding as a complete incomprehension, you have to believe in the smart minds of people in this era.

"Help me find some salt that I can't eat!" Zhao Si looked at Wang Likou and said.

Zhao Si plans to make salt by himself.

Salt and iron heavy equipment, salt and iron heavy equipment, and you know that you have a lot of credit for making this thing.