In Li Yuanjia's view, things like quilts have to wait until November before they can be used.

So he won't make the same mistake as before, giving away the quilt when the weather is not hot, and then letting others put it on the shelf. Then when winter comes and the weather gets cold, he will give out the silk quilt that works.

Take it out, this quilt will make your life at the bottom of the box!

but……

"The key point is still land... no, it should be said to be productivity!"

Sitting in his study room, Li Yuanjia took a charcoal pen to write and draw on a white paper, his eyes gradually narrowed.

The real future of cotton will definitely not lie in the court!

Regardless of the emperor, the nobles in the harem, or even the many ministers in the court, I am afraid they are not that concerned about cotton. Because they themselves have silk floss that represents comfort, and leather that represents luxury.

Qiu, cotton doesn't mean much to them.

Those who really need it should be ordinary people.

Only poor people who are trying their best to stay warm in the winter, or ordinary people who have to wear layer after layer of linen to keep warm, will need something as soft and warm as cotton.

But unfortunately, cotton production requires land.

In this era of low productivity, land is the most precious resource. It is difficult for Li Yuanjia to imagine how he can convince the nobles to use part of their precious land to grow cotton instead of growing food.

When it comes to food, clothing, housing, and transportation, even though clothing is ranked before food, the first element of survival is still food. As long as it doesn’t freeze to death, it’s fine, right?

As for a few poor people occasionally freezing to death in the dead of winter, who cares?

Otherwise, why would cotton, such a good product, have to wait until the Ming Dynasty was established before Zhu Yuanzhang used coercive means to popularize it throughout the country?

Therefore, only when grain production increases will there be room to grow cotton.

It's just that it's not easy to increase grain production these days. Even if Li Yuanjia came up with a very mature curved shaft plow, what is the penetration rate in the Tang Dynasty now? Ten percent? Or twenty percent?

?There are also new types of rollovers and barrel trucks that can increase the irrigation rate. I am afraid that it will take ten or hundreds of years to spread all over the world.

Moreover, the development of agriculture cannot be achieved by just relying on two new tools. Otherwise, the curved shaft plow and the barrel cart both appeared in the Tang Dynasty. How much has changed?

After thinking about it, Li Yuanjia looked helpless.

"I have no choice but to take it one step at a time."

Finally, he dropped the charcoal on the white paper, and Li Yuanjia's eyes gradually became profound: "Papermaking, movable type printing, glass, curved shaft plow, turning cart, barrel cart, and of course Arabic numerals, etc., how much can be done

No matter how much you do, as long as your life is not in vain... Well, speaking of it, the first two volumes of "Mathematics" should be printed soon, and then I can put them into Xinhua Bookstore to test the water."

Li Yuanjia's daily worries and sense of powerlessness do not have much impact on the normal operation of the world.

However, under his urging, Li Zhong quickly started printing the first and second volumes of "Mathematics" because the engraving had already been done, and Li Zhong and the others had also figured out the engraving printing process.

, the printing speed of the two books is very fast, and the task of three hundred copies of each can be completed quickly.

Li Yuanjia plans to let the two newly printed books appear quietly on the shelves of Xinhua Bookstore.

To be honest, I don’t have much confidence at the moment.

After all, mathematics is really "of no use" to most people these days, and only a small number of people, such as accountants or people in charge of statistical data in certain yamen, can master it. But if they

If they are willing to learn, another problem will arise, that is, they can’t use it themselves, and other people must also use Arabic numerals to make sense!

Just like the Ministry of Household Statistics, which collects statistics on the world's money and food, all the subordinate states and counties send traditional writing methods. Just because they know that Arabic numerals are simple and convenient to use is of any use? The little time saved is not enough to convert between them.

So much time!

Not to mention that if you want to use those formulas, you must use horizontal arrangement, which challenges the bottom line of readers even more.

Don't think that scholars are very generous. Even in the inclusive and tolerant Tang Dynasty, it is very dangerous to change their inherent ideas rashly. In other words, the subject of mathematics is not that important relatively speaking. If you change

into something else...

Therefore, there is no need to make any big publicity.

Quietly put it in the Xinhua Bookstore to test the water on a small scale first, and then wait until the conditions are mature before thinking about large-scale promotion. As for when the conditions are mature, Li Yuanjia decided to take it slow and wait and see.

"How come so many senior time travelers in the novel can do all that so easily?"

Thinking of these annoying things, Li Yuanjia felt his head hurt.

If you just take out the movable type printing invented by the Song Dynasty, it can replace the engraving that will be used for thousands of years in the future? If you make a few cotton-padded clothes from cotton, the emperor can help promote it? Arabic numerals and so on are even more powerful.

Once you come out, you can conquer the civil and military forces of the entire dynasty, and instantly become a master of mathematics...

When it comes time for Li Yuanjia to travel through time, it will be extremely difficult to overturn the car!

Although the status of the craftsmen is not high, no matter whether they are blacksmiths or carpenters, they are all "highly skilled talents"! If ordinary people want to do this, they must first serve as apprentices to the craftsmen for several years, which is a free and suffering labor force.

, Only in this way can we learn the real technology, and with the existing carpenters in Datang, how could these complex wooden machines become popular so quickly?

What nonsense!

The slender charcoal pen spun quickly in his hand, and Li Yuanjia had no idea how many thoughts were running through his mind at that moment, before finally converging on one sentence.

The bustle in the world is all for benefit; the hustle and bustle in the world is all for benefit.

The word profit is fundamental!

This sentence from Chapter 129 of "Historical Records", "Biographies of Huo Shi", is the eternal truth for thousands of years!

The cost of movable type printing is too high and too difficult to use? Then let Li Zhong and others improve it so that it can replace woodblock printing. Don't like Arabic numerals and can't stand horizontal text? Then let the literati see it used like this

That’s the advantage! Do you think cotton is not worth the effort to grow? Then let the people of the world eat enough first, and then have the remaining money to buy cotton clothes and quilts, then the landowners and businessmen of the world will naturally think of growing cotton, and then

Sell ​​to these people...

"So, what to do?"

Thinking of the crux of the problem, the charcoal pencil in Li Yuanjia's hand finally stopped.
Chapter completed!