Movable type printing, the process principle is so simple that people can see it at a glance, however, there is a reason why this technology could not be popularized so quickly in ancient times.

First of all, before the early Tang Dynasty, the paper that can be printed is a very valuable item, and most of the books exist in the form of bamboo slips, which is destined to be unable to play with printing.

But Happy Village has solved this problem, and the cost of their homemade paper has been low enough to be used by the villagers to wipe their buttocks, of course, the aborigines of Happy Village are relatively rich, which is nothing. But if they knew that Sun Xiangfu's birthday gift to Yu Shinan was 500 sets of Four Books and Five Classics and 1,000 sets of Yu Shinan's re-compiled Chinese Pinyin textbooks, they would definitely be able to pick up the bottom of the cost of papermaking in Xingfu Village.

You know, these are thousands of paper books, and the market price of one is one or two, and for a birthday, give a gift worth nearly 10,000 yuan, which is too generous.

"Wonderful, this thing is wonderful, at this rate, at least hundreds of books can be printed a day."

Chang He and a few other generals didn't care about books, but everyone like Xiao Yu only felt that their eyes were shining, and while praising them, they quickly chased after Li Shimin, who had already walked forward.

"Who created this law?"

Li Shimin's words were not angry and arrogant, but the clay seal craftsman was a little flustered.

"Your Majesty, this thing was conceived by Sun Zhengming, the head of my farming sect, and made by Wang Fu, the master of the grass people."

Movable type printing is Sun Xiangfu before going to Shuozhou to let Wang Fu grope out the approximate, this thing needs to be engraved in reverse clay printing, after a few months of improvement, only two months ago, so that the whole process can be quickly typeset and printed, which is just engraved movable type mud, have tested a lot of kinds, and Sun Xiangfu paid for this technology, just a sentence 'I want a technology that can use a single movable type typesetting and printing'.

"Where is Wang Fu?"

"Well, I'm going to Shuozhou with Mrs. Zhang."

In Li Shimin's view, a craftsman like Wang Fu who can do movable type printing is already a great talent, but Wang Fu is not ranked high in the sequence of Happy Village, in the words of Sun Xiangfu, their generation can only be regarded as a hands-on person at best, and those who can really engage in research and creation are still children like Sun Deshou who have not yet grown up.

When he opened a book with three words written on the cover of the practice question, he was immediately stunned by the dense number symbols inside.

"What are you printing here, and why are they all algebraic symbols?"

"Back to Your Majesty, this is a math practice book, not a book, it is a problem to be sent to students to do, there are also geometry practice problems here, not only students, we craftsmen must also be able to do, 3,000 math practice problems every month, it is a quota to be printed."

"Three thousand copies a month?"

Li Shimin was shocked by a number again, listening to the meaning of this craftsman, this kind of exercise book seems to be done every month, and it is not necessary to do it once you do it.

"Yes, we apprentices, craftsmen and children in the village, as well as children from several farms in Luoyang, Yangzhou, and Yizhou have to do it, and I heard that there will be a big exam every six months in the future!"

Later generations of Sun Xiangfu's math results are not good, he believes in a truth, the sea of questions tactics, other things may have to read more and understand more, mathematics is the need to do more questions, reduce the error rate, because the answer to mathematics is often the only one, when people are used to precision, precise, then do things, it will be twice the result with half the effort.

"But I see that the handwriting on your exercise question is so small, how can you answer it?" Li Shimin also has some understanding of Sun's algebra symbols, and when he saw the font on it and the empty space left, he was a little puzzled.

"That, the people in our village are accustomed to using quill pens and quill pens, these pens consume less ink and have small fonts, so you can answer on this." The little craftsman scratched his head and replied.

"Then where did you get so much money to buy paper in your village? No, your paper is not Shuzhong hemp paper, but the texture is also very good. Xiao Yu followed Li Shimin's words and raised his own questions.

However, Li Shimin was not surprised by this problem, Yu Xiuer had already sent a batch of paper into the palace when it was made, and later, Happy Village also developed a soft toilet paper, which is now very popular with the nobles in the palace.

If you want to say that Sun Xiangfu is willing to spend money on his own people, Li Shimin believes it, Li Shimin has not eaten Sun Xiangfu's vinegar in the past two years, from the equipment of the guards, to the usual food, and the objects used, Sun Xiangfu is more luxurious than him, the emperor, so why don't he get angry!

"This lord, this kind of paper is made by our Happy Village itself, even if it is used book paper, it can also be recycled, and there is a papermaking workshop next to it, you can go and see it yourself."

The primary school apprentice didn't know Xiao Yu, but the questions he raised were very easy to answer, so Li Shimin and the others went to the paper workshop next to them.

In fact, half of the original 4,000 acres of land in Xingfu Village have been turned into houses, and if you add the houses built along both sides of the river to the end of Xiaoheji, it is already devouring the land of the surrounding villages.

However, before devouring the land, it first devoured the population, and the people in the surrounding villages are now rushing to move to the two cement roads along the river, and build a set of brick houses along the cement roadside, which is not only clean to live in, easy to enter and exit, but mainly to be able to connect with the happy village, which can receive more information, and it is much easier to find a job and make money.

Piles of dried white paper are neatly cut, and workers are packed into boxes according to the size of 30 or 50 sheets, which have not been sold on the market but have been stocked for a long time.

Xiao Yu, who also has a hobby of calligraphy, wanted to know the cost and selling price of this kind of paper very much, so she pulled a craftsman steward with the word "agriculture" written on her chest and asked, "How much are you going to sell for this paper?" ”

"Back to Lord Xiao, the village chief has no sales plan at present, but it shouldn't be too expensive, and the cost of making a box of paper is less than the usual money."

A box of paper, several bundles of large and small, hundreds, is actually less than the cost of the usual money, which is too subversive of Xiao Yu's perception of paper, you know, even the cheapest hemp paper, such a large box, at least ten times.

The reason why the paper made in Xingfu Village is so cheap is that they use coal with higher temperature and longer burning time as fuel for melting pulp, and second, because the materials used to make paper do not need the red hemp grown in the farmland, only need some bellflower, tree bark, and even dead grass.

Reducing the manufacturing cost first, and then pursuing exquisiteness, this is the policy set by Sun Xiangfu for the papermaking process research group.

"Why do you make such cheap and easy paper, but don't sell it on the market?"

"Have you ever thought that once a large amount of white paper in our Happy Village is put on the market, and the hemp grown by tens of thousands of hemp farmers in Shuzhong is unsalable, how will they make a living?"

"Uh, this ······"

Xiao Yu was asked all of a sudden, even in modern society, in order to feed more people, the country has to let some backward enterprises continue to exist, let alone in ancient times when there were not many choices.

Previously, Sun Xiangfu and Webster cooperated in the development of coal, and also took into account the original farmers who made a living by collecting firewood, and agreed with Webster that they must be recruited to work in coal workshops.

The rise of a new industry, for the old industry, may have a devastating impact, without consideration, you can't start indiscriminately, Li Shimin realized Sun Xiangfu's good intentions, knowing that he is a person who can maintain restraint in the face of interests, and suddenly his mood is much better.

"A few Aiqing should go to other workshops with me to have a look!"

Since Li Shimin spoke, Xiao Yu did not dwell on this issue, and followed Li Shimin's footsteps to a large courtyard next to the papermaking workshop, which is one of Li Shimin's most important industries, the smelting workshop.

Smelting technology is the core of a country's development, even in later generations, it is also like this, therefore, there are layers of guard handles at the door of this workshop, and people without permission are not allowed to approach, of course, here, there is no fortification for Li Shimin.

Ma Lin is the manager of the smelting workshop, but he also went to Shuozhou with Yu Xiu'er, so the person in charge here is his apprentice, Marseille.

And being able to wear a shirt with the word "peasant" written on the chest and back in Happy Village is a proof of strength, and Marseille wears such clothes, although he is a blacksmith.

Gears, pulleys, hinges and other delicate ironware are innumerable in the workshop, and those civilian farm tools and pots! Shovel! It can't be made here at all, and a few blacksmith shops in Xiaoheji can make it.

This is a place where the core objects are made, and even the smelting technology, such as the entire power system on a hydroship, for example, where the optimal proportion of high-carbon steel has been found after hundreds of trials.

Li Shimin's eyes were first placed on the set of wooden weapon racks, where there was a long-handled Mo knife of the Tang Army system, with a demonic pattern on the edge of the knife, and he knew that it was a sharp weapon at a glance, and he was accustomed to the military He felt the extraordinaryness of this Mo knife.

"Who made this sword?" When Li Shimin spoke, one hand was already holding the handle of the long knife.

"It's the grass people." Marseille bowed in reply.

At this time, Li Shimin, who was holding the handle of the knife, changed his face and asked, "The shape of this knife is the same as that of the standard Mo knife, why is it so heavy?" ”

"The materials and forging processes used for this knife are somewhat different, and the toughness and sharpness are not comparable to ordinary war knives." Marseille said with some pride.

It is precisely because of the creation of this Mo knife that Sun Xiangfu authorized him to join the farm before a year of learning, to say that this knife is extraordinary, first of all, you have to talk about the steel used to cast this knife, which is a special Indian Uzi steel.

In the sixth to fifth centuries B.C., the ancient Indians mastered the technology of ultra-high carbon steel, and last year Xi Junmai brought back his wife from India, there happened to be a family that had been smelting iron for generations, combined with some secret recipes she dictated, and finally had this ultra-high carbon steel with a carbon content of 1.5 to 2 percent, which was later known as Damascus steel.

This kind of steel is much heavier than the same volume of steel in Datang, so Li Shimin will be surprised after he starts.