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As long as you keep digging out a person's shining point, you will feel that everyone in life has cuteness. Approaching Kang Lao, Mao Gengxian, Kang Lao's shining points are really a lot, although Kang Lao has few words and looks indifferent, in fact, he has a heart like gold, and Mao Geng has reverence and pity for such a low-key person. Give Kang Lao a proper package, at least it belongs to Yangshan! Therefore, Mao Geng felt that when packing Kang Lao, it was appropriate to mix some water, which was also for the sake of noble goals, and he did not need to have any psychological burden.

But this time I have to discuss with Mrs. Kang Laofu, and leave this matter to Wen Yuan to do, hoping that he will live up to his mission.

However, before I knew it, I had a lot of things to do, and I suddenly became a lot more stressed. The plan, which could have been carried out in an orderly manner, became a little out of control because of the help of Granny Fu and Kang Lao. There are a lot of things, and the pace naturally has to be accelerated, but I don't have the skills to do it, and I don't have a team that can really help me, so I have to plan well to deal with the things that are coming in front of me.

The cement thing is not busy, and we have to wait for the completion of a curing cycle to confirm whether the cement tested to burn meets the basic requirements, and the clock trial production also has to be put down, not in a hurry at this time.

However, the purification of tea seed oil cannot be left undone, which involves two goals: ensuring nutrition and saving food. Then don't wait to find sepiolite, simply use the ready-made charcoal that can be found on the market to absorb color and taste, charcoal is also a kind of activated carbon, using charcoal to adsorption will definitely lose more tea seed oil, but it doesn't matter, these oily charcoal that completes the adsorption mission can also be mashed for making zuò ink, so comprehensive utilization, the utilization rate of tea seed oil is waved to the extreme.

Mao Geng had operated a mimeograph machine in his previous life, and he was no stranger to the black and slimy ink, the ink was nothing more than a paste made of grease and carbon black and filler, even if the specific formula was not clear, it was not a big problem, this ink did not need to meet the requirements of lead printing ink, as long as it could penetrate through the gaps in the carved wax paper, even if it could be used. I remember that when I operated the mimeograph in my previous life, the dryness of the ink should also be modulated according to the situation, and when the ink is too dry to penetrate the wax paper, I will add some turpentine or something, and then it will be fine, of course, it can't be too thin, and if it is thin, it will penetrate too much ink, and it will be a clump of ink when printed. So the matter of ink, just cross the river by feeling the stones, nothing difficult! If you can't ask for perfection at the beginning, you have to have it first, and then you might as well improve it slowly.

When I think of the filler for making ink, Mao Geng can't help but feel a headache again, the filler materials are all over the world, such as calcium carbonate fine powder and barite fine powder, the simplest is to grind the limestone finely, grind and then grind fine, that really requires a lot of water grinding work. It seems that in ancient times, as long as the grinders passed the test, basically half of the success of the great cause of getting rich -- grinding cement, glass, and coking.

No matter what, other things can be pressed and put away, but wax paper engraving is urgent. According to Mr. He's statistics, more than 80 students have already signed up, and the course is still seven days away, which is quite urgent.

In fact, wax paper printing can even be simplified, and even a mimeograph machine is not needed. In the story of "Red Rock", in order to prevent being caught by the spies, Chen Ran did not use a mimeograph machine, only nailed one end of the wax paper to the board, and used a smooth piece of bamboo dipped in ink to scratch on the wax paper. After printing, the wax paper was burned, the bamboo pieces were lost, and there was no trace. It can be seen that wax paper printing is a rare copycat technology tailored for the ancient cultural circles.

A piece of wax paper, generally speaking, there is no problem in printing 2oo sheets, and rookies can print fifty or sixty sheets when they come to operate, and a well-trained master can print seven or eight hundred sheets, but it is said that the best record is still created by the "Red Star Newspaper" run by Lord Deng, which is said to be able to print 9oo sheets. It's impressive! Deng studied the key to low input and high output so early, and later grasped the economy. Speaking of the number of 9oo sheets, the number of 9oo books published in the Song Dynasty is about the same, shouldn't those booksellers in Jiangsu, Zhejiang, Fujian and Sichuan jump off the building!

But wait! Don't rejoice too soon! The indispensable tools for engraving wax paper are steel plates and iron pens, iron pens are not difficult, even if they are soft and not wear-resistant, grind more, and even prepare a few more, it doesn't matter, but the steel plate is more particular, one is that the steel plate must be engraved with fine twill or cloth grain, and the other is that the steel plate must be wear-resistant, and the steel plate of later generations should be a kind of manganese steel, and the surface should be quenched, which is wear-resistant. Wear-resistant steel plates engraved with fine twill or cloth patterns were a piece of cake in later generations, but in the Song Dynasty, it was quite difficult.

There must be a twill or cloth pattern, and if there is no twill pattern, the wax paper will be engraved when the pen is engraved. Unless someone has a constant feel, carved wax paper on a hard bottom without twill pattern, can also carve out the words that are continuous and penetrating ink, and will not carve through the wax paper to meet the printing requirements, this kind of person may have, but if there is, it is also a god-level person! Of course, such a skill can be done lightly by the later needles.

And quenched wear-resistant steel plates, that, of course, is even more difficult! This is in the Song Dynasty, pig iron and wrought iron are easy to find, but steel can only be obtained by forging guò, and the forged steel is actually not a good material. Well, you have to find a good blacksmith to complete the difficult task of making zuò steel plates.

After consulting Mr. Kang and Mr. He, they were sure that the blacksmith here in Baixi did not have the talent to do this technical work, so Mao Geng had no choice but to ask Wen Yuan to find the fellow returnee who had provided his own carving knife - that is, a homemade iron nail - the blacksmith surnamed Li, it is said that he has some skills in ironmaking, if he can't make such a steel plate, he is afraid that he will have to go to Changsha Foreign Association.

Fortunately, Wen Yuan found Blacksmith Li very smoothly, Blacksmith Li had a son who was about to go to school, and when he heard that Mao Geng was a gentleman at the Baixi Official School, he moved the idea of coming to Baixi Town to make iron, so he sent his son to study. Wen Yuan took matters into his own hands and led the blacksmith Li and his son to Baixi Town.

Li Blacksmith Li Song did not disappoint Mao Geng, after Li Blacksmith's forging and quenching, Mao Geng confirmed that the hardness was improvised. Immediately Mao Geng and Li Song worked together to carve fine lines of steel plates, and finally Mao Geng came up with an idea, that is, to make the most densely spaced zigzag steel bar, grind the sawtooth to a sharp point, and pull it into a small acute angle on the red-hot steel plate, which can pull on a fine notch, so that not only the twill steel plate is made, but also the cloth steel plate is made. Of course, the iron pen is not a problem. This made Mao Geng overjoyed.

The wax paper has long been successfully trial-produced, and there is nothing difficult about the wax paper, that is, the white wax is melted into a liquid, and then the thin leather paper is put into the wax liquid tank for impregnation, and the impregnation thickness of the wax is only necessary to control it. I have to say that the quality of the Song Dynasty leather paper is indeed good, with good toughness, slender fibers, not easy to break, and it is really good to use it for engraving wax paper.

A simple mimeograph machine is also done, using a wooden cylinder, and Mao Geng does not require perfect functions, just be able to print first.

The first test printing was the printing of wax paper squares, and there were some problems during the test printing, mainly the ink, but after some modulation to solve the problem of ink, the printing became a repetitive work. After printing more than a dozen sheets and no problems, Mao Geng asked Wen Yuan to invite Kang Lao, who looked at this magical printing and showed the same excitement as young people.

Then Mao Geng asked Kang Lao to observe the production of wax paper, and the printed leather paper with squares was immersed in the wax tank, pulled out and cooled, and then the wax paper with squares was obtained.

The next day, Kang Lao was invited to observe the printing of the first page of the textbook "Arithmetic". In other words, the "Arithmetic" textbook compiled by Mao Geng, in addition to Mao Geng's sorting out the basic knowledge of mathematics in his mind, also referred to two arithmetic books borrowed from Kang Lao, one is the official seal of Jia Xian's annotation of "Nine Chapters of Arithmetic", and the other is Jia Xian's "Yellow Emperor's Nine Chapters of Algorithm Grass". Mao Geng extracted some of the algorithms and questions in the book "Nine Chapters of Arithmetic", but its format was all converted with Arabic numerals, parentheses, and letters, and the text was punctuated according to the punctuation system of later generations. Regarding the format and horizontal arrangement, Kang Lao has also seen Mao Geng's board book on the blackboard in the classroom, and he is no longer surprised. But when I got the printed manuscript in black and white, I was still excited, and my hands trembled uncontrollably. Yesterday I saw the printing square, after all, the visual impact is limited, and today I am holding the "Arithmetic" page with the ink in my hand, and every word and symbol on it undoubtedly makes Kang Lao feel particularly shocked.

Immediately, Kang Lao expressed his opinion:

"Brother Mao, this seal technique is really amazing! But after figuring out the reason, it's not mysterious. It's just that there seems to be something wrong with this font. ”

Mao Geng heard this, and said no, if it is a simplified character, of course it is not appropriate, I carved it is a traditional Chinese character engraved against the traditional characters in the book, it's not easy! Moreover, when choosing what font to engrave with before, he also weighed it, in addition to carving the imitation Song style in his previous life, he carved the steel plate in addition to the imitation Song style is to engrave the Song style, in view of his own calligraphy that the Tao is really limited, after seeing the authentic Song version of the book gorgeous European style Xiukai, no matter how stupid he is, he does not dare to take his imitation Song style to the Great Song Dynasty to embarrass people, this time, there is only the only choice - Song style, supplemented by art words. Mao Geng thought, even if the Song body is almost there, with the help of the cloth steel plate, each word is carved squarely, at least the skeleton will not be scattered, and the art word is only afraid of being a big Ming in the Song Dynasty, and there is no comparison, so it will naturally not be praised and depreciated.

So with a full stomach full of questions, he asked puzzledly:

"Xiao Ke is dull, I really don't know what's wrong."

Who knew that Kang Lao shook his head and said:

"Brother Mao, don't you know, the font you carved is created by Qin Hui, this font is called Qin Ti, Qin Hui was once popular when he was in power, but after Qin Hui's death, his reputation became infamous day by day, and this font was no longer used in the market. However, it is not surprising that you returned to the Song Dynasty from Shandong and did not know about it. ”

Mao Geng was surprised when he heard this, what the hell is going on! Thinking about it again, this Qin Hui is a talent, otherwise he would not be able to be the prime minister of the dynasty, but it is a pity that Qin Hui created this font, and in order to avoid this damn surrender faction, even the Qin body he created was deprived of the surname Qin. sighed and sighed, Mao Geng still asked:

"Kang Lao, is this really Qin Ti?"

Kang Lao looked at it and said affirmatively:

"This calligraphy grid should be derived from the Qin style. Didn't your master tell you about it? It's ridiculous that Kang Lao actually thought that this was a moment of negligence when Master Mao Geng was teaching calligraphy and didn't inform his disciples, and this master was confused enough.

However, Mao Geng didn't care very much, some of the tactics of the three-three system in later generations were created by Mr. Lin, and they should not be used! Kang Lao just reminded him that this is an arithmetic textbook after all, and there is no official document prohibiting the use of Qin style, so he just talks about it.

Kang Lao was shocked on the West Chamber, and when he turned around, Mao Geng and Wen Yuan came to Kang's house in the East Chamber, and said something unbelievable, which made Kang Lao even more shocked.

After Wen Yuan said the matter and Mao Geng confirmed that this was exactly what he meant, Kang Lao was shocked, and his first reaction was to refuse. This was expected by Mao Geng, Mao Geng was full of things, and said "Please think twice" and left.

This thing is Mao Geng's packaging plan, in Mao Geng's packaging plan, chalk and wax paper engraving are Kang Lao's Ming, with Kang Lao's heart, how can he take Mao Geng's merit as his own, so he refuses to be kind, this is of course.

However, Wen Yuan's subsequent words made Kang Lao finally change his attitude.

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