After dinner, Li Liang rode a bicycle and took Wang Chao back to the county seat, and Chenchen and Zhang Junjie planned to continue to live at their grandmother's house for a few days. Li Liang's fried spicy crayfish in the evening was well received by the Chen family, and Zhang Meng, who came back from work at night, said that Lu Cheng, who was in a suit and leather shoes, came to the store to order two pots of crayfish in the evening, and he also complained that the fried crayfish at night was not as delicious as at noon. The crayfish at night was fried by Chen Chunhua, and she may not have mastered the heat for the first time, and the shrimp meat was a little old.

It may be because the two concubines of the Chen family have just let out the wind, and they haven't come to Chen Chunhua to inquire about the villagers in the store today. However, Chen Chunhua and Li Liang are not worried, as long as the business of the restaurant continues to be so prosperous, those people with keen business cells will always follow suit.

Li Liang didn't plan to go to the store in the next few days, he was going to spend a few days printing 60 sets of mnemonics and test papers compiled some time ago. On the way, he and Wang Chao made an appointment to go to the school mimeograph room together at 9 o'clock tomorrow morning.

Early the next morning, Li Liang brought two sets of aprons for stir-frying from home, had breakfast with Wang Chao outside, and came to the school gate, the school gate was closed, and Uncle Peng, who was the doorkeeper in the communication room, was listening to the radio.

The two of them walked into the communication room, and Uncle Peng asked, "Are you students making up classes?" It's been a while since class, why did you come so late!" It turned out that the school was organizing summer make-up classes for sophomore students, and these students were going to be in their third year of high school in the second half of the year, and the school attached great importance to it.

"Uncle Peng, the two of us are studying in Teacher Wang Na's class, and today we are here to borrow some materials from the mimeograph room!" Li Liang said.

"Oh, you're in Teacher Wang Na's class. Teacher Wang Na explained to me before the holiday, the key is here, you wait a minute!" As he spoke, Uncle Peng got up and took out a key from the drawer of the desk in the communication room and handed it to Li Liang.

The mimeograph room of Hekang Middle School was at the innermost end of the teacher's office building, and when Li Liang opened the door, a thick fragrance of ink spread. In the mimeograph room, there are several mimeograph machines, which are packed in a wooden box, and the size of the box is about 60×40×20 cm. The box is divided into left and right sides, and it is impossible to tell which is the bottom of the box and which is the lid. On the left is a printing screen and a paper plywood, and on the right is an ink board and a hand roller. Printing with this manual mimeograph machine requires the use of printing inks.

In his previous life, after Li Liang graduated from the normal college, he worked as a primary school teacher for several years, at that time, there was a shortage of materials, and many test papers were printed by the school itself.

"Liangzi, there are a lot of things, do you know how to use them?" Wang Chao looked at a room where he didn't know about objects, and asked Li Liang a little confused.

"Wang Chao, you go and open the window, rest for a while, I will engrave the plate with wax paper first, and then print it later." Li Liang said.

Wax paper engraving is a very delicate technique, it is simply the art of calligraphy: the basic configuration is a piece of iron plate with very fine frosted lines, a few sharp iron pens, an ink brush (which looks very similar to the scraper used to clean glass windows today), several large iron clips, and the consumables are wax paper as thin as a cicada's wings, and various colors of ink.

Li Liang first laid the wax paper on the iron plate and used an iron pen to describe the words or patterns to be written. This is a very hard work: the iron pen and the iron plate work together to cut the lines and lines of the wax paper, if you just allow the ink to squeeze through, the strength of the iron pen is very exquisite; too light not only can not scratch the wax film and print the words, but also may not be able to resist the frosted pattern of the iron plate, and the straight line will become a corrugated line! If it is too heavy, it will scratch the wax paper, and the amount of ink transmitted is too large, and the text will become an ink ball! The words with simple strokes are better, and the words or patterns with complex strokes are very skillful! (Imagine the difficulty of carving a small four-number "hidden" character).

Li Liang is ready to carve out the memory method first, he summarized this set of memory method about 3,000 words, engraving is a skill job, a piece of paper can only engrave a few hundred words, carved the first piece of paper, it took about half an hour, Li Liang a little underestimated the difficulty of the engraving work.

Wang Chao stood next to Li Liang and observed how he engraved, Li Liang turned back to him and said: "Wang Chao, maybe it will take a long time to engrave, or you go back today, and when I finish engraving today, you can come over tomorrow to help with printing!"

"Liangzi, you can teach me, I don't think it's very complicated!" Wang Chao said eagerly.

"Okay then, I'll teach you!" Li Liang explained to Wang Chao in detail the matters that need to be paid attention to in engraving.

In the whole process of engraving, the most important thing is that the pen power of the whole page is light and important, otherwise the printed words will be of different shades. If you make a mistake, you can correct a small mistake: you carefully bake the wax paper with a lit cigarette to re-fuse the wrong stroke. Then it's time to modify it. The engraved wax paper is spread on white paper, evenly coated with ink, and the pages are scraped with a spatula. The ink is printed on the white paper through the carved handwriting.

Wang Chao took out another set of wax paper, and on the workbench next to him, he began to try to engrave it by himself, following Li Liang's appearance. His comprehension is very high, Li Liang stood by and watched for a while, and found that Wang Chao's handwriting was very good, and the weight was also very appropriate, he breathed a sigh of relief, returned to his workbench, and continued to carve the next one.

The two spent a whole morning carving more than a dozen pages of memory method, and Wang Chao carved a piece of wax paper in the middle.

Li Liang and Wang Chao had lunch in the school cafeteria with the second-year high school students who were tutoring. After eating, I didn't have time to rest, so I returned to the mimeograph room and continued my afternoon work.

Once the stencil is complete, you can start printing. The operation of this old-fashioned mimeograph machine is entirely manual. The ink is packed in a cylindrical box, encapsulated in a plastic bag, and opened before use. The ink is thick and black, and it smells of gasoline. When printing, the ink is stirred out of the bag and placed on the ink board, and then the ink is pushed up and down, left and right, so that the ink is evenly paid on the ink board and the glue roller.

The wax paper should be clamped on the printing screen, and the printed paper should be clamped on the paper splint under the printing screen. The left hand pinched the mimeograph screen, pressed it hard and pressed it, the right hand held the ink-stained rubber roller, placed it on the printing screen, evenly extended the printing screen and pushed the rubber roller from back to front, and the printing was completed in one page. Then lift the printing net and turn the printed page over. He continued to repeat this mechanical action, turning the printing screen and paper up and down, pushing the ink glue again and again, and using his mouth as a counter to count how many sheets of wax paper had been printed.

This is the printing operation process of the old-fashioned hand printing press. Once a piece of wax paper is printed, remove it and replace it with a new one, and repeat the above printing process until all the documents are printed.