However, seeing the straw being washed and soaked, Cheng Chubi thought of the abandoned small paper factory in his township.

It was in the 80s of the last century, due to inconvenient transportation, many places in the southwest of the country built their own paper mills with small workshops.

And the raw materials they use are these things, although the quality of the paper produced is very average, but at least it can be written.

Cheng still remembers an uncle who was a paper mill technician, and was said to be a lecturer who made a mistake at a certain university and was sent down.

After taking the pulse of the paper mill process in the township, a certain proportion of tree bark and cellulose-rich raw materials such as reeds were added to the grain straw.

The hardness and strength of the paper line produced are very large, and the reason why the impression is so clear is because when I was a child, the big guy hated the most was to use the homework book to stand on the buttocks.

Because the paper is so hard, and it is very tough, if you fold it a few times, the dolls with small arms and legs can't tear it at all.

The source of paper for the workbook is the sheet paper produced by the township paper mill.

Later, because the paper was made from straw and other raw village materials, the pollution was too serious, and eventually those small paper mills were either closed down or merged, and the hometown was returned to a green water and green mountains.

After Cheng Chubi graduated from university, he once went to the paper mill with a former classmate to reminisce about his youth, after all, there were many heroic deeds such as peeing in the bubble pool.

The housekeeper Uncle Fu and Cheng Hu both noticed the strangeness of their third son, and stood on the edge of the pool with a strange smell on their faces.

#####

Cheng Hu was about to speak, when he saw the housekeeper Uncle Fu waving his hand at him and whispered.

"Don't alarm the third son, when the third prince has a weird smile on his face, generally speaking, he has an idea, or inspiration."

Hearing the words of the housekeeper Uncle Fu, Cheng Hu smashed his mouth, looked at the smirk of the third son, and always felt that something was wrong.

Uncle Fu, the housekeeper, said quietly with a smile of relief and peace on his face.

"Our old Cheng family, the eldest son and the second son have pure temperament and are real, but the third son has the same temperament as the master, huh...... They're all good people. ”

Cheng Hu's head clicked quickly, and he was straight in his heart, what he said was ...... Who is the master, I don't know?

However, the two eldest sons and second sons do have a temperament, well, I don't know how to describe it.

If the master is thick and fine, then the eldest son and the second son, there is almost no fine in the thick, the eldest son is better, and the second son is a sincere person.

However, Uncle Fu can praise the third prince to such a point, plus the various deeds of the third prince in Chang'an for more than a year. Gee......

I'm afraid that there is really a trend that the blue is better than the blue, and it can be regarded as the successor of the old Cheng family.

The smile on Cheng Chubi's face finally gradually put away. "Cheng Hu, is there a pen, ink, paper, and inkstone here?"

"Yes, please also ask the third prince to come with the villain." Cheng Hu hurriedly put aside the messy thoughts and strode forward to lead the way.

However, because he didn't bring a quill pen, Cheng Chubi, who could only write simplified characters with a brush, simply asked the housekeeper Uncle Fu to go into battle.

And he was chattering crookedly beside him, as Cheng Chubi dictated according to his memory, the housekeeper Uncle Fu was struggling to transcribe the words of the third son.

Cheng Chubi took the process and method of paper production that Uncle Fu had copied, and looked at it carefully for a long time before nodding with satisfaction.

Ancient artificial paper is hammered, and in addition, soaking is made of plant ash, and the alkalinity is not enough.

Therefore, Cheng Chubi decided to adopt the method of later generations, using lime to soak, and let them make a large grinding disc and use a large grinding disc to grind pulp.

In a nutshell, it is crushing, soaking, cooking, refining, screening......

"By the way, I still have a ratio left, the straw accounts for 60%, and the reed accounts for 40%.

It should be this ratio, you can try one or two according to the process I gave you. ”

Cheng Hu, who has been in charge of the old Cheng family's paper workshop, looks at this kind of production process that is similar to his own family, but there are several differences.

I couldn't help but look at the third prince who told these things almost without thinking, and said with awe on his face.

"Third Prince, you got this recipe from Xuancheng?"

Cheng Chubi opened his mouth, although he was not very happy that this Cheng Hu looked down on him so much, but Cheng Chubi was too lazy to explain.

It was a very inscrutable smile. "Don't ask, do as I tell me, I hope to be able to see the paper before I leave Chang'an and return to Lishan."

"Don't worry, the third son, I won't be able to miss your big thing." Cheng Hu immediately raised his head and replied loudly.

Hearing Cheng Hu's very energetic answer, Cheng Chubi nodded with satisfaction, and finally left with confidence.

Lao Cheng's family is more realistic, but whenever they start to do things, they will never be sloppy, there are one and two are two.

Leaving the paper mill, Cheng Chubi raised his head and glanced at the sky, and he had to rush back to Chang'an City to see the tinsmith again.

Because the lead-tin alloy ingot that he developed before was delivered today.

"Alas...... I didn't expect that I would have such a conscientious and bloody day of running for others. ”

Cheng Chubi shook his head, he really wanted to catch the rib spirit prince and let him see how hard he was.

Let him understand the sacrifice that his good brother has made for him.

It's a shame that I've been staying in Chang'an these days, and I don't even have time to play cards.

Not...... The card friends he cultivated are either far away in the land of Qinghai, or they are staying in the Lishan Tangquan Palace soaking in the hot springs and eating dried fish.

is only himself, and he is tired and tired of either treating the eyes of Michelin Wei Wang, or running around for the prestige and reputation of the prince of pork ribs.

#####

In front of it are several lead ingots of the same diameter and height, with a cross-section of about one centimeter and a height of about three centimeters.

In addition, on one side, there is a recessed groove, which is convenient for getting stuck and not moving when in use.

After all, the font copied in the regular script of this era is also of this size.

Therefore, the lead tin ingots made by the gray-haired tinsmith met Cheng Chubi's requirements very well.

"According to your instructions from the third prince, a total of five proportions of lead and tin ingots have been made."

"The ratio of lead to tin ranged from three to seven, four to five, five to five, to six to four, seven to three.

Among them, this is the ...... with moderate hardness and the highest wear resistance."

Cheng Chubi picked up the lead tin ingot that the tinsmith said, and then rubbed it vigorously on the tribute paper for a long time, and after carefully studying it, he bowed his head slightly with satisfaction.

Then he picked up a carving knife and carved the top of the lead tin ingot, and the first knife went down, and Cheng Chubi had a very comfortable feeling.

Book Reading House