Just as the Heng family and his son were fully engaged in the manufacturing of the foot-stitched threshing machine, the Cui Weng's family was trying to produce sealed ink bottles by the Sanchuan River north of Lishi County.

Earlier, Luo Sanlang customized a batch of small porcelain bottles from them. Although only a few twenty were successfully equipped with the lid, those twenty were sold at high prices for 200 cents each.

Cui Weng and his sons all believed that as long as they could master the technology of making sealed ink bottles, their business in the pottery making workshop will definitely be prosperous in the future, just like the Heng family car manufacturing shop and Yin family wheel shop in Lishi County.

However, in this era when there is no mechanized production and everything has to be done by hand, it is not so easy to successfully create large batches of bottles with good sealing.

Originally they wanted to make porcelain bottles and porcelain lids, but it was not feasible. The failure rate was too high. None of the 100 items could be successfully matched. The manpower spent in the process of finding pairing was also very huge.

Then they thought of the wooden lid, but it is not easy to carve a smooth spiral pattern that can match the bottle with a knife.

Cui Weng and his son thought about this difficult problem for a long time, but they were still at a loss.

In the end, there was no way. The old man held some successful or failed porcelain bottles they had made recently. He went to Luo Yong to find him. He hoped that Luo Yong could give him some suggestions. After all, he originally thought of such bottles first. And in the eyes of Cui Weng and others, there is no one in Lishi County who is smarter than Luo Sanlang.

Luo Yong did not disappoint Cui Weng, and he proposed an idea to Cui Weng.

The lid of the porcelain bottle can be made lighter, not so deep, the edge of the cap is slightly buckled inward, and there is no need to be made very tightly between the bottle cap. Just put a layer of Eucommia glue in the inside of the bottle cap. When the bottle cap is tightened, the bottle mouth will be tightly clamped on the Eucommia glue cushion layer. This will not only achieve a sealing effect, but also save the amount of Eucommia glue.

After learning about this method, Cui Weng felt like he had a treasure. He thanked Luo Yong again and again, and then bought some Eucommia ulmoides from him, and then went home happily.

The method of sealing bottle caps that Luo Yong told him was actually the method of glass canned bottles in later generations. It was very simple and practical and very common, but not everyone has observed it carefully. Luo Yong also thought about it after he finished making the first batch of ink bottles, and then he remembered that there was such a method.

When they built the cement workshop, the earthen kilns used to boil cement were built under the guidance of Cui Weng. He even personally participated in the firing of the previous batches of cement. Because of his participation, Luo Yong and others avoided many detours. This time, Luo Yong came up with this method, and the other party happened to come to him to learn from the scriptures, so Luo Yong told him completely about the method he could think of.

After Cui Weng returned home, he made the ink bottle as Luo Yong said, and he soon succeeded.

The diameter of the ink bottle cover is similar to that of copper coins. Now they do not use Eucommia glue to make the entire bottle cap, but only lay a thin layer of Eucommia glue gasket inside the bottle cap. This not only saves glue, but also has a good sealing ability. Because there is barrier of Eucommia glue, even if the ink bottle is poured, the ink will not directly touch the wooden cover, so there is no need to worry about the ink penetration, and finally dye the entire bottle cap black.

From the original entire Eucommia gel bottle cap to now only a piece of rubber pad inside the bottle cap, the amount of Eucommia gel has been saved by more than ten times.

The ink bottles produced by Cui Ji Made Pottery House are sold for only 30 cents. There are many people placing orders for a while. A large part of them are bought by the men living in the Xu family. They want to buy some ink bottles and put them together with their own goose bamboo pens and send them to their family and friends far away.

The ones were sent out with these things, and the arithmetics they learned from Luo Yong.

Taiyuan City is closer to Shixian County and was affected earlier, but the one that responded the most was Chang'an City. It was not because of how big the new goose bamboo pen and ink bottles had brought to people. What really brought them to the impact was mainly the simplified geometric arithmetic methods.

In the eyes of many people, compared with this extremely simple arithmetic method that even a child who has just enlightened can pick up, those pens and inks are all inconspicuous details and are not worth paying attention to at all.

However, there are also some people with a sensitive sense of smell that have already smelled the scent of wind and storm from these big and small events.

"The world is probably going to change." An old man sighed in the spring-filled courtyard.

"Why did Ahon say this?" asked a young young man in a moon-white robe opposite him.

"Do you still remember how much time it took to just hold a pen and practice calligraphy when you were enlightened?" the old man asked him.

"He is fashionable and young, naughty and fun, but he has taken a lot of effort to call him a gentleman." The young man smiled.

"I haven't practiced for a few months, I can't write any words that I can read." Looking back at the scene when my grandson practiced calligraphy when he was a child, the old man also had a little smile on his face.

"That's it." The young man nodded.

"The bamboo pens that have been circulated in Chang'an City recently are very convenient. Women, children and children can write when they catch them." The old man said again.

"Then they have to learn to write first." The young man disagreed.

"I don't know it now, and I'll read it more, and I won't know it in the future." The old man shook his head and asked his grandson again: "Do you still remember how much did a piece of paper you used when you first started practicing calligraphy?"

"I haven't calculated it seriously. Every time the servants take their money to buy paper, it often doesn't take long." The young man replied.

"Do you know how many pieces of hemp paper on the street can be bought for a penny?" As he said that, the old man sighed again.

"..." The young man was silent, first with hemp paper and then with bamboo pens. If people nowadays want to study and practice calligraphy, the learning cost is really much lower than before.

Since the previous dynasty began to implement the imperial examination system, countless children of aristocratic families passed the imperial examination and entered the court. The imperial examination system has basically provided another channel for the children of aristocratic families to become officials.

At this time, the imperial examination system did not adopt the missed name system. The test scores have a lot to do with the candidate's usual evaluation image and his family background. Moreover, it is difficult for the poor to have the opportunity to study, so there is no way to compete.

However, there are some destitute families or emerging families who compete with several mainstream families for official positions through the imperial examinations, but they basically compete. As the saying goes, there are no geniuses in the lower class, and no poor families in the upper class. Under the absolute social and political background, it is extremely difficult for poor families to stand out.

Moreover, the so-called poor families at this time do not refer to ordinary people, but small families that are not seen by big families. They are sorry that they are not even considered poor families.

However, now, this absolute monopoly position will be broken soon, but many people still don’t know it.

In the past, people from what kind of background needed to get in touch with pen, ink, paper and inkstone. Now, because of Na Luo Sanlang, the threshold has been suddenly lowered to such a low level. In the future, there will definitely be more and more people in this society who are literate. The seemingly insurmountable gap will almost be filled in just a few seconds.

No one in Xipo Village knows about the conversation between the grandfather and grandson in Chang'an City. Everyone should still go to class and farm. They are very busy all day long, but few people will sit down and think about it.

After the beginning of spring, there were very busy everywhere, and the business in the cement workshop skyrocketed day by day. Luo Yong's disciples were so busy that they looked like gyros, and Luo Yong often had to run there.

The men who lived in the Xu family's guest house were leisurely, and Bai Yimao and others rode their horses outside for a walk every day.

On this day, Bai Yimao and his friends ran around outside for a long time and returned to the Xu family's guesthouse. When they saw that the second uncle Bai was having a good chat with Na Luo Si Niang, they immediately felt a little horrified.

"Why are you only coming back now? You have been playing around all day long, but you don't learn a little like Si Niang." Uncle Bai Er scolded as soon as he saw these.

"It's good to go out to relax when you're tired of studying." Luo Si Niang said with a smile. Luo Yong said this a lot, but it was the first time Si Niang said this.

"..." Bai Yimao looked grim on his face, and always felt that something bad was about to happen.

"I was envious when I watched them ride horses, and I wanted to ride them, too." Sure enough, Luo Siniang said immediately.

"What's the difficulty? I'll let them teach you." Uncle Bai Er said cheerfully.

If it were an ordinary woman, Uncle Bai would definitely not be able to say this. Who is Luo Siniang? She is very good at sports. With her image, she will not make people think about whether men and women will not be able to kiss each other for the time being.

"It's true." Luo Siniang had two eyes bright. It seems that the math problems I've been doing in vain these days. It's so useful to get on the line with Uncle Bai Er. This strategy is very easy.

"Of course." Uncle Bai Er gave his nephew a warning look. This time, this kid dared to mess with him again.

"..." Bai Yimao and others dared not resist, and Xiaopianer was still holding her at Uncle Bai's second place, for fear that he would say something to the parents of Chang'an City.
Chapter completed!