The Tang and Song dynasties all had a ten-month holiday system, and officials had a lot of holidays.

But in the Ming Dynasty, the ten-month holiday system was abolished, and the total number of holidays each year was only more than 50 days. Moreover, these more than 50 days of holidays, New Year's Day, Lantern Festival, Zhongyuan, and Winter Solstice account for the majority, and there are basically no rest days at all.

Except for the Hanlin Academy's revision, editing, and Shu Jishi!

The new science and technology jinshi who has just been admitted to the Hanlin Academy will have a rest on five days, and he can also apply for eunuchs and guards to accompany him when he goes out. However, when the three-year period expires, the next Jinshi will be released, and the special treatment of the previous one will be canceled.

Today is another day of rest, Yang Shen said goodbye to his parents and wife after breakfast, and planned to take a car to the Wang family's mansion in the west of the city.

"Use repair!" Yang Tinghe shouted to his son.

Yang Shen, who had already walked out of the dining room, turned around and said, "Father, what are your orders?" ”

Yang Tinghe asked, "Have you been traveling with Wang Erlang recently?" ”

"Exactly," Yang Shen replied, "In addition to Bachelor Wang, there is also the experience of Jinyi Weigu." ”

Yang Ting and the head of the jaw approvingly: "Wang Gu and the two are both His Majesty's cronies, if they can be brought over, it will also be a considerable help in the future." ”

Yang Shen explained: "Father, my friendship with Bachelor Wang and Gu Shi is just a simple academic exchange, and it has nothing to do with court politics. ”

"People in the same way start as friends." Yang Tinghe said with a smile.

Yang Shen didn't bother to explain, so he said a few words casually, and then went out in a carriage.

Yang Tinghe also went out with his servants and took a sedan chair to the imperial city to work. He is still very satisfied with his son, not only is he excellent, but he also makes great friends. A large number of talented people have emerged in Zhengde's three-year jinshi, and most of the leaders are Yang Shen's friends.

Now the biggest headache for Yang Tinghe is the ministry, no matter how much he stretches his hand, he can only get some irrelevant positions.

Yang Yiqing firmly controlled the power of the officials, and Li Dongyang also mixed in a lot of sand, but he Yang Tinghe was helpless against the officials.

Yang Tinghe can only endure now, and endure until Li Dongyang Zhishi. When the time comes, he will be able to take over Li Dongyang's lineage, and those who do not follow will be thrown directly to Nanjing, and it will not be too late to turn around and wrestle with Yang Yiqing.

Yang Shen didn't have so many ideas, and the young genius was always conceited and disdained for those pickled things.

Without passing the word, Yang Shen came directly to the laboratory, chatted with Du Jin, Bao Chaozhen and others for a while, and began today's learning career.

In the middle of the morning, Wang Yuan suddenly appeared and asked people to bring a few spinning wheels.

Yang Shen was puzzled and asked, "What kind of experiment is Ruoxu going to do?" ”

Wang Yuan explained with a smile: "When we study mathematics and physics, in addition to exploring the mysteries of nature, we also aim to benefit all people. Why not use the knowledge of physics to transform the existing spinning wheel technology, so that people can save time and create more wealth? ”

As soon as these words came out, Yang Shen, Du Jin and Bao Chaozhen were a little incomprehensible. In other words, they are also willing to benefit all people, but they just do it casually, delay research time to make inventions, in their opinion, it is a waste of the basics.

If Wang Wensu did not serve in the household department, he would definitely hit it off at this time. The original intention of this gentleman to delve into mathematics was to make mathematics widely available and beneficial to all people, and to this end, he racked his brains to compile various mathematical methods into songs so that illiterate people could catch them.

Although they did not support Wang Yuan's approach, Yang Shen, Du Jin and Bao Chaozhen were not easy to oppose, after all, this was Wang Yuan's laboratory, and they were still learning from Wang Yuan.

Everyone put down their research projects and gathered around Wang Yuan.

Wang Yuan pointed to the two spinning wheels and said: "This one is a single spinning wheel, which can only spin one strand of silk cotton at the same time, and it is mainly used by women at home. This is a three-spindle spinning wheel, which can spin three threads of silk cotton at the same time, which is mainly used by the official weaving bureau and private textile workshops. So, can we use physics knowledge to make more than four spindles? ”

In these years, China's textile technology is still very advanced, and it can spin three spindles of silk cotton at the same time, while Europe can only spin two spindles at most.

Yang Shen, Du Jin and Bao Chaozhen were immediately blinded, they didn't even know how the spinning wheel worked, how could they have any ideas to improve it?

"Come in!" Wang Yuan clapped his hands and said.

Two maids of the royal family walked in, sat down in front of the two spinning wheels, and began to show the men how to use the spinning wheels.

After everyone understood, Wang Yuan smiled and said, "Please draw a mechanical work diagram of the spinning wheel." ”

"This is fresh!"

Yang Shen, Du Jin and Bao Chaozhen suddenly became interested, and expressed the daily visible machines with mechanical diagrams, which is engaged in academic research!

The three of them squatted in front of the spinning wheel, repeatedly observed the work process, and worked together to draw a schematic diagram of mechanics.

But then there is a lot of trouble, everyone is worried about how to increase the device and improve the work efficiency of the spinning wheel, which is not something that can be achieved in a day or two.

Laboratory assistant Zhong An's math level has been promoted from the third grade of primary school to the fourth grade. He had audited mechanics courses before, but he didn't understand anything about them, and he didn't understand the work diagrams drawn by everyone.

The kid listened to the heated discussion of the crowd, squatted down to step on the spinning wheel, and then looked at the mechanical diagram, and suddenly said weakly: "That...... Can you put something under the tread? It makes it more convenient to use force when stepping on the pedal, and you are not afraid of stepping too hard and not being able to control it. ”

Yang Shen, Du Jin and Bao Chaozhen didn't take it seriously, because Zhong An's idea of changing the soup without changing the medicine could not greatly improve the efficiency of the spinning wheel.

Wang Yuan also didn't know anything about textile machines, but in order to improve Zhong An's enthusiasm, he still asked craftsmen to come over and transform it. There are no major changes, just a small stake under the tread, and it will be done in a few minutes.

Then let the woman sit down and spin cotton, and the woman was suddenly surprised: "It's so light now, and you don't need to worry about the strength of your feet." ”

From the Yuan Dynasty to the middle of the Ming Dynasty, for nearly two hundred years, this pedal three-spindle spinning wheel has been used. Not only does it require the weaver's dexterity, but it also tests the strength and speed of the foot, and there is a world of difference between the work efficiency of skilled workers and new hands.

Just adding a small stake under the pedal can prevent the foot from being too strong when pedaling, making the lifting and suppressing wheel of the pedal more dexterous. Moreover, the leverage formed by the pedal and the spokes drives the collar on the leather string to rotate more freely, thereby greatly improving the work efficiency, and the spun silk and cotton sliver also have a higher yield rate.

"Yes, you kid is very flexible!" Wang Yuan praised with a smile.

Zhong An scratched his head and smirked: "I haven't touched a spinning wheel before, I just sat down and tried a few feet, either too much force or too light force." I thought, if there's something in the way down there, I'm not afraid to step on it too hard. ”

It's such a simple thing, but no one has improved it for nearly two hundred years.

When all the freshmen were in their first place, they focused on how to control their strength, but no one thought of adding a stake underneath. This small change was discovered after the Jiajing Dynasty, when the textile industry in the south flourished, and private businessmen discovered it in order to improve production efficiency.

Since it's related to academics, you can't just change it.

Wang Yuan personally did it this time, measuring the various arms of this spinning wheel, the weight of the spinning wheel, and so on. It took two full days to finally measure the optimal height of the stake and optimize the overall performance of the spinning wheel.

Unfortunately, since the spinning wheel is entirely handmade, there are differences in each spinning wheel, and there are certainly differences in how to install the small wooden stakes. The data measured by Wang Yuan is only suitable for this spinning wheel, and if it is popularized, it will all depend on the experience and craftsmanship of craftsmen.

Under Wang Yuan's test and improvement, only a small wooden stake was added, and the original spinning wheel that spun three strands at the same time could actually spin five strands of silk cotton at the same time. Moreover, the operation is more convenient, beginners are easier to get started, the work is not so physically and energetic, and the machine loss of the spinning wheel is also greatly reduced.

The work efficiency has been improved by about two to three times.

"Here's your bounty!" Wang Yuan personally handed five taels of silver to Zhong An.

"Sir, I'm ...... I didn't do anything. Zhong An was so frightened that he didn't dare to take it, so he just had an idea, and five taels of silver was too much.

Wang Yuan smiled: "This thing is very useful, it can be regarded as buying out your technology." ”

Yang Shen, Du Jin and Bao Chaozhen, although they were also surprised by Zhong An's changes, did not think that it was anything remarkable, because there were no essential changes to the spinning wheel. The three of them are working closely together to create a spinning wheel that spins more than ten mills at the same time, and that is the real qualitative leap!

And Wang Yuan is considering building a workshop, and two or three times the work efficiency is enough for him to make a small profit.

The reason why it is a small profit, not a big profit, is only because this improvement is too simple. When the commodities he sells cause market fluctuations, they will inevitably attract peers to secretly probe, and they will spread 100% quickly.

What can really make a lot of money is the complex machine that Yang Shen, Du Jin and Bao Chaozhen are developing!