Ye Yuran didn't realize that she had let slip something.

She was so relaxed in front of Gan Yixian that her mouth spoke faster than her brain when she thought of something.

The sketch master Lin Xinrong did not come as usual, but Ye Yuran received the three major chapters of "Simple Agricultural Drawings" drawn by him: sweet potatoes, potatoes, and corn.

In addition, Ye Yuran also received an unexpected surprise from Zhu Wu - Qiao Workshop made a pencil.

Ye Yuran was pleasantly surprised: "It's really done?! Isn't it too fast?!"

Opening the box, there are not only pencils, but also colored pencils.

They have also made the ink-absorbing pen that Ye Yuran mentioned. The ink pen uses Eucommia gum.

Ye Yuran quickly took out the writing paper from the package, took pencils, colored pencils, and pens to try out.

Gan Yixian saw it nearby and looked surprised: "What is this? Is it also a pen? It doesn't look like a brush."

"This is a pencil. This is a colored pencil, or colored pencil for short. This is a pen. You see, the pen tip is made of metal..."

"It's made of metal, why is it called a pen?"

"Because steel is the hardest thing that Qiao Workshop can make at present." Ye Yuran randomly found an excuse to excuse it.

When Gan Yixian heard this, he didn't ask further questions. No matter how hard this thing is, can it be stronger than the black iron stone in the immortal world?

He thought this pen was indeed quite interesting, and wondered in his mind whether he could use black iron stone to refine a pen for his master.

Xuan Tieshi: "..."

I am the material for refining the magic weapon, thank you!

Not only that, Ye Yuran even found matches in the things they packed.

You know, nowadays people still use fire sticks. Although it is convenient to light a fire, it is more troublesome than matches.

Ye Yuran was extremely pleasantly surprised. She felt that if this situation continued, Qiao Gongfang would give her more surprises.

Opening Zhu Wu's letter to himself, Ye Yuran found inside that Zhu Wu mentioned something made of glass - a magnifying glass.

When the workers were making glass, they accidentally discovered that the uneven thickness of the glass can magnify things in the distance. Now the alcohol purification technology can be used to extract other things. Experiments are being carried out to see what can be extracted. Some people are interested in floor plowing and water transfer.

The cylinder was improved, but it was too big and was inconvenient to transport, so he sent some design drawings. If Ye Yuran needs it, he can find someone to make it and take a look...

Ye Yuran was so happy that he wrote back on the spot and praised Zhu Wu fiercely. He was also worried that Zhu Wu should not forget to apply for a "patent" with the court for these things.

Especially the glass that can magnify things, you can try to see if you can see further away. If you can, then in the future, people standing on the city wall will be able to see whether there are enemies in the distance, which is an important weapon to benefit the country.

.

Once this is done, it must be secretly presented to the court.

Since glass can enlarge words, it can be made into "glasses" for people with poor vision. Ye Yuran drew a schematic diagram of glasses next to him and told him what the glasses are used for.

She remembered that glass could reflect people's faces to a certain extent. Could she consider adding a layer of coating behind the glass so that the glass could clearly show people's faces?

Just like a water mirror.

If alcohol extraction technology has been developed, you can try essential oils, essential oils and other extractable liquids, mixed or separated...

Even potions can be extracted. Especially for children who don’t like to drink medicine, it would be troublesome to eat a large bowl. If it is extracted into a small dose, would it be more convenient to take it?

For doctors, it will be more convenient to carry.

Matches are a good thing. Try to find a way to lower the price and make it cheaper for people all over the world. By the way, do some research and see if there is any substitute for firewood in the world.

Just like charcoal, since charcoal can provide warmth in winter, there must be other things that can do the same. Even once it is made, it can be used daily, just like a charcoal stove.

However, charcoal stoves are too expensive and ordinary people cannot afford them.

Floor plows and water drum carts are good things. You can also consider harvesters, threshing machines, mills... Anything that involves the vital interests of the people can be carefully considered.

The thing is not about how advanced it is, the point is that it can save time, improve efficiency, and bring convenience to people's lives.

Ye Yuran wrote a lot, almost wherever he thought of it.

She felt that none of the group of masters who could pay a lot of money to pay for the craftsmanship workshop was not capable, but why couldn't they always design new things?

It's not that their skills are not up to standard, but that they don't have enough imagination. They always stick to their own laurels and stick to what their ancestors left behind. But how can this happen?

If people want to make progress, they must first dare to think and innovate. Even if they design a lot of useless things, don't be afraid. Put them on the market first and withstand the test of the market.

Designs that can be sold and allow them to make money are good things. Designs that do not make money but are helpful to people's lives are also good things.

Even if it is just for fun, it will entertain the people and enrich everyone's spiritual world.

Ye Yuran encouraged Zhu Wu to put his craftsmanship to use, and encouraged the masters below to use their imaginations. No matter what it was, they should design it first.

The letter was just sent out, and probably before it reached Zhu Wu's hands, Ye Yuran received something from Zhu Wu again, this time it was all kinds of paper.

Previously I only sent one type of paper for writing letters, but this time I also sent papers of different sizes and softness.

Zhu Wu wrote in the letter: [Mom, there are too many papers. Some are suitable for writing, but some are not suitable for writing. I don’t know what to use them for. Could you please help me with some ideas?

?]

Why is paper that is not suitable for writing useless?

Is there any problem with using soft paper like this to wipe hands as paper towels and wipe buttocks as toilet paper?

Also, have menstrual papers been produced?

Although Ye Yuran is old and can no longer use it, there are so many girls in the Zhu family and they have to use it every month. Why don't they think about it?

Ye Yuran immediately replied: [You can try using this particularly soft paper...]

[Paper has many uses, such as making kites, but it is waterproof and can be used as umbrellas. Thinking about it, can it replace glass greenhouses and be popularized to the people, so that people can grow vegetables in winter? 】

[Open your mind and stop staring at writing. Your eighth sister is still using plant ash for menstruation. If you let someone design a menstrual paper, then this person will be the gospel to girls all over the world and will be written in

History, grateful to women from generation to generation.】

[Look, invention and creation are actually that simple. No matter how small it is, as long as it is useful, it is a good thing and will be remembered by history.]

…

By the way, I asked Zhu Wu for more paper towels and toilet paper, and requested that the paper towels be designed with more designs, various scents, various patterns, high, high, and low grades.

One is sold to the expensive ones, and the other is sold to the common people all over the world.
Chapter completed!