Rubber shoes have the characteristics of light and comfortable, and they are very soft and elastic, which can be suitable for all kinds of sports, which is better than all the current shoes of Datang, which is beyond doubt. Pen × fun × Pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ

Although later generations evaluated natural rubber shoes as wear-resistant, it was because the technology of later generations was very developed, and there were too many wear-resistant products than natural rubber shoes, so it seemed that natural rubber shoes were very wear-resistant.

Datang will definitely popularize rubber shoes in the future, but for now, the possibility of popularization is completely none, of course, because the output of rubber is too low, it cannot meet the large-scale production at all, and because mass production cannot be realized, the cost of each pair of rubber shoes is very high, and ordinary people really can't afford it.

Wearing the natural rubber shoes designed and manufactured by himself, Li Ang felt that the whole person had become energetic, and he walked a lot more freely than usual.

And because it was winter at this time, Li An put a very thick cotton pad in his rubber shoes, and also wore thick cotton socks on his feet, so he couldn't feel the cold at all, but because the soles were too thin, it was not easy to walk when he encountered muddy water, but in the entire surrounding of the capital, almost all the roads were paved with concrete pavement, and it was almost impossible to find dirt roads, so there would be no such worries.

In addition, in addition to rubber sneakers, Ang Lee also has a pair of rain boots, wearing rain boots to go out, no matter how muddy it is, he can calmly deal with it.

Winter is the season of snow, and once the weather is a little warmer, the snow will melt, calmly making the soil muddy, for a person of high status like Ang Lee, there is naturally no need to walk on dirt roads, and for people who live in places where the concrete road does not radiate, travel becomes very painful.

In addition, the southern water network zone is mainly planted with rice, and when planting rice, most of the people are barefoot, so it is more convenient to plant rice, but it is easy to be targeted by leeches, which causes great damage to people's bodies, and once you put on your boots, you can resist the invasion of leeches very well.

In the past, when the weather was bad and the road was muddy, Li An would never inspect it, after all, after all, when I went to a trip, the whole shoe was soaked, and the feet were wet and very uncomfortable, and now, with advanced rain boots, of course, there will be no worries about this.

"Li Shilang, this field, in the spring of this year, will be planted with sweet potatoes, and the next piece will be planted with corn, all of which are new species shipped from the Americas, and the yield is much higher than that of our Datang millet, and the people are willing to plant crops from the Americas, which can also fill their stomachs better."

When Ang Lee went to inspect the fields, an agricultural official opened his mouth to explain.

Although the promotion of American crops has been completely handed over to the relevant officials, after all, only Li An has the highest technology and best understands the characteristics of these American crops, so Li An will guide these officials from time to time, teach these officials how to better promote these crops, and inspect the results of the promotion of the officials, praise the good performance, and encourage the bad performance.

In order to carefully inspect the preparation of the relevant crops, Li An personally walked down the field and stepped on the muddy land to observe the preparation of the land, which made the agricultural officials of the imperial court cry.

Li An walked into the muddy land in rubber boots, while the rest of the relevant personnel walked into the muddy land in ordinary cotton shoes, the rubber boots were covered in mud, which did not hinder anything, and the feet would not be soaked, but ordinary shoes were different, after being contaminated with mud and water, it was easy to penetrate into the inside of the shoes, which made people's feet wet and very uncomfortable.

And the reason why Ang Lee personally walked into the muddy place is not to deliberately get along with everyone, but to verify the use effect of rain boots, and the new product must be verified, and then it can be confirmed how the performance is.

After inspecting the mud for half an hour, Li An was generally quite satisfied with the performance of the rain boots, at least, his steps were always dry, and the muddy water did not enter the inside of the rain boots at all, which was enough for the rain boots.

After walking out of the muddy area, Ang Lee sat on a small stool, took off his muddy rain boots, and replaced them with rubber sneakers.

"I'm really sorry to let you walk in the muddy land with this official, but what about the people watching? Only when we personally go into the muddy land, can we be closer to the people, so that the people trust us more officials, in addition, the official newly invented rain boots, which is this thing, the effect is not bad, at least, the official's feet are not wet at all, and after mass production in the future, all of you can wear such rain boots, so that you don't have to worry about walking in the muddy place. ”

Li An pointed to the dirty rain boots and spoke.

"These are rain boots? It looks impermeable, and it's relatively soft, so I don't know what material it's made of? ”

An agriculture official asked.

"It's rubber, it's made from rubber sap mined from rubber trees shipped from the Americas, and let's see if it's amazing."

Ang Lee said with a smile.

"Oh, it turns out that this is a shoe made of rubber material, it turns out that the rubber tree has such a big effect, it can be used to make shoes, it's amazing!"

"It's so interesting that the sap flowing from the rubber tree can be used to make shoes, and Datang has a rubber tree, so in the future, you can use these impermeable shoes."

Li An said happily: "There is nothing magical about this, the silkworm is just a small insect, but the filaments spit out of the mouth can be made into clothes, isn't this also amazing." ”

"Yes, yes, Li Shilang is right, since the silk thread spit out by the insects can be used to make clothes, the sap flowing from trees, of course, can also be used to make shoes."

"There are magical silkworms in Datang, and there are magical rubber trees in the Americas, and now the rubber trees in the Americas have taken root in Datang, and in the future, my Datang will become richer, and you must work hard to build a more powerful Datang Empire."

Li Ang excitedly encouraged.

"We will strictly follow Li Shilang's teachings, and we will do our best to serve the imperial court."

All the officials were also excited, and it was a very happy and proud thing to be an official in a very powerful country.

After verifying the performance of the rain boots, Li Ang returned to the R&D center to sort out the technology of manufacturing rain boots, and left them for large-scale production after the rubber resources are more in the future.

In addition, Li Ang began to develop more important equipment, this guy is more important to the Tang Empire, and it is also a very important item for future generations, without this kind of item, it will be difficult for the entire society to develop.

This is the famous pneumatic tire, and only a steam car equipped with pneumatic tires is the best steam car.

In addition, tires also have size and thickness, the large one is the tire of the steam car, and the small one can be the tire of the bicycle, as long as the pneumatic tire is mass-produced, the bicycle has practical value, and the steam car will become more comfortable, less fuel consumption, and faster.

Since Jiaozhou and Yazhou can only transport more than 100 catties of rubber juice per day on average, rubber resources are extremely scarce strategic materials, and Li An also cherishes them when he uses them, for fear of causing even a little waste.

The technology of pneumatic tires and tires is not complicated, as long as you try to test, you will always find a way, however, in the inflatable position of pneumatic tires, it is a technical difficulty, and it is not easy to grasp the part, after all, this part is the most likely to cause air leakage position, which must be dealt with, otherwise, it will cause great hidden dangers in the future.

Li An and the technical personnel, after many research, finally manufactured the most primitive inflatable inner tube, as for the outer tire, the technical difficulty is even smaller, and it was quickly developed, and the inflatable cylinder for the inner tube is a very simple tool, with the current industrial strength of Datang, it is easy to manufacture the inflatable tube.

The inner and outer tubes, as well as the air pump, have all been manufactured, and then it is time for experiments, and in order to reduce the difficulty of research and development, the inner and outer tubes first developed by Ang Lee are small tires on bicycles, which are relatively easy to manufacture, and the danger of experiments is almost none.

As for bicycles, because pneumatic tires have not been invented, they have not been popularized, and even if Ang Lee later built more modern bicycles, they were still too bumpy to achieve large-scale popularization, and only a few servants of aristocratic families used them.

Now that the inflatable tire has been invented, Ang Lee believes that as long as the inflatable tire is pushed into the market, the bicycle will soon be popularized throughout the Tang Dynasty, especially the slaves of the aristocratic family, and will soon be equipped with this means of transportation.

"Li Shilang, this inflatable guy puts it on the bike, and the bike will become a lot more comfortable?"

I haven't experienced it myself, and everyone naturally doesn't believe what Ang Lee said, after all, just adding a layer of inflatable rubber skin to the rim can make a big difference, and for cycling, everyone knows how to do it, this is not much difficult.

"How effective it is, you will know if you try it yourself."

Ang Lee didn't bother to explain, and offered to let them try it out for themselves to prove how great their invention was.

"I'll come first."

A young technician volunteered to push a bicycle with rubber pneumatic tires and walked a few steps, stepped on it, and rode it.

"Hey, it's really different, it's much better than when you didn't have tires, you can hardly feel the bumps, and the effect is really not ordinary!"

After riding it himself, the young craftsman commented excitedly.

"Let me try it too."

Suddenly, there were more skilled craftsmen who offered to try out the difference between a bicycle with tires and a normal bicycle.

After the trial, almost all the craftsmen gave a positive evaluation of the bicycle, believing that the bicycle with tires invented by Ang Lee was a very practical means of transportation.

Ang Lee was not surprised to be affirmed by everyone, which was a natural thing, but he still felt very happy in his heart, because his scientific research achievements were affirmed.

But at the same time, Li Ang also understands one thing, that is, the price of rubber pneumatic tires is too high for the time being, and it cannot be popularized in the short term.

But for the imperial court and the big nobles, even if the cost is high, it is also affordable, so rubber tire products, for the time being, can realize the popularization of the court and the big nobles, and ordinary people can only wait for many years to enjoy this kind of transportation.

With the continuous supply of rubber resources from Jiaozhou and Yazhou, Ang Lee has successively manufactured 100 sets of bicycle inner and outer tubes, which can be equipped with 100 bicycles, which can be described as a limited edition.

Fifty sets of pneumatic tires for the carriage were also manufactured, which could equip fifty carriages, making the carriage travel more smoothly and quickly, most of which were sent to the palace and handed over to the emperor for distribution, and the remaining few were kept by Li An for his own use.

In addition to these relatively small tires, Ang Lee also made heavy-duty tires, that is, tires specially used for ironclad gun trucks, as well as various heavy machinery.

This kind of tire has higher quality requirements, the inner tube should be strong and durable, and the outer tire should be wider, thicker and wear-resistant, only in this way can it meet the needs of large vehicles.

In particular, the ironclad artillery car has a certain weight, its weight is at least between 10,000 catties and 20,000 catties, and it is five to ten tons in the future, which can be regarded as a veritable heavy vehicle, and the requirements for tires are of course higher.

Due to the extreme shortage of materials, the large tires made by Li An can only be equipped with twenty heavy vehicles, of which ten are equipped with ironclad artillery trucks, and the rest are installed on ironclad command vehicles and various transport vehicles, and the effect is very good.

After Li An developed the tire and tried it for a period of time, the whole court saw the huge role of pneumatic tires and put forward the requirement of large-scale popularization as soon as possible.

Faced with such a problem, the Tang Emperor Li Longji came up with a way to set up a factory in the Americas, and immediately announced that Li An entered the palace, and he wanted to hear Li An's opinion.

"Weichen Li An see Your Majesty."

Li An respectfully saluted Li Longji.

"Li Shilang, come here, I have something important to discuss with you."

Li Longji seemed very kind and treated Li Ang very warmly.

"Your Majesty has something, even if you tell me, Weichen will do his best to do it."

Li An said.

"It's about tires, I heard that most of the rubber trees planted in Jiaozhou and Yazhou will not be mined until five or six years later?"