I do research in ancient times

As soon as these words came out, the expression on Zhang Sanniu's face suddenly became very embarrassing.

He... just wants to fight for a learning environment for his own child, but he doesn't want to take the exam himself!

He can fight wars, guard borders, set off cannons, all these things, and he is not afraid of bloodshed and injuries, but the exam...

Thinking of the days when he worked hard to learn coastal defense artillery, Zhang Sanniu couldn't help but fight.

At that time, the calculation of the angle and the falling point made him feel embarrassed. He lost his hair in handfuls, and his hair volume, which was not considered abundant, bottomed out instantly. The key points are integrated.

When he really started to fire the cannon, half of his old life was lost.

Did you hear what Mr. Ning said?Five-subject comprehensive intensive lecture spree!It's not a simple thing to hear!

If it is really contaminated, the few remaining hairs on the back of the head may have to be thrown out.

"No, no, or not..."

Zhang Sanniu laughed dryly, and involuntarily stepped back half a step, secretly groaning inwardly.

How he forgot!

Mr. Ning recently gathered a group of teachers in the city. It is said that these people stayed in the classroom for several days, and then compiled a few booklets, which were full of topics.

As soon as this thing came out, it was immediately enthusiastically sought after by all the residents of the border town.I heard from his fellow villagers who worked in the printing workshop that during this period of time, the printing room had ordered three volumes, which was almost equally divided with the single volume of "The Legend of Dongshan Heroes".

Zhang Sanniu followed suit and bought a few copies, and prepared a set for each of the three boys in the family.

His family's children have all entered the school now, and the second child with the best grades is also in the middle, and the other two have even dropped to the bottom of the list several times.

Zhang Sanniu beat him and scolded him, but nothing worked.

This time I sent them a collection of topics, seeing the three cubs shed tears of gratitude, Zhang Sanniu felt the pride of being a father in his heart.

Anyway, the price of this set of booklets is not high. He is a school captain with military merits, so he doesn't feel bad for this little money.He has worked for most of his life, going through life and death on the battlefield, isn't it just for future generations to have a future!

What is a set of exercise books? If it weren't for the fact that he couldn't get more, he would also like to buy some for the brothers in his hometown, so that the children in the clan can also borrow their strength.

But if it's me who has to do the questions...then...forget it...

Thinking of this, Zhang Sanniu had a blunt expression, and changed the subject with a dry smile.

"Mr. Ning, these boxes are full, but we are going back to the city?"

Ning Fei raised his head, looked at the sky, and shook his head slightly.

"It's still early, so there's no rush."

"The rubber grass here is very lush, so let's try to get some glue out first. If it works, we'll pick some more for backup. It's not easy for a big boat to go out, so we can't waste resources."

Ning Fei's prestige in the border town is extremely high, and almost no one does not listen to what he says.It's just that all the guards took ensuring his safety as the first task. When it came to picking grass juice, no one knew how to start.

Facing the bewildered eyes, Ning Sawzi smiled, briefly explained the steps of removing the glue, and demonstrated it himself with rubber grass.

The guards present here are all from hard-working backgrounds, and they have been doing farm work since they were young. Ning Fei did it well with just a few touches, and he got started quickly.

Oh, it turned out to be collecting these sticky things from the roots of weeds, simple.

Three times, five times and two times, the translucent liquid was squeezed out of a small basin.Ning Zaozi didn't expect that everyone's techniques were so proficient, and he was flustered for a while at first, but later he realized that he was a bit behind, so he simply entrusted all the work to others.

"enough."

Ning Fei nodded, and took the small pot of glue from Zhang Sanniu's hand.

It is a translucent gray liquid that is very viscous and sticks when stirred a little.

Ning Shaozi turned his head and fixed his gaze on Zhang Sanniu's feet.

Zhang Sanniu wore a pair of low-cut cloth shoes, which looked a bit like a layered bottom, which stood out among the guards in straw sandals.

"Brother Zhang, can you lend me your shoes?"

Hearing his question, Zhang Sanniu was slightly taken aback.

His shoes were made by his mother-in-law at home. The soles are layered with straw and cotton. They are soft and comfortable to wear, and they are envied wherever they go.Although the Heijiajun also issued shoes, they issued leather boots for winter, which is not necessary in this solar term.So most of the soldiers either weave straw sandals to wear, or go to the shoe store to buy thin and low ones, anyway, they are not as handsome as him.

Zhang Sanniu values ​​his shoes very much in his heart, and cherishes them very much on weekdays.Hearing Mr. Ning's need this time, he hesitated for a moment, but he simply took off his shoes and handed them over.

Ning Fei took the shoes and really smelled a sour and salty smell.Zhang Sanniu has sweaty feet, and the weather is so hot now, even if the cotton shoes are breathable and sweat-absorbent, the smell is inevitable.

The mouse, Ning Saw, is a man who has withstood the test of the strong smell of the blacksmith workshop. This smell is like sprinkled water, and there is no pressure to deal with it.

He put the cloth shoes aside, and took out the sulfur and some additives he had prepared from the wooden box he carried with him.

Although the root of green rubber dandelion contains rubber components, the quality of the natural rubber inside and which component it belongs to needs further verification and processing.Ning Fei had made full preparations before coming this time. He brought all the materials needed for the simple vulcanization reaction with him. There is no guarantee that he can produce the vulcanized rubber he needs, but rubber has a wide range of uses and each has its own purpose.The oil industry can't start yet, and synthetic rubber only exists in dreams, and his airtight pressure vessel rubber ring can only count on these natural rubbers.

Ning saw that he touched his nose.

Then... let's make a rubber shoe first.

So, all the guards watched as Ning saw that he mixed the fresh rubber grass juice with sulfur and put it in an airtight container to heat it over water.

In the middle, he also opened the lid several times to check the situation, and occasionally added some unknown things into it, muttering to Sanshui old man about what he was talking about.

The appearance of these two people talking about each other was as good as ever, and they looked like sails of magic sticks, which made all the guards stand in awe.

Who is the head of Sanshui Road?That is a well-known fairy figure in the frontier army. He knows astronomy from the top and geography from the bottom.

Mainly, what he said was mysterious and mysterious, and others could not understand it.It is said that he can also judge his luck by looking at his face, and generally people with bad thoughts dare not lean towards him at all.

But since they came to Jiuling City, everyone found that the Taoist priest swept away his previous fairy-like appearance, and became much more down-to-earth.For example, he is now squeezed together with Ning Juzi of Mo Zong, head to head, flustered and confused, like two little children playing with fire in the kitchen.

"Okay?"

The old man looked at Ning Juzi, and stirred the already viscous liquid with the stick in his hand.

Ning Juzi touched his chin.

"Okay, first throw the shoes in and dip them in. Don't forget the seam between the sole and the upper. There should be no dead ends in the waterproof seal."

Then, everyone saw the Taoist priest with a sense of demeanor, carefully put a cloth shoe into the clay pot, and then lifted it up instantly, bringing up a wave of off-white glue.

"It's done!"

Ning Sawzi immediately leaned over and carefully circled the shoe three times, his eyes were more tender and lingering than looking at Brother Mu Ye.

Rubber, rubber, this is rubber...

Zhang Sanniu rubbed his head, a good pair of shoes, now there are some unknown things glued on them, his mother-in-law can't say he will scold him when he goes back to his house.

But if he said that Mr. Ning favored these shoes, the woman would probably be so excited that she would blush and couldn't sleep, clamoring to make a pair for Mr. Ning as well.

Alas, in this city, I don't know how many women and girls miss Mr. Ning.

But Mr. Ning doesn't mean that much to anyone, he behaves openly and aboveboard, and pays great attention to it in daily life, so the women can only worry about it.

Unless they have the ability of the eldest son... Hehe.

Zhang Sanniu was thinking wildly, and Ning Fei's rubber shoes over there were almost dry.

He pressed the sole, felt the adhesiveness and elasticity of some glue, and nodded.

"It's not bad. It's much more elastic than the high-temperature resin we used before. It should be used as an apron and seal, and it's no problem to replace the high-temperature resin as an infusion tube."

"However, it is a bit soft for tires, so it can only be used as an inner tube, and a layer of resin must be attached to the outside for wear protection, otherwise the soft rubber is too easy to wear."

As he spoke, he waved to Zhang Sanniu.

"Brother Zhang, come here and try on these shoes, and step on them in the water to see if they leak."

Zhang Sanniu was thinking about the relationship between the eldest son and Mr. Ning, when he was called by his name unexpectedly, cold sweat broke out all over his body.

He replied tremblingly, with a look of bewilderment, and then the soldiers next to him reminded him to try on the shoes, and then he came back to his senses.

God, my uncle!What does it matter to others that the two young masters have a good relationship? !Anyway, they are all gods and figures that he can't touch in his life, he doesn't dare to think about them anymore!

Zhang Sanniu walked over with a guilty look on his face, and stepped on the puddle with his shoes on according to Ning Zaozi's request, and immediately found something wrong after stepping on it twice.

These shoes... are so soft! ?

The shoes made by his mother-in-law have always been much thicker than other people's shoes because the soles are made of straw and cotton cloth, and they are very wearable and durable.It is also because of this that his shoes all feel hard on the feet, and there has never been a situation where they bounce back slightly after stepping on them like this before.

At first he thought it was because of stepping on the mud pit, but after he walked on the dirt road, this soft feeling still followed, which surprised him very much.

"This...this is...?"

"Oh, it's rubber."

Ning Shaozi was instructing everyone to continue mowing the grass, and raised his head upon hearing this.

"Do you feel your shoes are wet?"

Zhang Sanniu was taken aback by his question, he raised his foot subconsciously, and touched it.

The upper of the shoe felt damp from being splashed by water, but the inside of the shoe...was still in the same state as he had worn it before, and it hadn't been infiltrated by muddy water at all!

"Ah! This... this...?!"

He stammered and couldn't speak for a long time, but Ningfei understood what he meant.

Ning Saw nodded.

"Your shoes are the only pair of waterproof shoes in the industry at present, not bad."

The effect of this green rubber dandelion far exceeded expectations. He had to save up some more, and he could make a sealed pressure vessel when he went back.

If he could really build a pressure boiler, then his steam engine could take a big step forward.

The old Taoist of Sanshui on the side was also gearing up, eager to get in front of Ning Fei.

"Ning Juzi, since we have found the rubber that can be used as an inner tube, then the bicycle model you made before..."

"Oh, it's ready to be glued. Regardless of the need to seal the valve if it is a pneumatic tire, you have to discuss this matter with Nada."

"Okay! Leave it to the old Taoist!"

Zhang Sanniu couldn't understand what they were talking about, and he didn't want to hear it.

Now all his attention is focused on this pair of shoes on his feet. The more he looks at them, the more beautiful he feels. These are unique waterproof shoes in the world. Look at the gray edges, how... so... so different!

The seasoned hands are rough, and the edges of the shoes that stick out are uneven, like a dog chewing on them. Even Zhang Sanniu wanted to praise him, but he really couldn't find a good word.

But it doesn't matter.

Zhang Sanniu stepped on the rubber-soled shoes, feeling that he was stepping on the clouds every step he took, light and light, which attracted the envious eyes of countless colleagues.

Scary, Zhang Sanniu is also the most romantic person in the border town.