[At the request of book friends in the group, the second update has been posted in advance. Please ask for all kinds of content on Monday.]

With the order from Mr. Cheap, everything turned around and the R&D business was restarted.

I thought that with the right materials, it would be a matter of course to create an inflatable inner tube. I didn't want to fiddle with it for a few days, but I encountered a problem again.

The inner tube was made, and it looked decent, but when I actually used it on the borrowed carriage, its original shape was immediately revealed.

It’s still the same old problem: can’t bear the pressure!

But this time it's not a matter of material. High-end water pipes with added silk already have sufficient toughness and strength.

The problem lies in the interface.

I don’t know whether it’s because the heat is not properly controlled or there is something wrong with the technique. As long as the pressure on the tire is too great, the joint will burst in an instant.

It happened several times after trying it.

Lai Shun was still calm, but I was so anxious that I was so anxious. Lai Shun was really upset, but he couldn't find a solution to the problem for a while.

It was the night shift again today.

While he was tending to the boiler, he was still thinking about inflating the tires.

"Hey, hey!"

Just as he was concentrating on thinking, he heard Jiao Da yell: "What are you thinking about, kid? The handle of the shovel is almost burning!"

Laishun looked down and realized that he had finished adding coal to the boiler, so he put the shovel on the coal-adding port. At this moment, the tip of the shovel was already red-hot!

He quickly took back the shovel and closed the coal-adding port with his foot.

After finding a place out of the way, he carefully laid the red shovel flat. As soon as Laishun stood up and turned around, he almost bumped into Jiao Da's face.

He hurriedly made a tactical retreat, laughed and cursed: "Old man, you are a bit ungrateful."

"Why don't you practice martial ethics?"

Jiao Da obviously didn't understand this joke. He looked at Lai Shun suspiciously and asked: "What's happened to your kid recently? Have you encountered any difficulties? Other people can't help. Just say something about murder and arson. You, Grandpa Jiao, will never do anything."

Nothing to say."

You obviously want to kill people and set fires, right?!

Lai Shun complained in his heart and planned to just brush it off casually.

But when the words came to his lips, he suddenly remembered Jiao Da's previous repair of the water pump, and his comment as a "fourth-level worker".

or……

Let this old man help you with the details?

So Laishun said covertly: "Forget it about murder and arson. Don't you always brag about your skill? Today I will test you. For example, there are two water pipes - the rubber ones. I want to connect them together."

root……"

"It's easy, you just put it on the fire and bake it until it becomes soft and then slap the two ends together and it's done!"

"Listen to what I have to say first!"

Laishun glared at the old man and continued to gesture: "What I mean is that after connecting them, they must not only fit tightly, but also be as strong as before."

Jiao Dali pondered for a while and gave a decisive answer: "Just buy the ones with long roots! Anyway, your family is not short of these three melons and two dates."

Laishun: "..."

He glared at the old man again: "Seriously!"

"Serious..."

This time the old man became serious and asked: "You ask, is it not strong after being glued, or is it leaking after being glued?"

"The main reason is that it's not strong enough."

"That's easy!"

The old man said without hesitation: "You patch it - get a piece of rubber and bake it until it's soft, then wrap the interface section, won't it be strong?!"

yes!

This is really a word that wakes up the dreamer!

In the past two days, Laishun has only been looking for the cause on the heat and cross section, but he forgot that he can also use external auxiliary means to supplement the strength of the interface!

This is actually because he has never done manual work since he was a child, so he is blind and does not know how to adapt.

However, after being damaged by the Jiao Da point, Laishun also quickly drew a parallel and thought of thinning the interface to prevent the two layers of skin from being too thick and causing tire deformation.

At this point, the problem that has been bothering me for many days is solved!

Laishun was pacing back and forth excitedly, wishing he could go home right away and make that damn inflatable inner tube.

"What's wrong with you kid?"

What Jiao Da saw was baffling. Just the few idle remarks he just made. What's there to be happy about?

Laishun stopped and looked at Jiao Da, thinking that the old man had done him a big favor, so he evaded the truth and said something false: "I made a gadget, you will know when it is finished.

"

After saying that, he grinned at Jiao Da again: "You are also responsible for this. Maybe we will be out of the sea of ​​misery together."

After saying this, Laishun felt inexplicably and a little regretful - it would be great if this sea of ​​suffering did not refer to the boiler room, but the entire Rongguo Mansion.

When he suppressed the little melancholy in his heart, he found that Jiao Da was looking at him blankly.

"What's wrong with you?"

This time it was Lai Shun's turn to be curious.

"nothing."

Jiao Da finally came to his senses, shook his head and said, "That's what I said just now, it sounds familiar."

As he said that, the old man smiled contemptuously: "But if you had even the slightest ability, you wouldn't end up in this boiler room."

"That's what you said!"

Laishun pulled out his chest: "As the saying goes, 'Heroes don't ask where they come from, and gangsters don't ask how old they are.' In their early years, didn't Ning Guo Gong and Rong Guo Gong also do long-term work at Taizu's house?"

Jiao Da burst out laughing after hearing this, obviously not taking Laishun's 'lofty words' seriously.

Laishun saw him smiling happily and couldn't help but ask what he had been doubting in his heart: "Speaking of Ning Guogong, I heard that you not only followed him on the battlefield, but also saved his life? Just because of this

It’s a good time since the founding of the country, so why didn’t you ask him to get a full-time official position?”

Laishun just asked casually, but his face suddenly turned cold, and he asked with sharp eyes: "What do you mean by that?!"

This is a surprise!

If we had just met him, Laishun might have been really shocked by him.

Now, he just raised his eyebrows and cursed: "You old guy, are you a dog? Why do you say you fall out so easily?"

After a pause, he couldn't help but tease: "Is it because I poked you in the foot? Could it be that you mentioned this matter to Ning Guogong, but he ignored you at all?"

Jiao Da didn't say a word, just stared at Lai Shun until Lai Shun looked at Mao, and then he managed to say: "What's wrong with staying in the Duke's Mansion?"

"good?"

Laishun tilted his head to look at the holes in his cotton-padded jacket, then looked at his jet-black shoes, and finally spread his hands and said, "If you had a little bit of good, you wouldn't be reduced to this boiler room."

After a pause, he couldn't help but complain: "No matter how favored a slave is, how can it be compared to being an official? Let me tell you, even if you are a commoner, it is better than being a slave!"

As soon as these words came out, Jiao Da's old face showed some subtle changes, but he did not open his mouth to refute Laishun.

This is not his usual style.

"Old man."

Lai Shunqi said: "What I just said didn't really hurt you, did it?"

However, Jiao Da was silent for a while, then suddenly asked: "Do you want to leave your country?"

"Well……"

Laishun didn't expect that when he was happy for a moment and chatted for a few words with Jiao Duo, he actually got into his thoughts!

However, Laishun would definitely not admit such a thing personally, so he smiled and tried to deal with it.

Unexpectedly, Jiao Da didn't wait for his response and said again: "If I have any pain, it is that I don't have a son or a half under my knees."

This preface does not match the following, what exactly is it trying to say?

Lai Shunzheng felt baffled, but Jiao Da actually made another absurd suggestion: "How about you recognize me as your godfather?"

Laishun: "..."

Where is this?

Why did you suddenly mention recognizing your godfather?!

He had one father in his previous life, and now he has the same father. If he recognizes Jiao Da again, wouldn't he become a slave of the third surname?

Laishun immediately stood up, looked down at Jiao Da, and said angrily: "Old man, you are so stubborn in the sky, why do you still want to take advantage of me? If it weren't for your age, I would spit on you right now.

A look on his face, can you believe it?"

Jiao Da also raised his head to look at Lai Shun, and stared at each other for a long time. His old face suddenly felt like a spring breeze had turned into rain, and he smiled in relief.

Looking at his weird smile, Laishun had a thought in his mind:

This old man...
Chapter completed!