"Xiao Xuan, can you lend this scooter to Brother Wei to take a look."

As soon as a few people sat on the stone bench in the west courtyard, and before they could greet each other for a while, Yan Shaoning couldn't hold back the monkey hurry.

This Yan Shaoning seemed to be an urgent child, Li Zexuan was a little amused in his heart, so he said: "No problem, Brother Shaoning can watch it if he wants to." ”

When Yan Shaoning heard this, he hurriedly lifted the scooter directly to the stone table, and then came over himself to observe it carefully. I saw that he turned the scooter over and over from time to time, and there were sighs in his mouth, and in less than a quarter of an hour, Yan Shaoning studied all the structures of the scooter thoroughly, he put down the scooter, looked at Li Zexuan and said:

"Xiao Xuan, although the structure of this scooter is simple, this idea is really surprising, why can't I think of such a simple and convenient thing before? I really can't figure it out for my brother. ”

Yan Shaoning said and hammered his head in frustration.

Li Zexuan said with a smile: "Brother Shaoning, don't be annoyed, in fact, if you think about it carefully, many of the things we use in our lives generally have uncomplicated structures, such as carriages, its structure is also very simple, but why didn't anyone think of making carriages hundreds of years ago?"

In the end, it is a matter of one's creative thinking. My master once told me that nothing can be done unless you think of it. Because sometimes creativity is far more valuable than technology, and if you don't think broadly, you'll never be able to create something new and valuable. ”

Yan Shaoning was like an initiation, stroked his palms and laughed: "Yes, yes, that's what it means, I have encountered many similar problems before for my brother, it is obviously a very simple thing, but I can't imagine it, Xiao Xuan, what you said is a point." ”

Li Chengqian also nodded thoughtfully on the side.

Li Zexuan said modestly: "It's just that Brother Shaoning is a fan of the authorities, many times, you jump out of the game and change your thinking, and you can often get unexpected results." ”

Yan Shaoning nodded approvingly, looked at the scooter, and said: "But Xiao Xuan, your scooter has a lot of imperfections, for example, this wheel is estimated to be very jerky when it rotates, and your handrail at the front end can only be used as a handrail, and cannot control the steering of the scooter." ”

Li Zexuan nodded, and secretly said that this guy is worthy of being from an engineering family, and he really understands the mechanical structure, and he can see the defects of this simple scooter at a glance.

"Well, what Brother Shaoning said is very true, when I made this scooter, it was just to coax the little sister's casual actions, and this scooter can indeed continue to be improved."

"Oh? So, Xiao Xuan, you already have an improvement plan? Yan Shaoning was very curious when he heard this, he could see the problem of the scooter, it didn't mean that he had a solution to the problem now.

"The younger brother has some ideas. Xiaoxi, you go to the kitchen and get me an unburned firewood stick. Li Zexuan instructed Xiao Xi.

He can barely write with a brush, but drawing is really difficult for him. The lines of engineering drawing need to be horizontal and vertical, and the soft tip of the brush is very difficult to do, at least not for him.

Xiao Xi took the order and left, Li Zexuan saw that Yan Shaoning and Li Chengqian were both puzzled, so he explained with a smile: "The younger brother is more accustomed to drawing with charcoal, and I want to draw a drawing for Brother Shaoning, so it is more clear to talk about it at a glance." ”

The two nodded.

After a while, Xiao Xi came over with a burning stick. After Li Zexuan took it, he pulled out his long sword and brushed a few swords, and everyone felt a flower in front of them, and they saw that Li Zexuan had an extra slender wooden stick in his hand, and the bottom was still pointy.

Li Zexuan also used the wind chasing sword to "sharpen the pencil" for the first time, and when he saw that the result was not bad, he couldn't help but sigh in his heart that his control of power was more proficient.

"Good swordsmanship, I didn't expect Xiao Xuan to be able to swordsmanship." Yan Shaoning exclaimed.

The Tang people are still martial, and the children of high-ranking officials and nobles love swords, although Yan Shaoning's swordsmanship is not high, his eyesight is still strong, he didn't expect that this friend he just made not only has unique ideas in equipment, but also his swordsmanship looks quite high, Yan Shaoning is now more and more interested in Li Zexuan.

Li Zexuan didn't answer, directly spread out a piece of rice paper on the stone table, and began to draw.

In his previous life, Li Zexuan was very proficient in mechanical drawing, whether it was computer drawing or manual drawing, the drawings he drew basically did not need to be modified by the teacher, and could be directly sent to the factory for processing.

In his previous life, when he was in college, Li Zexuan's college organized an internship at FAW headquarters, and their task was to go to the workshop, draw down the key parts of the car that they had seen in the workshop, and calibrate the size.

At that time, due to the very limited drawing conditions in the workshop, even a ruler could not be used, and as a result, many students drew crookedly like a dog planer, but Li Zexuan painted like a work of art.

It's not because he has taken an art interest class, but Li Zexuan has a super strong copying ability since he was a child, and when he was a child, he was able to completely draw the flying dragon on the New Year's painting on the wall, and the painting was beautiful.

Later, after going to college, Li Zexuan sometimes couldn't help but regret why he didn't go to an art school in the first place, and I have to say that Li Zexuan is an engineering dog with art cells.

At this moment, Li Zexuan was in front of the rice paper, closed his eyes, and recalled the structure of the ball bearing, and the wonderful thing was that Li Zexuan quickly formed a three-dimensional structural model of the ball bearing in his mind, and this strange scene frightened him almost exclaimed.

When he opened his eyes and saw that several people were waiting for him to lift the pen, Li Zexuan didn't care about the reason why he had a three-dimensional image in his mind, and directly picked up the pen and painted.

At this moment, it is really smooth, and the pen is like a god, Li Zexuan feels very wonderful at the moment, as if his brain is a computer, and his hand is a printer, and the three-dimensional image in his brain is completely reproduced on the rice paper directly through his hand.

Soon, Li Zexuan drew the three views of the ball bearing and the isometric view on the rice paper, of course, he did not mark the size and tolerance, he is only explaining the principle of the ball bearing now, and does not need these. Li Zexuan put down his pen and breathed a sigh of relief.

Yan Shaoning couldn't wait to come up and see what Li Zexuan was painting.

I saw that there were four different pictures painted on the rice paper, the lines were horizontal and vertical, real and virtual, this kind of painting, Yan Shaoning saw it for the first time, but why did he draw four pictures, is it four parts?

Yan Shaoning looked at Li Zexuan with a confused expression.

Li Zexuan was inexplicably stunned by him, and wondered: "What's the matter, Brother Shaoning?" What's wrong? ”

Yan Shaoning pointed to the rice paper and asked embarrassedly, "Xiao Xuan, why are you drawing four pictures?" What does this mean? ”

Li Zexuan was stunned, didn't the ancient craftsmen draw drawings like this? Don't they know about the three views?

"Eh, Brother Shaoning, the younger brother drew a mechanical drawing for the first time, maybe the drawing method is different from yours, I don't know how Brother Shaoning drew before?"

Yan Shaoning suddenly said, "Oh, so that's the case, it just so happens that there are a few drawings on my brother, Xiao Xuan will show you." ”

With that, he pulled out a roll of drawings from his cuff.

Li Zexuan took the drawing, opened it and took a look, sure enough, the ancient craftsmen had not yet begun to draw with three views, they only drew the floor plan, and the places that could not be expressed in the plane plan were directly marked with words. Li Zexuan couldn't help but have a headache when he looked at the dense small characters on the drawing, this is too inconvenient.

No, you have to popularize modern engineering drawing methods for Yan Shaoning, otherwise it will be too troublesome to communicate in the future, Li Zexuan said secretly in his heart.

……