"Yan Liben, your design is simply unbearable! It's just a flat one, and it can't even be three-dimensional. In addition, what you explained, and the things on the design drawings are a little bit out of the horse's mouth, and I can't understand them at all. However, this is all a problem in the design drawing, you still have to find a way to solve this design drawing, so that we can see it at a glance. Jingwen said.

Yan Liben also said helplessly: "I can't help it, because the current engineering drawings are like this." ”

"Okay, I'll draw a picture for you, you look at my design, and you'll know how bad your design is." Jingwen said.

Jingwen immediately asked someone to get some charcoal powder, and then got some glue. And charcoal powder is abundant in this day and age, and it is not difficult to find. As for glue, there was naturally no chemical glue in later generations, but the Tang Dynasty had a Tang Dynasty method, that is, fish glue. Although fish gelatin is more expensive, but this is the official yamen, will it still be lacking?

Jingwen stirred the charcoal powder with fish glue, pressed it into a long strip, and dried it over low heat after the gold was ready. And after drying, Jingwen sharpened the end with a knife, and a hard pen made of charcoal powder became it. This is still due to Jingwen's experience in helping Princess Changle make that ink block at that time, so Jingwen did not encounter any obstacles to this charcoal pen.

When everyone saw this charcoal, they obviously didn't know what Jingwen wanted to do, and Jingwen immediately started drawing on a drawing. Others didn't know what Jingwen meant, but Yan Liben knew that Jingwen was drawing engineering drawings. And Jingwen found a straight thing as a drawing ruler, and then began to draw according to what Yan Liben said just now. And this engineering drawing is mainly the drawings on the roadbed, and Jingwen also draws according to the three-dimensional pattern, which makes Yan Liben surprised for a while.

Yan Liben didn't expect that drawing engineering drawings could be done like this. These drawings are simply three-dimensional, as if the whole project is right in front of your eyes. And Yan Liben knew that if he followed those drawings they had drawn before. I'm afraid that only the designer himself can understand it, and other designers can't understand the design drawing at all. In ancient times, only designers could personally preside over the construction, and others could not guide the construction according to the design and construction drawings. This is also the reason why the ancient designer and the contractor are one person. Because others can't understand their own design, and it's difficult for others to be able to build according to the designer's ideas.

However, if you follow this design of Jingwen, it is marked with numbers one by one, and even the distance on each drawing, the distance of the road surface, the height, and the distance of various items are marked with length. So even if it's another designer. They are also able to construct according to the drawings. What's more, the scale of this engineering design drawing is very exquisite, and the accuracy is very high. If you use a brush to draw as you have done in the past, you may not be able to achieve high accuracy. Although Yan Liben didn't want to admit it, he had to admit that the drawing accuracy of the brush was not as good as that of the hard pen. Hard pens seem to be inherently prepared for drawing drawings with high precision.

"Yan Liben, if you explain according to my construction drawing, you should be able to see many places at a glance." Jingwen said.

Yan Liben saw this construction drawing made of charcoal and nodded repeatedly, obviously he knew that this construction drawing was much better than his own. If it's your own share. I'm afraid that it can't be explained to others at all, because all the numbers are recorded in Yan Liben's own mind, and they can't be marked on the drawings.

"Ladies and gentlemen, the distance on the road surface of our Changluochi Road is three feet, eight feet, and eight inches. Able to present all carriages. Ordinary vehicles are also able to pass, which can also greatly dredge traffic. And the thickness of the roadbed is about ......," Yan Liben began to explain.

And this time, the investors who paid for it understood the purpose of this road. As long as you combine the parameters on the drawing, it can be easily understood. In addition, the design drawings of Jingwen are very three-dimensional. In this way, many people can see it at a glance and have a deep understanding of this Changluo Chi Road. And Yan Liben is also very happy, this design drawing makes everyone understand as soon as he says it. And usually when he explains the design drawings to others. Other laymen don't understand it at all, and even their peers may not be able to really understand it. And such a situation is very difficult for real construction, because the construction personnel do not understand the design drawings. But now, with Jingwen's design drawing, even these layman investors understand this design drawing, which is simply a sharp weapon. And Yan Liben knew that the construction would probably be much smoother in the future, because of these design drawings. A single design drawing is enough to change the entire history of building construction.

"Jingwen Festival envoy, thank you very much! If it weren't for you, I'm afraid I wouldn't have been able to explain it! Yan Liben said.

And Jingwen also said: "No, they have already invested anyway, can they not continue to invest because they don't understand?" ”

"You can't say that, they spend money, so I'm going to make them understand what they're paying for. Now it is actually the Cui family who led them to invest, if they don't understand, then I'm afraid there may not be a next time in the future. Our Yan family has been engaged in civil engineering construction for generations, and we have met many dignitaries, but they don't understand these things. Many times, it's because they don't understand that a project just blows. And now that I have these drawings of Jingwen Jiedu, it will be much easier for us in the future. At that time, many of our projects in the world will be able to be further implemented. What a benefit this has been for our development! Yan Liben said excitedly.

Jingwen didn't expect that this Yan Liben would still have such a professional ethic. Although Yan Liben is now an official, their family is still an engineering designer in their bones, and they attach great importance to this kind of engineering design. If the Yan family didn't have engineering design, then they probably wouldn't be taken seriously. Although the ancient times mainly attached importance to the Confucian classics, there were some characters that they could not live without. The Yan family is like this, the ancient emperor wanted to build a large number of buildings, and he really couldn't do without the Yan family, a family of engineering and construction. And the Yan family ate this bowl of rice, and as a result, in less than a hundred years, the dynasty changed several times, and as a result, they did not fall, but became more and more prosperous. Therefore, it is very important to learn a professional technology! (To be continued......)