"How did this draw it?" Li Jing was tall and big. Although he was blocked by someone in front of him, he still crossed the heads and saw the things on the paper, so he asked curiously.

Everyone looked at Li Jing’s question, because only he could answer this question.

Li Muyun took a deep breath and showed a proud expression. He was about to snatch a few words, but Li Er had already kicked his butt: "Speak quickly, why are you rubbing?"

It's really not popular. Such a big emperor always likes to kick others' ass, and he doesn't know how to restrain himself. Li Muyun stumbled for a moment and said with a drooping eyebrows: "This is actually drawn with a more precise scale with a compass, it's no big deal."

"Fuck, I also know this with a ruler. What I need to know is why the line is so thin and why the line is so straight." Although Li Er was very smart, his words fully exposed his ignorance.

If he really knew that he had drawn it with a ruler, then he shouldn't ask why it was so straight. Li Muyun curled his lips in contempt, but a flattering smile appeared on his face: "Your Majesty, in fact, this thing was painted with charcoal strips, so it's so delicate."

"Carbon strips? Can charcoal strips be used to write?" Changsun Wuji murmured, but soon realized that it seemed that charcoal strips could really be used, but no one usually used them.

However, Li Er didn't care about these trivial matters. He put the two pieces of paper in his hand and looked at it carefully for a long time, and then handed it back to Li Dejian: "I still take it as a treasure, but it turns out that it's just some strange tricks and tricks."

A strange trick? Li Muyun suddenly didn't like to listen to it. He didn't care if he had a physical condition and was happy when he was carrying the semen and physical condition. "Your Majesty, what you said is wrong. Although this mechanical drawing is not an elegant thing, its purpose is irreplaceable."

"The reason why Qin was powerful back then was that it unified the weights and measures, and the same tracks and the same text. Now, we are creating a knife with a small difference in length and weight, not to mention complex machinery such as crossbows and catapults."

"As early as eight or nine hundred years ago, our ancestors knew the principle of unified standards. Shouldn't we pass on this concept now? For example, if we would have standard drawing methods for the surveillance and all the ordnances were built according to unified standards, then on the battlefield, after a certain ordnance was destroyed, the broken part could be removed and replaced with other broken ordnances that were not damaged. This would allow the army to continue to maintain its combat effectiveness."

Li Er was surprised not getting angry this time, but listened carefully to Li Muyun bragging there, this was the first time he heard about the concept of modularity, but this did not mean that he did not know the benefits.

Li Muyun used standardized drawings to describe the simple modular production. Seeing the omnipotent Emperor of the Tang Dynasty stunned in front of him and speechless, he really felt a sense of comfort from the bottom of his heart.

But the old man Cheng Yaojin suddenly spoke aside at this time: "Boy, don't brag there. We didn't make any maps before the Tang Dynasty. Will we stop working as a prisoner? We haven't created good weapons? Good weapons?"

It has to be said that Cheng Yaojin and Li Muyun are really a perfect match. Both of them seem to have a physical physique. One person says something is right, and the other must object. Even if it makes no sense, then it must be said.

Li Er and others had actually realized the importance of Li Muyun's point of view just now, but at this moment, Cheng Yaojin suddenly spoke, and everyone wanted to see how Li Muyun would answer.

Li Muyun was also a little confused at this time. He really didn't know whether Lao Cheng was helping him or shattering himself, so he smacked his lips and said, "Standardization and modularization represent the progress of the times. Now he will be a supervisor, you can indeed create excellent equipment, but don't forget, the word efficiency. The simplest example is, Brother Dejian, you should have received steel ingots sent from Shuozhou. I wonder if you see the key?"

"The weights are the same. Just find two pieces, even in different batches, the weights are less than three cents." Li Dejian glanced at Li Muyun and replied seriously.

Three cents are the weight of three copper coins together, which is almost insignificant for each piece of copper ingot weighing ten kilograms. In other words, the weight of these steel ingots transported from Shuozhou is almost exactly the same, whether they are one month ago or half a year ago.

Li Shimin's originally calm face finally changed. He looked at Li Dejian and asked, "Are you saying true?"

"It's true!" Li Dejian nodded heavily: "I have tried this more than ten times myself, and the results are the same every time."

What is standard? This is called standard. It turns out that before I knew it, Li Muyun was already promoting the standardized operation. As long as the processing process of the steel ingots worth ten kilograms per piece of steel, the weight of the knife must be the same.

After hearing Li Dejian's promise, everyone was curious and regardless of the purpose of coming here, they led them to the warehouse where the steel ingots were stored, and then went in to select their favorite steel ingots.

When I took it out and weighed it, I immediately found that what Li Dejian said was true, and those ingots were actually all the same weight.

Now, Li Muyun became completely popular again. Cheng Yaojin, the devil, pulled him over, and his rough big hands were pinching his face, yelling while pinching: "You kid must not be a girl, right? Otherwise, how could you make such a meticulous thing?"

Li Muyun broke free from Cheng Laomo's hand speechlessly, rubbed the painful face that was pinched and said angrily: "My surname is Cheng, if you are jealous of my handsomeness, then it's straightforward. Why use such dirty tricks?"

"Oh, you guy is so capable, how dare you challenge me, Old Cheng?"

Cheng Yaojin was originally a man who was afraid that the world would not be in chaos. When talking about being unscathed by Li Muyun, he was not a little bit too much. Seeing that the old man was about to make trouble, Prince Xiaoyao immediately flashed to Li Shimin and said seriously: "Your Majesty, I think this standardized operation and modular production must be promoted. Only in this way can the soldiers of our Tang Dynasty have more advanced equipment."

Li Er curled his lips slightly, glanced at Yao Jin and Li Muyun, and smiled strangely, "Let's talk about this again, I see that Cheng Aiqing seems to have something to say to you, so I won't bother you."
Chapter completed!