Fang Yu sat upright, but cast her eyes to the corridor outside from time to time, with great anticipation in her heart. To be honest, she was looking forward to Yu Hua more than any other man in her life, including her own father.
At this time, a figure appeared, and Fang Yu immediately looked over. When he saw the person clearly, there was a hint of disappointment in his eyes. The person who came was not Yu Hua, but Zhou Yuan.
"You came so early and didn't eat?" Zhou Yuan walked into the classroom and saw Fang Yu sitting in the first row. He was stunned for a moment, with a look of astonishment on his face.
Fang Yu shook his head: "I haven't eaten, so I'm not hungry."
A meal is nothing, she cares more about knowledge and food.
If your body is just hungry, is this considered hungry?
This is not considered hungry.
Intellectually, she has been hungry for several years, this is real hunger.
"Fang Yu, after learning this knowledge, as I said yesterday, it is not allowed to be taught to outsiders without Yu Hua's permission. We must keep it secret for Brother Yu, do you understand?" Zhou Yuan understood what Fang Yu meant and came to
In the first row, Tong Fang Yu took an empty seat, put down his book, and said seriously.
Fang Yu looked serious and nodded seriously: "Understood." After Yu Hua left at noon yesterday, the two had a conversation and agreed on three principles.
First, it is forbidden to teach cartographic knowledge to outsiders without Yu Hua’s permission.
Second, information about cartography and Yu Hua must be kept strictly confidential.
Third, it is forbidden to ask about the origin of Yu Hua's cartographic ability.
Zhou Yuan nodded and didn't say much. He didn't need a heavy hammer to play the drum. Just remind him once.
The whole person sat upright and waited quietly.
For Zhou Yuan, who wants to become an artillery scientist, the importance of this class is also self-evident. A few years ago, Zhou Yuan had been looking for relevant knowledge about mechanical drawing, but now, he has not been able to get started.
.
The reason is still the same, lack of basic knowledge.
If you want to build artillery, you must learn how to draw and read pictures. Let’s not talk about looking at pictures. Drawing is the most important thing.
The two of them sat and waited quietly without any impatience. Time passed and soon it was half past twelve.
Finally, along with the sound of footsteps, under the gaze of the two people, a familiar figure who had been looking forward to it finally appeared.
"Sorry, I'm late. I just had a chat with classmate Tan Qing, which delayed my time." Yu Hua quickly entered the classroom and saw that the two of them had been sitting quietly for a long time, so he quickly apologized.
There was a conflict between the drawing class and Tan Qing's after-school tutoring time. Considering that Zhou Yuan and Fang Yu were major customers, Yu Hua could only reluctantly adjust Tan Qing's tutoring class to the afternoon break.
A tutoring class costs three yuan, and a drawing class costs thirty yuan. The ten-fold difference cannot be ignored.
"Master is here, stand up!" Fang Yu's voice was clear and high-pitched, like an oriole, with a hint of aura.
The next moment, Fang Yu and Zhou Yuan stood up directly and faced Yu Hua.
"Respect the teacher."
They both bowed down and bowed to Yu Hua as if they were respecting every gentleman.
"Hello, sir."
Looking at this scene, Yu Hua froze on the spot. After two seconds, an imperceptible smile appeared on his face, and he shook his head gently: "Hello, classmates, please sit down."
I have to say, it is really interesting to get along with this group of fairy classmates.
Follow the rules, pay attention to etiquette, and control the distance between status just right, so that no one will feel disgusted at all.
He is worthy of being a child of the elite.
Hearing Yu Hua's voice, Fang Yu and Zhou Yuan sat down, straightened their backs, looked up at Yu Hua, opened their desktop notes, and prepared pencils for sketching.
"Drawing, the common technical language in the engineering field, is divided into three categories: mechanical drawing, engineering drawing and chemical drawing. If you want to engage in any type of engineering research and manufacturing, you cannot do without drawing. Today's drawing class mainly talks about mechanical drawing."
After Yu Hua finished speaking, he picked up the chalk and wrote the four characters "mechanical drawing" on the blackboard. Then he turned to face the two people: "If you want to learn mechanical drawing, you cannot do without drawing standards. Each industrial country has its own drawing standards." Standards, American standards, British standards, French standards, German standards, Japanese standards. my country's industrial development is backward and the level is weak. There is no unified mechanical drawing standard. I got an American standard by chance. The book has been lost. Fortunately I still remember a lot of content and will explain it to you one by one."
I simply made up the origin of how to learn to draw to make up for the lack of content before.
As for whether it is true.
Does it really matter?
Fang Yu and Zhou Yuan took pencils and kept taking shorthand, writing down the knowledge points explained by Yu Hua. They turned a blind eye to the origin of the drawing standards explained by Yu Hua and didn't care.
"The first point of the drawing standards, the drawing format, is required to be rectangular, white, and the five basic drawing sizes are A0, A1, A2, A3, and A4. These are the basic sizes of the five sizes of drawings, and they are sold outside the school.
,The second point is the picture frame format. The picture frame must be drawn with thick solid lines on the drawing. The picture must be drawn inside the picture frame. It is divided into two types: binding edge and non-binding edge. The same type of product is only allowed to use the same picture.
Style format…”
Yu Hua spoke in detail, speaking slowly, trying to make sure the two of them could understand and take note of it.
Fang Yu and Zhou Yuan kept taking notes, writing non-stop with their right hands. They were more focused and serious than ever before, writing down everything from the drawing format requirements of the drawing standards to the frame format.
After ten minutes, the explanation of the drawing format and format content was completed.
"Do you understand?" Yu Hua felt his mouth was a little dry, took a sip of water, and looked at the two of them.
"Mr. Hui, I've already written it down, no problem." Fang Yu nodded.
Zhou Yuan responded: "I understand."
"Then I'll talk a little bit faster next." Seeing the two of them learning without any pressure, Yu Hua sighed. If he hadn't gained the trust of 30 million compatriots and his brain had evolved, he would have been better than himself in his previous life.
Not as good as Fang Yu and Zhou Yuan in front of me.
Not to mention the group of talented geniuses in history.
Among other things, the world-famous Deng Jiaxian is in Chongde School next door and seems to be in his first year of high school this year.
Cartography standards are not difficult in nature, and most of the knowledge points are very simple. What is difficult is constructing cartography standards.
After finishing talking about the tedious drawing format and format, the next step involves proportions, fonts and drawing lines. Yu Hua did not change the proportions, chose simplified Chinese fonts, and the drawing lines are all national standard line types of later generations.
The proportions and fonts are concise and explained quickly. When it comes to the line drawing stage, you have to actually draw the lines. Yu Hua uses chalk to draw each type of line one by one.
Fang Yu and Zhou Yuan became more and more surprised as they progressed, and the more they learned, the more eager they became. Like sponges, they continued to absorb the systematic knowledge described by Yu Hua, and quickly mastered the basic skills from being just a layman.
Later, Yu Hua called the two of them to come up and draw the lines by hand.
Drawing is essentially about practice, and just reading and memorizing it is of no use.
The two of them drew all types of lines themselves and memorized the characteristics and standards of each type of line as quickly as possible. Seeing that they were really talented in drawing, Yu Hua's lecture speed increased again.
Fifty minutes later.
"Okay, that's it for today. You have learned how to represent machine parts. In class tomorrow, you will draw a six-dimensional view and a directional view of this special-shaped part. This is your homework. You must complete it. Remember to buy five
Ten pieces of paper of each size are used for drawing." Seeing that it was almost time, Yu Hua ended today's drawing class and said to the two of them.
In fifty minutes, the progress of mechanical drawing was reduced to the representation method of machine parts, and the progress was objective.
"Mr. Xie teaches." Fang Yu and Zhou Yuan nodded, wrote down the homework and requirements told by Yu Hua, and prepared to buy drawings and draw pictures later. Then, as if they had found a treasure, they collected the notebooks filled with information on the table.
good.
This notebook, full of cartographic information, is extremely important to the two of them.
"I'm leaving first. Go back and take a rest while you continue to study." Yu Hua smiled at the two of them. This experience of being both a student and a teacher was very interesting.
Now that the role of a gentleman is over, it's time for him to go back to being a student.
Yesterday, Yu Hua had read all the foreign high school mathematics textbooks he had prepared. Today, Yu Hua is going to look for some more mathematics textbooks.