"Cao Yi, you will go to Jiangning Mansion to go to school in the next two days, and then you will first find Lu Gong to make a good compensation, and then say a few pleasing and intimate words to make him happy, and finally send a few jars of wine, this matter will be almost solved, and I will live up to your parents' trust." Wang Zhiyuan looked at Cao Yi and said.

Cao Yi nodded, and said with a hearty smile: "Got it, Uncle Wang!" Since I agreed, I will definitely go, but Uncle Wang, you are very skilled in this apology and apology routine, I guess I am afraid that I often do this when I was a child when I was in school, hahaha! ”

Wang Zhiyuan's old face turned red, he nodded at Cao Yi with his hand, and pretended to be angry: "Okay, you Cao Yi, you dare to make fun of your Uncle Wang, no big or small, punish you for drinking with me at night, I want to see if your alcohol consumption is as aggressive as your words!" ”

"Since Uncle Wang has spoken, I have no choice but to be respectful and obey my fate, even if the amount of alcohol is bad, I must sacrifice my life to accompany the gentleman to have a good drink." Cao Yi said with a smile, then turned his head to Red Sleeves and said, "Red Sleeves, you wait and tell the dining room to make a table of sumptuous and exquisite dishes in the evening, and the five of us will have a good gathering." ”

Red Sleeves nodded and took the order, and came back after a while, just holding a wooden box in his hand, putting it on the bookcase, and whispering to Cao Yi: "Childe, this is the crystal piece you asked me to find someone to polish last time, according to your instructions, a large convex crystal piece and a small concave crystal piece, grinding out several pairs, you see!" ”

"Oh, really?" Cao Yi got up from the chair excitedly, walked quickly to the side of the desk, opened the wooden box, and sure enough, he saw several pairs of concave and convex crystal lenses that had been polished, Cao Yi excitedly took out a concave lens and a convex lens and looked at it carefully, the craftsmanship of this era is really good, all the mirrors are very smooth, and the crystal lenses are also flawless, and the imaging effect made by the telescope should be very good.

Here, Cao Yi has always been an image of an over-teenager and an old man in the minds of Wang Zhiyuan and Liu Baiqing, he rarely likes to be angry and angry, and he is usually more calm like an old monster who has lived for decades, and he is rarely able to see it when he is so excited just now, and at this time he is also curiously surrounded, and even the attacker is secretly approaching, looking at the crystal piece in the box with a pair of beautiful eyes on the side, and then looking at Cao Yi, and then looking at the crystal piece in the box, I don't know what she is thinking in her heart at this time.

Wang Zhiyuan also took out a crystal lens from the wooden box at this time, put it in his hand and looked at it carefully, and couldn't help but wonder in his heart: "There is nothing special about this, it is just a disc that grinds the crystal into a convex or concave piece, and the surface is slightly polished, and there is no special shape or carving." Could it be that this is a semi-finished product, and Cao Yi wants to polish and make it himself? It's just that he doesn't usually have a hobby in this area? ’

Wang Zhiyuan also looked at the crystal piece in his hand at this time, then looked at the excited expression on Cao Yi's face at this time, and then looked at the crystal piece in his hand, which was exactly the same as the action of attacking people just now. He was still thinking in his head, this is really nothing special, what is this kid Cao Yi excited about?

When Cao Yi put the two concave and convex lenses in his hand back into the wooden box, Wang Zhiyuan finally couldn't hold back the curiosity in his heart and asked: "Cao Yi, what is this crystal piece used for, look at what makes you like this!" ”

Cao Yi laughed, his face was full of pride, and he said mysteriously: "Secret!" ”

“……”

Everyone couldn't help but be speechless for a while, Wang Zhiyuan could only find out in Cao Yi at this moment that he was indeed just a fifteen-year-old little adult, and he still had a little playfulness that this age should have.

It's not that Cao Yi deliberately kept it secret and didn't tell them, it's just that now there are only lenses and no containers or carriers to form them into a telescope, and now they don't have a very intuitive concept or cognition when they say it, so it is better to let them see it directly after making it when the time comes, so that there will be a greater shock.

Now that the hour is still early for dinner, Cao Yi came to his desk, spread out the paper, asked the attacker to study ink for him, closed his eyes and thought: whether this telescope body is made of monoculars or binoculars, in this era, it seems that monoculars are more suitable and easy to make, well! That's it, let's make a monocular. What is the material of the mirror body?

With wood? Or use leather, brass seems to have been used for a period of time in the previous life, iron is easy to rust when it touches water or something, steel is not OK? I forgot, magnesium aluminum alloy I remember, but unfortunately there is no such material in this era. It seems that only brass is the most suitable, brass has a small coefficient of cold and hot expansion, is not easy to deform, easy to process, and is not easy to rust, other materials are not as good as it, so use brass to do it.

The material is settled, to make a monocular, it must be telescopic, well, this must also be drawn on the drawing, otherwise people in this era will not understand.

After Cao Yi thought about everything, he opened his eyes and drew on the drawing, half a tea time had passed...... Cao Yi's painting masterpiece is complete, just from the constantly beating corners of the eyes of the people next to him, you can see that the level of this painting is ...... It's still ugly and miserable,

"Childe, what kind of bamboo is this, why is there no bamboo leaves, only the smooth bamboo knots remain, this is cut down?" Liu Baiqing pointed to the monocular telescope on the drawing and asked.

This time it was Cao Yi's turn to make the corners of his eyes beat, he coughed, and then pretended not to hear Liu Baiqing's question, and said: "This is a copper tube I want to make, it is actually hollow, it is composed of large and small tubes, copper pipes of different thicknesses, thin copper pipes can be incorporated into the thick copper pipes, so that they can be put and retracted when they are connected together, and the effect of stretching and shrinking is the longest is exactly the long copper pipe in my picture, and the shortest is the short tube next to it." ”

"Oh, it turned out to be a retractable copper pipe, I thought this was a long bamboo that was cut down, and the short one was a cut bamboo pier" Liu Baiqing didn't notice the rich expression on Cao Yi's face at this time, and said to himself.

“……”

Cao Yi glanced at Liu Baiqing with his eyes, but Liu Baiqing didn't observe it at all, the behavior between the two people was fully seen by Wang Zhiyuan, which made Wang Zhiyuan lower his head and snicker, in order to prevent laughter, he deliberately coughed, and almost choked on his own saliva.

At this time, the attacker walked up, carefully looked at the things drawn on Cao Yi's paper, and then turned his head sideways to recall the words that Cao Yi used to describe just now, and after digesting it, he raised his head and smiled at Cao Yi, and said softly: "Childe, if you let me try it, I should be able to draw the diagram you just depicted in words." ”

Cao Yi nodded, and hurriedly said: "Okay, okay, you can draw it well, if you draw it right, my son will be greatly rewarded." After finishing speaking, he gave up his position to the attacker, and then turned around to the attacker.

Attacking Qianqian Su held the brush in his hand, and in just a few strokes, he outlined the telescopic copper tube that Cao Yi had not drawn for a long time, and sure enough, there was no harm if there was no comparison, compared with the two paintings before and after, one was like a child's graffiti, and the other was indeed painted by a master in the painting world, which shows that the attack is indeed good, but Cao Yi's painting is not only very bad, but very poor.

After a while, the attacker drew the appeal conveyed by Cao Yi's hand-painting and dictation just now, whether it was the whole or local details, all the drawings were vivid and realistic, Wang Zhiyuan, Liu Baiqing and Red Sleeves may not know what this telescopic monocular originally looked like, but Cao Yi, who came over as a later generation, understood at a glance that what the attacker drew was exactly the same as the ancient copper monocular telescope of later generations.

Cao Yi nodded to the attacker, and directly praised him: "You are really a versatile female talent, I didn't find it before, it seems that in the future, you all need to cultivate it more and dig hard." ”

The attacker blushed at this time, lowered his head and didn't dare to look at Cao Yi, and replied in a very light voice: "The son has won the award, and the slave maid just likes to draw since she was a child, so she is willing to put effort into it." Cao Yi looked at this woman who was born with a strange fragrance, not only has a good figure, beautiful appearance, and a moving temperament, but now she has found such a good talent for painting, and she is really a good seedling who has been cultivated in Jinfeng Building since she was a child according to the future Oiran head brand.