The big room was brightly lit, and Cheng Yi stepped into the door, his eyes couldn't help but narrow.

"It's ...... again"

There are oil lamps lit on the walls around the house, which are very bright, and you can see that the room is very clean, the tables, chairs, and walls are all dusty, and even the floor is covered with thick cloth.

A young man in front of the room was smiling, and a slightly chubby old man behind the young man squinted and saw that it was a mirror, half a square circumference, a mirror that had never been seen and could not be imagined. Cheng Yi's status and status, what kind of mirror has he never seen, but how brightly polished the bronze mirror is compared with the mirror in front of him, just like the difference between heaven and earth, it is completely incomparable.

Cheng Yi took two steps, looked at Qin Xianao in the mirror, and then looked at Qin Xianao beside him, exactly the same figure, figure, and temperament.

"Young Master Qin!"

Cheng Ming, who walked in after Cheng Yi, was also stunned.

"How could there be...... Such a mirror that is so clear that the spider silk is visible, and the color is exactly the same?" Cheng Ming muttered to himself.

"This one is made of glass. Qin Min walked in and said proudly, although the idea was from the Qin Dynasty, and all kinds of problems were solved under the awakening of the Qin Dynasty, but this mirror was successfully made by him Qin Min himself, and at this time, looking at Cheng Yi and Cheng Ming's surprised expressions, Qin Min was naturally proud.

"Glass?"

Cheng Yi took a breath and looked at Qin Chao: "Young Master Qin, what principle is used in this? Could it be that this is a microscope?"

"Haha, this is not a microscope. Qin Ya laughed on the side.

Qin Chao smiled slightly: "Mr. Yichuan, to put it simply, it is to cross silver or mercury behind the glass, this kind of thing is troublesome to cross the film behind the mirror." ”

"Silver behind the glass?" Cheng Yi exclaimed, excitedly looking at the figure in the mirror, and kept nodding. "Clear, this reflected mirror is too clear, good thing, press your 'optics', this mirror, this mirror can be used to reflect the light and concentrate the light at the critical moment. ”

Qin Chao nodded. Walked to a platform: "Mr. Yichuan, please come over here." ”

"Oh?"

Cheng Yilian walked over, clean and polished, and on the yellowed table with a tube of oil, there were all kinds of utensils, some of which Cheng Yi had never seen, and some, such as brushes and inkstones placed in the basin. A pen holder, or even a stack of papers, with a circular pattern drawn on the top of the stack.

Cheng Yi's eyes fell on the pattern, and Cheng Yi found that he couldn't guess what he was drawing.

"That's a cell!"

Qin Min's voice sounded.

"Cells?"

Cheng Yi blinked, this is another new term that he has never heard before.

"It's the cells of the leaves of the camphor tree at the door, you can see it with this microscope. Qin Min smiled and pointed to a strange device next to him. Qin Chaolian introduced: "Mr. Yichuan, this is the so-called microscope, we can use the principle of optics to make a telescope. In turn, you can use the principle of optics to see small things. ”

Cheng Yi immediately smiled: "Young Master Qin." I know the magnifying glass, it's very interesting, not only can you magnify things under the mirror, but the most interesting thing is to use it to focus, to gather sunlight in one point and actually make a fire, I know this. It's just this microscopic?"

"A magnifying glass doesn't magnify much. Qin Min's eyes were weird, "What's the use of one or two times the magnification, that thing is just for fun, do you know how many times the microscope magnification?"

"How many times?"

"100 times!" Qin Min said proudly.

Hundred?

Cheng Yi gasped, and then realized what this meant. Lian said excitedly: "This is not to say that we can observe ......" Human beings have limited vision with the naked eye, even if they reach their level of innate masters, although their eyesight is much better than that of ordinary people, it is far from enough to understand the microscopic world, and therefore, the microscopic world seen under the microscope in later generations is completely unimaginable for people in this era.

Now there is a microscope that can magnify a hundred times, which means that it can see whether there is something in the subtleties, what the matter is like, how it works, Cheng Yi is a smart person, how can he not be excited.

"It's the ability to see a lot of things in the microcosm that we weren't aware of before. Qin Chao said in a deep voice, "However, 100 times is not enough, far from enough!"

100x is not enough?

Cheng Yi and Cheng Ming looked at the Qin Dynasty strangely.

"Qin Gongzi, it's already good to have 100 times!" Cheng Ming said with a smile.

"That's good, but the higher the magnification of the microscopic world, the better, and I'm just here to discuss how to quickly make a microscope that can magnify a thousand times. Qin Chao said.

1000 times?

Cheng Yi blinked, and then laughed: "Gongzi Qin has always had a big appetite, and it would naturally be good if he could do it a thousand times, but I'm afraid this matter will not be easy." ”

"The main thing is the grinding of lenses, this thing is a water grinding work, manpower is always not slack, especially time, it is too time-consuming, so we must find a better way. Qin Chao sighed, and then smiled, "I sometimes throw these troubles to them to think about......" Pointing at Qin Min, Qin Ya and others.

"I have to throw it to my men. Cheng Yi nodded, looking at the microscope with shining eyes, "Qin Gongzi, can I?"

"Naturally. Qin Chaolian introduced how to use the microscope.

……

The road outside Yichuan Mansion was dusty, and Cheng Yi in the carriage closed his eyes slightly, and the images he saw that night were still in his mind.

"The birth of optics, I was still negligent. ”

That night, after figuring out how to use the microscope, Cheng Yi had a lot of fun, slices of leaves, the inside of water droplets, the limbs of insects, human skin, hair, and even Cheng Yi picked his fingers, got a drop of his own blood and put it in the utensils to watch, and even saw the components of his own blood, such as the thing called 'red blood cells' by Qin Xianao.

"Master, I'm home!"

The curtain of the car was lifted, Cheng Yi stepped out of the carriage, looked at the Yichuan Mansion in front of him, and had a feeling of being reincarnated.

"It's home!"

Cheng Yi was about to start, when he suddenly looked in one direction.

"Sure enough, the teacher is back. Yang Shi and Luo Congyan shouted from afar, and soon the two of them arrived in front of Cheng Yi, "The teacher is still healthy!" "Hello ancestor!"

"Zhongli, you came with Zhong Su, could it be that there is something wrong?"

"Teacher, do you still remember Qin Xianao's divine book?" Yang Shilian said, "Didn't the teacher tell him at that time, do you get the divine book familiar according to Qin Xianao's requirements, now that Zhong Su has reached the standard, he can make the content of this divine book when he sleeps." ”

Cheng Yi raised his eyebrows and looked at Luo Congyan approvingly: "Very good, I can get it familiar so quickly, it seems that Zhong Su is ruthless, so good, now the situation is pressing, we will not be ruthless, and we will not have the face to see our ancestors when we die in the future, Zhong Su, since you have completed the task, you will do whatever you need to do in the future." ”

"Yes, Patriarch. Luo Congyan said respectfully, "I came this time to pick the longevity fruit to try." ”

"This is a must, whether Qin Xianao's divine book is useful or not, we have to try it, and Qin Xianao has a bold spirit, it is not a very important matter, he has always been very generous, even if this divine book throws a fake, it will not be bad. Cheng Yi said with a smile.

Yang Shi suddenly smiled: "It seems that this time Qin Xianao invited the teacher to go, the etiquette specifications must be extremely high, otherwise it will be ......."

"Okay, you're neutral, you actually made a joke with the teacher, but this time the Lingnan trip ......" Cheng Yi's voice was a little emotional, "It's a long experience." ”

"Long insight?"

Yang Shi and Luo Congyan raised their eyebrows slightly.

Cheng Yi looked at Luo Congyan: "Zhong Su, where are you going to start picking fruits?"

"Ancestor, I'm here for this, didn't you write 'everything has quality' last time?" Luo Congyan said, "I want to try that one first." ”

Cheng Yi's eyes lit up suddenly, doing 'cheap learning', studying things like 'atmospheric pressure' and 'pressure' is different from doing other studies, it is another feeling of excitement.

Although the score of 'cheap learning' fruit picking is generally pitiful.

But Cheng Yi really wanted to see how many points he could score for the 'quality of everything' that he had studied with his heart this time.

"Ancestor, after all, this 'everything has quality' ......" Luo Congyan said in a low voice, "I'm afraid of your ......"

"Although the martial arts world has always said that it is not good to pick fruits from 'cheap learning', but at this time, at that time, it is the short board that decides to fill the water, not the long board, and the score is low, and it has to be picked, which is also for the better development of orthodox doctrine in the future. Cheng Yi looked at Luo Congyan with great appreciation, "Zhong Su, can you think of starting from cheap learning, this is very good, the rise of cheap learning, you don't take the lead as a senior brother, who will take it?"

"Moreover, it is only relatively easy to pick fruits from cheap learning, and it is better to use him to test the effect of the divine book. Cheng Yi had excitement in his eyes, "Three years, if you can't pick it up for three years, give up immediately, is it enough?"

"Three years of cheap study is enough, patriarch, then I will ......"

"When you come to my house, go into the house and sit down, I have some good things here, you can help you get into the house." Cheng Yi pointed to a carriage behind him.

"Good stuff. ”

Yang Shi and Luo Congyan's eyes lit up, they had already noticed that this time Cheng Yi came back, not a carriage, but three, naturally curious, what the other two were used for.

Yang Shi and Luo Congyan came to the second carriage, lifted the curtain, and their eyes suddenly widened.

"These are telescopes, fifteen in all. Cheng Yi said proudly.

"Fifteen telescopes, this ......" Yang Shi was stunned and looked at Cheng Yi strangely, "Where did the teacher get so many crystals, why didn't I hear the wind at all." ”

"Haha!" Cheng Yilang laughed, "You are wrong, these are all sent by Qin Xianao, oh, it can't be said that they were sent, the old man asked for it with a shy face, anyway, it is a defective product for him." ”

"Qin Xianao's defective product?"

Yang Shi and Luo Congyan looked weird, defective products, and Cheng Yi came all the way back to get them?

"This one, the old man is going to give it to Sima Junshi, this one to Shao Bowen, Zhong Su, you go back to Lizheng Academy and bring him over, by the way, give it to Shao Bowen, and this one will be given to Uncle Hui......"

Looking at Cheng Yi triumphantly, pointing to the 'defective product' in his mouth and saying who this one is for, and who is that one for, the corners of Yang Shi and Luo Congyan's mouths twitched.

Yang Shi and Luo Congyan didn't stay long at Cheng Yi's house before leaving. (To be continued.) )