On the top of the mountain, the chubby old man looked at the peaks of Qingdai in the distance.

"Gaitian said that the evolution of heaven and earth is described, and I Hun Tian said that the biggest weakness is ......" Cheng Yi suddenly looked down the mountain. "It's a success, teacher, what Liu Qinwen said is really successful!" A figure jumped between the mountain walls like an ape, and came to the top of the mountain in an instant.

"Success?"

Cheng Yi looked at You Xing's hand, which was a barrel more than a foot long and looked like it was made of cedar wood.

"Do you still remember the clairvoyant mirror that Liu Qin talked about in the preface to "The Theory of the Movement of Heavenly Bodies"? Later, the teacher wrote to her to ask her about the reason. ”

Cheng Yi's eyes lit up, he did write to ask Liu Qin about the specific production method of the clairvoyant mirror, and Liu Qin was also very simple, and directly told Cheng Yi the method.

"Quick, bring it to the old man to see. Cheng Yilian shouted.

"This is just a simple version, doing experiments, not up to a thousand miles, na, from this side it is magnified, and this side is zoomed out. You Xinglian offered it with both hands. Cheng Yi grabbed the 'telescope' and couldn't wait to put it in front of his right eye, looking at the mountain peak in the distance that had not been able to see the specific appearance clearly.

Abruptly.

The top of the huge bluestone mountain appeared in Cheng Yi's right eye.

"This ......" Cheng Yilian looked to the side again, and the canopy that he couldn't see clearly also appeared in his eyes.

"Good things, good things!! Cheng Yi said with a smile, he looked at several places in a row, "It is true that it can magnify things in the distance, but the strange thing is that the near ones can't see clearly, and they are blurry at a certain distance, which is really ......"

"The teacher forgot what Liu Qin said about the focal length, you can't see clearly in the focal length, and you have to adjust the focal length to see clearly. You Xing said with a smile.

Cheng Yi nodded: "There is this reason, Qin Xianao uses this to talk about the principle of optics." Even the human eye imaging is that there is a magnifying glass-like thing in the eye called a lens, and Qin Xianao's optical theories do not seem to be wrong from this telescope. ”

"For the time being, it's not entirely certain, but that doesn't prevent us from using his optical principles to make it more accurate and able to observe the moon a thousand times faster. 10,000-fold telescope. You Xing said excitedly.

"With a thousand-fold telescope, this celestial phenomenon ......" Cheng Yi's eyes also showed excitement, although Confucianism despises cheap learning such as strange and obscene skills, but cheap learning is really indispensable in life, and it is impossible for him Cheng Yi to give up food because of choking.

"When the time comes, we can better improve our 'armillary theory' theory. You Xing's eyes flashed with determination, and then he took the telescope handed by Cheng Yi and went down the mountain with a puff of smoke.

Luo learns to make telescopes, and one school after another is also studying the production of telescopes, and the principle of telescopes is not complicated. In addition, Liu Qin has given a brief explanation in the text, so as long as smart people study carefully, they can always understand the principle of production, so one school after another quickly understood the production method, and then, like Luo Xue, made a simple telescope and began the development of higher-level telescopes.

One by one, they were also extremely excited.

"At the beginning of heaven and earth, the formation of yin and yang two qi. Divide rigidity and softness, and one is clear. One is heavy, according to the yin and yang two qi, it should be Gaitian said that it is correct, but Gaitian said that it cannot explain too many phenomena. ”

"Although the armillary theory is in line with the current reality, there is no strong evidence for evolution, so far. There is some truth in Shao Yong's theory of the 'movement' of the Baiyuan School. ”

Astronomy has always been the core content that all schools attach great importance to, and it is also the most controversial, the longest and the most contested among countless scholars in all dynasties, because this controversy has produced many very excellent almanacs. As a result of this controversy, many measurements were made, and as a result of this controversy developed many classical knowledge in arithmetic, such as the Pythagorean law.

Because of this controversy, countless scholars have been observing it for many years, leaving behind a lot of very valuable data.

The most controversial content in the past thousand years may now have a different turn because of the clairvoyant mirror, or even the thousand-mile mirror, and the hundreds of thousands of miles mirror, all of them are naturally extremely excited, and they all want to grab the first piece of meat in this carnival feast.

In the cafeteria of Yuelu Academy, members of the Tai Chi class walked to their seats with food.

"Brother-in-law, you are dressed like this, it is really powerful. Qin Ning chuckled and looked at the old man in front of him dressed in white, with a scruffy beard and a lewd face, and his triangular eyes glanced around at the girl's figure.

"Dead girl, you didn't make me dress up like this. Qin Chao was speechless, his eyes fell on a woman queuing up to cook on the east side of the cafeteria, "It's not like it, but why do I always feel ......?"

The east side of the rice window.

"Bing'er, that lewd old man seems to be looking at you again. ”

"I know!" Qin Bing frowned slightly, "Leave him alone, anyway, he just looks, there are rules here, we can't trouble him." ”

"Hmph, if it weren't for the Tai Chi class, you wouldn't be allowed to cause trouble...... "The woman in red next to Qin Bing snorted, and then an excited smile appeared on her face, "Bing'er, did you say that old man has taken a fancy to you." ”

"I don't think so, when I passed by, I listened to what the old man said was like it, but it didn't look like it. Another girl in white said softly, "I think Sister Bing'er must be very similar to his relatives and friends, or his wife, that's why it's like this, alas, this old man actually entered this Tai Chi class, I really don't know how to get in." ”

"Yes, the masters of the training have said that this kind of memory training is best under the age of twenty, and there is no hope when you are forty years old, and the younger you are, the better the effect, the old man, at least fifty or sixty years old, still comes here to ......"

At the same time-

"That obscene old man, I heard that the fairy who came to tease Cihang Jingzhai last time made the fairy master so angry that he almost went berserk. Many people in the cafeteria also looked at the Qin Dynasty strangely, it was not that there were no older people who came to this Tai Chi class, but he was the only one who was so obscene, and he was obscene, but he was wearing the delicate white clothes that only young boys and brothers wrew, and a pair of triangular eyes turned around beautiful women from time to time, which made people disgusting.

But although this man is disgusting, he is extremely capable.

Others come to train every day, but this old man doesn't know what to do with it, he comes to the training class for a day, and every time he goes to class, his memory and learning performance are stronger than anyone else's, no matter how strong he is, he just has a picture of Lao Tzu's **** in the world, which makes people angry.

Therefore, not to mention the young people, even the older ones in the class are far away from this obscene old man one by one, for fear of ruining their reputation.

However, although this old man is not liked in the Tai Chi class, people often come to him outside, like this girl today, she is very bright.

"Well, this old man is quite smart, when the Xianzhai Lord was about to go crazy, the rabbit also ran away, at that time you didn't see the speed at which he escaped, the appearance of the ass urine, such an old man can actually enter the Tai Chi class, what do you guess his identity is?"

"What is his identity?" Qin Bing's gaze secretly fell on Qin Chao from time to time.

"Why, why do I always feel very familiar? And the woman beside him, although she doesn't know her face, but her temperament, she always feels very familiar, that's the temperament of Erlang's broken door knife, right?" Qin Bing took a small bite of food, and then the girl in white beside him shouted: "Sister Bing'er, look, that obscene old man is coming to us." ”

"Maybe I'm talking to Bing'er. The girl in red said.

Qin Binglian looked in the direction of the Qin Dynasty, only to see that the old man in white was smiling so that the wrinkles on his face turned into flowers, and a pair of triangular eyes flashed from time to time, as if everyone wanted to see through it.

Qin Bing was a little panicked for some reason.

"She is a descendant of the Tiannu Sect, called Shi Yanbing?" Qin Chao thought about the information from the investigation, and there was no such person as 'Shi Yanbing' in the later "History of Jianghu".

"I hope she's not that person!" Qin Chao's smile faded away, and the wrinkles on his face were much lighter, and at this moment, his somewhat rickety figure seemed to be a little erect.

"This temperament?"

Qin Bing's heart jumped.

The Qin Dynasty walked step by step, and with each step, his body shape and temperament changed, and gradually, although his back was still rickety, there was a delicate and natural vigorous spirit.

"This is ......" Qin Bing jumped violently, his pupils became dilated in an instant, and he stared at the white-clothed figure who came over.

At this moment, Qin Chao's figure gradually shrank back again, and in a blink of an eye, he returned to his previous obscene appearance.

"That old man, just now, did you notice it, it seems to be a little different!"

"Well, it's a little weird, it seems to have become better looking at that moment, it's really weird......" The girls around whispered, Qin Bing suddenly lowered his head, and the white-clothed figure no longer came.

Gradually, the Qin Dynasty came to the girls, and then he straightened his back and smiled.

"A few junior sisters, my son Qin is begging. "Qin Chao didn't know when there was an extra folding fan in his hand, and at this time, he opened it and shook it like a personable son.

All the girls had strange looks on their faces.

The movements and smiles of the old man in white, if a handsome boy comes, he is indeed personable, and the jade tree is in the wind, but now it is awkward, ugly, and funny.

"Senior brother old man!" the girl in red chuckled, "Do you want to get to know us, or do you want to get to know her?"

Qin Chao smiled even more, and raised his head slightly: "Several girls are as beautiful as flowers, graceful and graceful, especially these two ......" Qin Chao pointed to the girl in red and the girl in white, and praised it vigorously, "It is even more beautiful, and Xiaosheng admires it, so he took the liberty to disturb and asked the two girls for their surnames?"

The two girls giggled even more happily, and the girl in red pointed at Qin Bing: "Old man, don't you just want to be strong with our sister Bing'er, don't pretend, we can see it." The girl in white also smiled: "I obviously want to be strong Sister Bing'er, but I was born to praise us, do you want to chase our Sister Bing'er, so you use this 'suppression' method to attract the attention of our Sister Bing'er?"

"You two, don't talk nonsense. Qin Bing whispered, lowered his head and ate indifferently, without even glancing at Qin Chao. (To be continued.) )