These days, Xu Yi is telling some unheard of theories, and the periodic table of elements makes everyone dizzy, and now when I hear Xu Yi say that he wants to show his hand, everyone is in good spirits.

Cheng Chao said: "Boy, I have wanted to remind you for a long time, I have bet for so long, and I haven't seen you show your real skills." A few days ago, I saw that you were busy, so I let you go, okay, let's see what microscope you have today!"

Following Xu Yi to the study in his backyard, Xu Yi ordered everyone to wait outside, and not long after, Xu Yi took out an ancient monster from the study.

This thing is more than a foot high, copper curved arm, set of bronze round pipe, the round pipe is upright, below is a copper tray, there is a round small copper wheel and round pipe fixed on the curved arm, the structure is exquisite and very peculiar.

Xu Yi put the thing on the stone table in the backyard, everyone was very curious, and when they stepped forward to see it, the bronze round pipe was actually divided into several pieces and set together, but they saw that there was a layer of transparent things on it, as if it was as translucent as ice crystals.

Li Xiang and Cheng Chao's eyes widened, and Li Xiang thought secretly: "This bastard has been making up some ancient monsters all day long, and I don't know what this thing is for." Cheng Chao thought: "This thing looks like a doorway, the things on the round tube are like ice and not ice, and they are extremely transparent, even more transparent than crystal." ”

Luo Ming thought that after he was happy with himself every day, he didn't sleep, and he tinkered in the study for a few days, and every time he went to ask him to sleep, he said wait, until the second half of the night, he would sleep for an hour or two, which made him very distressed. It turned out that he worked so hard these days, so he made this thing, and he didn't know what the use was, it was worth such hard work.

"This is the microscope, and this lens is made of glass, which is formed by melting silica and other chemicals, and the main raw materials are soda ash, limestone, quartz. Both of the silica substances are in the periodic table that I asked you to memorize, and now you know what the periodic table is for. Xu Yi said triumphantly.

Huan Yi and Chang Ling and other Dongfu spirits were thoughtful, their Dongfu spirits were all people with a skill among the spirits, and most of the people who came to Xu Yi's house this time were smart and smart, well-read and memorized. Before, some people didn't understand Xu Yi asking them to recite what kind of broken watch, there were some things in it they knew, such as copper, iron, gold, etc., but they didn't understand how the ranking came about. Now it seems that he understands Xu Yi's intentions, he wants them to understand that the things he creates are all combined from the substances in the periodic table, which seems to be mysterious, but in fact there are traces to follow.

"Without further ado, let's demonstrate it and see it. Cheng Chao urged.

Xu Yi took out a small box from under the microscope, there was a small glass tube in the small box, one side of the tube was covered with a piece of cowhide, but the other end was hollow, and there were two small pieces of transparent glass, and then Xu Yi looked at Cheng Cheng and said: "You go to the stream when you get old, you don't need much." ”

Cheng Chao took a glass of stream water, Xu Yi sucked some water with the glass tube, then dripped onto the glass, and then pressed it with another piece of glass, and put it under the microscope. After following the adjustment for a few times, Xu Yi clapped his hands and said, "Okay, now you can take a look at the world in this drop of water." ”

Cheng Chao was the first to go up to look, he squinted one eye, and the other eye came up to take a look, and he was stunned. Xu Yi grabbed his hand and said, "You can move this piece of glass left and right, and you can see more microorganisms." ”

Cheng Cheng looked at it for a moment before getting up, and then Li Xiang, who had already been unable to resist her curiosity, went up to watch. Everyone hurriedly asked Cheng Chao, "What did Cheng Lao see?"

Cheng Chao muttered: "Thousands of little insects, all kinds of them, they can still move!"

Xu Yi touched his nose and smiled: "Those are microorganisms, bacteria, etc., the microscope can be made better, the larger the magnification, the more things you can see, and you can also see viruses or something." ”

Cheng Chao stopped talking, took out a spirit pill from his pocket and handed it over: "This is the Earth Spirit Pill, it can restore the soul and continue life, as long as there is still a breath, after using it, it can save people, but it is extremely difficult to refine, and I have only refined one for so many years." ”

Xu Yi was overjoyed and took over the Earth Spirit Pill, this is a chance for his life. Then I was a little puzzled, this old man had only refined one for so many years, how did he know the effect of this medicine?

The half-believing subordinates looked back and saw that Li Xiang also stood up with a sluggish face, walked in front of him and said, "What are the bugs in the water we drink?" Thinking of drinking so much water every day, and there are so many bugs in the water, Li Xiang felt uncomfortable, she hated Xu Yi a little why he invented this thing, and let herself see such a disgusting scene.

"Don't worry, if the water is boiled, all the worms in it will be killed, and all you will drink will be a corpse, and it will not swim in your stomach. Xu Yi said with a grin.

Li Xiang's little face was very sad, even if it was a corpse of a bug, it was disgusting. Luo Ming saw that Xu Yi was still teasing her, so she glared at Xu Yi, hugged Li Xiang and said, "Good girl, don't listen to his nonsense, we have drunk water for so many years, aren't they all like this?"

Xu Yi laughed, took out two more things and said, "I still have two things, one is called a telescope and the other is a magnifying glass." He handed the magnifying glass to Cheng Chao and said, "You are old, your eyes are dizzy, and you don't bother to read books with things." ”

Cheng Chao took the magnifying glass, and sure enough, at a glance, it was clear, and a lot of things were magnified, and Cheng Chao collected it like a treasure.

Xu Yi handed the copper monocular to Li Xiang and said, "Don't be sad, in fact, there are these invisible little insects in the air we breathe, even if you know, what can you do? They are always everywhere, just let them go." This telescope allows you to see far away. ”

Li Xiang was overjoyed, took it and took a look, sure enough, even the carvings on the Baiyang Pagoda in the distance could be seen clearly, and under the great joy, he jumped up and down with a telescope to look around.

Luo Ming frowned secretly when she heard this, came over and pinched the tender meat on Xu Yi's waist, and said coldly: "In the past few days, I saw you peeking at Li Xiang's room opposite with this thing in the study, to be honest, what are you looking at?"

Xu Yi bared his teeth, a few nights, he heard the sound of water in Li Xiang's room, and knew that he was taking a bath, so he tried it with a telescope a few times, but he didn't see anything with the windows closed.

"Daughter-in-law, let it go, I didn't look at anything, I just made a telescope and tried it. Xu Yi begged for mercy.

Luo Ming snorted, and then suddenly blushed and whispered, "If you want to see it, I'll show you it at night." Xu Yi hurriedly said yes with a wicked smile on his face.

On the other side, Huan Yi, Chang Ling and other Dongfu spirits took turns to look at the world under the microscope, and after reading it, they were all dumbfounded.

Xu Yi stepped forward and said, "Many of these small insects you see are germs, and if there are too many of them after entering the human body, they will make people sick." And with this thing in hand, we can find a cure for why these bugs make us sick. I even wanted to take some flesh from the corpse of the Sand Demon so that I could use this microscope to see what was so special about the Sand Devil's body so that we could find a way to defeat them. This is the meaning of what we do and learn in the Terran Academy of Sciences, and my skills are not limited to this, but I only have eleven months to impart knowledge to you, whether you want to continue to learn from me, or do you want to quit, listen to you. ”

Huan Yi and Chang Ling glanced at each other, the cold color on Chang Ling's face faded slightly, and he knelt down respectfully, and then kowtowed: "Master is above, please accept the apprentice's worship." Following Huan Yi also knelt down and kowtowed, all the eighteen spirits in Dongfu knelt down and kowtowed in front of Xu Yi, calling him a master, but it made Xu Yi a little confused.

Cheng Chao laughed and said: "Don't panic, boy, they still want this apprenticeship, after all, you teach them skills, and you are their master." ”

Xu Yi was right when he thought about it, he would be their master in the future, what he said, the students should do, and it would be easy to manage, saving a lot of trouble. Then seeing Chang Ling's slender body kneeling on the ground, Xu Yi couldn't help but swallow his saliva and secretly thought: "It's not bad to play a teacher-student relationship, why don't you dive into this cold Chang Ling first?"

After a demonstration, the Donghai County Terran Academy of Sciences was officially established, and Xu Yi became the dean and only teacher, with eighteen disciples, plus five auditors: Cheng Chao, Li Xiang, Luo Ming, Yin Xian, and Jiao Zha. At the beginning of the academy's creation, it was indeed a little shabby, but this is where the hope of the civilization of the human race lies in the future.

Passing on the scientific knowledge of his earth to the people of the other world like this, Xu Yi does not regret doing so, he is now a member of the human race, and when the human race is strong, he can live a good life and improve his status. Maybe in the future, he will become a sage worshipped by the human race, just like Cangjie, who invented writing in ancient times, and the Yellow Emperor, who created the calendar, and it is not necessary to be praised by the world.

After finishing the Academy of Sciences, in the first class, Xu Yi talked about the production principle of lenses and the optical principles of imaging, so that everyone could digest them by themselves. He took Yin Xian and Jiao Za to summon dozens of servants borrowed from the county guard's mansion, escorted a batch of grain, pigs, cattle and sheep back to the death row camp.

The grain, pigs, cattle and sheep were purchased by Xu Yi from the city with his own bounty, and he spent 2,000 yuan in exchange for 500 stone of grain, ten pigs, cattle and sheep each, the purchasing power of these bounties is still okay, and the purchased grain is enough for more than 800 people to eat for a while. In the future, Xu Yi will not raise these people in vain, in addition to training them, Xu Yi also intends to use their labor to create value to support themselves.

Back at the death row camp, when the condemned prisoners saw so much food, pigs, cattle and sheep, their eyes suddenly lit up. I eat some coarse grains and wild vegetables mixed with sand every day, and I don't know how many times I haven't eaten meat, so I gather around for a while.

Xu Yi stood on the grain cart, looked at everyone and shouted: "Okay, everyone has also seen these grains and meat, if you want to eat them, tell me first, let you elect the thousand-commander, centurion, and ten-commander, have you all selected them?"