“…… There is no difference between the lightning in nature and the electricity we send out with electromagnetic induction today, but the voltage we send is very small, and there is no harm to the human body, but the lightning in a thunderstorm can turn human electricity into coke, so when thundering, you had better not stand under a tree, or carry metal items such as swords, and do not fly kites or ride hot air balloons in thunderstorms, otherwise you will bear the consequences! ”

After Li Xiu finished saying the above paragraph, he said again while packing up his textbook: "Okay, let's talk about electricity today, let's talk about artificial power generation in the next class, and the possible application of electricity in the future, and a few people in the front row will help out and move this simple generator to the library, and get out of class!" ”

With Li Xiu's "end of class", this course related to electricity has finally ended, but many students are still immersed in Li Xiu's previous talk, especially the unprecedented field of electricity, as if it opened an unprecedented door for them, and the generator is even more magical, although the current emitted cannot be seen, but it can make people feel that every student who has experienced it in person is trembling by electricity, just like the legendary spell.

After packing up the textbooks, he commanded several students to help move the generator to the library of the academy, which he made in order to teach the children at home, and now he simply gave it to the academy, and it was placed in the library, and the students could also operate it themselves in order to experience the magic of electricity.

The generator was placed in a separate room in the library, after all, the library requires quiet, but if someone wants to try the generator, I'm afraid it will be difficult to keep it quiet, but as soon as this simple generator was placed, I saw Xiao Yu walking quickly and said, "Donkey, can I try this thing?" ”

"Xiao Gong, haven't you already seen the reaction of others after being electrocuted just now, why do you have to try it yourself?" Li Xiu said with a wry smile when he heard Xiao Yu's request.

Although Xiao Yu is the head of the academy, as long as Li Xiu lectures, he will take the time to listen, even more seriously than the average student, in the class just now, Li Xiu let the students experience the feeling of being electrified, and Xiao Yu is also eager to try, but Li Xiu is worried that he is old, and he is the head of the academy, if he is really electrocuted in front of the students, his whole body trembles, it will also affect his image, so just now Li Xiu ordered a few young students to come to the stage, but deliberately ignored Xiao Yu, I didn't expect him to run over again.

"That's different, others are others, you are yourself, you talk about electricity is so wonderful, if you don't experience it yourself, how can you have a deeper understanding?" Xiao Yu said with a firm expression, it seems that he is determined to try what it feels like to be electrocuted?

Seeing Xiao Yu's attitude so resolute, Li Xiu had no choice, so he had to nod and agree, and then let the other party hold the wire of the current output, and he turned the generator himself, but considering Xiao Yu's age, Li Xiu also deliberately slowed down, but even so, Xiao Yu could feel the numbness in his palms and even his arms, if the current was a little stronger, I am afraid he would have to tremble all over his body like those students.

"It's amazing, this small device can emit electricity that makes people unable to control their bodies, I really don't know what kind of power the thunder and lightning in the sky are?" After Xiao Yu experienced the feeling of being electrocuted, she couldn't help but be very emotional.

"Everything in the world has its own reason, so I named this discipline physics, only by understanding the operation of these things, can we more accurately understand the world we live in." Li Xiu also smiled at this time, and he was also very happy to let a Confucian scholar like Xiao Yu experience the wonder of physics, and even affect his thoughts about these.

"The truth of all things, isn't that the way of Lao Tzu, the so-called three thousand avenues, different paths and the same end, if this physics is studied to the extreme, maybe it can also reach the realm of Lao Tzu!" Xiao Yu also nodded in agreement when he heard Li Xiu's words.

Although he is old, he still maintains a heart to learn, so during this time, as long as Li Xiu lectures, he will run to listen to the lectures, and the more he learns, the more he feels the extraordinary learning that Li Xiu preached, although these studies are different from Confucianism, but they are more detailed and practical.

Li Xiu heard Xiao Yu compare physics with Lao Tzu's Tao, and he laughed at the moment, without admitting or denying it, physics is science, Lao Tzu's Tao is metaphysics, but even in later generations, the interpretation of the world is full of uncertainty, whether it is science or metaphysics, it seems that it cannot explain the world, of course, the science of later generations has not yet reached the extreme, maybe human beings will develop for tens of thousands of years to figure out the essence of this world.

"By the way, does the horse know that the Persian envoy has come to the Tang Dynasty again?" But at this moment, I suddenly heard Xiao Yu speak again, and also shifted the topic to an aspect that Li Xiu couldn't react to.

"This ...... I've heard about it, after all, I'm familiar with the Persians, but this time the Persian envoys seem to have changed. Li Xiu was stunned for a moment before he reacted.

Just a few days ago, the Persian envoy arrived in the Tang Dynasty again, but this time the envoy was no longer Bahra, it is said that Bahra could not send an envoy for something, so he changed a Persian minister, I heard that he was very old, and Li Xiu had not seen it, so he didn't know much about this Persian envoy.

However, although Li Xiu had not seen this Persian envoy, he had also heard some things, originally according to the original history, the capital of Persia should have been broken by the Great Cannibals two years ago, and a country without a capital, even if the king was still alive, it could almost be said that the country was destroyed.

It's just that under the influence of the Tang Dynasty, Persia formed an alliance with the Roman Empire, and when the Great Food attacked Persia, Rome attacked the Great Cannibal army from behind, which led to the defeat of the Great Food Army in Persia, and Persia also took advantage of this opportunity to recover a lot of land in one fell swoop, but the Great Cannibal was not willing to fail, and after recuperating for a period of time, it turned out to be one enemy and two, and did not fall behind at all, which made Rome also shocked by the strength of the Great Cannibal, and at the same time some were fortunate to form an alliance with the Persians under the persuasion of the Tang Dynasty, otherwise they would only rely on themselves, I'm afraid it's not the opponent of the Great Cannibal at all.

"Coincidentally, the day before yesterday I had something to go into the palace to meet Your Majesty, and I happened to meet a Persian envoy who also met Your Majesty, this envoy's name is Zamas, an old Persian with a white beard, it is said that he is also a famous scholar in Persia, and there are not only Persians in his mission, but also the Roman envoy, but the Romans are dying on the road, so now the mission is mainly Persian." Xiao Yu immediately told what he had learned the day before yesterday.

"There are Romans in the mission?" Li Xiu couldn't help but show a surprised expression when he heard the news, he had only heard that the Persian mission was coming, but he didn't know that the Romans were also coming with the Persians, but this is not surprising, first, the Persian mission had just arrived in Chang'an and had not seen the sky, and it was estimated that he had been waiting for Li Shimin's summons, and secondly, Li Xiu was now in addition to his home or coming to the academy, and he rarely had contact with the outside world, so the news was not particularly well-informed.

"Yes, the Book of the Later Han Dynasty called them Great Qin, and now we call them Rome, and I remember that this title was first called from the horse, but whether it is Rome or Persia, I see that these Hu people look similar, red, white and white, and their hair color is different from ours, which looks quite weird." Xiao Yu couldn't help but smile when she saw Li Xiu's surprised look.

"Haha~, in the eyes of our Central Plains people, the Hu people are indeed the same, but Rome and Persia used to be feuds, and the two sides were almost immortal on the battlefield, and now they are facing the threat of cannibalism, and they have to join forces, and it was His Majesty who personally wrote a letter to the Roman Emperor to promote their alliance with Persia." Li Xiu also said with a smile at this time.

The alliance between Persia and Rome has temporarily curbed the expansion of the cannibals, which is also a good thing for the Tang Dynasty, after all, if the cannibals continue to expand, and the Tang Dynasty is also seeking to control the Western Regions, in this way, the two sides will sooner or later collide together, and the battle of Heng Rus in later generations is the first collision of the two great powers, but the national strength of the Tang Dynasty at that time declined, and it was no longer able to control Central Asia.

"I know that the horse is very familiar with the last envoy of Persia, and this time Persia has sent another envoy, and it is very likely that he will visit the horse, and as far as I know, there are many scholars in the Persian mission, such as the envoy Zamas, who is a famous scholar in Persia, so I would like to ask the horse to do me a favor, and invite the Persians to come to the academy to exchange ideas, and if possible, let them tell the students about the knowledge of Persia." Xiao Yu finally told her purpose at this time.

The atmosphere in all aspects of the Tang Dynasty is still quite open, although scholars like Xiao Yu are arrogant, but they are not particularly xenophobic in learning, at least compared to the Ming and Qing dynasties in later generations, this is also one of the reasons why Li Xiu's courses are so popular in the academy, so Xiao Yu knows that there are many scholars in the Persian and Roman missions, and he can't help but have the idea of hunting for curiosity, and wants to understand the knowledge of the people in the extreme west through exchanges.

Regarding Xiao Yu's idea, Li Xiu naturally raised his hands in agreement, but he was worried that Zamas would come to visit him? After all, the other party is not Bahra, and this time Bahra did not come, which makes Li Xiu a little strange, after all, Bahra is also more familiar with the Tang Dynasty, and it stands to reason that the Persian side should not easily change envoys, unless Bahra encounters some problems?