Li Shimin was attracted by the sound of the loudspeaker, and directly took Empress Changsun and others to the East Palace.

He also did not let Xiaohuangmen report, and Li Chengqian did not know about Li Shimin's arrival.

Instead, let's talk about it:

"Chemistry is a kind of natural science, which studies the composition, properties, structure and change laws of matter at the molecular and atomic levels; The science of creating new matter. The world is composed of matter, and chemistry is one of the main methods and means used by human beings to understand and transform the material world. It is a discipline with a long history and vitality, and its achievements are an important symbol of social civilization. ”

Li Shimin and Empress Changsun looked at each other.

"Gao Ming, what are you teaching? What is Chemistry? What are the physical changes? Strange as it sounds, none of us have ever learned anything like this before. ”

"This, maybe it's some of the knowledge he learned from ancient books!"

Empress Eldest Sun said.

"Chinese culture is vast and profound, and there are still things I don't know, which is really very profound."

They couldn't understand what Li Chengqian said, and the only thing they could understand was the pronunciation of the words in it.

"Yes, Your Majesty, Gao Ming collected a lot of strange books from the people some time ago, and the concubine can't understand those books!"

Just some time ago, Li Chengqian deliberately made a show, saying that it was a private collection of books, but in fact, it was just to make them feel that his knowledge was based on evidence, otherwise it would definitely make everyone suspect that he was not coming from the right way.

"Look at these students, there are thousands, right? They listened really attentively! ”

"Gao Ming's lectures are very popular, and some people even want to listen to his lectures and solve their doubts."

"Oh? Sure enough, it's my son! ”

"Your Majesty, look, that sound seems to have come from something strange."

Empress Eldest Sun pointed to the megaphone and said.

So the two of them took a closer look, and the closer they got, the louder the sound really became.

When they approached, they were discovered by the sharp-eyed Li Chengqian.

He had to stop lecturing and walked over to the two of them.

"My son, please see Your Majesty! Queen mother! ”

This time, everyone was shocked because of Li Shimin's appearance.

Everyone turned around and saluted Li Shimin and Empress Changsun.

"The villain waits to meet His Majesty and Her Royal Highness the Queen!"

Today's everything is probably something they will never forget.

Not only did they see the prince and the two princes, but they also saw His Majesty and the queen, and if they said this, I am afraid they would envy everyone to death.

"Huh? It's all out of courtesy! ”

Li Chengqian greeted him and said, "Your Majesty, Queen Mother, you come here, and you don't inform your sons in advance, so that your sons can be well prepared!" ”

"Your Majesty is not afraid of disturbing you, so you don't dare to speak out!"

Empress Eldest Sun said.

But Li Shimin's focus is different, he pointed to the loudspeaker and said:

"Gao Ming, what is this thing!?"

Li Chengqian hurriedly explained:

"Oh, Your Majesty, this thing is a megaphone that can amplify people's voices tenfold and hundredfold!"

"Just like your voice can reach the Tai Chi Palace?"

Only then did Li Chengqian realize that the sound insulation effect of the venue he had engaged in was a little worse, and he directly attracted Li Shimin.

But it doesn't matter if it comes.

"Yes, Your Majesty would like to try? Just talk there and you can amplify your voice! ”

Li Chengqian asked.

Li Shimin had wanted to try it for a long time, so when Li Chengqian said this, he leaned over.

Reach the microphone.

"Your Majesty try!"

"I ......"

Li Shimin's neutrality is full, this word is very loud, and it is very shocking, which makes everyone mention it.

Some almost fell to their knees.

Li Shimin looked at everyone's reactions, his expression was surprised, and then he laughed.

This laugh came out directly through the loudspeaker again.

But it frightened a lot of people.

"Good stuff!"

Li Shimin was overjoyed, and said three more words, which shocked people's eardrums and covered their ears one after another.

Li Shimin hurriedly left the vicinity of the microphone.

It's a lot quieter.

"If Your Majesty likes it, after today's class is over, this set of megaphones will be sent to the Taiji Palace for you to use!"

"Huh? How can I win people's love? ”

Li Shimin snorted. I've wanted this set for a long time. Just keep it at that.

But Li Chengqian saw through it, you guy, look at your expression, that's very fond, don't think I don't know.

But he said: "Your Majesty will take it if you like it, and your son can rebuild it!" ”

"Then you're welcome!"

If this continues, in the early dynasty in the future, the ministers are afraid that they will suffer, because Li Shimin has long wanted to use this as an early dynasty.

It can even increase the number of people in the previous dynasty several times and allow more people to participate.

The ministers of the previous dynasty may hate Li Chengqian to death.

Li Chengqian smiled.

At this time, Empress Changsun said: "Your Majesty, I have also seen this thing, I think Gao Ming still has to teach, why don't we go to the side to rest first?" We'll talk when he's done. ”

"Okay, come on! I listened to it. ”

"Yes! Your Majesty! ”

Li Shimin and the two went to the side, while Li Chengqian continued to lecture.

All of a sudden, the whole class was back to normal.

Li Shimin and others did not understand their lectures at all, because their teaching ability was not open to them.

Therefore, it didn't take long for them to get bored and leave the East Palace early.

As for the lecture hall in the East Palace, Li Chengqian took the trouble to keep talking.

After deducting the time for eating, drinking, and resting, he spoke for more than ten hours before stopping.

By the time he finished the last word, it was already early in the morning of the next day.

However, everyone was sleepy, and when Li Chengqian stopped, people still looked unsatisfied.

"Okay, that's all for today, ten days later, this king will have a lesson!"

As soon as Li Chengqian's words came out, everyone cheered.

You can take so much information at once, and the next lesson will be ten days later.

Ten days later, it's great to be able to listen to it again.

"After I go back today, tomorrow Li Ke, Li Tai, and Lai Ji will be in charge of organizing the research, this king has a project, and someone will send it to you later."

That's right, since you've already taught you, the next step is to start studying the steam engine, and if five thousand people study it at the same time, the speed is simply amazing. Of course, not everyone will be involved, and some people will have additional research topics, such as the improvement of trains, Zhenguan cannons, the improvement of guns, and so on.

This time it was regarded as a military training to lay the foundation for future scientific and technological discoveries, and Datang became even more powerful because of it.