Seeing that the sun was noon, Li Kuan arranged for everyone to go to the canteen of Guanshishan Academy to have a meal.

Most of these people have never been to the cafeteria for dinner, and they have come together for fun with great enthusiasm.

"Your Majesty, Your Highness, the King of Chu, is worthy of being the God of Wealth in the Tang Dynasty. I heard that I just sold microscopes and had an investment of more than 20,000 yuan. Although compared with the clock earning more than 200,000 yuan per day, 20,000 yuan seems to be nothing, but I still admire it."

Changsun Wuji sat next to Li Shimin, talking there as if he was praising him.

Fang Xuanling was holding a piece of braised pork and put it in his mouth. After hearing Changsun Wuji's words, he couldn't help but look at him more.

In fact, he was a little confused. Logically speaking, the Changsun family and the Chu Prince's Mansion did not have any deep hatred. Why has the relationship between the two families not improved significantly?

It seems that whenever there is a chance, Changsun Wuji will think about suppressing Li Kuan.

This wise Changsun Wuji in Fang Xuanling's understanding is a bit inconsistent.

"I heard that the lenses of the microscope require a seventh-level work like Chen Dali to grind it. It is very difficult and the output is very low, so it is inevitable that the price is more expensive."

On one hand is his brother-in-law, on the other hand is his son.

Li Shimin is naturally on Li Kuan's side.

"That's right, but His Highness the King of Chu's ability to turn stones into gold is indeed admirable. The same piece of glass becomes priceless after he has processed it. If the Ministry of Revenue is short of money one day and he is asked to be the Minister of Revenue, His Majesty will probably not have to worry about having no money."

Changsun Wuji felt Li Shimin's favor for Li Kuan, and he felt a little more worried, but he still smiled and joked.

"Kuan'er, come and sit down and have dinner together."

Li Shimin raised his head and found that Li Kuan seemed to have just finished his work.

He knew that there was another special experiment for everyone to watch after dinner. It was probably Li Kuan was just arranging the experiment.

It is rare to see Li Kuan busy, and Li Shimin is quite pleased.

However, this expression was seen by Li Chengqian and Li Tai beside him, but it was very delicious.

"Your Majesty, how is the chef skill of Guan Shishan Academy? It is still in line with everyone's taste?"

Li Kuan was not polite either and found someone near Li Shimin to sit down.

"As long as you talk about food, who can be more proficient than you? I heard that the chefs of Guanshishan Academy were trained by the chefs in your palace."

Although Li Shimin had eaten too many delicacies, he still found it interesting to try the daily meals of the students of Guanshishan Academy occasionally.

This is just like when people in later generations ate too much chicken, duck, fish and meat, they began to like to eat wild vegetables that only poor people had eaten in their early years.

Change the taste from time to time, making it more fresh.

"Second brother, my father and so many ministers are here today. If there is nothing special about your experiment, why not let everyone go after dinner, so as not to waste so much time."

Li Tai felt that Li Kuan had eaten up all the popularity today, and he didn't feel very happy.

Besides, this was when he was most favored by Li Shimin. There were not many ministers in the court who could give him a high look.

"Your Majesty, if the microscope and microorganisms in the morning make everyone realize that there are many things we cannot see in the world we live in, then the experiment in the afternoon is to prove to everyone that the space we live in is full of air. This air is under very huge pressure, and the pressure is far beyond everyone's imagination. For example, each of us is actually under pressure from more than dozens of horses every moment."

"Puchi!"

Before Li Kuan finished speaking, Changsun Chong, who was beside him, couldn't help laughing.

I sprayed out a mouthful of soup that I hadn't swallowed yet.

"Your Highness, you are telling a joke? Everyone is under the pressure of dozens of horses every moment. Wouldn't that become a meat pie long ago? Who in this world can still live?"

Although Changsun Chong's behavior was rather rude, it was about everyone's heart.

If microorganisms are already an incredible thing, then the current air pressure is even more exaggerated.

Dozens of horses!

How heavy it would be.

"Kuan'er, let's not talk about what the air is like. Even if it does exist, it should be light and fluttering. Where does it come from such a lot of pressure?"

Li Shimin also asked in confusion.

However, Li Kuan did not defend himself.

If this kind of thing is useful by just speaking with your mouth, the experiment of pulling bronze balls in history would not be so famous.

Li Kuan smiled and said, "Your Majesty, will the air be stressed? You will know after watching the experiment in the afternoon. No matter how much I explain it now, everyone must not believe it. After all, it is unreasonable to say it."

"When the journal Science at Guanshishan Academy first published articles related to microbiology, few people in Chang'an City believed that this was true. Now His Highness the King of Chu said that the atmosphere is under tremendous pressure. Although I cannot understand it, I am interested in the experiment arranged by His Highness the King of Chu. I am very curious about how this experiment made us believe that this air really has such great pressure."

Fang Xuanling, who was beside him, said something.

Obviously, he supported Li Kuan from beginning to end.

Of course, this is also because in his opinion, Li Kuan and the Crown King are not related to the competition, otherwise they would not have supported Li Kuan so clearly.

"What Xuanling said makes sense, so I'll wait and see."

Li Shimin's self-control is very good. Although he is still very curious, he saw that Li Kuan did not mean to continue talking, so he stopped asking.

...

In front of the lecture hall of Guanshishan Academy, there is a very wide square.

Walk a few hundred meters along this square and you will reach the football field next to the gate.

In order for everyone to see the experiment, Li Kuan specially arranged it in the football field.

In this way, through the step-shaped seat distribution, there is no need to worry that people in the back row can’t see it.

"Master, everything has been prepared and the air inside the copper ball has been evacuated as you said."

Liu Yuan and Di Renjie stood in front of Li Kuan, explaining the situation of the experiment preparation.

In order to make this experiment more successful, Li Kuan specially exchanged a rubber washer in the system, and then arranged for people to cast two copper hemispheres based on the diameter of the rubber washer.

A device was also installed in it, specifically used to assist in extracting air inside the sphere.

With the technology at this time, an ideal vacuum state is naturally difficult to achieve.

However, this experiment is not necessary to achieve a very high vacuum degree, so Li Kuan is not worried that the experiment will fail.

On the contrary, Liu Yuan and Di Renjie looked a little worried about gains and losses.

"Okay, you will command the manpower later. The increase of one horse and one horse will make everyone feel what surprise means."

Although Li Kuan has never witnessed this experiment with his own eyes, it is still very famous in history. He has seen corresponding records in many books, but he is not worried about failure at all.

If you really want to say that failure is nothing more than a copper ball that could have been pulled open by sixteen horses, but now because the vacuum is not high enough, it is pulled open by ten or six horses.

But even six horses are enough to surprise everyone.

Because there is no connection fixture between the two copper hemispheres.

Normally, a person pulls it apart as soon as he pulls it.

Everyone who had done it in the stands saw Li Kuan telling a few people what they were in the audience.

There is nothing special in the entire football field except a large bronze ball and a group of horses.

This made many people curious about what the experiment was this afternoon?

It’s not that His Highness the King of Chu wants to play bronze balls on the football field, right?

Haven't heard of this gameplay.

"Your Majesty, everyone, everyone has seen this copper ball. This is a copper ball formed by two hollow copper hemispheres being simply bonded together. Under normal circumstances, just by gently breaking it, the two hemispheres will separate. However, I am now arranging people to use a special method to remove all the air in the copper ball. At this time, who would like to come and try it and see if you can break it apart?"

Li Kuan raised his voice and said to Li Shimin and a group of ministers.

As for whether other people who stand a little further can hear it, there is no need to worry about that much.

Who hasn't made the speaker yet?

"I'll give it a try!"

A loud voice sounded beside Li Shimin.

Li Kuan didn't expect that it was Zhang Liang who ended in person.

However, this is good. Everyone knows the skills of this duke. If he can't even break it, I think not many people will feel that they can break it.

"Duke of Yun, please!"

Li Kuan and Zhang Liang had no friendship, and even Zhang Liang's eldest grandson almost had a conflict with his entourage when he signed up for Future Star Kindergarten.

So I didn't talk much nonsense to him.

If she has the ability to break the iron ball apart, she has to consider whether she will pull the laboratory down and slice him!

Zhang Liang ignored Li Kuan and came straight to the bronze ball.

He turned the copper ball a few times and found that it was indeed two hemispheres, and there was no obvious connection trace in the middle.

At both ends of the copper ball, two handles were cast, which was very convenient for people to pull.

"Huh!"

Zhang Liang only put in a little effort at the beginning, but the copper ball did not move at all.

Then, he began to take it seriously.
To be continued...