", how can two iron balls, one big and one small, land at the same time? The big iron balls are heavier, and of course they land first. ”

Li Er sneered, Huang Yan wanted to remind Li Er on the side, this experiment had already been done by Li Yong in the palace a few years ago, and he had forgotten it himself, Li Zhi scratched his head and said.

"Father, the son also thought so at the beginning, everyone thought so, and then my brother-in-law took us to personally verify it, and released two iron balls at the same time at a high place, and the result was that the two iron balls, one large and one small, really landed at the same time."

Empress Eldest Sun exclaimed softly.

"Did you really land at the same time?"

Li Er said categorically.

"It can't be."

"Really, father, it's true, the son saw it with his own eyes, if you don't believe it, you asked the fourth brother, and the fourth brother also saw it with his own eyes."

Li Zhi insisted, and Empress Eldest Sun looked at her and said with a smile.

"If Your Majesty doesn't believe it, it's not simple, let's verify it, okay?"

Li Er snorted.

"Verify it, verify it, I don't believe it, two different iron balls can still land at the same time."

"Go, find two iron balls of different sizes."

"It has to be solid."

Li Zhi did not forget to instruct, Huang Yan was speechless, they had never seen this test Empress Changsun, but you have seen it, why did you forget? The heart is tired, let's destroy, Li Er, Empress Changsun, and Li Zhi stood in front of the tall building, and even Princess Yuzhang rushed over after hearing about it, obviously she was also very curious about it, two iron balls fell from the sky, and everyone's eyes stared at it without blinking.

"Oh~ It landed at the same time, father, mother, did you see it? It landed at the same time. ”

Li Zhi jumped up directly with joy, and Empress Eldest Sun exclaimed.

"It's unbelievable that they actually landed at the same time!"

Li Er didn't give up and let people try it a few more times, and he had to admit stupidly that the two iron balls, one large and one small, did land at the same time.

"Why the hell is that?"

Li Er was puzzled, Li Zhi's eyebrows began to dance, Li Er and Empress Changsun were very fascinated by what they heard, Huang Yan was already silent at this time, and at this time he reminded Li Er that he was looking for death, so just leave it at that.

"My brother-in-law also said that in two days he will talk about atmospheric pressure, and he said that although we can't feel it, but we are actually all around us, and the air is also under pressure, and he has to do a large-scale experiment, and he has sent a lot of invitations, please go to the ceremony, Queen Mother, this is your invitation."

Li Zhi said excitedly, it is said that it was a large-scale experiment, it is exciting to think about, after he handed the invitation to the queen mother, Li Zhi suddenly looked at him with a burning gaze, he turned his head slightly and found that the gaze came from his father, at this time Li Zhi suddenly remembered, only the queen mother has an invitation, but the father has no invitation, brother-in-law will not forget, right? No, this must be deliberate, it's really, it's too exciting, Li Zhi swallowed his saliva nervously, shrunk his neck and became an ostrich, Li Er knew that Li Yong didn't prepare an invitation for him as soon as he saw Li Zhi's appearance, he was so depressed that he almost didn't vomit blood, since he wanted to watch the ceremony, how could he be missing him as an emperor? As a result, Li Yong didn't give him an invitation to the emperor, so he was stingy, but he was really curious about what experiment Li Yong was going to conduct, and he even invited so many people to watch the ceremony, but when he thought that Li Yong didn't invite him at all, could he go? Of course, no one dared to kick him out if he went, but didn't he Li Er lose face? Empress Changsun was very hesitant to take the invitation, of course she wanted to go, but the emperor didn't have an invitation, she complained about Li Yong in her heart, what a bastard, this is a good opportunity to ease relations with the emperor, but Li Yong didn't give the emperor an invitation. Where does this leave the emperor's face? Li Er snorted angrily.

"If the queen has time, go and take a look, see what kind of fame that kid is doing, so-and-so, busy!"

The people of Chang'an didn't understand what the experiment was, so this matter didn't cause any repercussions in Chang'an, but on that day, Li Yong's courtyard was very lively, almost all the nobles in Chang'an came, and some people were cheeky when they didn't receive the invitation, such as the prince Li Chengqian and Hou Sailei, they have also been paying attention to Li Yong, but they are not interested in the so-called mathematics or anything, is that thing useful for governing the country? When he knew that Li Tai and Li Zhi came to study with Li Yong, Li Chengqian even scoffed, Li Tai really didn't even want the face of the prince, Li Tai could not be cheeky, but he, the prince, had to be cheeky, but he still came today, not because he was interested in Li Yong's experiment, but because the nobles in Chang'an City came, but the emperor did not come, and the eldest grandson queen did not come, and the eldest grandson queen suddenly felt unwell, so she didn't come Li Yong didn't care, Li Zhi and Li Tai also came.

"Hey, this tea today is not ordinary."

The eldest grandson Wuji said in surprise, Cheng Yanjin took the tea and drank it, smacking his mouth and saying.

"Well, it's quite fragrant."

"It's really a cow chewing peonies."

Xu Shiji shook his head and sighed.

"Li Yong, Li Yong, what kind of tea is this?"

Wei Chigong asked loudly.

"This is the best Ming Qian Longjing, very rare, not even in the palace, if anyone can pull this copper ball apart today, I will give him a pound of Ming Qian Longjing."

Li Yong threw two hemispheres with both hands and said with a smile, and everyone asked curiously.

"Isn't this already separated? What are you going to do with it? ”

Li Yong explained with a smile.

"It's not sticking up, it's closing it up, and then pumping the air out of it."

Everyone gathered around and watched curiously at Li Yong tinkering there.

"Alright."

Li Yong clapped his hands and smiled, Cheng Yanjin asked suspiciously.

"That's it?"

Li Yong nodded.

"That's it, whoever can pull it away, I will give whoever is a pound of Mingqian Longjing."

Pull it open and send the best Ming Qian Longjing? Who can't pull this away? Cheng Yanjin immediately laughed.

"I'll come, I'll pull~"

Wei Chigong shouted.

"You go, I'll come, I have a lot of strength."

Li Yong said with a smile.

"No need to rob, no need to rob, anyone can try, as long as you can pull it away, I will send a pound of Ming Qian Longjing, and I will never break my word."

Even the steady Du Ruhui, Fang Xuanling, and Wei Zheng are very moved, this Longjing is too attractive before the Ming Dynasty, Cheng Biting Jin grabbed the copper ball, and then began to pull it with both hands, but the copper ball did not move, hey, I still don't believe it, Cheng Biting Jin shouted, exerted all his strength, and his face turned purple, but the copper ball still showed no signs of being opened, Yu Chigong couldn't help laughing.

"Cheng Laomo, what's wrong with you? What is it like to not have enough to eat? Is all the energy used on women? Wow~"

"If you come, I don't believe you can pull it open."

Cheng Yanjin threw the copper ball to Yu Chigong, he felt that this thing was really a bit evil, Yu Chigong took the copper ball, looked around and laughed.

"Let me show you what strength is."

"Hard, hurry up~ Old thief, haven't you eaten enough?"

Cheng Yanjin shouted on the side, just now Yu Chigong was mocking him, now of course he wants to double the ridicule back, Yu Chigong's face is also purple, and he used his greatest strength, but he still didn't pull the copper ball away.

"Hey, it's really evil."

Yu Chi Gong shouted strangely, and the others were also shocked, they could see that both Yu Chi Gong and Cheng Yanjin had used all their strength, and they knew the strength of Yu Chigong and Cheng Yanjin very well, but the two halves of the copper ball were combined, why couldn't they pull it apart? So people couldn't help but come forward and try it, and after trying it, they wondered even more, why can't they pull it away? Li Yong kept looking at it with a smile and said with a smile.

"Uncle Cheng, Uncle Wei Chi, why don't you try it together?"

Cheng Yanjin laughed.

"That can be pulled open."

Li Yong said with a smile.

"Okay, as long as you can pull it open, two catties of Longjing tea will be served before Ming."

"See, okay, you'll be there."

Yu Chigong laughed, Yu Chigong and Cheng Yanjin stepped down at the same time, and then began to pull up hard, and Xu Shiji and the others next to him couldn't help but cheer on the side.

"Hard, a little more strength~"

"Hurry up, Yu Chi Lao Hei, hurry up and work hard~"

"Yu Chi Lao Hei, use your strength to breastfeed~"

However, Wei Chigong and Cheng Biting Jin were purple, and they couldn't pull the two hemispheres apart with all their strength, "hiss~" Everyone couldn't help but gasp, this copper ball is obviously two halves, they saw with their own eyes that Li Yong just put the two hemispheres together, why can't they pull them apart? Li Chongyi, the younger generation, were also stunned, they didn't feel anything when they heard Li Yong say that the atmospheric pressure Yunyun hadn't seen anything, but today they saw it, Li Yong said with a smile.

"Okay, you can't pull it away, the experiment I'm going to do today is to try how many horses can be used to pull these two hemispheres apart."

If they had said that at first, everyone would have cared, but now they are all very curious.

"So what are you waiting for? Try it. ”

Cheng Yanjin and the others shouted.

Li Yong said with a smile.

"Take two horses and come on horseback."

Cheng Yanjin suddenly shouted dissatisfiedly.

"What? Li Yong, do you think your Uncle Cheng doesn't have two horses? ”

"Just pull six horses and come up."

Yu Chigong shouted, it's really a animal, one person has the strength of two horses, and then Li Yong shouted, and the six horses immediately galloped to both sides, bang, and the copper ball was still not separated.

"Two more horses~"

"Two more horses~"

"Two more horses~"

"Oh my God, twelve horses, and I still haven't been able to pull the copper ball apart."

The people next to them were talking a lot, if they didn't see it with their own eyes, they would never believe it when they heard it from others, and even if they saw it with their own eyes, they felt unbelievable.

"Fourteen horses, fourteen horses, fourteen horses haven't been pulled."

"Oh my God."

Li Zhi clapped his hands and screamed excitedly, this scene looked too lively, Li Tai looked at the scene and muttered.

"It's incredible, how is this possible?"

Li Tai and others sincerely felt the charm of science, it turned out that there were so many unsolved mysteries in this world, Li Chengqian and Hou Selei were also shocked, how could a dozen horses not be able to pull away from half an iron ball together? Shock-to-shock, incomprehensible, they still feel very puzzled, what is the use of Li Yong doing such an experiment in such a big battle? What are the benefits for the country and the people? Isn't this just idle and having nothing to do? Cheng Yanjin asked.

"Li Yong, won't you be able to pull it open?"

Li Yong laughed.

"Why, I can pull it away with both hands."

What's that? Li Yong can pull away a copper ball that more than a dozen horses can't pull away with two hands? This is not only an insult to him and Wei Chigong, but also an insult to a dozen horses.

"Impossible! A dozen horses can't pull it open, can you still pull it open with two hands? ”

"That is, Li Yong, can you still be stronger than a dozen horses?"

"If you can pull it away with two hands, Yu Chi Laohei will eat the copper ball!"

Cheng Biting Jin shouted, and Wei Chigong directly gave Cheng Biting Jin a kick, but he didn't have a good airway.

", you just ate the copper ball?"

Cheng Yanjin laughed.

"Do you think Li Yong's strength can be greater than a dozen horses?"

Wei Chigong scratched his head and said.

"That's just as well."

Li Yong's guards sent the copper ball over, and Li Yong had just taken it, when Cheng Yanjin suddenly shouted.

"I'll try it later."

Cheng Biting Jin pulled hard, and then threw it to Li Yong, gloating.

"Come on, come on, you pull, I want to see how you pull it open."

Can Li Yong pull it open? How can it be pulled open, more than a dozen horses have not been able to pull it apart, is that a person able to pull it apart? Li Yong quietly pulled out the stopper, and then gently pulled it with his hand, the copper ball opened, silent, deathly silence, everyone was stunned, more than a dozen horses didn't pull away, why did Li Yong pull it open with his hand gently? Why is that? Cheng Yanjin's eyes almost didn't pop out, and he jumped up immediately.

"This can't be, this can't be~ How can you pull it open?"

Not only Cheng Biting Jin was confused, everyone was confused, what was the trick here, they just couldn't figure it out, and what they were most curious about was, why? Everyone's eyes looked at Li Yong, and when Li Yong explained, Li Yong smiled and said.

"Thank you all for coming to the ceremony, this experiment was a complete success."

After listening to Li Yong's words, everyone's eyes suddenly became unkind, what does this mean? Arouse everyone's curiosity, and then you're ready to slip away? Li Yong said with a smile.

"As for why, it's a bit tricky to explain, just ask them when you get back."

Li Chongyi over there, they suddenly panicked, what the hell? Ask us? What do we know? In the palace, Empress Changsun was resting in bed, her face was a little pale, and Li Er was on her side, looking a little worried.

"The weather is hot, and the palace is indeed stuffy, so I will accompany you to Jiucheng Palace to recuperate in two days."

Li Shimin comforted softly, thinking that Jiucheng Palace was indeed more comfortable than Chang'an, Empress Changsun did not dissuade her, but asked with a smile.

"It's a pity that I didn't go to the ceremony today, what kind of experiment is that bastard boy doing?"

In fact, Li Shimin was also curious, so he had already sent someone to watch the ceremony but reported back from time to time, and when he heard the queen ask, Li Er couldn't help but laugh.

"It was said that Li Yong had joined the hemispheres, and Cheng Yanjin and Wei Chigong couldn't pull it apart even if they tried their best, and now they have added fourteen horses, but they still haven't pulled it apart."