Without waiting for Zhu Cihong to answer, Emperor Chongzhen said solemnly: "In the future, there will be a change from the situation that has not changed much in the previous thousands of years. What I just said is not alarmist, do you remember? ”

"Erchen remembered!" Zhu Cihong didn't dare to slack off, and hurriedly replied respectfully.

At this point, he was indeed a little shocked. I originally thought that Daming was strong again, but I didn't expect that there were still many enemies, and the world was still not peaceful!

As for those cabinet ministers and so on, although they have more experience than the crown prince, their vision is actually only limited to the country, at most it is only in the periphery. Now that Emperor Chongzhen has raised their vision to the whole world, many of them can't help but fall into contemplation.

After Emperor Chongzhen told the prince, he walked to the side of the Franc cannon and stood still, and then said to the prince: "You should know the advantages and disadvantages of this kind of Franc cannon and the general's cannon. Then I would like to ask, can I combine the advantages of these two types of artillery? ”

Hearing this, Zhu Cihong couldn't help but turn his head to look at the surrounding crowd, wanting to find someone.

When Emperor Chongzhen saw him like this, he knew that he was looking for Bi Maokang of the War Bureau. If you want to talk about firearms, he has to be the only one. If he says yes, that's okay, and if he says no, then he probably can't.

So, Emperor Chongzhen didn't urge the prince, just looked at him.

Zhu Cihong quickly found Bi Maokang according to the order of his official position, but at this time, Bi Maokang was thinking about things with his head down, and he couldn't get any hints at all, remembering that his father was asking, so he had to turn his head obediently and answer truthfully: "The son doesn't know!" ”

In this regard, Emperor Chongzhen nodded and said: "It doesn't matter if you don't know, but if you become an emperor in the future, you have to know how to guide your courtiers to work hard for the better." For example, as I just said, can such militaristic heavy weapons have the advantages of both? Even if you can't solve it for a while, you can set goals and let your courtiers try to solve them. If it can really be invented, then my Ming artillery will definitely be much more powerful! ”

"Erchen understands!" When the prince heard this, he immediately replied respectfully.

When Emperor Chongzhen heard this, he walked to the next ornament, but it was a teapot placed on the stove.

When everyone saw this scene, their hearts became curious again. The problems caused by the previous artillery were all related to the heavy weapons of the militaristic state, and it was understandable that the emperor cared about them. But now in this teapot, what will the emperor teach the prince?

It can't be said that it is good for the body to let the prince drink more tea? It is also impossible to ask the prince not to drink tea and waste tea leaves?

No matter how you think about it, with so many people present, no one can guess what the emperor wants to explain with this teapot! Of course, if someone who had traveled over four hundred years had been present, they might have been able to guess.

"Burn the fire!" Emperor Chongzhen gave a faint order, and then turned around and walked to his throne, sitting down to rest first.

When everyone else listened, they all looked at each other, what is the situation? Could it be, this teapot, after the emperor boiled it, each person was rewarded with a cup of tea to warm and warm?

It didn't take long for the water in the teapot to boil, and puffs of white gas came out of the spout.

When Emperor Chongzhen saw this, he asked the prince: "The water in this teapot has been boiled, do you have any ideas?" ”

Hearing this, not only the prince, but also everyone else stared at the teapot. However, no one noticed anything different, and it was even more strange in their hearts.

The crown prince was strange, his father always had to answer, so he had to tell the truth: "The son looks at it and what he sees in other places, it seems that it is no different!" ”

When Emperor Chongzhen heard this, he turned his head and nodded to the blue sky who was waiting beside him.

So, under the watchful eye, Lan Tianbao walked to the boiling teapot, took out a special stopper from his sleeve, and with a little effort to block the spout tightly, and then retreated.

Emperor Chongzhen then said to Zhu Cihong: "You can continue to see, tell me what you think!" ”

When Zhu Cihong heard this, he agreed, and then stared at the teapot curiously, wondering what strange things would happen? At least something strange should happen, so there is an idea that it is not!

The other people in the courtyard were also curious. Among them, some people have never seen the situation of boiling a teapot at all, and some have seen it, but no matter who it is, they don't understand, what will happen next that will make the emperor ask the prince to have ideas?

After a while, I saw that the lid of the pot was pushed up, revealing a gap, and then it fell back again. After waiting for a while, this was the only situation, and it was just a cycle, and other than that, nothing else was strange.

Zhu Cihong is not a prince who is not diligent and does not distinguish between grains and grains, he has seen tea brewing before, but after looking at it carefully for a long time, he found that there was no difference, so he was depressed. Why is my father's lecture today so different, it is completely different from the previous ministers' teachings, and I can't figure it out at all, what should I do? Father is still waiting for an answer!

In the end, he had no choice but to play to Emperor Chongzhen again: "Father, the son looked at it for a while, but he didn't find any difference, it was the same as the ordinary, this ...... I really don't have any special ideas! ”

Emperor Chongzhen listened to it and did not reprimand him, which made the prince feel more comfortable, so he heard Emperor Chongzhen say to him: "You go over and gently press the lid of the pot with your hand to try, but be careful not to be burned by steam!" ”

Hearing this, Zhu Cihong was a little curious and a little grateful, so he bowed down and said yes, and walked over.

Everyone around him was staring at him, wanting to know what special thing would happen next? Some of them, of course, know what happens if you hold your hand down. However, they didn't think there was anything special, so they were just as curious.

I saw Zhu Cihong walk over and carefully press the lid of the pot. Then, he felt a strong push on the lid of the pot, so he used some force and continued to press, but the force against the lid slowly became bigger and bigger, and if he was forced to press it, he could only continue to increase the force.

After a while, he didn't dare to press it anymore, because Emperor Chongzhen had explained that he could press the lid gently.

So, as soon as he let go, the lid was lifted higher than any before, and then fell back again.

Turning around, facing Emperor Chongzhen, he hesitated for a moment and then said: "Father, it seems that someone in this teapot is pushing the lid hard, as long as the son is exerting force, he will also exert force, and he must open the lid of the pot." ”

He was a little unsure, and he didn't know if his father wanted him to have anything to think about this situation. However, other than that, I really didn't have any other feelings, so I had to say it one by one.

When the others heard this, they all turned their heads to look at Emperor Chongzhen, and they also wanted to know if the emperor asked the prince to do this, was it really just for the prince to say this, or was there something else?

I saw Emperor Chongzhen nodding and said, "Yes, what kind of force is in this teapot against you?" ”

"Yes...... The boiling gas after the water is boiled? Zhu Cihong hesitated for a moment, feeling that he was still sure, but he was not completely sure, so he had to answer with a hint of uncertainty.

"Yes!" Emperor Chongzhen immediately gave him an affirmative reply, "When the water is boiled, it will become qi, and this gas has nowhere to go in a closed container, and the more it accumulates, it will form a kind of pressure on the container, just like someone is blowing." Between the lid and the teapot, in fact, only the weight of the lid itself falls on the teapot, and when the pressure is getting greater and greater, exceeding the weight of the lid itself, the lid can be lifted up. If you use more force, you will increase the weight of the lid. The gas in it can only be lifted by increasing the force and force until it exceeds the force you exert and the weight of the teapot. ”

"If you have enough strength to keep pressing the lid to keep the gas from escaping, if the teapot is not strong enough, the power of the gas inside will burst the teapot." When Emperor Chongzhen said this, he stood up, walked slowly to the prince's side, that is, to the side of the teapot, pointed to the teapot and continued, "You see, as long as the gas inside escapes, it will not have enough strength, and the lid of this pot will fall again." Yes and no? ”

"Father is right, the son has been taught!" Zhu Cihong listened and replied respectfully.

For this, although he hadn't thought about it before, he could also figure it out as soon as Emperor Chongzhen said it at this time.

However, he was still a little puzzled in his heart, and he didn't know why his father told him this. It can't be said that this is also related to the heavy weapons of the militaristic state, right?

Most of the others also knew that Emperor Chongzhen was talking about this. They have the same confusion as the crown prince, they don't know what the emperor wants to explain, they understand that the emperor can't just explain what he just said!

Sure enough, I heard Emperor Chongzhen then point to the teapot with his hand and say, "Then what do you think about this situation?" ”

"...... "Look, it's coming, it's coming, and the emperor is asking strange questions again!"

Everyone, including Zhu Cihong, was speechless about this, what else could they think of this situation? That's it!

Zhu Cihong was dumbfounded for a while, and finally had to answer truthfully: "Erchen is stupid, he has no ideas!" ”

When Emperor Chongzhen heard this, he turned his head and looked around, looked at the important ministers in the court, the young prince accompanying him, and other courtiers, and asked them, "What about you, do you have any ideas, you can tell me." ”

"......" Almost everyone lowered their heads when they heard this. They know that there must be a mystery in this, but they just can't see it!

Just when Emperor Chongzhen was a little disappointed, suddenly, he saw Bi Maokang stand up and played: "Your Majesty, this water is boiled and converted into qi, and it can be seen that the same water will become more qi, so that the teapot can't hold it, and it has the strength to go outward." As a result, the gunpowder burns and produces a large amount of gas, so that the projectile can be pushed out rapidly, or the chamber of the gun cannot withstand the force and explode. ”

When the others heard this, they couldn't help but suddenly realize. It turns out that the emperor put artillery here, in fact, to remind why gunpowder has such great power, the reason is this!

Thinking of this, they all looked at Bi Maokang, and secretly praised in their hearts, they really deserved to be the most powerful firearms master in Daming!

However, Emperor Chongzhen naturally didn't want this answer, he didn't expect Bi Maokang to associate it with this, and he said it in a good way, so he smiled and nodded: "Qing can think of this, it's good!" ”

After praising it first, he suddenly changed his words, but then said, "Others, do you have any other ideas?" For example, what can be done about it? ”

As soon as they heard this, even Bi Maokang knew that his answer was actually not the answer that the emperor wanted, so they wondered even more, what other ideas could they have and do other things for such a simple matter?

Seeing that the surroundings were silent again, Emperor Chongzhen no longer studied them, estimating that they would never think of it, so he turned to the prince and said, "You just felt the power of this top pot lid, because the gas will become stronger and stronger. So have you ever wondered how to use this power for others? ”

"Father, did you shoot the lid of the pot?" Zhu Cihong thought for a moment and replied uncertainly.

When Emperor Chongzhen heard this, he shook his head, turned around and paced back to his place and sat down, then looked at the prince who was a little uneasy and said: "If you boil the water, a thrust will be generated, and this thrust belongs to the controllable range, and the size of this force can be controlled according to the degree of fire." If you use some other means to use this force, will it be like this, as long as we control the fire, we can make this thrust do what we want? ”

Hearing this, everyone was almost stupid, thinking in their hearts, is this okay? How?

Emperor Chongzhen knew that if this layer of window paper was not pierced for them, it would be difficult for anyone to see the beautiful scenery outside the window. Only by helping them break through it, with such an example, will this matter be spread, and there will be more and more thoughts about nature in Daming.

So, he didn't wait for someone to come up with one, two, three, and nodded slightly to Lan Tianbao.

When everyone saw it, they couldn't help but pay attention to Lan Tianbao, wanting to know, what is the answer to what the emperor said?

I saw Lan Tianbao take out a roll of paper, and slowly unfold it with another attendant. Suddenly, in this huge roll of paper, a pattern appeared in front of everyone.

This roll is big enough, and the pattern is big enough, even if there are many people present, you can almost see it clearly.

I saw that on the boiling teapot, there were other things drawn, forming a simple pattern. People who don't need to have a lot of experience can understand this diagram if they see it.

Suddenly, they suddenly realized one by one that they could still use this force like this.

But then, a question arose that arose, is this just this thing, worthy of the emperor to teach the prince?

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