Daming: Old Zhu, we agreed not to rush!

Chapter 414 Popularizing science is not just about telling a short story

"Does it feel difficult?"

"It's a bit strenuous."

"Are the seats comfortable?"

"Not very comfortable."

“How does the pedal position feel?”

"It's not very easy to step on."

……

Although she could only ride with support, Su Jing still kept asking Zhu Di about her riding experience.

Su Jing is still very concerned about this first-hand experimental data.

However, the quality of Su Jing's model car is indeed worrying.

Creaky creaky…………

"Jump!"

Su Jing shouted, and Zhu Di jumped out of the car.

The entire car had collapsed into a pile of frames. Except for the two wheels, which were still intact, the other parts were simply a piece of loose sand.

"Is everything okay, King Yan?"

Su Jing asked carefully.

Zhu Di replied: "Sir, I'm fine."

The sudden fall of the bicycle just now really startled Zhu Di, but after all, his body was trained every day, so his reaction was quite quick. He jumped off the bicycle and landed in one go.

"It's fine."

Although Su Jing said this, she was already squatting on the ground and looking at the scattered vehicle frames on the ground.

"There are huge problems with the materials and my technique, and there is a lot of room for improvement!"

Su Jing sighed, not too surprised by this result.

"Sir, it's all because of bad students. I broke your bicycle. Please forgive me, sir."

Zhu Di bowed his head towards Su Jing and admitted his mistake.

Su Jing stood up and smiled and said: "King Yan, if you feel guilty, please help me pull these wooden shelves back to the kitchen. Although they are not good enough for making bicycles, they are still good for making fire."

"what?"

Zhu Di was stunned for a moment, but he immediately responded: "Yes, sir."

Soon Zhu Di pulled all the carriages back to the kitchen. When he returned to the yard, he saw Su Jing already sitting on a chair and lying down.

"Sir, are you?"

Zhu Di said in surprise.

Su Jing smiled and said: "Why, can't I take a leisurely break? Do I have to stop all the time?"

"No, no, that's not what the student meant."

Zhu Di immediately explained: "The student just feels that..."

Zhu Di suddenly found that he didn't know how to explain it.

"Hahaha."

Su Jing laughed and said: "It's okay, King Yan, you should also take a rest. Where did we talk just now?"

Zhu Di replied: "Sir, you said you have already built a small artillery piece."

"exactly."

Su Jing nodded and said: "Yes, it has been built. How is the firearms bureau supervised by your eldest brother the prince now? After the project is completed, it will probably be mass-produced."

Speaking of Zhu Biao, Su Jing really missed him a little. After all, he was his first student.

Zhu Di said: "In reply to Mr. Su, the Firearms Bureau has now supervised the completion of the production."

"Oh, so fast? It's okay."

Su Jing nodded and said: "The Ming Dynasty's Shenji Camp will soon be expanded. After all, I have improved a lot of firearms."

Su Jing is not a narcissistic person, but he is still quite proud of firearm modification.

Although it is said that it has not been able to produce a truly modern firearm, the improvement of Daming firearms has definitely transcended an era.

"Thank you, Mr. Su, for your kindness to Ming Dynasty."

Zhu Di knelt down and thanked Su Jing. As a person obsessed with leading troops in war, Zhu Di knew very well how much firearms meant to the Ming Dynasty.

"King Yan, do you still remember what I told you yesterday? To truly win every battle, you cannot rely solely on cunning tactics. Crushing with force is the way to go."

Su Jing said lightly.

"Students remember, keep it in mind."

Zhu Di nodded immediately.

"Cough cough."

Su Jing coughed twice and said: "I want to tell you that nothing can be too absolute. Sometimes, the troops are insufficient. After all, if whoever has more troops can win, then your father will not be able to create the Ming Dynasty. "

Originally, Su Jing thought that what she said was right. The best way to win the war must be to crush the enemy with force.

But when I think about Zhu Di, in the original history, it was the Battle of Jingnan, where he won with the military power of a vassal state against the entire Ming Dynasty.

If a war with this kind of contrast between strengths and weaknesses can be won, then what I said to Zhu Di was a bit wrong.

It is better to change your words in advance so as not to be caught later.

"Students remember."

Although Zhu Di didn't know why Su Jing said this again, he still remembered it in his heart.

Su Jing added: "The territory your Majesty entrusted to King Yan is Beiping."

"Yes, Mr. Su."

Zhu Di nodded.

Su Jing said: "Beiping is not as good as Yingtian Mansion. It is extremely cold in winter and there are many deserts. If King Yan becomes a vassal in the future, his life will not be as comfortable as here."

Zhu Di looked straight and said: "Don't be afraid of students, a good man should fight on the battlefield. In the future, I will stick to Peking for the Ming Dynasty!"

Zhu Di is still full of enthusiasm now.

He really had no intention of seizing the throne. After all, with a prince like Zhu Biao here, he really had no chance.

Su Jing smiled and said: "King Yan really has a good ambition. It seems that the north will be fine in the future."

"Students must try their best and never let down Mr. Su's expectations."

Zhu Di looked excited. This was Su Jing's approval, which was not something ordinary people could have.

"Hahaha, King Yan, you are putting pressure on me."

Su Jing smiled and said: "Who can say clearly what will happen in the future?"

Su Jing still had a very good impression of Zhu Di. The future Emperor Yongle, at least when he was a boy, performed very well.

Su Jing didn't know whether she could really change the direction of the future. Whether the history of the Ming Dynasty would continue normally.

He only knew that what he should do now was what he had to do.

"Sir, you told the students before that the Northern Expedition went well this time and the army will be back soon, right?"

Zhu Di asked Su Jing.

That's what Su Jing said when Zhu Di arrived on the first day. Zhu Di didn't notice it at the time.

But now he thought of something abnormal, the situation of the Northern Expedition, which was thousands of miles away.

Even for his father, the urgent report from the military would take nearly a month to come back from the front line.

Su Jing can find out by doing carpentry in this small courtyard in Lishui County. It is really incredible.

"Well, it will be soon. This time the Northern Expedition went smoothly, and the remnants of the Yuan Dynasty should be able to live in peace for a while." Su Jing said lightly, without hiding it.

Anyway, Zhu Di is a smart kid and has realized that he can know some things about the future, whether he talks about it or not.

Zhu Di was overjoyed and said: "The victory in the Northern Expedition is really a great thing. Thank you, sir, for informing me."

"King Yan, actually, my military skills are just on paper. If you really want to learn, it would be good to learn from a general like Wei Guogong. In this Northern Expedition, the deployment of troops in the frontline battle is a practical case. It will definitely be able to Learned a lot.”

Su Jing changed her subject.

He was really afraid that Zhu Di would pester him to tell him about the art of war and military formations.

Su Jing didn't want to mislead anyone, nor was she interested in pretending to understand.

"The student understands, but the student is still very interested in the train that the gentleman mentioned. I wonder if the gentleman can say more."

Zhu Di looked at Su Jing, his eyes full of curiosity.

Su Jing sighed and said calmly: "That's okay, as long as it's not about the military formation, I don't mind talking to you."

"It's just that I have to state in advance that trains are said to be means of transportation, but they require advanced scientific knowledge to support them. King Yan, you don't like to read on weekdays. Can you really listen to these scientific theories when I talk about them? Go in?"

Zhu Di looked a little embarrassed. He didn't expect that his reputation as not fond of reading would be very loud among Su Jing.

"Don't worry, sir, the students have realized their own shortcomings. Only by being good at both civil and military skills can they contribute to the Ming Dynasty. So the students are already studying hard."

Zhu Di said with a serious face, of course this is also true, he does study a lot now.

Of course, the foundation is too poor and the progress is slow.

Su Jing smiled and said: "That's okay, I'll just treat it as science popularization, and you'll just treat it as understanding some physical phenomena and principles."

"Whether you want to learn or not is not our main goal. Let's see if you are interested in this first."

Su Jing still has no pressure in taking this kind of class.

Building a train is very profound.

But after briefly describing the principle of the train's advancement, Su Jing was still very confident.

Because Zhu Di is a student who knows nothing, he only needs to explain some basic knowledge.

"Thank you, Mr. Su!"

Zhu Di cupped his hands and said.

Soon, there was a blackboard in the yard. Of course, it was not a modern erasable blackboard, but a blackboard made of a board covered with white paper.

Su Jing took a brush and drew a simple outline of the track and the train on the blackboard: "King Yan, this is probably what a train looks like. The front of the train is the core and the place that provides power."

"Needless to say, the track is the fixed trajectory of the train. If you want to build a train, the most important thing is the train's engine."

"The so-called engine is probably equivalent to the horse that pulls the train forward."

As Su Jing spoke, she took out another wooden block and placed it in front of Zhu Di's eyes, roughly gesticulating the movement of the train.

Zhu Di asked curiously: "Mr. Su, how does this engine push the train forward?"

"Don't worry, King Yan, how the engine works is indeed the most critical, but the structure of the engine is very complicated. Even if I make one now, you probably won't be able to understand it."

Su Jing said calmly: "Let's do it step by step, first understand why the train can be driven by burning coal."

"Prince Yan, take the small stove from the kitchen, fill the kettle with water, and bring it with you."

Zhu Di nodded and quickly brought the stove and kettle.

"Very well, then you make a fire and start boiling water."

Su Jing said again.

This made Zhu Di a little confused, knowing what Su Jing wanted to do.

But if you don't understand what Su Jing said, just do it.

Soon the fire came up, flames burst out of the stove, and Zhu Di put the kettle on it.

Su Jing took another wooden plug and blocked the spout directly.

"Mr. Su, why do you plug the spout when boiling water?"

Zhu Di asked puzzledly.

Su Jing smiled and said, "Don't worry, just watch."

Soon, under the heat of the flame, the water in the kettle continued to heat up until it boiled.

Then, the lid of the pot was pushed open.

Su Jing immediately said: "King Yan, did you see it? The lid of this kettle was opened. I didn't add a lot of water. Do you know why the lid was opened?"

Zhu Di looked at Su Jing in surprise and said: "Isn't it a very simple truth that heat rises and cold falls? Mr. Su, isn't this how the Kongming Lantern rises into the sky?"

……

Su Jing, who was still immersed in popular science, was suddenly confused.

He originally thought that he could teach Zhu Di directly based on the short story about Watt's discovery of the principle of steam in the previous physics textbook.

Unexpectedly, the ancient Chinese people already knew the principle of rising heat.

There are also Kongming lanterns, which are the best interpretation of the rising heat of combustion.

"Well, well, that's probably the truth anyway."

Su Jing said with some embarrassment: "King Yan, you have also seen that when boiling water, the water will boil and produce steam, which can lift the lid of the kettle."

"If there is enough water and enough fire to keep the water boiling and keep opening the lid, can we keep moving forward?"

Now it was Zhu Di's turn to be dumbfounded. He couldn't push the steam to open the lid and the train moved forward.

"Sir, the student doesn't understand, what's the connection between the two?"

Zhu Di said with a confused look.

This……

Su Jing suddenly discovered that if she wanted to popularize real science about steam engines, just telling some short stories would not work at all.

Thinking about the physics class I took when I was a child, when the steam engine was mentioned, I actually didn’t understand the principle at all. I just remembered the test point, Watt invented the steam engine.

Now, Zhu Di was not trying to cope with the exam, but wanted to truly understand the principles of the steam engine.

Su Jing was suddenly in trouble and immediately started to think.

Zhu Di looked at the stove that was boiling water, his eyes still dull, and he didn't understand at all.

It seems I'm still too stupid.

Zhu Di thought this in his heart. He didn't think it was Su Jing's problem at all.

If you don’t understand it, then your brain is weak.

"Mr. Su, you are too much of a student..."

"Have it!"

Just as Zhu Di was about to admit his mistake, Su Jing's eyes suddenly lit up, and then she turned around and returned to the house.

Zhu Di was a little confused and could only wait.

Su Jing came out soon, with a glass bottle in her hand. It was a special-shaped glass bottle with a conical body, but there was a long pipe at the top, which was bent and dragged to a position similar to the bottom of the bottle. .

"With this bottle, that should be enough."

Su Jing looked excited, took another template from the ground and started working on it.

Zhu Di didn't know what Su Jing was going to do, so he looked at Su Jing's operations curiously.

Not long after, a strange device appeared in Su Jing's hand.

There is a small shelf on a wooden board, and the strange-shaped bottle is placed on the shelf, with a small candle underneath.

The mouth of the bottle was extended by Su Jing with a straw pole. With a slight adjustment, it could be lower than the wooden board.

Su Jing looked at the device in her hand and smiled: "King Yan, let me show you the working principle of a simple steam engine!"

(End of this chapter)