Wang Zheng was indeed a little surprised.

He dared not not answer the emperor's questions.

After all, Wang Zheng was proficient in some physics. He said: "Your Majesty, I think there is an invisible force that pushes the hollow ball, causing it to rotate up and down."

"Where did this force come from?"

Wang Zheng looked at the flipped ball and said, "This force comes from the white steam spewed out from the two holes. This is the cleverness of this thing. The two holes are in the opposite direction. The white steam spewed out is one upward and the other downward, allowing the hollow ball to rotate just right. If the two holes are in the same direction, it will conflict with each other."

Wang Zheng also flattered and pleased the emperor.

"Then where did these two white steam come from?"

"After the water below boils, there will be heat up, so it will come up from below."

"You mean, after the water boils, it produces hot air, and the hot air spurts out from the two holes, creating two forces that drive the rotation of the ball?"

"Yes, your Majesty."

“It makes sense.”

"Wang Cheng'en, remember it."

"One, water heats up to produce hot air."

"Two, the heat will surge."

"Three, hot air surges upwards, nozzle orifices, and generates thrust."

"Four, two thrusts push the ball to rotate."

These four points are actually obvious, and it is not difficult for ancient people to understand.

The most important thing is that these four principles will be used in steam engine production in the future.

You can't tell the ancient steam engine directly first.

If you talk about the steam engine directly, they may not be able to completely digest it, so they have to do it step by step.

As a person in the 21st century, he has learned a variety of science knowledge after the human scientific and technological revolution.

Every formula for science knowledge may have been thought out by our predecessors for a lot of time.

Just talk about the steam engine, it has been iterated several times in the UK, with a span of decades.

Finally, Watt found several angel investors, and after bankrupting all of them, he completed the improvement of the steam engine when he was on the verge of despair and obtained patents to be put into mass production.

So, this is not a question of whether it is smart or not.

There is a concept in psychology called the curse of knowledge.

What is the curse of knowledge?

It means that if a person is very familiar with some knowledge or the principles of affairs, he will think that these things are very simple.

Others may not think it is simple, and others may even think that every concept he says is unfamiliar.

But he couldn't understand the strangeness of others.

This is why most math teachers often say one thing: This question is a bonus question!

But most students are confused.

Most of the people who can overcome the "knowledge curse" psychology in reality are extremely insightful people, and most people live in their own world.

I feel that the field I understand is very simple, so I should know it for granted.

Seeing that Wang Zheng had a good understanding, Zhang Chen was already very satisfied with Wang Zheng's performance.

He even made preparations for Wang Zheng to be confused, and it was beyond his expectations that Wang Zheng could beat him.

It seems that many observations of machinery by the ancients were very good, but they did not form systematic theoretical knowledge.

"Wang Aiqing, you go down first, I will find you if I have time."

Wang Zheng was confused and said, "I will leave."

After Wang Zheng left, Chongzhen said, "Bi Aiqing, just say anything."

"yes."

Bi Ziyan handed over a memorial, which was the memorial of Yingtianfu's house search.

When Zhang Chen saw it, he was obviously stunned.

The money copied...

It's really a lot of fucking!

100 million taels!

What is this concept?

At the end of the Ming Dynasty, the maximum silver in the world was only 400 million taels.

And most of them flow in large quantities after the Longqing switch.

The Longqing switch flowed in about 330 million silver, accounting for one-third of the world.

Of course, many Portuguese have also flowed in from Macau.

The Spanish occupied Luzon Island, and a lot of business in Luzon and Fujian also flowed in.

Although it means that the court prohibited the sea, the Longqing switch only opened a very small port in Fujian.

However, the Ming Dynasty court was a small government with a high centralization and had weak control over local areas, which led to the high activity of merchants along the coast of the late Ming Dynasty.

Since the Longqing switch in the middle and late period, a large amount of silver flowed into the hands of the Portuguese and Spanish, the Ming Dynasty realized the silver standard.

He even has the title of "Silver Empire".

This is also the basic condition for Zhang Juzheng's reform.

Of course, this matter has two sides.

From a macroeconomic perspective, a large amount of silver flowed in unprecedentedly, but the distribution was extremely uneven.

Most of them are concentrated in the southeast.

This is also the reason why many people in later generations often mention the concept of "Southeast chaebol" online.

Of course, this matter is exaggerated.

In the imperial society, as long as the great dynasty is still unified, there will be no real "big chaebol".

So the question is, since it is so rich and without the "big chaebol", why is the court still so poor?

Why did the peasant army still cause an uprising?

The same goes for the same sentence: the administrative system of the Ming Dynasty collapsed in the middle and late periods, and the court changed from a large government in the era of Zhu Yuanzhang and Zhu Di to a highly centralized small government.

Moreover, due to more than two hundred years of development, the private economic structure has developed diversifiedly.

The system of the Ming Dynasty was still the system of the Zhu Yuanzhang era.

Back then, Zhu Yuanzhang encouraged agriculture and military households, which were necessary for that era. After all, conquering the world and the world had just settled, and farming and preparing large-scale reserves were needed.

But what about the later stage?

Commerce and handicrafts have developed unprecedentedly, but the court has not set up corresponding commercial departments, and even the commercial tax office is still in relatively narrow areas.

In short, the economic foundation and superstructure are seriously disconnected.

So much so that the Ming Dynasty gave people the illusion of free tradeism.

Some people even believe that Hayekism (absolute free trade) was very popular in the Ming Dynasty.

Among them, Nanzhili, which has the most developed handicraft industry and canal transportation systems, is a typical example.

And this time, I copied the Jinling City, the richest central area in Nanzhili.

It should be said to be the richest area in the Ming Dynasty.

100 million taels, close to one-quarter of the total silver in the world.

Of course, 100 million is not from the entire Nanjing city, and the real amount of silver copied out is not so much, with millions of taels of gold.

Finally, the amount of silver is exchanged uniformly.

But this is also very distorted.

A small number of people have mastered unprecedented wealth. These wealth and power are combined to plunder production resources on the land of China, making countless people become serfs and unable to cross the class for their entire lives.

They even plundered greedily, leaving countless people homeless.

Historically, the weak court did not dare to touch these interest groups, but collected the "three pays" from the civilians, and intensified uprisings broke out in various places.

This time, Zhang Chen moved.

After the movement, the court ministers were forced to "whip the corpse" against officials and nobles in Nanjing.
Chapter completed!