“…… Early voyagers would follow the continental coast, and they were able to determine whether their course was accurate by the land's features. At that time, no shipowner dared to venture to the sea, where there was no land in sight.

It is also believed that shipwrecks on reefs and shoals are less dangerous than sinking in the sea. Therefore, in ocean voyages, discerning the direction of navigation is always the first priority. And on the endless ocean, it is especially easy to lose your way. You can only rely on the sun during the day and the North Star at night, but that alone is not enough. Your Royal Highnesses, do you know why? ”

A milky voice replied, "Because when the weather is bad, you can't see anything." ”

The Western teacher's expression was always so exaggerated when he made compliments, he hooked the corners of his mouth to the base of his ears, and gave a big smile, "Oh, Your Highness answered very correctly!" So how do people solve this problem? ”

Aveiro took out a compass and said, "Three highnesses, please see, this is called a compass, also called a compass, about three hundred years ago, the prototype of the compass was introduced to the West from the East, and then improved by Western navigators to make a better magnetic compass." Isn't it amazing that it is not affected by the weather and can always point north? ”

Zai Yan was a little skeptical, "Is it really possible?" Why can a small compass point north? ”

"This needs to be discovered by the ingenuity of His Highnesses. If this can be explained, presumably His Majesty the Emperor will also be proud of His Royal Highness. ”

"Ah, don't you know why?"

"Yes, Your Highness. So far, people have only discovered and exploited this law, but why the miraculous nature left such a law is not explained by a scholar with sufficient wisdom in the East and the West. Even, in the West, many seafarers were at first afraid of it, believing that it had magical powers, that even those daring captains would use it secretly, and that it would be kept in a small box so that no one else would find out, so as not to cause panic. ”

"Well...... I see. Zai Yan frowned and thought, he turned his head and asked Zai Yan, who had been silent, "Second brother, what did you say it was for?" ”

Zai Yan was a little tender-faced, delicate like a girl, he shook his head, "I don't know." ”

The princes are in class.

Zhu Houzhao didn't want to disturb, but as soon as the subordinates saw him, they knelt down one after another and said, "See the emperor." ”

So that all the people inside would hear it.

Zaiyao, Zaiyan, and Zaiyao immediately walked out, they were all still very young, especially Zaiyao, who was short-handed and short-footed, and also learned from his brothers to kneel and kowtow, "See my father!" ”

"Oh, okay, all up."

Zhu Houzhao walked over, touched the boss's head, pinched the second child's face, and picked up the third child and turned around, "Tell my father, have you studied well in the course of knowing the world today?" No one doesn't listen carefully to the teacher, right? ”

Zai Yao's small palm, so small that it was not as big as a chrysanthemum, he said: "Today, Mr. Aveiro told us about the compass. ”

"Father, Mr. Aveiro's country is thousands of miles away, and it is far away from the ocean, so it must be possible to make the trip with a compass." Jaegen is nine years old, and he speaks decently.

"Yes, if you want to sail at sea, it is especially easy to lose your direction without a compass."

But why does the compass point the way? Please ask my father to clear his doubts. ”

The emperor used to explain to them the reasons for various phenomena in life, coupled with the son's dependence on his father, so Zai Yuan habitually brought it up.

Of course, Zhu Houzhao also knows that this is a matter of common sense. But this is a problem to explain.

How to explain it? Tell him that the Earth is a magnetic field? So what is a magnetic field? Why does a magnetic field have a direction?

He glanced at Aveiro.

Aveiro could only apologize, "Your Majesty, forgive me, this is indeed still an unsolvable problem." ”

"You'll find out someday." The emperor took his sons' hands, "Just like my father once said, there are answers to all the questions in this world, but our generation doesn't know them yet, so we have to keep chasing the answers, and when we grow up, we have to keep asking." ”

"Why?"

Because the people of the Ming Dynasty can't answer. And in other countries, someone will slowly be able to answer, and over time, they will understand more than us, and that day the Ming will lag behind. ”

Zai Yan and Zai Yan could understand a little more, and they said with a straight face: "Thank you for my father's teachings!" ”

"Yes."

The emperor lowered his head again, "San'er, have you learned Western dialect today?" ”

"Back to my father, the third child has learned, two words!" He gestured in a 'two' position, bared his small, white teeth, and smiled pleasantly.

"Good, all good. Come, come with me. Zaiyan, you hold Dian San'er, don't let him fall. ”

"Yes." Zai Yan glutinous answered.

"I'm going to explain something to you today." The emperor glanced at You Ji, the old guy retreated a little farther away, and then Zhu Houzhao squatted down, lowered his voice, and was a little mysterious, "I can't tell others about this matter, I can only tell my father secretly, do you understand?" ”

It's a way to coax children, pretending to be mysterious or something.

The three babies really got excited, "Father, please speak." ”

"This, father, because of the busy government affairs, I have to go on a long trip, and I won't see him for a few months. During this period, let's make a covenant, as long as we do it, how about my father come back and have a good time with you? ”

"Good! Good! ”

Zhu Houzhao began, "Zaiyuan, you are very good at reading, and you are bold, but you don't want to be quiet, it's fun, my father agreed with you, if you can make significant progress in calligraphy during this time, then come back and your father will send someone to take you out of the palace to play in the city that never sleeps, how about it?" ”

Zaiyuan was overjoyed, "Thank you, Father!" Children must practice calligraphy well! ”

"Yes." The emperor faced Zai Yan again, "Second brother, don't be so shy." Father knows you're smart. But in addition to being knowledgeable, the prince must also be in good health. When your father returns, you will learn to ride a horse skillfully. ”

"Yes, my son will obey my father's will."

"San'er, just know a few more words!"

Zaiyao leaned up his round head, "The sons and daughters also obey their father's orders." ”

"Hahaha."

Zhu Houzhao's princes are all educated.

But none of them have received a pure imperial education.

This has something to do with his identity, for example, when he was young, he was the prince, and there were many rules when he went out to study, from the professor's teacher to the location, procedure, and content of the lecture, there was a set of etiquette.

But they are all concubines, so there is no way.

Zhu Houzhao didn't bother to bother with these, just so he could arrange some other teachers and courses for them, for example, this Aveiro was the Western teacher he found.

In addition to traditional literacy and literacy, Zhu Houzhao would ask Aveiro to teach them foreign languages, astronomy, navigation, mathematics and so on.

At this time, Western science was not systematic, and most of the so-called astronomy and navigation were not very profound, so they would not be too much to stand when they were studied together.

Through these courses, Zaiyuan and Zaiqi should now have a lot of knowledge about many countries outside the Ming Dynasty and at the end of the ocean. They are still children, and they have been instilled with this knowledge since childhood, and when they grow up, they will naturally know that there is a big world beyond the Ming Dynasty.

"The concubines see the emperor."

A coquettish shout woke up the contemplative emperor, and when he looked up, he found that it was a beautiful face, "It's Concubine Xian." Coming to pick up Yao? ”

"Yes, Your Majesty, what did that Western teacher say, is Zaiyao obedient in class?"

"You let him tell you, even though he is five years old, he can speak, haha."

The Son of Heaven is in a good mood, so it seems that the result is good.

Zhu Houzhao saw what she thought of again, and after thinking about it, he blurted out, "Ah, by the way, Concubine Xian, you will go to Jiangnan this time...... Come and be my companion, how about you? It just so happens that your mother's house is there. ”

Concubine Chen Xian has always been quiet and serious, and her personality is even more light-hearted, but when she heard the emperor say this, she seemed to be a little overjoyed......

===

Originally, I wanted to save it for tomorrow's update, because tomorrow there is a meeting that will be held for a day.

But forget it, let's do it tomorrow. There will probably be no more three, and strive to reach the passing line of two more. Come on.

(End of chapter)