The course for the second brother of the prince has started again after one month!

The last time the prince took them to play with magnets in class was still fresh in memory. The little princes were very looking forward to the new "science course".

Sure enough, Yinreng took them to play with new tricks this time, and he brought the prism made from the official kiln of Glazed Glass.

Yinzhi missed the last time and was studying in the army. Naturally, he would not return to the study room as "free" as Yinreng. He only felt that he had missed a lot. This time he took a month off for the New Year and said that he would go back to the study room to take a look.

As the companion of the Crown Prince, Cao Zhen studied in the study room with the third prince for a month. He thought of it because he was crying. Perhaps because he knew too much and had good knowledge, the third prince always regarded him as the "stand-in" of the Crown Prince. He couldn't find his prince to answer the questions, so he came to him to answer the questions. So in order to solve the endless tricky problems of the Third Prince, Cao Zhen had no time to free up and took out the hard work he had studied with the Emperor Prince and followed up his studies in the study room.

This time Yinreng came, not only with the help of his little assistant Cao Zhen, but also with an older brother to listen.

"Today I want to teach you the knowledge that I want to teach you is related to light. The ancient books about light include "Dream Xi Bitan" from the Northern Song Dynasty and "Ge Xiang New Book" from the Yuan Dynasty. "Dream Xi Bitan" says, "The rainbow is the shadow of the sun in the rain, and the sun shines in the rain (1)". Therefore, today I use a prism to present the 'rain' to you."

What a magical thing about a small prism turning the colors of a rainbow under the sun!

"The creation of prisms was learned by the solitary, not by the solitary ones. But I read a book and found that a scholar named Newton on the other side of the ocean had already created prisms before they were born, and discovered seven colors of light, both red, orange, yellow, green, blue and purple, but you can count them, what are the colors of this rainbow?"

It is not easy to carefully distinguish the scattered light and color, especially the naked eye is difficult to distinguish between blue and purple, so the little princes counting and counting are different from what Yinreng said.

Several young princes were not brave enough to speak up and refute Yinreng. Yinzhi was the most courageous and knew that he had to raise questions when he studied with the second brother of the crown prince. The second brother liked him to raise questions. No matter whether it was right or wrong, as long as he asked, he would always get praise and encouragement. This also made Yinzhi full of confidence and exploration in learning since childhood. As long as he was not afraid of learning and did not have subconscious inferiority, his grades would naturally come. He gradually established his confidence in learning and no longer evaded the teachings of the Grand Tutor and his gentlemen. This is Yinzhi, who is influenced by Yinreng, became more and more fond of learning the more he learned, was naturally sensitive to literature, and was really talented.

Since the prince and the eldest prince went to the previous dynasty, someone taught privately. In the study room, Yinzhi had the best grades and the oldest, and looked like the eldest brother.

"The second brother of the prince, there seem to be no seven types, there are only six colors in total."

"It is indeed six kinds, because our eyes can only see the six colors," Yinreng nodded and said, "Only by relying on precise instruments can everyone see the two colors mixed together, blue and purple. But Newton did not record it in his own book. He wrote in this way, "Six is ​​an unknown mantra, and it is the demon tempting the world. How kind is God, how can he make the light have six colors?" So he classified it as the seven colors."

Yinreng smiled and said, "There were actually many missionaries who believed in God in the Qing Dynasty. They came from another path in the ocean on a big ship, which was different from the locals in the Qing Dynasty. Some people have yellow hair and blue eyes. Isn't it weird? They actually thought that six is ​​an unknown number, just like we have avoided the number four since ancient times because it is homophonic to death."

Yinzuo opened his mouth wide and showed a look of amazement.

Missionaries, what a strange word, what are the sea and the ship?

The prince's lessons always make them think a lot. The wings of imagination fly into the air like birds, hoping to grow up quickly to explore this unknown and attractive world.

From the scattering of light and the refraction of light, the small holes appeared, and took the younger brothers to play with convex lenses and concave lenses. Yinreng also brought them a haha ​​mirror, allowing the younger brothers to watch them around the haha ​​mirror with twisted curves on three sides, which made the few small ones laugh and lingered in front of the mirror and looked around.

Yinzhi is fourteen years old. According to Khan Ama's intention, he will find a candidate for the concubine for him from the start of the draft next year. The princess also started to look for it together. Concubine Hui in the harem began to "be ready to move". He himself, before he woke up the string, stayed in the army full of Han. As soon as he came back, he heard that he was about to start looking for the concubine, and was confused!

Once he starts a family and starts a career, he will be an "adult prince", and the meaning will be different. At that time, he can display his ambitions and do many things that young princes cannot do.

Whether it is leading troops to fight or otherwise, he will become the first adult son to be sent outside.

As Ledehon said, his family is of course more trustworthy than outsiders. The Jueluo clan must have great power in the army and have a place in the court.

But I don’t know that my own son is more trustworthy than the royal family.

Perhaps feeling the threat of Yinzhi's status, Ledehon replaced Yinzhi's confidants who infiltrated the army with his own people on the grounds of cooperating with the emperor and His Highness to carry out military reform.

If the royal family has a high opinion of themselves and is not tactful enough, then even Khan Ama will have times when she can't bear it anymore. Is Baocheng aware of how much trouble the military reform he proposed has brought to him? Did he know that Khan Ama began to inspect the noble ladies of the Eight Banners and look for him for the candidates for the Crown Princess?

Yinzhi, who was already worried about his career, was dazed in a daze. The young princes here were laughing and laughing.

"Hahaha, my sixth brother suddenly turned into a dwarf winter melon."

"Wow, Brother Wu has become thinner than a bamboo pole!"

Yinzhen was in his heart: Humph, these are just the prince who brought to tease the children and play, so I won’t be fooled.

"Fourth brother, come and take a look, it's so fun," Yinzhi pulled Yinzhen and pulled him to the mirror.

I don’t know what awkwardness was happening to the fourth brother, so he followed behind with a reserved attitude, really pulled him to the mirror, and couldn’t stop staring at himself in the mirror.

Yinreng asked with a smile: "How is it, isn't it fun?"

Yinzhen looked calm: Am I an unknown person like that? I have known what the concave mirror is.

The rest of the little princes: "Funny—"

"Okay, let's talk about our current astronomical phenomena. Let's sit back on our seats."

Yinreng clapped his hands and gave the order, and the young princes did not resist at all. They sat back on their seats and waited for him to continue teaching.

In particular, Yinzhen's younger brother Yinzuo looked at the prince with a stare, and there seemed to be an invisible tail behind him shaking.

Yinzhen was heartbroken for a while, and his expression, who had been watching coldly before, changed, and he began to listen carefully. Why can the prince always coax a few young people to be obedient and obedient? What did he rely on to make them admire and love? These are all worthy of his investigation.

[Grand friend, the fourth brother is secretly learning. He must envy you for getting your younger brothers' likes.] Yinreng was happy: If the fourth brother should not always have a cold face, and every time he sees his younger brothers, he will not be disliked by Xiaoliu so much.

Unfortunately, it seems that he has been affected too much in his previous life. Yinzhen, who was reborn with his memories, cannot abandon his integrity and lower limits, nor can he get along with the children like a real child and play together.

His two lives combined with an old man who was over 60 years old, really had no intention of guessing what the children were thinking. He was an emperor who was used to being a pampered person. Since he ascended the throne, only others have always guessed his thoughts, but not others have thoughts.

Every time he was beaten by the prince in his life, he just hoped that the prince would not always remember him. He could not bear the torture and his heart was not as tired as he could.

Yinzhen even had some resentment: It would be great if the prince was reborn with his memories. If he had memories of his previous life, how could he have made such a fuss?

Although the crown prince Yinreng in his previous life was arrogant, he had his own crown prince's burden so he would not do anything that would damage his crown prince's noble image. The current crown prince Yinreng is simply a child king, and even Khan Ama couldn't resist him.

"Next, Gu wants to talk about the moon's phases and waxing. The fact that the moon itself does not shine has been explained in the Song Dynasty!"

"Shen Kuo wrote in "Mengxi Bitan" that 'The shape of the sun and the moon is like a pill, how can we know it? The profit and loss of the moon can be verified...'(2)"

Yinreng knew that taking theory courses was always boring, but while explaining, he took out the round night pearls as the sun for demonstration, and asked people to pull down the curtains to create a dark environment for the house, and the course became interesting again.

After the lecture was completed, Yinzhi originally planned to meet Yinreng in private, talk about the information he had obtained recently, and then mention his recent actions that made the courtiers and Khan Ama very tired, and even caught him off guard.

Yinreng wanted to have a good exchange with his fourth brother first, but Brother Tutu couldn't help but feel kindness. The third brother also looked at him with Bambi's eyes, but he couldn't bear to refuse.

However, since Khan Ama relaxed him and promised him to come to the study to cultivate feelings with his younger brothers, how could he miss such a good opportunity? If he didn't do something meaningful, Khan Ama didn't know how hard he worked!

So when the young brothers followed the gentlemen to take literature class, he invited the three brothers to gather at the place where Du Lide had originally compiled books in the study room. There were many documents hidden inside, and people often came to clean it, but the Grand Master was gone, but it was completely empty, and it became a place where Yinreng rested.

Yinreng cleared his throat, asked everyone to sit around the small table, handed paper and pen to his brothers, and started his new plan - to pull his younger brothers to write the year-end summary together.

This year, my younger brothers will write the year-end summary, and next year, the ministers will write the year-end summary. The year after year, the whole Qing Dynasty will write the year-end summary. Criticism and self-criticism are a good habit. Yinreng said to Xiaomei in his heart: Gu thinks that Gu can spread this good habit, no, pass it on to others, so that everyone can be proactive in remembering the bitterness and sweetness, strive to break through themselves, and welcome a better future!

[Old friends are right! Criticism and self-criticism are fine traditions and good styles, worthy of advocacy!] Yinreng thought so, and did the same.

"It's time for the end of the year again. What have the brothers done and learned in the past year? Why don't you come to a summary meeting, learn from the wrong lessons of the past, look forward to the future, and hope that next year will be better. I feel that the year-end summary is conducive to us looking back on the past year, making plans for the new year, and new atmosphere. When we grow up, the world is also changing. We cannot stand still. We can only look forward and make sufficient preparations to face difficulties and solve various difficulties that will arise in the future."

Yinzhi sighed: "Baocheng said very much, in the past year, you and my brothers have been together for a long time. I thought I would learn some and gain some with the Ministry of War, but I was still defeated because I was too timid and dared not take action, so I missed many good opportunities. Compared to you who studied in the Ministry of Rites and the Ministry of Personnel, I was still a little worse than you."

Yinreng began his speech, and he looked lonely and said in a low voice: "I am very sorry, I have accomplished nothing in the past year."

Yinzhi: "Ah?"

Yinzhen: "..."

Yinzhi wanted to speak but stopped: "Why did the second brother of the prince say that? Your contribution to the government has been passed to the study room now, and my younger brothers are envious of you!"

Yinreng sighed: "People always envy the light on others, but they don't know that they are also envied. When they were young, they always hoped to grow up quickly and explore the outside world. Now they have grown up, but they miss the carefreeness of their childhood. If someone asks Gu what he wants to do when he grows up, then Gu may answer, 'When he grows up, I want to be a child'."

Yin Nei: You can just fall down!

The author has something to say: "Mengxi Bitan" is an encyclopedia with rich content, which greatly summarizes the scientific achievements of ancient my country, including many discussions on optics. The linear propagation of light, lenses, mirror imaging, etc.

Note (1) Regarding the dispersion of light. "At the height of the north of the Black Water Land, Zhuo Ting's tent at the foot of Yong'an Mountain. At that time, the rainbow rainbow was down in the tent. I saw the rainbow in front of the tent. I looked at it with my fellow staff. Both ends of the rainbow were hanging in the ritual. Let people pass through the ritual, opposite each other, and several feet apart, like a separate sale in the middle. From the west to the east, I saw it, which was the sun. Looking east to the stream, I looked at it, and I saw it, and I saw it. I looked at it from the east to the stream, and I saw it. I looked at it from the sun, and I didn't see anything."
Chapter completed!