Xiaobao smiled: "If the master doesn't say it, my mother won't know." ”

Song Yunshu was also helpless, he stayed well in the palace, but he fell in love with Su Qingfeng here, and he didn't know what this master had done, and he couldn't call him back.

Su Qingfeng was chatting happily with Xiaobao in the courtyard, and at this time, someone came up and said that Lord Song was here.

Su Qingfeng got up and prepared to greet him, Xiaobao immediately ran behind Su Qingfeng to seek protection, Su Qingfeng smiled helplessly, but Xiaobao was rarely naïve, so they indulged.

It's only been a short time since he left, and he must have come here for Xiaobao's business, and Song Yunshu felt that what he should be looking for most was Chu Yuchen, his son couldn't help running around, so he was busy.

Su Qingfeng went up and smiled: "Lord Song, do you like me here?" ”

"Su Gongzi is just joking, it's rare for me to come once, when you say this, I thought I was complaining!"

Song Yunshu knows what kind of virtue he is, it is not for nothing that Xiaobao is always here, it is estimated that he has been with the master for a long time, is the relationship about to surpass her mother-in-law?

As soon as Xiaobao saw Song Yunshu, his whole head was buried on Su Qingfeng's back, but he refused to give birth.

"Okay, Xiaobao, don't hide, my mother has already seen you, come out quickly, I brought a gift." Song Yunshu deliberately shook the book in his hand, and deliberately pointed his name towards the master and apprentice.

"Lord Song, don't move!" Su Qingfeng suddenly stared at Song Yunshu with a blazing eye.

"Mother, show me the book in your hand, I seem to have seen the book I have been thinking about." Xiaobao ran out excitedly, hugged Song Yunshu's thigh, raised his head, and looked at her cutely.

Looking at her son with this appearance, Song Yunshu's heart was about to melt, and she handed the book to Xiaobao.

"Take it and read it, this book is the one you have in mind, and it was given by the old prime minister, and I don't know where he got the news."

Song Yunshu was puzzled and knew at the same time that this must be Lao Cheng's response to her, nominally it was given by the prime minister's wife, but in fact, he still had the final say.

Su Qingfeng was also very interested, but he couldn't grab books from his apprentices, anyway, Xiaobao still had to ask him if he didn't understand anything, and the books would come to him in the end.

"This book must be hard to come by, Xiaobao, you have to cherish it, if you don't understand something, ask me."

Looking at the communication between Su Qingfeng and Xiaobao, Song Yunshu couldn't help but think of Chu Yuchen.

Chu Yuchen left the capital to prepare for the upcoming royal hunt.

Song Yunshu knew that the royal hunt, which seemed to be an activity for the royal people to show off their might, actually had more political significance.

They were not so idle, so they took the mighty people to the mountains in order to hunt two rabbits.

Although Song Yunshu is engaged in economics and is not very interested in politics and military affairs, he can also casually say a few meanings.

For example, to show one's military abilities to foreign enemies, for example, to take the opportunity to select excellent generals, and for example, to show civilians the majesty of the royal family, etc., etc.

So she didn't have any opinions in her heart, although she felt that it was a bit of a waste of money, but it was also a way to show her strength.

She was just a little puzzled, how did the matter of preparing for the hunt fall on Chu Yuchen?

It is true that he is the leader of the troops, but he is the king of Mu and the god of war!

To open the way for hunting, in fact, it is to take people to arrange the palace inside, and drive the fierce beasts to a fixed area - showing strength is a show of strength, and it is not good to hurt those royal relatives. Is the God of War himself appearing for such a job?

Song Yunshu couldn't help muttering in his heart: This god of war is too unrelenting.

However, the emperor gave orders, and it was useless for her to murmur in her heart, so she could only stay in Kyoto.

She is no different from being in her own palace now, and everyone in the palace regards her as the master.

Song Yunshu's mind was about to fly, and suddenly he heard Xiaobao ask Su Qingfeng with great interest: "Master, why does the compass point to the south?" ”

Compass, compass in ancient times. At this time, people discovered some laws of magnetism and magnetism, but they did not know the principle.

When Song Yunshu entered the room, he saw that at the desk by the window, Xiaobao was holding a compass and tilted his head to look at Su Qingfeng with curiosity.

He didn't expect that Su Qingfeng didn't know this principle at all, and waited for Su Qingfeng's answer.

Su Qingfeng paused and said with a smile: "It's born like this, where is why?" ”

"Born that way?" Xiaobao scratched his head and turned the compass in his hand, still puzzled, "Why is it born like this?" Why not point to the north? ”

This made Su Qingfeng pause, and he didn't know how to answer.

"Xiaobao." Song Yunshu covered her mouth and chuckled, she rarely saw this No. 1 talent in Jiangnan with such a confused and helpless look.

"Mother, tell me!" Xiaobao suddenly looked at Song Yunshu.

Song Yunshu rubbed the top of Xiaobao's hair, and asked softly, "Are you embarrassed by Master Su again?" ”

Xiaobao shook his little head and explained in a loud voice: "I'm useless, I just want to know why the compass points to the south?" ”

Su Qingfeng got up and saluted, with a look of shame: "It's because I'm shallow in knowledge, and I don't know how to answer Xiaobao." ”

"It has nothing to do with knowledge." Song Yunshu hooked the corners of his mouth, "I'm afraid there are not many people in this world who can know." ”

She squatted down, looked at Xiaobao's dark and intelligent eyes full of curiosity, and asked, "Do you know what the compass is made of?" ”

Xiao Bao nodded again and again and said, "I know, this master just told me." The main magnetic needle of the compass, the magnetic needle is made of magnets. ”

"What's the matter with the magnet?"

"Stone is the mother of iron, if you are a loving mother, you can attract children, if you are not kind, you cannot attract your own children." Xiaobao said word by word, "There is a magnet on the mountain, and there is gold and copper under it." ”

This is a concept that arose in ancient times when people did not have a clear understanding of magnets, so in the beginning, magnetism was written as 'compassion'.

This Song Yunshu saw it when he was reading the encyclopedia, they didn't know the relationship between the magnetic field and the magnet, but they discovered the law of this phenomenon and finally made a compass.

Song Yunshu tried his best to explain to Xiaobao in easy-to-understand language: "Since their magnet will attract iron, it means that there is a force between them, so parents use children to make them attract each other." ”

"This force can be called 'emotion' or 'blood'. We can't see them, but they do exist, right? ”

Xiaobao thought for a while, and finally nodded: "Yes, I like my mother and want to be with my mother." Like invisible, but true. ”

"That's it." Song Yunshu continued, "Then can you see the earth as a parent, and this magnetic needle as a child. ”

"There is also a force between them that attracts the magnetic needle to the south. Although invisible, they do exist. It's like a child who sees his parents and will always unconsciously face his parents. ”