Lin'an Mansion, inside the Imperial Palace. Pen, fun, and www.biquge.info

The imperial city of the Southern Song Dynasty was renovated on the basis of the original government office, creating a pattern of Nangong and North City, which is unique to Chinese history, with the imperial palace in the south and the residents in the north.

China has always paid attention to sitting in the north and facing south, and throughout Chinese history, the imperial palace is either the north palace facing south, such as Chang'an, or it is located in the center and dominates the four directions, such as Beijing.

The explanation given by the two governments is that it is to show the determination of the imperial court to recover the north, so the palace faces the north. Of course, this is a nonsense explanation, the fundamental reason is that the original government was built in this way, and the officials did not want to expand the imperial city.

The successive emperors of the Southern Song Dynasty all wanted to expand and rebuild, but they were blocked by the two governments, saying that they were afraid of arousing public resentment and damaging the holy hearing. However, this is another nonsense reason, the whole world is not the king's land, the emperor will really care about a few words of public grievances, and these emperors of the Southern Song Dynasty are not like the legendary Tang Taizong who loves the people like sons, and puts the people before the country, not to mention whether Li Shimin has such feelings and temperament, the ghost knows. The real reason is because most of the shops and courtyards around the palace are high-ranking officials and dignitaries, and Lin'an City is close to the imperial city, and those shops and courtyards are even more priceless, so he tried his best to prevent the emperor from expanding the palace.

Therefore, the imperial palace of the Southern Song Dynasty in the history of China seems to be so nondescript, which also reflects from the one hand that the concept of the emperor and the scholars ruling the world together has been deeply rooted in the hearts of the people, and the emperor cannot come casually. This also made the political situation and power of the Southern Song Dynasty emerge in an endless stream, and the slightly weaker emperors had no way to restrain them, and at the end of the Southern Song Dynasty, there was a situation where they did not speak for themselves.

The imperial palace of the Southern Song Dynasty is called the Great Interior, although it is the smallest palace in the past dynasties, it seems a little shabby, but the fifth emperor of the Southern Song Dynasty, Zhao Yun, does not feel that compared to the broken courtyard where he used to live, it is much larger and more luxurious.

Zhao Yun is the blood of Taizu, he was already very estranged from the royal bloodline, his father did not have any titles, and his life was no different from that of a commoner, but he was suddenly made emperor by Shi Miyuan four years ago.

Zhao Yun is a very mediocre person, and his IQ is also at an average level, but he also understands why Shi Miyuan chose him as the emperor, he was poor and white before, and he had no desire for power, so even if he became the emperor and alienated from power, he would not have any complaints if he was completely overlooked by Shi Miyuan.

For myself, it is enough to have a better house to live in and better meals to eat, so I don't care about government affairs at all. Kindness, simplicity These natures have not completely disappeared from his blood, and he has not yet become a cold genius.

Today, Ma Defang came back with a decree, saying that the little Taoist named Zhao Zheng gave him a gift, about Zhao Zheng He heard Shi Miyuan occasionally mention it, I heard that he is a disciple of a master of Taoism, although he is young, but his wisdom should not be underestimated. He and his master brought three miraculous things to the Great Song Dynasty, one mu can produce more than 2,000 catties of grain, and can solve the problem of eating for all people.

Zhao Yun was not a rich child when he was a child, so he naturally knew the meaning of this thing, and he couldn't help but respect that team of masters and apprentices in his heart, not to mention that he had been interested in Taoism since he was a child, so there was a letter written by Zhao Zheng to him in the box.

There were only a few lines on the letter: The emperor should pay attention to his health and always remember to wash his hands with soap.

The words on it are written in pencil, in the vernacular, like a friend mentioning it in his ear.

Zhao Yun smiled knowingly: "Interesting little Taoist." ”

――

Before the end of March, Zhao Zheng was discussing the improvement of technology with several craftsmen in the glass workshop in secret, and suddenly there was a loud voice outside the door.

"Zhao Zheng, Zhao Zheng, I'll bring someone to show you."

When Zhao Zheng heard the voice, he seemed to be suddenly splashed with a scoop of cold water in his sleep, and he woke up in a flash.

Yan Tianwu, what is that woman doing? Zhao Zheng subconsciously regarded a ten-year-old girl as a woman in his heart, indicating that the two are currently equal in mentality.

Zhao Zheng came out unkempt and saw a middle-aged scribe standing behind Yan Tianwu, dressed in white fluttering, a little extraordinary.

Before Zhao Zheng could speak, the man stood up first: "Under Li Ye, the word Renqing." I heard Sixth Sister Yan say that you have studied arithmetic quite deeply, so I came to ask for advice. ”

Zhao Zheng didn't think much about it, and now he got out of his body, a little apologetic: "Brother Li, I have something to do now, and I am at a critical point, you go to my house first, and after I finish dealing with it, I will make amends to you." ”

"What's the matter? It's so dirty. While speaking, Yan Tianwu ignored Zhao Zheng's dirtiness and asked Zhao Zheng with his shoulders on his back.

Li Ye saw that Yan Tianwu was so disregarding the defense of men and women, and coughed lightly.

Yan Tianwu looked at Li Ye with a disdainful look: "Teacher, I'm only eleven years old." ”

Li Ye couldn't help but have a headache when he looked at his student: "You have turned twelve years old, and you can get married in another year." Besides, can you do it lightly, my stamina still hurts. ”

Yan Tianwu stuck out his tongue: "I'm sorry, teacher, who told you to be so cowardly and dare not come to Guangzhou." ”

When Zhao Zheng heard this, he couldn't help but break out in a cold sweat, this crazy girl shouldn't have tied his teacher here, right? But according to her character, maybe it is. Zhao Zheng asked casually: "You didn't kidnap your teacher, did you?" ”

Yan Tianwu smiled shyly.

"This scoundrel!" Zhao Zheng and Li Ye scolded almost at the same time in their hearts.

"You didn't bring any money last time, how did you get back?" Zhao Zheng couldn't help but wonder a little at this time.

Yan Tianwu smiled proudly: "Of course they are all borrowed, don't worry, I have returned the money twice as much as this time when I went south." Rest assured, those who are looking for are all from big families. ”

When Zhao Zheng heard the "big family", he already knew what kind of means Yan Tianwu relied on.

Li Ye also heard it for the first time, not only was he a little dumbfounded: "Liuniang, you, you, you are just messing around on weekdays, how can you do such a hurtful thing." Don't do whatever you want by force. ”

Yan Tianwu knew that the disaster came from his mouth at this time, and glared at Zhao Zheng viciously, meaning that he wanted you Zhao Zheng to ask these questions. Then he pretended to be obedient to you, and tears flowed down his eyes, and he peeled off the placket behind his back, revealing blood stains.

"The last time the apprentice went home too late, he was punished by his father, and the scars have not gone away, and if the apprentice goes a few days late, he will not be killed. You can't let me beg to go home, and that's all I have to do in this extraordinary time. ”

Li Ye was also shocked when he saw the scars on Yan Tianwu's back: "How can you be so ruthless." ”

When Zhao Zheng saw it, he also felt that some words were blocked in his mouth and he couldn't say it, and finally only held back the three words: "I'm sorry".

Yan Tianwu quickly gave Zhao Zheng a kick after hearing this, so fast that Li Ye didn't even notice it.

Zhao Zheng had some understanding: "Master Li, I'll take you back to the house and wash the dust for you." ”

――

"Xiao Dao Chief, your Tianyuan technique is subtle and abnormal. I just don't know why you use the symbol "Ex" to represent the unknown. ”

Tian Yuan Shu is a method of using unknown numbers to set equations, and Li Ye's mathematical and logical qualities have impressed Zhao Zheng, which is higher than the vast majority of people in the era.

"This is a kind of Western writing, for the sake of convenience, it is used as a sign, for the convenience of writing, that's all. It can also be replaced with the rhythm of the rhyme book as an unknown symbol. ”

"According to the simplification of this symbol, the calculation is certainly convenient and abnormal, and there are some things that I couldn't figure out before, but now I have some vague ideas."

"For example?" It was rare for someone to discuss some mathematical problems with him, and Zhao Zheng was naturally a little excited.

In fact, with the development of technology in the Song Dynasty, mathematics has seriously restricted its development, and the lack of mathematical tools in the construction of bridges, roofs, mountain height, area, etc., has brought a serious lag to the progress of these technologies.

For example, the power of simple numbers, do not know how to use a unified representation of the power of different times of unknowns, in this era of some mathematical works there is such a record: "with nineteen characters to know its upper and lower layers, said immortal, bright, xiao, Han, base, layer, high, up, heaven, man, earth, down, low, decrease, fall, passing, spring, dark, ghost." ”

That is to say, the word "person" is used to represent constants, and the above nine characters represent the positive powers of unknown numbers (the highest is nine times), and the following nine characters represent the negative powers of unknown numbers, and the lowest is also nine times, which shows the complexity of its operations.

The discussion between Li Ye and Zhao Zheng changed unilaterally to Zhao Zheng's explanation over time, because Li Ye had not received his own mathematics education before, he still did not understand many terms, and Yan Tianwu needed to explain on the side.

The more Zhao Zheng spoke, the more excited he became, and before he knew it, he was already white.

"On this day, I believe that there are people who are born to know, and the Taoist has learned all his life, and I dare to ask who learned from there." Li Ye was convinced, and Zhao Zheng couldn't help but solve some of the doubts in his heart for many years, and also introduced him to a broader world of mathematics.

"My master taught, my master is an immortal in the world, for the sake of the world, go down to save the world. But I am also afraid of God's damnation, so you must not mention anything about learning in my master's fame. Even if he asked, he would pretend not to know. ”

"Is that so?" Li Ye couldn't believe it.

Yan Tianwu came out to endorse Zhao Zheng: "I told you all the way, but you still don't believe it." Zhao Zheng is not the first person in ancient and modern times in this arithmetic science. ”

Li Ye also bowed his head and gestured: "When Liuniang went home last year and discussed math problems with me, I was surprised, some places are even more advanced than me, although this child is extremely intelligent, but it is impossible for his knowledge to improve by leaps and bounds, so I asked her where she learned it, and she told me about you." I didn't believe that a child was so knowledgeable, but who knew that Liuniang was so upset and forcibly got me here. Now I am convinced, the little Taoist can be called a generation of grandmasters in this arithmetic. ”

Zhao Zheng didn't even dare to say that in fact, he was still inferior to Mr. Li Ye in front of him in some professional mathematical and physical problems, so that Zhao Zheng didn't feel a little curious about who this Li Ye was.

"I made a bet with my old friend Yuan Zhizhi about this, and it seems that I said it?"

Hearing Yuan Yuzhi, Zhao Zheng was faintly familiar, in this era, why didn't Zhao Zheng specialize in the history books of this period, all those who had some talents and some backgrounds, he would remember them one by one.

"Yuan desire, Yuan desire, Yuan Hao ask?"

Li Ye was not surprised that Zhao Zheng knew the name of Yuan Haowen, who had already become famous at this time and was known as the Northern Literary Hero, which showed his status in the northern literary circle.

Since his friend is Yuan Haowen, Li Ye's identity is also about to come out, Li Ye, one of the four great mathematicians of the Southern Song Dynasty.