Su Ze suddenly thought that astronomy also has a large part of mathematics. Aren't the problems of the movement of celestial bodies just natural mathematical problems?

How about going back to Changning to build a telescope?

No, it was illegal to study astronomy privately in the Ming Dynasty.

Qin Tianjian was an internal court official in the Ming Dynasty. The so-called internal court officials were the emperor's personal ministers.

The responsibilities of the Qin Tianjian include "speculating on the seven political latitudes, latitudes and constellations, eclipses of the sun and the moon, the sight of five stars, the four seasons of the sky and compiling the calendar". At the same time, he is also "on duty to lead the astronomy students to conduct day and night inspections, and to analyze the obtained images every day."

"Report daily", and finally "calculate auspicious days, plan weddings, explore the feng shui of mountains and hills", etc. for the royal family.

Since Dong Zhongshu proposed the induction of heaven and man and tried to use prophecies of celestial phenomena to limit the imperial power, feudal rulers of all dynasties began to fight for the right to interpret celestial phenomena.

In the Ming and Qing Dynasties, centralized rule reached its peak. The Ming court had the power to interpret astrology, and Emperor Jiajing used astrology to suppress courtiers many times.

To blame the court ministers for celestial abnormalities and disasters, and to remove the court ministers through horoscope abnormalities, naturally requires the cooperation of Qin Tianjian.

Yes, telescope.

Naturally, stargazing with a telescope is not only for brushing up on mathematics. Astronomy is of great significance in navigation, navigation and positioning, map drawing, and calendar compilation. Without exception, these things are extremely critical.

People need to determine the dates of farming in the four seasons according to the calendar. The current calendar "Tatong Calendar" has not been revised for more than a hundred years, and the calendar is no longer accurate.

Of course, this is definitely not what Su Ze can do now. Privately practicing the calendar is a more serious crime than privately testing the astronomical phenomena.

You already want to revise the calendar. Should you revise "History of the Ming Dynasty" next?

However, the important role of optical astronomy in navigation positioning and nautical charting forced Su Ze to study it.

When I go back and build an observatory, I should be able to learn astronomy skills. Wouldn’t it be wonderful to study astronomy and mathematics at the same time?

Su Ze was still immersed in his blissful imagination, when Fang Ruolan opened the door and came in.

Fang Ruolan pretended to be casual and walked up to Su Ze. She took out a beautifully bound book from her sleeve and handed the book to Su Ze casually.

"Your character is too common compared to your literary talent. You may be rejected when you take the provincial examination."

"I'll lend you this copybook for a few days for copying. My family won't need it for the time being anyway."

Su Ze took it and took a look, "Yang Wenzhen's Gongchi Shou Zhengzi"?

I only saw that the characters on this copybook were square and square, each character was horizontally and vertically, neatly written, and written like woodblock printing. This was the official font required for writing in the imperial examinations of the Ming Dynasty - "Taige style".

Duke Yang Wenzhen was Yang Shiqi, a famous official in the early Ming Dynasty. He was the master of the Taige style of the Ming Dynasty, and he rose to the rank of chief minister of the cabinet.

Yang Shiqi is a master of calligraphy. Although this book is a copybook of rubbings, it is also a very precious collection of books.

Su Ze had already guessed about Fang Ruolan's identity. The only person in Yanping Mansion who was qualified to collect this book was Fang Zhifu, who was a Jinshi.

Sure enough, Su Ze turned to the back and saw a collection stamp of "Xu Yashan Ren".

Su Ze heard that after taking office as the governor, Fang Zhifu renovated the pavilion in the back house and personally inscribed "Xu Ya Pavilion". This seal must be Fang Zhifu's collection seal.

Su Ze raised his head and looked at Fang Ruolan, thanking her and saying, "Thank you Mr. Fang for the book."

"It's a borrowed book. This book is lent to you for copying. You will have to return it to me in a few days!"

After Fang Ruolan finished speaking, she picked up the calligraphy that Su Ze had just written on the table, frowned and said: "Although this reed pen is easy to use, it will easily become crooked if you write too much. You will take the county examination next year, so you have to practice hard.

right."

Su Ze didn't care about Fang Ruolan's nagging. He naturally knew that Fang Ruolan was doing it for his own future.

A brush pen is fine for writing text, but it is not as convenient as a reed pen for writing numbers and calculations.

After the invention of the reed pen, it was basically used by the swordsmen and pen clerks in the yamen or the accountants, and was despised by mainstream literati.

After all, no matter how good you are at mathematics, you can't be an official.

Su Ze was not prepared to change Fang Ruolan's concept.

Fang Ruolan added: "I have proven the method of pushing the steps to the top!"

Fang Ruolan took out a piece of paper. It was a geometry question. She looked at Su Ze proudly.

A few days ago, Su Ze was explaining arithmetic to the children. Fang Ruolan also became interested and listened to a few sessions.

Later, when she saw Su Ze doing arithmetic problems, she started doing the math too.

Fang Ruolan is indeed talented and intelligent. She quickly mastered Professor Su Ze's mathematical symbols and was able to solve the problems that Su Ze left for the children.

After discovering the joy of arithmetic, Fang Ruolan began to beg Su Ze to give her questions.

The push-to-top method that can measure land, also known as Gauss's shoelace theorem, is the mathematical formula that Fang Ruolan is most interested in. After Su Ze threw a bunch of basic mathematical formulas at her, she actually derived the formula abruptly.

Fang Ruolan had a "praise me" expression all over her face, and Su Ze praised: "Young Master Fang is really talented in arithmetic!"

Fang Ruolan raised her head proudly, and Su Ze wrote another question casually: "I have another question, does it count?"

Fang Ruolan thought about the days when she stayed up late to do math problems, but she had a temper that refused to admit defeat.

She immediately said: "Forget it!"
Chapter completed!