Datang: Only by resisting the decree can we become stronger

Hastily left from the Ministry of Rites and rushed back to Furong Garden.

On the other side, within the Hibiscus Garden.

Li Shimin and Changsun Wuji, accompanied by everyone in Furong Garden, were inspecting the Datang Library.

And here, stop and stay, watching a large-scale instrument that many people are making here.

As soon as he saw Li Shimin in a yellow robe, he arrived in person.

Li Chunfeng and others who were busy here hurriedly stepped forward to bow down.

At this time, Li Shimin waved his hand.

"You are all free."

"I see that what you are building is the same observatory as the one on the altar in Chang'an City?"

Li Chunfeng bowed respectfully at this moment and replied: "Reporting to Your Majesty, what is built here is the Observation Instrument."

"It's just that the Lingtai Houyi in the city only has the equator, and the system is too careless."

"The sky observatory here is quite different from the ones in the city. It is much more perfect and precise."

Hearing this, Li Shimin was slightly surprised and asked: "Oh?"

"Then tell me why the Lingtai waiting ceremony in the city is too careless."

"And what's so good about this one you're building?"

Li Chunfeng has been living in seclusion in the mountains with his master.

The first 30 years were basically practicing.

Very little contact with world affairs.

I'm not very good at dealing with the world.

Like Li Qiu, it can be regarded as a wonderful flower.

So when Li Shimin asked him, Li Chunfeng, who was unavoidably nervous, didn't think too much, and replied truthfully: "Report to Your Majesty."

"Back then when Shun was at Suiji Yuheng, he used Qi Qizheng, so the armillary sphere was also."

"There is a saying in "Zhou Li" that Tugui is looking for the sun to see the middle of the earth, and there is also the experience of seeing the sun traveling in the zodiac."

"Cum on the weekend, this device is dead."

"Han Luo Xia Hong made the armillary sphere, and then Jia Kui and Zhang Heng also had it, and they tested the Qiyao and followed the equator."

"According to the winter solstice to the extreme south, summer solstice to the extreme north, and the equator is always fixed in the middle, the country has no difference between the north and the south, and the armillary sphere has no ecliptic for a long time."

"Yi, the exterior and interior are triple, the bottom is based on the standard base, the top is like a cross, and the end is tree-shaped feet, with four tables."

"One is called Liuheyi, which has double gauges of the heavenly scriptures, the golden weft gauges, and the golden routines combined in the four poles."

"There are 28 mansions, ten days, and twelve celestial days, and the latitude and longitude are 360 ​​and [-] degrees."

"The second is the three celestial instruments, with a diameter of eight feet, and there are Jiji rules. The daily tour of the Tiansu rules, the list of the places to go, and turn within the Liuhe."

"Three is the four-way instrument, the round pivot is used as the axis, and the rules are connected by connecting the jade balance and the tour tube."

"And the Xuanji tree is the north star, the south moment of the earth's axis is turned inside, the jade balance is between the Xuanshu, and you travel north and south, look up at the celestial constellation of the sky, and use the sundial of the instrument of knowledge..."

"After the construction of the Datang Library was completed."

"My prince wants to build in front of this library square, so as to highlight the heritage and temperament of Datang Library."

"So, under Caomin's suggestion, this more accurate armillary zodiac instrument was constructed."

As the saying goes, once an expert makes a move, he will know if there is one.

Just from Li Chunfeng's remarks, Li Shimin can conclude that the young Taoist priest in blue-gray robes is in front of him.

He is a rare talent who is proficient in ancient and modern times, knows astronomy from the top and geography from the bottom, and is proficient in arithmetic.

In ancient times, wanting to be a famous Taoist priest was far from easy as imagined.

An excellent Taoist priest is himself an astronomer, mathematician, and psychologist.

And it's interesting that in ancient times, many disciplines were based on Taoism.

Just like Sun Simiao, although he is a miracle doctor and king of medicine.

But in essence, he is also an excellent Taoist priest.

And you can see that many mathematical works in ancient times were also written by Taoist priests.

At this time, Li Shimin took another look at the cloudy sky zodiac instrument built on the square of Datang Academy.

Then he asked: "I heard that there are two great priests in Li Qiu's Furong Garden."

"One old and one young, two masters and apprentices."

"Then are you Yuan Tiangang or Li Chunfeng?"

Hearing that Li Shimin knew his name, Li Chunfeng was also shocked.

"Reporting to Your Majesty, the Caomin is Li Chunfeng."

"Yuan Tiangang is the teacher of the grass-roots family."

Li Shimin nodded.

"I didn't expect you to be so proficient in astronomy and arithmetic at the age of thirty."

"In terms of knowledge, it is no less inferior to Qin Tianjian in the palace."

"Then I would like to test you. In Chang'an City, there is nothing but this Lingtai Observatory."

"Are there any other aspects that are not perfect and need to be improved?"

Chapter 774 Why Is This Kid So Generous Suddenly?

Hearing Li Shimin's question, Li Chunfeng is also honest.

Immediately said without thinking: "Your Majesty will sacrifice to heaven in the outskirts of the city tomorrow."

"Our current "Wuyin Calendar" uses Guihai as the new day."

"The ancient calendar divides the date at the half of the Zi hour. This year, the morning of Jiazi Shuo is spring."

"However, the former Taishi ordered Fu Renjun to subtract a little more time, and the first moment of Zishi is the new moon."

"So there is a difference of three quarters, which violates the emperor Zhengshuo stipulated by the Zhou Dynasty."

"Cao Min thinks that it seems that it can be re-examined."

At this moment, Li Qiu finally rushed back.

As soon as he saw him, Li Shimin said with deep meaning in his eyes and words: "Li Qiu, you really have a lot of talents in this Furong Garden."

"The deduction and correction of the season is more accurate than my Taishi Ling of the Tang Dynasty."

"Especially the armillary sky zodiac instrument you built here is far better than the celestial observatory at Lingtai in the imperial city."

Hearing this, Li Qiu hurriedly smiled and bowed to explain.

"Your Majesty, look at the plaque of the Datang Library, which was bestowed upon you by Your Majesty."

"The position of curator is also held by Your Majesty yourself."

"So it doesn't matter if it's the Tang Library, or the armillary zodiac instrument in front of the library."

"It is also owned by Your Majesty in name."

"I, Furongyuan, are just doing my best to contribute my own strength to His Majesty and the imperial court."

Li Shimin glanced at him at this moment, and then snorted softly.

"You're the one with the glib tongue."

"Do you know that it is a big taboo for important officials in the court to make friends with warlocks?"

"You are the right servant of Shangshu, and you are the governor of Youzhou with a heavy army in your hand."

"Now in your Hibiscus Garden, there are two rare alchemists in the world."

"Do you know how serious this matter is?"

"Do you know how high the notebooks about your warlocks have been piled up in my imperial study?"

Upon hearing Li Shimin's words, the expressions of all the people around changed drastically.

Silent as a cicada.

Only Li Qiu looked quite calm.

With his familiarity with Li Shimin, he could feel it faintly.

Don't look at the serious tone of the Holy Majesty at the moment, but the situation is not really serious.

Otherwise, His Majesty would not have gone to the Furong Garden to mention this matter.

And looking at Changsun Wuji's calm face, Li Qiu felt more at ease.

Afterwards, he bowed and said, "Your Majesty, you have seen this Li Chunfeng now."

"Although he eats and lives in my Furong Garden, what he does every day."

"Either lead someone to build this armillary sky zodiac instrument."

"Or follow Linghu Defen and other adults to compile ancient books in the Tang Library."

"Especially in books such as arithmetic, it has made considerable contributions."

"So this Li Chunfeng has actually been doing things for Your Majesty all along."

Seeing him making sophistry, Li Shimin just planned to increase his expression and beat him further.

Unexpectedly, Li Qiu over there unexpectedly took a 180-degree turn.

"However, when His Majesty reprimanded the minister just now, the minister was indeed negligent."

"He should be punished."

"In the Hibiscus Garden, besides Li Chunfeng, there also lives his master Yuan Tiangang."

"Li Chunfeng is only [-] years old, and his studies are not yet advanced."

"And most of them dabble in astronomy, arithmetic, and the study of things."

"But his master, Yuan Tiangang, is indeed superb and has the ability to calculate magically."

"The last time I was attacked at night in Furong Garden, it was Yuan Tiangang who calculated it in advance."

"That's the way to avoid bigger losses."

"At the same time, he is quite proficient in health preservation and life extension."

"He is now over a hundred years old."

"Therefore, I recommend this Yuan Tiangang to the Qin Tianjian to His Majesty."

"In the future, I can be at your Majesty's disposal at any time and answer your Majesty's questions."

"As for Li Chunfeng, I recommended him to serve in the Taishi Bureau."

"But the main thing is to stay in the Great Tang Library, and continue to be responsible for the construction of the Zodiac Instrument."

"And the compilation of various ancient books in the library."

In fact, Li Shimin came today mainly to meet Yuan Tiangang.

After the Furong Garden was attacked last time, Li Shimin noticed Yuan Tiangang.

At the same time, about Yuan Tiangang's past with Wang Gui, Wei Ting, and Du Yan.

He had also heard of it.

So today happened to have time, and Li Shimin thought about this again because of several memorials about Li Qiu's support for warlocks.

So I brought Zhangsun Wuji together and came here to have a look.

In the past, the imperial court tabooed making friends with important officials, generals and alchemists in the court, mainly because they were worried that they would have disobedience.

There is no intention of rebellion.