please make me king

It is said that Wang Zheng's lie was exposed by Zhang Shun, and he was immediately ashamed.

However, after he stabilized his mind, he still said, "It is thousands of miles away from me in the west, and the calculations are incomplete", "The weights and measures are not the same as those in China, and the conversions are wrong" and so on.

Zhang Shun is too familiar with this, and he used the same excuse when his teacher checked him when he didn't finish his homework.

However, he did not intend to expose Wang Zheng.

For one thing, in Zhang Shun's previous life, the "Western Law" was able to develop and grow, crushing other civilizations in one fell swoop, which naturally had its advantages.

Second, science will inevitably develop because of exchanges, and fall behind because of isolation.

Zhang Shun is not so arrogant that he can lead the world into a new era with his own strength.

Three, Zhang Shun also intends to take the opportunity to find out which places in China in this era are relatively backward and which places are relatively advanced, so that he can use it as a reference for his next policy.

Thinking of this, he couldn't help laughing and said: "In short, it is not a solution after all to say that the public is right, and that the woman is right."

"Well, let me give you a little time first, you prepare the content of your related theories, and let me hear which one makes sense!"

"Ah? Good, this is good!" Wang Zheng was taken aback when he heard this, and quickly replied.

As an expert who wrote "Illustration of the Far West Qiqi", he certainly knows the importance of actual verification.

However, Xifa's results in the previous competition with Qin Tianjian and Dongju were quite ugly. Now that Xu Guangqi is dead, Xifa's party is becoming more and more deserted, which makes him stop thinking about competing with the other two bureaus through checking calculations.

As for explaining and bragging, this is what missionaries are good at, and Wang Zheng is still very confident about this.

However, something went wrong, he hastily said: "Since Yuanxi and I don't understand the language, there are many words that do not express the meaning."

"Your Majesty, please allow me a few days before explaining it to Your Majesty in detail."

"Easy to say, easy to say, let's go like this. I'll ask Qin Tianjian and Dong Bureau for their opinions first. If they don't have any opinions, let's start with them first!" Zhang Shun chuckled, pretending not to know what Wang Zheng was thinking, and directly He agreed immediately.

You want to avoid "checking", how is this possible?

Let me first feel the truth and reality before making any calculations.

Zhang Shun made up his mind, and when Wang Zheng left, he immediately ordered Zheng Ge Chengke, the inspector of the Qintian Supervisor, to make preparations and come to "lecture".

As a result, Na Ge Chengke rushed over with a copy of "Zhoubi Suanjing" after obtaining the decree.

This Ge Chengke looked only in his 30s, and was dressed in a light crimson official robe.

Because of the "changing clothes" of the new dynasty, he embroidered a few golden stars on the chest of the official robe.

""Zhou Bi Suan Jing"?" Zhang Shun looked at the title of the book he presented and almost thought he had read it wrong.

"Yes, the method of astronomy is calculation. You don't know its distance without calculation, you don't know its size without calculation, and you don't know its length without calculation!" Ge Chengke explained solemnly.

"Okay, then you continue!" Zhang Shun frowned upon hearing this, and couldn't help but ordered.

According to his previous life learning experience, it is generally not right to explain the theory first, then explain the axioms and theorems, and finally explain the calculation method, right?
What kind of teaching method are you!
"Then, let's first explain the Pythagorean Algorithm." Ge Chengke couldn't help flipping through the book.

"Yes, I have learned this!" Zhang Shun gave the order with a blank face.

"Okay, then I will talk about the heavy difference technique." Ge Chengke didn't dare to say anything, and directly turned the book over and said.

"Yes, I have learned this too!" Zhang Shun continued to order without joy or sorrow.

"Okay, then let's do the math." Ge Chengke had no choice but to close the book and said.

"The sky is high and the earth is thick?" Zhang Shun suspected that he was angry with himself, but he was not angry.

The so-called heavy difference technique is to set up a table pole, and then use the triangular proportional relationship to calculate the distance, height and size.

For example, Zhang Shun's artillery shooting table was calculated using this method, so he said confidently, "I have learned this."

Thinking of this, he couldn't help but smile and said: "Please continue the prison!"

Say I don't know the heights of the sky and the earth?I think you are ignorant!

"It is known that the shadow of the sun is one inch, and the distance between the earth and the earth is thousands of miles. Now I know that the pole is eight feet, what is the distance between the sun and the earth?" Ge Chengke, the supervisor, was not polite, and asked directly.

"Uh, it should be [-] miles, right?" This is a very simple equiproportional triangle, and Zhang Shun came up with the answer at once.

"Today, the height of the standing table is eight feet to look at the pole, and the sentence is one foot and three inches. From this point of view, how much is it from Zhoubei to the pole?" Ge Chengke smiled when he heard this, and couldn't help asking again.

The meaning of this sentence is to set up an eight-foot-long watch pole to look at the North Star, and its projection is one foot and three inches long. Find the distance from the North Pole to the North Star.

"The shadow of the sun is one inch, and the land is thousands of miles away, so the distance is one hundred and three thousand miles?" Zhang Shun said somewhat uncertainly.

"Of course, as expected, His Majesty's talent is unmatched!" Na Ge Chengke nodded in satisfaction and couldn't help complimenting him.

No, what about you cheating father?

Zhang Shun was quite self-confident when he heard the words, but after thinking about it, he immediately discovered the fallacy.

Polaris is more than a few hundred light-years away from the earth. You can calculate it to be one hundred and three thousand miles away. Are you kidding me?
Thinking of this, he couldn't help laughing and said: "Although this method is good, there are so many omissions. I'm afraid it will be a thousand miles away!"

"Your Majesty, what do you mean by that?" Ge Chengke couldn't help smiling when he heard the words, and asked back.

"Assuming this way, the ground must be like a stone, and the light must be as straight as a line to be accurate!" Zhang Shun laughed.

Brother, your assumption is wrong!
"It turns out that His Majesty already has a rough knowledge of astronomy, but it seems that this humble minister is showing off!" Na Ge Chengke smiled embarrassedly, and then replied.

"The sky is round and the earth is round. This is what Gai Tian said in the past, so there are many fallacies."

"As far as Zhang Heng is concerned, it is said that 'the sky is like a chicken. The celestial body is round like a bullet, and the earth is like a yellow chicken, living alone in the sky'. This is what Huntian said."

"As for the monks in the Tang Dynasty, they "compared with the sunlight in the north and the south, and calculated it with the Pythagorean method". They traveled all over the north and south, and then measured "the maximum rate is 350 miles and eighty steps, and the extreme difference is one degree."

"It is also calculated that 'the north and south poles are [-] miles apart, and their diameter is [-] miles', which is the thickness of the ground!"

"Wait, wait, wait for me to figure it out!" Zhang Shun always felt something was wrong when he heard this.

There is a poem in the previous life called "Sitting on the ground and traveling [-] miles a day", which means that the circumference of the earth's equator should be about [-] miles.

Having been in this life for so many years, Zhang Shun probably also noticed that the Yili of this era is almost the same as that of later generations.

That being the case, the distance between the North and South Poles should be about [-] miles, how could it be more than [-] miles?

After he took the pen and paper, he did a little calculation, but found that if the "extreme difference is one degree", "the maximum rate is 350 miles and eighty steps", then the distance between the north and the south should be more than 12 miles.

Leaving aside the question of whether the calculation is accurate or not, the monk and his party are contradicting themselves on this point alone.

Calculating to this point, Zhang Shun couldn't help looking at Ge Chengke again.

"Your Majesty is indeed extremely gifted. It is so easy to be overlooked by others, but you can't hide from His Majesty's scrutiny!" Na Ge Chengke first complimented Zhang Shun, and then explained with a smile.

"The former uses a new ruler, while the latter uses an old ruler, so it is self-contradictory."

"The length of today's chi is [-]% of the old chi, and the rate for one mile is [-] steps; the old chi is shorter and the rate for today's chi is [-]%; the rate of one mile is [-] steps, so the length is different!"

"Oh?" Zhang Shun first removed the slight difference between the old and the new two feet when he heard the words, and roughly calculated that two-thirds of the 12 li was exactly the number of more than [-], and he was not surprised at all.

Good guy, you guys are engaging in "technical blockade" here!

Only then did Zhang Shun believe that this guy was of a good standard, and quickly continued the discussion with him.

Originally, Zhang Shun thought that the foundation of astronomy and calendar was very simple, and he could learn it by himself.

As a result, as the discussions between the two sides gradually deepened, Ge Chengke actually slowly talked about the "sagittal technique" used in "Shou Shi Li".

The so-called "sagittal surgery" is generally about the method of arc calculation.

It turns out that since the establishment of the Huntian theory, it has been developing and changing.

At the beginning, people still had objections to the phrase "the earth is like the yellow in the chicken". Some people still think that the earth is flat or a semicircle.

But with the continuous measurement and calculation of astronomers, the conclusion that the earth is round is finally proved.

From this point of view, when performing astronomical calculations, it is natural to use the calculation method of circular arcs, and only then did the so-called "sagittal arc technique" be studied in depth.

It's just that Zhang Shun didn't expect that Ge Chengke would pull out the quadratic equation and solve it after all the calculations, only to see his eyelids twitch.

However, as Zhang Shun understood more and more deeply, he gradually understood.

Traditional Chinese astronomy is actually a discipline based on the "huntian theory" and a large number of observations and calculations.

According to Zhang Shun's understanding, the so-called "huntian theory" is actually a certain degree of geocentric theory.

Of course, due to the problem of human perspective, in fact, the astronomy of most civilizations started with the geocentric theory, which does not matter.

But traditional astronomy is extremely weird. They don't seem to be very interested in building celestial models, and they focus on making miracles with great effort.

One is a large number of observations, such as the previous monks and his party, and the later Guo Shoujing, who set up a large number of observation points from south to north, from west to east, and forcibly calculated many amazing things.

For example, the length of the meridian, and the diameter of the earth, so Chinese astronomy has long established the concept that the earth is round.

The other is hard calculation, what model is not model, what we focus on is "big data".

What eclipse is wrong?Calculate!

What lunar eclipse does not match?Still count!

Of course, there are Mercury and Venus, they all count!
Even Tang Shunzhi in the middle of the Ming Dynasty believed that the most important thing to study the calendar is "calendar" and "calendar", and the calendar includes the number of dead and alive.

The former refers to various tables, while the latter refers to various algorithms.

To put it bluntly, in a word, it still counts!

Under the guidance of this idea of ​​vigorously creating miracles, Chinese algebra has been greatly developed.

As a result, it is many years ahead of its contemporaries in Europe in terms of solving high-order equations and algebraic equations. I am afraid this is the root cause of why European missionaries have repeatedly struggled in calculations.