After many years of painting, she naturally knew when the owner of the museum could not mess with him and how long it would take to cool down.

That's why she dared to knock on the door of the main room with a pot of water when she was approaching her. After entering the room, she hurriedly closed the door.

At this time, Fan Huashi had neither handled official duties nor read books, and was just staring blankly with his hair on his back.

It seems that I am really angry to waste my time.

Shu Zuo took the opportunity to pour water and asked: "The owner... the latest question... it seems that it is not a mathematical problem... why don't I understand it very much..."

"What you understand will naturally understand, but what you don't understand will not need to understand." Fan Huashi said in a daze, "It's me that shouldn't be... it's me that shouldn't be..."

"What shouldn't be?"

"I shouldn't have written down that question." She said, as if she regretted it, she wanted to help the slap, "Pick it...Pick it..."

Shu Zuo had never seen the owner like this before, so he asked in a panic: "The owner is afraid... that person really answered the third question, do you have to fulfill the contract?"

"No...I'm afraid he can't answer...going astray..." Fan Huashi said, with a thin sweat on his forehead, "Those who shouldn't have asked this question...they shouldn't have asked..."

"This... the owner wants him to answer or not?"

"Of course I want to...but..." Fan Huashi Meng said together, "No... it's better to pick it."

Shu Zuo stroked her and sat down, and advised him: "Since the owner wants to know the answer, why not let this person answer? Just thinking about mathematics and physics. I really don't understand how to go astray, but since the owner has this concern, what will we pick it tomorrow?"

"..." Fan Huashi pondered for a moment, and only smiled bitterly, "Forget it, he has been in the library for so long, and it should be time to find that."

"What?" Shuzuo asked in confusion.

"Nothing." Fan Huashi only grabbed Shu's left arm and said, "You are the first to come tomorrow morning. Whether you have any answers or not, you will immediately remove the question."

"Yes." Shu Zuo nodded steadily and then put down the pot. "For two consecutive days... The owner of the library, the answerer, is probably the only one in the library?"

"Yes." Fan Huashi sorted out and took a sip of water before he calmed down his mind. "This person was just learning mathematics and physics, so he solved two problems in a row. He was very good at thinking, but Siye was instructed before. I knew it well and didn't say anything."

"Oh, Zhu Qi just asked me why the library is always locked and not allowed to enter recently... I just said that it was the arrangement above, and it was impossible to hide it. I started to say that there were ghosts in the library and the problem was solved every night..."

"Let him be quiet for a day." Fan Huashi then got up and opened the side window, breathed a sigh of relief, and he calmed down.

Shu Zuo asked again: "Since the owner knows which bachelor is giving the answer, why not meet at first?"

"I've seen it." Fan Hua stood in front of the window, closed his eyes and said, "It's better to know each other through mathematics and physics than to speak."

"How did the owner know him?" Shu Zuo asked.

"It is true that you can speak and think well, but your mind is not good." Fan Hua replied casually.

"Hehe, how can we break our minds even if we don't see each other?" Shu Zuo smiled, "The owner is afraid that he has forgotten. The person who answered the second question can be with you...hehe..."

Fan Huashi suddenly turned his head and said with his back: "He doesn't know this rule, so he only counts people in the Moguan, and outsiders don't count."

"Okay~ Anyway, the final explanation is the owner~" Shu Zuo turned around and wanted to leave.

"By the way, don't tell him the reward for solving problems."

"Don't say, don't say~"

...

For Tan Ying, once he indulged, time always passes quickly.

Before I could finish scanning a few books, the bell at noon had already rang.

Shu Zuo came on time as he agreed yesterday.

"Sister is so punctual." Tan Ying smiled and put down the book in her hand.

"Hmph, I'll tell you that it's not good to be so rude to the owner." Shu Zun locked the door and walked forward quickly, pretending to be angry, "The owner has a problem waiting for you this time!"

"Haha." Tan Ying laughed,

"It seems that I have ruled out one round and found that I can only answer."

Shu Zuo smiled helplessly and then put on a plate: "You are really smart. After reading these books on Xu Mathematical Science, you answered such questions. You have to accept it."

"It's just a lucky one." Tan Ying grabbed the quick one and said, "When there is no one at night, I'll go and see it for a while. The third question is."

"You two are really weird." Shu Zuo put the plate, put his arms on the table, and held his chin and said, "It's been so long, I won't see you."

"I've seen it." Tan Ying pursed her lips, "It's better to know each other by mathematics than by boring words."

"Ah..." Shu Zuo felt that he had heard this, so he asked, "Then how did you know the owner?"

"It's true that mathematics and physics are correct, but it's different, and it's still agitated."

"It's actually very accurate..."

"Okay, I'm going to start asking questions." Tan Ying chewed the rice and raised her eyebrows slightly, "Are you ready?"

"Okay... OK..."

For some reason, Shuzuo looked at his expression and felt a sense of fear...

As it turned out, her fear was right. For the next whole hour, she realized what learning torture was.

Tan Ying did not raise specific questions like the museum owner, but instead discussed axioms and relationships throughout the process.

It’s all overly basic problems, but it makes people dizzy when they think about it.

He would ask whether the pi in the book is measured or calculated, how the pi is measured, and how it is calculated.

He would ask which formulas were "just specified" and which ones were "derived".

He would also ask how to express a number to the power of 1/2 and whether there is some transformation between geometry and equations.

The Shu Zuo has limited knowledge, so he can only do his best.

The only good news, or the biggest bad news, is.

In the end, many such questions point to a specific broken chapter.

There is not even half of this broken seal.

It's not that there is no first half or second half.

But it was physically torn apart from the upper left to the lower right, and was slanted and disappeared halfway.

What the Tangying showed was exactly the half that had been torn off and had no plaque.

He had just put together one by one by one, and he could barely piece more than ten pages.

The whole process is like treasure hunting. There is a piece in this book, and a piece hidden in that corner, and it is a piece of "The Green Mountains of Stranglethorn Valley" here.

The reason why Tan Ying collects and pieces together with relish is that just looking at any half of the page is enough to be fascinated.

It is said to be a broken chapter, and the content is also hand-painted, so it should be called a manuscript.

It is precisely because it is a manuscript that the content is extremely scattered, with only many formulas and graphics, without any annotations.

For example, the most complete fragment is a triangle composed of numbers.

The first line at the top of the triangle is 1.

The second line is 1,1.

The third line is 1, 2, 1.

Four: 1, 3, 3, 1

Five: 1, 4, 6, 4, 1

6:1,5,10,10,5,1

And so on, a standard, endless pyramid of numbers is formed.

To the Book Left, she just instinctively realized that the triangle was beautiful.

But Tan Ying was shocked at first sight. Isn’t this the Pascal Triangle?

The rules of this triangle are easy to summarize: each number is equal to the sum of two numbers above it.

It is useless on the surface, but just a simple and beautiful thing.

But if you expand (1+x)?, you will find that for any positive integer n, the coefficients of the expansion form are perfectly corresponding to the n+1th row of the triangle.

For example, (1+x)3=1+3x+3x2+1x3, it perfectly corresponds to the 4th line of the triangle: 1, 3, 3, 1.

In the words of a math teacher, this is a geometric arrangement of binomial coefficients in a triangle.

Unfortunately, although the mainstream mathematical community calls it the Pascal Triangle, in fact, this figure was first independently proposed by Jia Xian of the Northern Song Dynasty in "Release of Locks", and later recorded by Yang Hui of the Southern Song Dynasty in "Detailed Explanation of Nine Chapters Algorithm", so it is called the Yang Hui Triangle or Jia Xian Triangle in China.

Although the two predecessors were several centuries earlier than Pascal in time, they did not spur any of them at that time.

On the contrary, Newton developed a masterpiece like the binomial theorem based on the Pascal triangle.

Now, this triangle can appear earlier.

The countless seeds of wisdom are just lacking the soil of an era.

In the library, the more I read the left book, the more I can’t understand it, but I also think the author of this letter is more powerful.

Unlike those calculations that have been described in a lot, there is only a combination of figures and numbers, and there is no explanation.

Even if it is incomplete, it is still so beautiful.
To be continued...