Early the next morning.

Yang Yansi took Cao Wei and the three little guys and entered Bianjing City noisily.

Walking through the streets and alleys, when they arrived at the gate of Taixue, the group was a little stupid.

There are too many people, and it is no longer enough to describe it, it can be said that people are crowded, and people hug people.

Yang Yansi stopped a passerby who was hurriedly about to join in.

"Brother Tai, why are there so many people today?"

"Not to mention, since the establishment of Taixue, a challenger has finally appeared, winning two games in a row. Everyone came here to see the demeanor of Yang Qigongzi, who is a master of chess and painting. Who knows, Taixue actually closed the door and didn't let everyone go in to watch the battle. So they can only block the door. ”

"I won't tell you, I have to squeeze forward a little more to see if I can meet Yang Qigongzi."

Yang Yansi was a little confused, when did he become a chess and painting master?

"Zizizi~" Cao Wei looked envious, "Brother Qilang, so many people worship you." You are even more powerful than Su Qi Niang. ”

"Who is Su Qi Niang?" Yang Yansi questioned.

Cao Wei said bluntly, "The first Oiran in Bianjing." ”

"Boom~" A chestnut knocked on Cao Wei's head, and Yang Yansi scolded and scolded: "If you don't learn well at a young age, you will be beaten." ”

The blocked water at the entrance of Taixue could not be passed, and Yang Yansi's carriage naturally could not enter.

A group of people squeezed through the crowd.

By the time he arrived at the gate of Taixue, Yang Yansi's clothes had already been twisted, and he was wrinkled and had no image of a talented man.

At the gate of Taixue, Dr. Taixue was already waiting, and when he saw Yang Yansi, he welcomed him in.

Under the leadership of Dr. Taixue, Yang Yansi and his party walked to a side hall.

In the side hall, there are not many people, but they are all characters with heads, faces and relationships.

Yang Yansi's father, Yang Ye, and several of his elder brothers have military affairs today and can't be there. So he appointed She Saihua to cheer him on.

She Saihua held the pink-carved Yang Yanqi in her arms and looked at Yang Yansi happily.

"Mother, why are you here?" Yang Yansi was also a little surprised.

She Saihua said with a smile: "The northern military affairs are busy, and your father and your brothers are busy and dizzy. When I left in the morning, I specially told my mother to come over and cheer you on. ”

In the Song Dynasty, it was difficult for ordinary women to ascend to the hall of elegance.

However, She Saihua is not an ordinary woman. In addition to the identity of the four-rank lady that Yang Ye got back for her, She Saihua herself was also a guerrilla general appointed by the emperor.

Although he is not in charge of the army, he is also a unique existence in the lady world of Bianjing City.

Yang Yanqi turned around in She Saihua's arms, faced Yang Yansi, raised his small fist, and shook it.

"Come on, Brother Seven!"

Yang Yansi scratched her nose dotingly, and said with a smile: "Let's see how Seventh Brother wins them." ”

In the middle of the side hall, Shen Lun was dressed in a long robe and white clothes, standing in the middle, on his left stood Taixue Sacrifice Wine King Qin, and on his right stood a thin young man aged twenty-seven or eighteen.

"The old man will introduce you to you, this is Chu Yan, the supervisor of Qin Tianjian, and he is also the gentleman who is responsible for assessing your arithmetic."

Under Shen Lun's introduction, Chu Yan arched his hand slightly, "Shen Xianggong invited me to come over to assess you, and I don't plan to say too many polite words." I came up with three arithmetic questions, and if you answer them, you will pass the test. ”

Yang Yansi looked at Chu Yan suspiciously.

It's too much to learn to change sex, and you don't plan to send some old monsters to embarrass yourself?

It seems that Shen Lun is quite fair as the host!

It's just that why would Taixue invite a person from Qin Tianjian to evaluate himself?

What does Qin Tianjian do, Yang Yansi knew very well in his heart that there were a group of divine sticks living inside.

Glancing at Wang Qin suspiciously, seeing that the smile on his face was a little sinister, Yang Yansi felt that this matter was by no means simple.

Take the question from the waiter and open it.

Yang Yansi was a little dumbfounded.

Question 1:

Today, there are seven Bing on He, one bucket of damage, two Bing under He, and ten buckets of real He; Xia He Eight Bing, Yishi one bucket, and Shanghe two Bing, and Shi ten buckets. Q: What is the geometry of the upper and lower Heshi?

An ancient version of a linear equation problem.

For example, a binary equation is a linear equation.

Yang Yansi had an impression of this question, and this question couldn't help but bother him, he had seen this question in "Nine Chapters of Arithmetic".

Question 2:

Now there is a wood two feet long, and three feet around. Ge was born under it, wrapped around the wood for seven weeks, and the top was with the wood. Q: How long is Ge?

The Pythagorean problem, that is, the geometry problem of later generations.

All of a sudden, Yang Yansi felt that the person who came up with the question was very level.

This kind of simple geometry and equation problem is nothing in later generations, and there have been a lot of ancestors who have proved some of the theorems in these problems, and the two problems can be easily solved with theorems. But in ancient times, this thing was not ordinary.

Yang Yansi has always felt that the mathematics level of the ancients should be at the level of about the fourth grade of primary school.

It wasn't until this moment that he realized that he was inferior to the ancients, which was obviously at the level of junior high school.

In fact, many of the most famous mathematical formulas have been proven and applied by our ancestors long ago.

However, in the long history, it has gradually been forgotten.

Confucianism has dominated the mainstream market for a long time, and mathematics has not been developed, so many mathematical classics that our ancestors have worked hard to study have been destroyed.

Many scholars in later generations have confirmed it through classics. Many well-known theorems abroad were discovered by our ancestors hundreds of years earlier than foreigners.

Unfortunately, even though there are historical classics as evidence, in textbooks, the names of foreigners are still used in formulas and theorems.

What surprised Yang Yansi the most was the third question.

The third question doesn't have much text, it's simply a picture.

A geometric arrangement of triangles.

"Yang Hui Triangle?!"

The geometric arrangement of the binomial coefficients in the triangle in front of us does not seem to be mature and has many loopholes.

But Yang Yansi can confirm that this is indeed the 'Yang Hui Triangle' undoubtedly.

Chu Yan had been watching Yang Yansi's expression from the side, and when he saw that he was shocked by the triangle diagram he had made, he explained dryly.

"I am still in the confirmation stage of this topic, and I have not deduced the correct conclusion."

"If you don't have the right conclusion, you will take it out and let me do it?" Yang Yansi couldn't help but roar.

Chu Yan still had a dry expression, "Lord Wang has instructed me to make sure that I have a question to stump you......"

The corners of Wang Qin's mouth twitched.

If you don't be upright, you can die?

Yang Yansi was a little puzzled, "This thing was really researched by yourself, not copied from that book?" ”

Chu Yan was obviously stunned, shaking his head.

"It's a pattern I discovered in my spare time, and I still find it in that book......"

Yang Yansi searched for the only remaining historical knowledge in his mind.

Suddenly, his eyes widened.

He knew who this guy was......

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