As the first batch of cloth in the dyeing workshop is about to leave the tank, how to sell the cloth is an important problem in front of Ye Yu. Since meeting with Pan Zhisuo, Ye Yu still has not taken the slightest response.

In the past few days, Ye Yu has negotiated and mediated with the large and small silk villages in Qingliu County as usual, and the result is as Pan Zhi said, they are all of a unified caliber, and they would rather spend more money to buy goods from Pan Ji Cloth Village, rather than buy the cloth from Ye Yu's dyeing workshop at a low price.

Such a united front is obviously a joke to see him Ye Yu.

In the gazebo in the backyard of the Su family, Ye Yu carefully taught Su Yueyun mathematical knowledge.

Although the knowledge Ye Yu talked about was very simple, it was difficult and bitter for Su Yueyun, and after a few months of study, the progress was very slow.

"Ye Gongzi, Yue Yun has doubts and doesn't know whether to ask?" Su Yueyun closed the book, hesitated for a moment, and finally opened her mouth.

Ye Yu smiled slightly, signaling to Su Yueyun but said it was okay.

"Although Yue Yun is not as knowledgeable, she also knows a lot about arithmetic, and the content of this book written by Ye Gongzi is really obscure, Yue Yun wants to ask ......"

Having said this, Su Yueyun glanced at Ye Yu and hesitated.

"I want to ask if Ye did it on purpose?"

Ye Yu had long expected that Su Yueyun would say this, and seeing that the other party was silent, Ye Yu continued: "Miss Su really doesn't hide it, Uncle Su said that Ye Mou, the eye ruler Ye Mou didn't know, the reason why he was able to accurately measure the size was that in addition to Ye's eyesight, it relied on the conversion of arithmetic!" ”

Having said this, Ye Yu felt that it was necessary to explain, otherwise he would definitely be called a liar.

Then he pointed to the stone pillar of the pavilion opposite, and said solemnly: "Ye has already explained a triangular law in the book, Miss Su can call the housekeeper, and Ye can measure the height of the pavilion pillar without measuring or touching the pavilion pillar!" ”

Seeing Su Yueyun's questioning expression, Ye Yu whispered a few words in Guo Xiaotian's ear, and then Guo Xiaotian left in a hurry. After a while, Guo Xiaotian took the measuring rope.

According to Ye Yu's instructions, the pavilion pillar was used as a right-angle edge, and then another right-angled edge was extended to the ground, and finally the head of the pavilion pillar and the ground were diagonally pulled into an oblique line with a measuring rope.

In this way, the rudiments of a right triangle are completed. Knowing the hypotenuse and right-angled edges, Ye Yu asked Su Yueyun to calculate according to the trigonometric law in the book, and the results were basically the same as the subsequent measurement column heights.

Seeing Su Yueyun's joy, Ye Yu said with great emotion: "This method was not created by Ye, I have it in ancient China, and it has been recorded."

It's just that no one cares about it for a long time, and even if there are one or two shining arithmetic geniuses, the imperial court will not pay attention to it! The place that the imperial court attaches importance to is nothing more than an article, a strategy, a poem......"

"What ...... the angle in this book?"

"Oh, that's an extension of the law of triangles, as long as you know the angle, the general rule of triangles, you only need to know the length of one side, you can get the length of the other two sides, this is a bit esoteric, you don't understand ......"

Ye Yu said in his heart that this involves the sine theorem and the cosine theorem, and you can't understand the basic Pythagorean theorem, so you should put this first.

"Oh!" Su Yueyun nodded earnestly like an obedient student. Then he raised his head and looked straight at Ye Yu without saying a word.

Ye Yu's heart was furious when Su Yueyun looked at him, thinking that there are no flowers on my face, is it interesting for you to look at it like this?

So he coughed uncomfortably and said, "Miss Su, Ye Mou came today after cleaning his face, could it be that there are still stains?" ……”

"Ye Gongzi, you are really knowledgeable and talented, Yue Yun really admires it!" Su Yueyun did not answer Ye Yu's question directly, but smiled shyly with her cheeks.

"Is there one?"

"Yes!"

"Then why haven't you called me Mr. for so long?"

As soon as Ye Yu said this, Su Yueyun was immediately embarrassed, and after a long time, Su Yueyun said in a low voice: "You and I are of the same age, if you are called Mr., wouldn't it be ......?"

"What's not?"

"Not ......"

“……”

Seeing Su Yueyun's unspeakable expression, Ye Yu didn't want to break the casserole and ask to the end, but turned his face sideways to look into the distance, and said to himself: "I don't know if Uncle Su will go smoothly ...... this time."

Ye Yu's change of topic made Su Yueyun feel relieved, and she breathed a sigh of relief when Hongxia was secretly born, and then comforted: "Ye Gongzi rest assured, my father has made a lot of friends and will definitely be able to go back!" ”

"I hope so!" Ye Yu watched the leaves in the courtyard fall and scattered, and couldn't help but sigh, "Time is really like a white horse passing by, and in the blink of an eye, it's autumn......"

After that, Su Yueyun asked some more questions, and Ye Yu answered them carefully, and when he came out of Su's house, it seemed to be close to afternoon.

Passing through the market, Ye Yu felt a strong festive atmosphere. After asking Guo Xiaotian, he knew that the Mid-Autumn Festival would be in a few days.

However, compared with later generations, the Song Dynasty's emphasis on and respect for the Mid-Autumn Festival was incomparable to that of later generations.

In the days leading up to the Mid-Autumn Festival, shops sell new liquor and rearrange the colorful buildings in front of the store. On this day, the Mid-Autumn Festival night market is rarely seen in a year.

Businessmen and officials, in their own pavilions and pavilions to admire the moon, the piano is elegant, and the knowledge is endless.

Ordinary citizens are vying to occupy the restaurant first, and it is just nightfall today to catch a sneak peek of the moonlight......

There are many traders buying and selling goods in the market, and Ye Yu walks through the streets in a wheelchair, feeling the rich and rare festive atmosphere, which will be his first Mid-Autumn Festival in the Song Dynasty.

"You return my goose! You return my goose ......" A peasant woman roared, her hands twisting and dragging the man in gray.

The man in gray held the basket in his right hand, pushed the peasant woman to the ground with his left hand, and saw that the peasant woman was still unyielding, and then showed a hideous color, kicked the peasant woman viciously, and still scolded and scolded: "Damn, this goose is obviously the master's, if you are stubborn, don't blame the master for being unkind!" ”

The peasant woman's face was full of pain, and she wailed, "Please give me back the goose, and the family of the peasant woman is counting on this goose to exchange for rice and grain...... Please! ”

"Stubborn!" The man in gray said another kick, and the right side of the peasant woman's face was bruised.

The onlookers pointed at the man in gray, but no one stepped forward to help.

Ye Yu listened to everyone's private discussions in the crowd, and roughly understood what happened.

Behind him, Guo Xiaotian looked at such an unfair matter, and suddenly his muscles burst out, and he clenched his fists and was about to go up to teach the gray-clothed man a lesson, but he was stopped by Ye Yu's words.

"Childe! Why don't you let me teach the thief a lesson? Guo Xiaotian blocked Ye Yu's words, and there was a kind of dissatisfaction in his heart.

Ye Yu waved his hand and motioned for Guo Xiaotian to look into the distance: "You don't need to make a move, isn't this someone coming?" ”

Guo Xiaotian followed Ye Yu's line of sight, and sure enough, he saw a team of officials coming here, led by an old man over fifty years old, dressed in a green official uniform, and his thin body looked very energetic.

"Childe, the official thief is a family, can it work?" Guo Xiaotian has suffered a lot over the years, and he has no confidence in the government, especially the official government of the Great Song Dynasty now.

"Don't worry! This matter is encountered by County Lieutenant Liu, it must work! ”

Ye Yu looked at the old man in green who was walking here, and said to Guo Xiaotian confidently.

Although he has not seen Liu Yuanshan, he can wear a green official uniform in Qingliu County, and patrol the streets with official missions, and this is the only Liu County Lieutenant.

When the two were talking, Liu Yuanshan had already come to the front, and the crowd automatically moved out of the way.

When the man in gray saw that the official had arrived, he didn't dare to commit murder in public, but changed his flattering face: "County Captain, you have to be the master of the little one, the little one is ordered by my family to take the two geese raised at home and send them to the house for the Mid-Autumn Festival banquet...... But when you look at the woman, you have to blackmail the little one, and insist that this goose is hers! ”

The man in gray kept talking about his grievances, so that Ye Yu on the side couldn't help but appreciate: This kid is really a talent, and his face is not red and his heart does not beat when he lies. If he hadn't known what was going on, he would have been really moved by this kid.

Liu Yuanshan's dark face was not angry, he first glanced at the man in gray, and then asked in a deep voice, "Is this really the case?" ”

"Little Wangcai, my family members are outside the king of the west of the city, how can they cause trouble to the county lieutenant because of two geese, don't you say?"

"My lord, the woman was wronged, he robbed the woman's goose, and asked the adult to call the shots for the woman!" The peasant woman bowed her head as she spoke, and after a few times, blood was already flowing from her forehead.

"Be bold and prosperous! If you don't know how to repent of stealing other people's property, you will sue the wicked first! Are you guilty!? ”

Although Wangcai was a little frightened by Liu Yuanshan's drink, he still refused to accept it: "My lord, can you listen to this woman's words!" This goose was obviously fed by my lord......"

"My lord, he's talking nonsense!"

“……”

"My lord, this woman keeps saying that this goose is hers, and the little one may I ask, what evidence is there?" Wangcai smiled coldly, and then asked a difficult question.

The peasant woman was speechless when she was asked this, most of the geese were similar in appearance, and no one had the leisure to study the characteristics of the geese.

The peasant woman couldn't come up with evidence after thinking about it for a long time, and finally pinned her hopes on the onlookers.

But to the disappointment of the peasant women, all the people who were still excited about the crowd were silent and avoided them when they needed to testify.

Liu Yuanshan watched everyone avoid it, but his face was cold: "Do you dare to quibble in front of this official?" ”

Wangcai insisted on it: "The villain doesn't dare, but he just asks the adults to do this business, don't listen to the one-sided words of the woman!" ”

"Humph! Come! Ask for trial! Liu Yuanshan saw that he could not convict Wangcai at this moment, so he had to escort the two into the court for interrogation slowly.

Ye Yu saw that the peasant woman and Wangcai were about to leave, he felt that this matter had to be taken care of, so he said: "Lord Liu, this aunt sells geese for rice and grain, and she can't be delayed for a moment. Since you don't want to testify, the grass people are willing to testify here! ”