"This is the second question, please read it."

After taking the answer sheet handed over by Zhang Chuwen, Liu Yiu saw it: "Yesterday, I heard that the people next door distributed silver, and I don't know how much silver and people are. I only knew that each person had seven taels less than seven taels, and each person had half a pound more than half a pound. I would like to ask Mr. Liu, how many people distributed how much silver?"

"Arithmetic?" Liu Yiuan was a little strange. Some people also studied such an indifferent subject. Compared with Shi Yasong, these are all partial schools. Even some talented people in the world are not necessarily proficient. How could she, a little girl, be so interested in this?

This question is nothing more than a system of binary equations. Someone mentioned it in Nine Chapters of Arithmetic as early as the Warring States Period, and it is not a difficult problem.

Liu Yi picked up a pen on the paper and used x and y as unknown numbers, listed a binary system of equations, and further solved the result: six people divided thirty-five taels of silver. He handed the paper to Zhang Chuwen and said, "I'm sorry, brother Chuwen!"

Zhang Chuwen took it, glanced at it and handed it in. He didn't know much about arithmetic things, and he couldn't understand it even after reading it. He was just surprised at the speed of answering questions with Liu Yi. Zhang Chuchu had also written about mathematical things with others before, but no one could get the answer so quickly. Many people even left after seeing the question.

After Zhang Chuchu took the answer, she did not respond for a long time. Liu Yiuan knew that she must not understand the equation he listed on the paper, and was embarrassed to come out to ask for advice, so she was reluctant to give the next question.

Liu Youran sat down, picked up the tea on the table and took a sip, without any intention of solving the problem.

As a man, although he comes from the modern era and has some concepts of equality between men and women, he always feels a little uncomfortable after being tested by a woman for no reason.

Zhang Chuchu didn't ask any questions after all, but instead asked Liu Yiu a difficult problem, perhaps because she wanted to use this to understand Liu Yiu's strange calculation method.

Liu Yi took the paper and saw it on it: "There are three bunches of high-quality grains, two bunches of medium-quality grains, and one bunches of low-quality grains, and one bunches of low-quality grains, and one bunches of thirty-nine dou; two bunches of high-quality grains, three bunches of medium-quality grains, and one bunches of low-quality grains, and one bunches of low-quality grains, and one bunches of thirty-four dou; one bunches of high-quality grains, two bunches of medium-quality grains, and three bunches of low-quality grains, and one bunches of thirty-six dou. Mr. Liu, how many bunches of upper, middle and lower-quality grains are divided into?"

From binary to ternary, it seems much more complicated, but in fact there is not much change in difficulty. It just leads to another unknown number Z. Liu Yi smiled and listed the three equations on paper, then doubled the coefficients, add, subtract and eliminate the number. Then he handed in the result.

This time, the person behind the curtain responded quickly. As soon as the curtain was lifted, Zhang Liu walked out of it. He looked at Liu Yiu for a while, nodded to Zhang Buliang, and the three questions were corrected. After waiting for so long, someone finally passed the test.

When Liu Yiu saw the woman walking out of the inside, he knew it was Zhang Chuwen's mother, so he got up and greeted her, "My nephew Liu Yiu, I've seen my aunt."

"Okay, okay," Zhang Liu smiled and looked at Liu Yi with a squinted eyes, "You are so polite. Please sit down quickly." Then he said honestly to Liu on the side: "In-law, you have given birth to a good son."

"In-law?" Hearing this title, Lao Liu grinned and laughed. He knew that this matter was done. He stood up and said, "Then this betrothal gift? There is still a wedding date?"

"Of course we accepted the betrothal gift. We can discuss the wedding date." Zhang Boliang stood up with a smile and said, "From now on, Zhang and Liu families will be a family."

"Slow!" Liu Yi said at this time, "I have a question too!" As he said that, he stood up, walked to Zhang Boliang, bent down and bowed, "Uncle Zhang, Aunt Zhang, you can keep the betrothal gift, but the wedding date is not urgent. If Miss Chuchu wants to enter the gate of my Liu family, she must have answered my question."

"Uh?" The four people present looked at each other, and they didn't expect that Liu Yi would have such a move. Lao Liu's face was put down at that time, but he did not have an attack. First, he wanted to leave some face for Liu Yi in front of others, and second, he was inevitably a little frustrated when he saw his son being taken by a woman just now. If such a wife is married, what will happen in the future? Now it's good to let her kill her.

Zhang Boliang's family seemed very embarrassed. He looked at him and didn't know how to answer.

Liu Yiuan bowed to Zhang Chuwen and said, "If you are tired, Brother Chuwen will bring you another piece of paper."

Zhang Chuwen said to Liu Yi hesitantly: "Brother, this"

"Brother, please ask Mr. Liu to ask me to ask the question!" Zhang Chuchu's voice came from the inner compartment again. The voice sounded quite confident, but Liu Yi could hear from it that this girl was gritting her teeth when she spoke.

Angry?

A faint smile appeared on the corner of Liu Yi's mouth.

When Zhang Chuwen took out the paper, Liu Yi picked up his pen without hesitation and said to the inner compartment: "In a few days, it will be Shangyuan Night. Let's write a puzzle here!"

Insect Two.

Only these two words are left on a piece of paper.

Liu Yi put down the pen, picked up the paper on the table and blew it lightly, handed it to Zhang Chuwen, and said, "When Miss Chuchu guesses the answer, you can inform me that Yi Yi will definitely come again."

After saying that, Liu Yi pulled Lao Liu out of the Zhang family's gate.

As soon as Liu Yi and the others left the house, Zhang Chuchu walked out of the inner wing. He held Liu Yi's three answer sheets in his hand and walked to Zhang Chuwen. He took the puzzle left by Liu Yi, and when he saw the word "子2" written on it, he became obsessed.

"Little sister, do you know what this means?" Zhang Chuwen leaned forward and asked in a low voice.

"Zhong 2, Zhong 2, Feng Yue 2" Zhang Chuchu seemed to remember something, and her eyes were red.

"The wind and moon are boundless, the wind and moon are boundless." Zhang Chuwen suddenly said, "It's amazing, it's really rare that Brother Liu can come up with such a riddle, but you are really even more powerful. You can figure out the joints in it in one go. I admire you for your brother!"

Zhang Chuchu whispered: "This is a mystery that my father has given me before. The mystery is Fengyue Wubian. These are also what I suddenly thought of when I saw the word "子子". This person is very similar to my father."

"It's uncle," Zhang Chuwen's voice also lowered.
Chapter completed!