"This is the second question, please take a look at it."

After receiving the answer sheet handed by Zhang Chuwen, Liu Yiyi saw that it was written: "Yesterday, I heard that the people next door divided the silver, and I don't know how much silver and people; I only know that seven taels per person is less than seven taels, and each person is half a catty and more than half a catty; Let me ask Liu Gongzi, how many people are divided into how much silver? ”

"Arithmetic?" Liu Yi is a little strange, such a cold discipline is also studied? Compared with Shi Yasong, these are all out of the way, even some talented people in the world are not necessarily proficient, how can she be so interested in this little girl?

Seeing that this problem is nothing more than a binary system of equations, it has been mentioned in the nine chapters of arithmetic as early as the Warring States Period, and it is not a difficult problem.

Liu Yiyi took a pen on the paper and made a system of binary equations with x,y as unknowns, and further solved the result as six people divided into thirty-five taels of silver. handed the paper to Zhang Chuwen and said, "There is Brother Lao Chuwen!" ”

Zhang Chuwen took it, glanced at it and handed it in, he didn't know much about arithmetic, even if he looked at it, he couldn't understand it. He was just amazed at the speed of answering questions with Yanagichichi. Zhang Chuchu had also done something with others in mathematics before, but no one could come up with an answer so quickly. Many people even left directly after seeing the title.

After Zhang Chuchu took the answer sheet, he did not respond for a long time. Liu Yiyi knew that she must not be able to understand the equations he listed on the paper, and she was too ashamed to come out and ask for advice, so she refused to give the next question.

Liu Yiyi sat down leisurely, picked up the tea on the table and took a sip, and had no intention of solving people's doubts.

As a man, although he comes from modern times, he also has some concepts of equality between men and women in his brain, but he is always a little uncomfortable when he is tested by a woman for no reason.

Zhang Chuchu didn't ask after all, but came up with another mathematical problem for Liu Yiyi, probably trying to understand Liu Yiyi's strange calculation method.

Liu Yiyi took the paper and saw that it was written: "There are: three bundles of superior grains, two bundles of medium grains, and one bundle of inferior grains, a total of thirty-nine buckets; two bundles of upper grain, three bundles of medium grain, and one bundle of lower grain, a total of thirty-four buckets; One bundle of upper grain, two bundles of medium grain, and three bundles of inferior grain, a total of twenty-six buckets. May I ask Liu Gongzi, how many buckets are each bundle of upper, middle and lower valleys? ”

From binary to ternary, it seems to be a lot more complicated, but in fact, there is not much change in difficulty. It just leads to another unknown, Z. Liu Yiyi smiled and listed the three equations on the paper, and then the coefficients were multiplied and subtracted, and the elements were added and subtracted up and down. Then he handed in the results.

This time, the person behind the curtain quickly responded, and as soon as the curtain was lifted, Zhang Liu walked out of it. looked at Liu Yiyi with a smile for a while, nodded to Zhang Yaoliang, the three questions are the same, and someone has finally passed the test after looking forward to it for so long.

Liu Yiyi saw the woman walking out of it, knowing that it was Zhang Chuwen's mother, so he got up and saluted, and said, "Little nephew Liu Yiyi, I have seen my aunt." ”

"Okay, good," Zhang Liu smiled, squinted at Liu Yiyi and said, "The virtuous nephew is polite." Please be seated. Then he said honestly to Liu on the side: "Father-in-law, you gave birth to a good son." ”

"Father-in-law?" Hearing this, Lao Liu grinned and laughed. Knowing that this is done. He stood up and said, "What about this dowry?" And the wedding period? ”

"Naturally, we accepted the dowry. Let's discuss the wedding date. Zhang Xiaoliang also stood up with a smile and said, "In the future, the Zhang and Liu families will be a family." ”

"Slow!" Liu Yiyi said at this time: "I also have a question!" Saying that, he stood up, walked to Zhang Xiaoliang, bent over and saluted: "Uncle Zhang, Aunt Zhang, the dowry can be stayed, but the wedding date is not in a hurry, Miss Chu Chu wants to enter the door of my Liu family, she needs to answer my question." ”

"Uh...?" The four people present looked at each other, obviously not expecting Liu Yiyi to have such a move. Lao Liu's face fell at that time, but he didn't have a seizure. One is to save some face for Liu Yiyi in front of people, and the other is to see his son being tested by a woman just now, and he is inevitably a little depressed in his heart. If such a daughter-in-law marries home, I don't know what will happen in the future. Now it's better to let her son kill her majesty.

Zhang Xiaoliang's family looked very embarrassed, and they didn't know how to respond to him.

Liu Yiyi arched his hand to Zhang Chuwen and said, "Brother Lao Chuwen will bring another piece of paper for Yiyi." ”

Zhang Chuwen said to Liu Yiyi with a hesitant face: "A virtuous brother, this..."

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

Angry?

The corners of Yanagichi's mouth hooked up a hint of a nonchalant smile.

After Zhang Chuwen took out the paper, Liu Yiyi unceremoniously lifted the pen and said to the inner compartment: "In a few days, it will be the night of the Shangyuan Dynasty, and one will write down a puzzle here!" ”

Worm two.

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

Liu Yiyi 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 riddle, I will be notified that I will definitely visit again." ”

After speaking, Liu Yiyi pulled Lao Liu out of the gate of Zhang's house.

As soon as Liu Yiyi and the others went out, Zhang Chuchu walked out of the inner compartment. Holding Liu Yiyi's three answer sheets in his hand, he walked to Zhang Chuwen's side. took the puzzle left by Liu Yiyi, and when he saw the word 'worm two' written on it, he was stupid for a while.

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

"Worm two, worm two, Fengyue has boundless ears..."Zhang Chuchu seemed to remember something, and his eyes were red.

"The wind and the moon are boundless, the wind and the moon are boundless..."Zhang Chuwen suddenly said: "Wonderful, it's really rare that Brother Liu can come up with such a mystery, but little sister, you are indeed even more powerful." I figured out the joints at once. Admire for my brother! ”

Zhang Chuchu said in a low voice: "This is a mystery that my father gave me before, and the mystery is the boundless wind and moon." These also came to mind when I saw the word 'worm two'. This man is very similar to my father. ”

"It's Shibo..."Zhang Chuwen's voice also lowered.

"Okay, Chu Chu, don't mention the past, let's go in with my mother." Zhang Liu walked up at this time, pulled Zhang Chuchu and walked into the inner compartment again.