In autumn, before the sun warms the world, the air is already cooled by some rain.

At the entrance of a small courtyard, an osmanthus flower is fragrant, which makes people feel beautiful.

"Hey, I'm so worried, kid!"

A middle-aged man dressed in a linen-colored cloth shirt knocked on the wooden door of the courtyard.

"Brother Zhang, what's wrong?" The door was opened by a young man, with short hair and a green coat, and his hair grooming was a little conspicuous.

"Isn't it my rabbit cub yet? This little rabbit kept pulling me and asking me, "What am I going to do?" ”

After hearing this, the short-haired man's eyes lit up, as if he was interested.

"What did they ask? But, Brother Zhang, why did you come to me instead?"

The middle-aged man was not afraid of his laughter, and said with a smile: "No, I guess that the cub in my family told you what happened last time." ”

It turns out that a little kid who lives next door to him a few days ago encountered a problem in a private school, and he just helped solve it.

The topic is as follows: Suppose there are 100 people in the private school, a total of 100 books, one for three students, and three books for each teacher, ask the students, how many people are in each of them?

It is not difficult to solve this problem, but it is difficult to find a simplest algorithm. The short-haired man happened to see it that day and solved this problem easily. It seems that his own algorithm caught the attention of Mr. Private School!

"What's the topic today?" the short-haired man also wanted to see what kind of problem this interesting private school teacher was going to have.

"Hey...... Why don't you go over and ask that kid of mine yourself? How can I remember any subject, I will farm. The middle-aged man said this, stretched out his calloused hand and scratched his head.

"Sir, I'll help you bring the field tools, and I'll trouble you more about my rabbit cubs. The middle-aged man said with a smile.

The short-haired man knows that this simple man who has been plowing the fields for half his life is all for his son's future, but this is also too doting. These two words of learning are not taken from the hands of others, but must be learned, thought and acted on by oneself. However, he knew that he would not be able to convince even himself, so he did not speak.

Now the emperor of the Great Qin State has promulgated a land law to encourage the cultivation of fertile land, and there are even rewards. Therefore, now every household is digging in the wilderness. Since the middle-aged man bothered him to teach his homework, he agreed to help the short-haired man clear the wasteland. This time and again, it can be regarded as a return of favors.

The short-haired man had just pushed open the bamboo door, and there was a burst of chickens and dogs barking.

"Uncle, you help me catch that chicken. If my father came back and saw the chickens running away, he would have scolded me to death. ”

A boy of seven or eight years old is chasing a rooster flying around. The short-haired man shook his head and glanced at it, and his body moved, and the whole person jumped up.

"Wow, that's amazing!Uncle, do you know martial arts?" the boy clapped and screamed when he saw that the short-haired man easily grabbed the rooster running around.

"At a young age, you can't learn anything!" said the short-haired man, ignoring the boy, and instead said with a straight face. He has always hated naughty children, and he has no interest in reading questions at the moment.

Seeing that he was leaving, the little boy hurriedly trotted over. Wrapping around the arm of the short-haired man, he flattered and said, "Uncle, I told Mr. the algorithm you taught me that day, and she praised me." ”

The short-haired man snorted coldly, "So, I've given you another question, right?"

"Yes, but I can't solve this problem the way you told me. This gentleman, it's really getting more and more unreliable. The boy said helplessly.

The short-haired man said in his heart, it is estimated that this topic was given to him by the gentleman, and it is not necessarily. After all, his kind of algorithm is unique in this world.

"Tell me, what's the title? What's going on with the chickens and dogs jumping all over the yard?" said the short-haired man angrily.

"It's not because of my husband's question, I really can't help it. The boy said with a sad face.

"The gentleman said, "There are black, white and gray chickens, each gray chicken lays five eggs a day, the white chicken lays three eggs a day, the black chicken lays only one egg a day, and today there are a hundred eggs, how many chickens are there in black and gray and white?" The little boy took a branch and drew on the ground.

After hearing this, the short-haired man smiled slightly. It turned out that the kid made the chickens fly and the dogs jumped, and he made the chickens at home to paint in order to solve the problem.

"If you do that, you won't be able to solve the problem. You have lost the paint, and after I have explained it to you, you will wait for me to pass on to your husband a letter, and you will come to my lodgings in the evening to get it. Don't worry about your husband scolding you for this, he'll understand after reading it. The short-haired man said seriously.

The boy nodded, and then looked at the short-haired man. Sure enough, the uncle drew some strange symbols on the ground that he had told him about last time.

"Remember the method I told you last time, the first symbol represents the black chicken, the second is the white chicken, and the last one is the gray chicken. You see, we can list two equations for reference. The sum of the number of gray, white and black chickens is equal to 100, and the number of eggs laid by the three colors of chickens per day is multiplied by the corresponding symbol, and then the sum of the three is also equal to 100. The short-haired man preached as he painted.

In fact, this question is not difficult, the symbol represented by the black rooster must be an integer of three, so it can be listed in an exhaustive way. But at the moment, the short-haired man doesn't plan to use this brute force to solve the problem.

Although the short-haired man knew how to parse the indefinite equation composed of these two equations and three unknown quantities, it still took a long time to communicate clearly with the boy.

The problem starts with the elimination of one of the three unknowns, and after the two original equations have eliminated one of the variables, it is much easier to leave two variables. Then take the new variable to solve the fraction in the equation, narrow down the range of variables, and then get the answer.

"There are several answers to this question, and it doesn't matter if you don't understand it. If the gentleman asks, you will say that you have calculated it by enumeration. Remember what I said, and come in the evening to pick up the letters. The short-haired man stroked the boy's hair and left with a smile.

Since the founding of the Great Qin, the products have been abundant, and the people have worked in peace and contentment. The contemporary saint is even more ambitious, with the ambition to dominate the world. Sima Ruian, a reformist in the DPRK and China, was determined to settle the outside world before the interior, and adopted a new policy to implement land orders in various places. Fertile land was divided into commoner ownership, and the state rewarded cultivation of land, encouraged land reclamation, and the production of grain, and those who had a lot of cloth were even exempted from paying taxes.

After the promulgation of this measure, people from all over the country joined the ranks of reclamation. Since the state recognizes the private ownership of land, the people are full of energy.

In the countryside of the village, everyone is smiling. Only the short-haired man in a linen green coat looked at the scene in front of him and fell into deep thought. This person is Lin Ziyun, he has been here for many days, but he is also satisfied with the pastoral time, and he is happy. But the experience of the previous life and the lessons of history told me that now that the world is in turmoil, Beiyan will inevitably participate in it. In times of war, the state is exempt from forced labor, and the decision cannot be realized. When the time comes, a basin of cold water will be poured on these innocent people, but I am afraid that it will be another empty joy, which will only add more refugees to the disaster.

If a country wants to fight, it naturally needs military resources. For a long time, these people worked hard, and it was inevitable that they would be used as military salaries......

Lin Ziyun still admires the Minister of Political Science and Law of the Dynasty, Sima Ruian. This person has both courage and insight, and he is at a bad time.

In addition to the land law, this man even proposed the abolition of the hereditary system, which would undoubtedly have had a profound impact on some of the old aristocracy.

When the world was divided into three, the Qin State was reforming, I really don't know if it was good or bad?

Prosperity, the people suffer! Death, the people suffer!

Think about that Shang Ying, Li Kui...... Lin Ziyun no longer thinks about it, since he is determined to fight with the world, then don't think too much.

Lin Ziyun came back from the mountains, felt a little thirsty, and stood on the side of the road and drank a few sips of water. Seeing the pond in front of me, there are lotus leaves like green jade rippling in the middle of the water, I only feel that my mood is wide open, and I can't help but come forward to admire.

Lin Ziyun looked at the ripples of autumn water in a pond, full of lotus leaves, and couldn't help but say: "The pool surface is rippling, and the leaves and fields are exposed between the waves." Who is covered by a green cover on the water, but the cover is red makeup and singing lotus. ”

He couldn't help but admire in his heart, this scene was really like the beautiful scenery that Ouyang Xiu saw when the girl played in the lotus pond by boat. Although there is no beautiful woman, the green and verdant lotus leaves are more flavorful.

"Who is covered by a green cover on the water, but the mask is red makeup and sings lotus picking......"

By the pond, a woman in a book room muttered a poem written by Ouyang Xiu that Lin Ziyun had just said. The girl seemed to think of something, and her cheeks were slightly red.

"Chu'er, go and see which prince is reciting poetry here, and invite him to come over for some tea." The girl spoke. Through a white gauze beaded curtain, the girl sat in the back, and it was not clear what she looked like.

"Miss, how can there be any son. The person who recited the poem just now seems to be an uncle with a hoe. ”

"Is it an uncle? hehe...... This folk has indeed produced talents since ancient times. Chu'er, please invite that gentleman over for a cup of tea on my behalf. The girl smiled slightly.

The maid knows the temper of her own young lady, and especially likes to get to know those folk heroes. Even, with her precious body, she set up a private school in the mountains to teach some village students.

Chu'er walked out of the door and saw a short-haired man with a clear face.

"This gentleman, my young lady said that there is tea in it, can you come and drink some?"

Lin Ziyun heard someone shouting at him, and looked at the voice. In a grass house in front of her, a girl dressed in purple was waving to her.

He was about to refuse, but suddenly a jolting sound came from the grass, which made him feel refreshed.

"Thank you, girl! I don't want to set foot in your house, and I don't feel guilty about disturbing. ”

Chu'er saw that this person was dressed rudely, and he thought it was ridiculous when he opened his mouth. She hid her face and chuckled: "Don't bother, sir, I'll make you a pot of hot water to make tea, you can come over first." ”

The courtyard is full of fragrance, and the sound of the piano is bursting. Lin Ziyun said in his heart, the master must be a woman with excellent cultivation.

He straightened his clothes and stepped inside. The sandalwood in the room was suffocating, and when he smelled it, Lin Ziyun's eyes fell on the back of the bead curtain. Faintly, a graceful female figure is playing the piano with no hands. There are several ink landscape paintings hanging on the wall, which actually depict the scenery of the suburbs of Chang'an. The ink is dotted, and there is a sense of naturalness. Lin Ziyun approached to take a closer look, and the words "landscape idler" were written on the pen of each painting.

When Lin Ziyun listened to the sound of the piano, he stood up and saluted and said: "The skills of the landscape idlers are exquisite, and Lin is impressed." ”

"The little girl is only a shallow learner, so don't disturb the husband's audio-visual. The woman said slightly.

"Where, where. Lin Ziyun said.

Lin Ziyun's eyes finally fell on a long picture depicting the bright moon in the mountains, and he couldn't help but say: "The moon star sea currents, warm a pot of mountain wine." In this painting, the bright moon is like a clear stream, but the spring water in the mountains is like a bright moon, what a masterpiece! The words are good, the painting is even better!"

"Sir is wrong!" said the woman, softly.

A young woman dressed in purple brought a pot of tea, Lin Ziyun thanked her, and felt that it had a different taste after drinking a cup. This tea has a unique sweetness, like a clear spring in the mountains, and there is a trace of fragrance between the tea leaves, Lin Ziyun can't help but imagine the scene of a tea picking woman picking tea with her own hands.

"I just heard the wonderful poetry of the child, the little woman has always admired the mountain and wild monks, and today I saw the style of Mr., and it was really peerless!"

Lin Ziyun couldn't help but have a black line on his head, since he came to this world, he has repeatedly used the poems of his predecessors to make people reverie. He worshiped the Buddha in his heart, but he could only say that he had misunderstood. It is impossible for him to go up and explain that the poem was not written by himself, but by another world, an ancient man who has died for thousands of years.

After chatting a few words, Lin Ziyun got up and said goodbye.

It felt like running out, and Lin Ziyun breathed a sigh of relief. This woman is too powerful, she knows everything, he can't. It's really uncomfortable to pretend just now. What does he know about piano, chess, calligraphy and painting, appreciate paintings, listen to the piano, but fortunately, if he has any insightful opinions, it is really difficult.