The sky is blue and the sun is bright.

In a small farmhouse courtyard, there was a black cat lazily lying on her stomach, and the little girl next door quietly slipped into the stove room in the courtyard to find food.

The black cat squinted at her, then closed it again, with a look of indifference.

Cats have the pride of cats, and it is impossible to look after the house, even if the most precious thing in the house is being stolen.

The little girl touched half of the nest and was about to leave, when she suddenly heard a rustle outside the blue cloth curtain, she quietly opened a corner, but saw a tall, luxuriously dressed young man and Sister Rong sticking together, the two of them were rubbing, and they were not afraid of the heat.

This man was born with a white face, red phoenix eyes, a straight nose, and his eyebrows flew obliquely into the sideburns, compared to the swarthy men in the nearby villages, I don't know how many times better, I saw the little girl's heart beating suddenly, and somehow suddenly sour, and I felt that the nest head was difficult to swallow.

Sister Rong's cheeks were flushed, and the corners of her eyes were about to drip water, which was several times more beautiful than usual.

"What's your name?" The man's voice was extremely magnetic, making the little who stole the head of the nest pound in her heart.

She wanted to get out of here right away, because she was in danger of being discovered at any moment, but she couldn't move her legs.

"Don't, don't! Good... It's embarrassing, Shaozai Engong, the slave's name is Liu Rongniang, and my father and mother all call me Rongrong. ”

"Rong Rong is worthy of being used to crops, her body is so strong and elastic."

Rong Niang was a little annoyed, and said hatefully: "Don't look down on the crops, here, they all say that I am more beautiful than the daughter of a big family in Bianliang!" ”

After a while, Sister Rong Rong's two good-looking feet were lifted, and like a little weasel, she climbed out, leaned on a tree and panted, biting her head hatefully, and knocking out one of her teeth.

She bared her teeth in pain, and the little somehow held the sweet nest head of the past, and she had an appetite at all.

She spread her feet, ran to Zhang Dahu's field, and chatted with Liu Laohan.

Liu Laohan threw down his hoe and ran home quickly.

In the kitchen, Liu Laohan looked at the scene in front of him, and his eyes were torn and he raised his stick and smashed it down.

Yang Lin has been cultivating both inside and outside, and it has been two years, and the subtlety of Taoism lies in making people deaf and agile.

Raising his hand and grabbing the stick, he did not forget to grab his clothes to cover the body of the girl under him, the girl had already died, buried her head in the ground, and pretended to be an ostrich.

"You brute, I'll kill you."

Yang Lin felt a little embarrassed, and Zhenyi said: "You are Rong Niang's father, I will send someone to welcome her into Bianliang City, you are not allowed to beat her after I leave, you know?" ”

Liu Laohan was stunned in place, watching the brocade-clothed young man flee from his small courtyard, and before he had gone far, some military men suddenly appeared nearby, leading out horses and hugging him away.

That night, Liu Laohan drank a lot of wine, and his daughter-in-law was busy cutting cloth and making clothes, and the next day a carriage came, which was a suburb of Kaifeng, and the villagers were also well-informed, but no one had ever seen such a beautiful horse and such a luxurious carriage.

Liu Rongniang's cheeks were flushed, she was not yet old enough to talk about marriage, and she sat in the rich carriage that appeared in her dreams a few times, and her mind was dizzy, and she didn't know what she was thinking.

---

In Zhaode Fang, Yang Lin strolled, followed by his nephew Xu Shuwei.

After the Yang family passed to Yang Tong, it was almost extinct, and there were few relatives who did not have a clan, which was a big defect.

In this era, the significance of the clan to a person is too great, so he also attaches great importance to these relatives of his mother's family.

Uncle Xu slightly picked up some simple pharmacology and explained it to Yang Lin, and he still heard him in the clouds.

Xu Shuwei was able to resign from the government to study medical skills, to be honest, Yang Lin still admires it, the average life expectancy of people in this era is so short, it is because of a disease that people will die at every turn.

If you can really make achievements, it will be very useful for the country and the people.

Yang Lin suddenly asked, "You have been studying medicine for so long, have you ever written a medical book?" ”

Uncle Xu blushed slightly, a little embarrassed, and a little proud: "I only wrote three books: "Songs of Hundred Proofs of Typhoid Fever", "Treatise on Typhoid Fever", and "Ninety Treatises on Typhoid Fever". ”

Yang Lin nodded, not knowing the significance of these three books in the history of Chinese medicine for the treatment of typhoid fever. Although he is much younger than Uncle Xu, as an elder, he still holds the shelf and says: "Since you have abandoned the official to practice medicine, you must study hard, write more books, and make some achievements. ”

Uncle Xu Weilian claimed that he was taught with an open mind.

Typhoid fever was the most common disease in ancient times, often killing patients who were infected with it, and the Great Song Dynasty had a big problem, that is, the lack of labor.

Yang Lin had the heart to discuss with Cai Jing to build some government-run medical centers in various places to ensure that the poor could also see a doctor.

Cai Jing has always been more enthusiastic about this, and he should not object, Uncle Xu saw that he was silent, and thought that his uncle was not interested in medicine, so he casually said something interesting about what he knew.

Yang Lin answered the phone without a pair, until he said that he knew a person who studied arithmetic, and Yang Lin suddenly became interested.

"Call me another day to come up and see you at my house."

Uncle Xu smiled and said, "We made an appointment to go to Fanlou in the evening to pick up the wind and wash the dust for the little nephew, and my cousin wants to see him, so we can do it now." ”

Sure enough, the friends of scientists are all scientists, which is also called the gathering of likes.

---

After Jia Xian handed over the door sticker, he walked around the door in a restless circle, and the door of the Yang Mansion didn't bother to invite him into the doorman to rest.

Uncle Xu ran out in a hurry, and greeted him from afar as soon as he saw him, "Jia Xian, why did you come, my cousin can't wait." ”

"What kind of person is Shaozai, if you don't go back to the house to clean your face and change your clothes, do I dare to come?" Jia Xian gave a salute, and before he finished a sentence, he was dragged into the mansion by Uncle Xu.

"Don't come to this set of false courtesies, if you don't come again, I won't be able to explain."

Zhaodefang is wide and deep, Jia Xian doesn't know how long he walked, his legs were sore, he passed through the courtyard, folded a moon gate to the right, bypassed the flower furrow and rockery, and faced another incense pavilion.

After passing through the house, Xu Shuwei took him to Yang Lin's study, and if a person comes in, he will be suppressed, and Jia Xian is no exception.

In addition to the calligraphy and painting of the Son of Heaven, which is Cai Jing's, the rest are Wang Xizhi's authentic works, Yan Zhenqing's calligraphy, and Wu Daozi's paintings.

"You're Jia Xian?" Yang Lin asked with a smile.

"The grass people are." Jia Xian stood solemnly with his hands down, his heart was beating wildly, and his hands hidden in his sleeves trembled slightly, although the person in front of him was young, he was the biggest official he had ever seen in his life.

looked at the people in front of him, about forty years old, full of wind and frost, a green shirt has been shampooed and white, it seems that life is not easy.

Yang Lin raised his eyebrows lightly and said with a smile: "Do you have any fame?" ”

Jia Xian's face turned red, "The grass people are running around all day long, and they have no time to specialize in scripture and history, and they have no chance to take the three exams." ”

Xu Shuwei helped his friend on the side: "Uncle I don't know, Jia Xian has real talent to learn." ”

Yang Lin glared at him and said, "How can you have no fame if you are talented?" ”

"What Shaozai said, the grass people dare not agree." Jia Xian forgot about the etiquette in annoyance, talked eloquently, and said: "Mathematics has existed since ancient times, the way of the six arts, and real numbers are made." Hetu and Luo Shu develop secrets, gossip and nine domains are intricate and subtle, and as for the use of Dayan and Huangji, the ancient sages are still important, and today's ordinary people can ignore the end of the six arts!

The use of mathematics is indispensable in the world, between public and private! ”

Yang Lin's mouth opened slightly, paused for a moment, and then smiled: "This official doesn't mean that, with this vision, he is indeed worthy of three words." ”

His superficial understanding of the history of mathematics in the Northern Song Dynasty made Yang Lin a little weak-hearted, for fear that he would miss some great mathematicians and delay the progress of Chinese science, so he asked: "Since you are so persistent, you must have made some achievements, have you ever written a book and said?" ”

In his opinion, it is the one who writes the book that is powerful.

"Yes, there is, but unfortunately it is too shy to publish." Jia Xian sighed and said: "When I was young, I wrote nine volumes of "The Yellow Emperor's Nine Chapters of Algorithm Grass" and two volumes of "Algorithm Ancient Collection", and now there is a manuscript. ”

If Yang Lin had studied the history of mathematics, he would have known that the current poor acid had invented the "multiplication method" of higher power square in this era.

"Oh? Take it another day, I'll help you take a look, as long as you have real talent and real learning, the official will help you pay for printing. ”

Jia Xian was overjoyed, and he said with some apprehension: "The grass people dare to ask Shaozai to preface the clumsy work. ”

A champion who prefaces himself will definitely expand his influence and reputation to the peak.

Yang Lin nodded and said, "Make a preface and say, nephew, if you have any other friends, introduce them to me." I'm interested in these miscellaneous studies. ”