Three Kingdoms

A few days later, Fei Qian really didn't expect that Li Ru would recommend him to Cai Yong.

Speaking of Cai Yong, he is really a great figure among literati. Just the halo hanging on his body can blind the eyes of ordinary people if he takes it out at random.

There were so many great writers, historians, musicians, painters, and calligraphers of the Eastern Han Dynasty that they really doubted whether Cai Yong was a normal human being.

In terms of literature, Cai Yong is most famous for leaving "Xiping Stone Classic" to later generations.

It was during the reign of Emperor Ling. Cai Yong believed that some of the Confucian classics at that time contained many inaccuracies and many errors in writing. In order not to hinder subsequent learning, Cai Yong requested that these scriptures be corrected. After the imperial edict was approved, Cai Yong personally wrote the elixir on the stele, ordered workers to engrave it, and erected it outside the gate of Taixue. There are 46 inscriptions in total. These stele are collectively called "Hongdu Stone Classic", also known as "Xiping Stone Classic". It was a model for scholars all over the world to revise texts. Suddenly, the gate of Taixue was bustling with activity. Many people came here every day to view the calligraphy works. There were thousands of cars and horses, and the roads were blocked.

In addition, in terms of music, in addition to the much-talked-about story of Jiaoweiqin, Cai Yong also formulated the Cai family's five lanes, "Spring Outing", "Lushui", "Secret Thoughts", "Sitting Sorrow", "Autumn Thoughts" ”, later together with the Ji’s Four Lanes customized by another musician Ji Kang, namely “Changqing”, “Duanqing”, “Changside” and “Duanside”, they were called the Nine Lanes of Qinqu. After the Han Dynasty, they even became the royal One of the assessment criteria for becoming a scholar.

Of course, part of the interest of later generations in Cai Yong comes from his daughters, Cai Yan and Cai Zhaoji. I won’t go into details about this.

So when Li Ru informed Fei Qian that he had recommended him to Cai Yong, Fei Qian really couldn't believe it. Until he entered Cai's mansion, he still felt a little bit like he was still in a dream.

Cai Yong was sitting in the first place, and he didn't know how to handle it. Cai Yong has not accepted disciples for many years. Firstly, because his reputation is getting stronger, he must be cautious about accepting disciples. Secondly, the bad things his daughter encountered really made him quite sad. Thirdly, because of his age. As he grew older, he really didn’t have the energy to teach with all his heart, so he simply closed the door and stopped accepting disciples. But now I don’t know where Li Ru went to find the token he had given to his friend before, and had someone send it back, on the condition that he accept Fei Qian. As a disciple, this is really embarrassing for Cai Yong.

When Li Ru sent the token, of course he said it very casually and clearly. He clearly explained that Fei Qian's father had been kind to him, and now he had achieved some success. When he learned that Fei Qian was interested in studying, he asked him to use his connections. I found Cai Yong's keepsake, and it was up to Cai Yong to decide whether to accept it or not. Anyway, he had done what he should have done and had a clear conscience.

The most important thing is the sentence "have a clear conscience". You, Li Ru, have a clear conscience. If I, Cai Yong, refuse, then what I said at the beginning, "Bring this thing to me, I will do whatever I can, and I will accept anything" is not a slap in the face to myself. How can I have a "clear conscience" if I lose my face? It's been rumored that I, Cai Yong, broke my promise and got fat, so do I still want to be a human being?

Cai Yong looked at the young people in the hall. They were slender, restrained in charm, and handsome in appearance. They were somewhat passable, but regardless of whether they took it in or not, they still felt a little heartbroken. But since everyone was here, he still touched it first. To find out, ask first.

"What do you study?" - What have you studied, and what are you good at?

"Young man is well versed in the Six Classics and prefers to do sutra arithmetic." Thanks to the previous Fei Qian, I still remember most of the six sutras, but Fei Qian can't do anything like trivial matters, but doing sutra arithmetic is different. Just kidding, after all, future generations are also people who have gone to high school and college. No matter how awesome you are from the Eastern Han Dynasty, have you seen matrices, do you know calculus, and the general theory of probability...

In fact, Fei Qian also wanted to say, not only that, I also know about "washing in the gutter", and "Biyane" and "Yamei Daddy" also know a little bit, but unfortunately these things were completely useless in the Eastern Han Dynasty...

Cai Yong was quite surprised, because sutra calculation was one of the most advanced knowledge in the Eastern Han Dynasty, and it was not something ordinary people could play with. At this time, "Zhou Bi Suan Jing" had only been written two or three hundred years ago, and the articles were mostly obscure and unclear. People without strong imagination and deduction ability would be blind even if they read the text. For example, "Zhou Bi Suan Jing" has this description, " If you want to find the evil solstice, take the lower part of the sun as the hook, the higher part of the day as the stock, multiply the Pythagorean solstice by multiplying each one, and divide them by taking the square root, and you will get the evil solstice.” This is the Pythagorean theorem. If you haven’t understood it yet, That sutra calculation has nothing to do with you.

There is another book that is relatively better, just a little bit better, which is the famous "Nine Chapters of Arithmetic". However, at this time, "Nine Chapters of Arithmetic" has not been compiled and annotated by Liu Hui, and it is still very messy and disorderly. Although it is relatively close to some specific issues in life, it still belongs to the type of book that is not approachable.

Cai Yong suddenly became interested. After all, there are relatively few people studying this stuff in this era, and it is difficult to find colleagues. So he casually asked a question in Chapter Nine to try: "Now there are towns whose size I don't know. Go out of the north gate." At twenty paces there is a tree. After going out of the south gate fourteen paces, turn around and go west one thousand seven hundred and seventy five paces and you will see a tree. How many square meters are there in the city? There is a big landmark tree, and then after 14 steps out of the south gate, you walk 1775 steps westward before you see the big landmark tree. Find the area of ​​this square town.

Although the questions are short, they involve quite a lot. In addition to basic number operations, the most important thing is to know the theorem of similar triangles and the solution of linear equations in two variables. It is a moderately difficult question among the nine chapters of arithmetic. , Cai Yong also took it out at will to try to see if Fei Qian really understood arithmetic.

But this difficult question for middle school students was not a problem for Fei Qian at all. He asked Cai Yong for paper and pen, drew a picture, listed the equations, and calculated the answer directly.

Cai Yong stretched his neck and looked at it. You can probably guess that this picture is a schematic diagram, so what are the ghost symbols abcd1234 on the picture? My heart suddenly felt itchy, but I felt a little embarrassed to ask.

Fei Qian had the intention to show off the deceptive 30-yuan math problem in later generations, but after thinking about it, he decided not to do it. After all, the 30-yuan hotel question itself was a bit misleading. It was just a matter of talking about it in ordinary circumstances, like this If people see through this in front of a great Confucian scholar, it will not be fun if the topic is extended to other people. He might be labeled as "cunning" and his life will basically be ruined.

So let’s pretend to be honest. Everyone likes honest people, right?

After Fei Qian finished calculating, he stood with his hands down, acting like an obedient student.

Cai Yongzi weighed it carefully, hesitated again and again, and expressed his affirmation of Fei Qian's arithmetic knowledge, and finally said: "That's fine, I will accept you as a disciple. On the third and twelfth day of the lunar month, you can come to Taixue to listen to my lectures; Fifth, if you have any questions on the 20th day of the lunar month, you can come here and ask, how about it?" A registered disciple is also considered a disciple, and it does not count as a violation of the previous promise. As for whether there will be a chance to become a full-time official in the future, we will talk about it in the future. I will send it off first so that I can take Fei Qian. Ask your baby daughter if she understands the paper that explains the problem.