Who is Liu Hong?

The leader of the academic world, who is tied for the first place with Cai Yong, actually said that he would accept himself as an apprentice, which is like a huge pie suddenly falling from the sky and smashing it in front of him, fragrant......

Fei Qian just subconsciously opened his mouth, and quickly closed it, well, why does this scene feel a little familiar? Later generations seem to have encountered this situation in the leader's office - it happened that the head of another department came to do something, and it happened that you did it smoothly, praised you for doing it, and said by the way that you want to go to me to do it......

If you agree, then everyone will have a hehe, and then you can only hehe......

Moreover, this was still in the Han Dynasty, a dynasty that paid great attention to the inheritance of teachers. Pen @ fun @ pavilion wWw. ｂｉｑUｇE。 infoThe earlier the age, the more attention is paid to the teacher, unlike modern times, everyone from childhood to adulthood, has experienced countless teachers, primary school teachers, middle school teachers, university teachers, Chinese teachers, mathematics teachers, etc., not counting those sports music or what kind of substitute teachers, so for modern people, there are too many teachers, so there will not be much feeling, on the contrary, in ancient times, a person may have one or two teachers in his life, this difference leads to the importance of teachers is naturally different.

"I almost fell into the pit," Fei said in his belly, "Liu Hong looks dignified, I didn't expect to dig such a big pit for me......"

So Fei Qian bowed his hand and said, "The kid thanked everyone Liu for his love, but the kid already has a teacher." ”

Liu Hong actually didn't want to dig a pit for Fei Qian, but he was a little excited, so he said it casually, but as soon as he blurted out the words, he regretted it a little, and openly dug the corner in front of the victim, even if he was an old friend with Cai Yong, he was a little embarrassed, but fortunately Fei Qian didn't agree, otherwise it would be really difficult.

Seeing Fei Qian say this, Liu Hong also happened to push the boat down the river and pretended to be stupid, "Oh, I don't know where the teacher is?" ”

At this time, Cai Yong coughed dryly twice - Okay, you Liu Hongmo acted, I just told you that Fei Qian is a registered disciple I accepted, or did I call him over, where do you say you will be a teacher?

You think Fei Qian is good, and I think so too, so don't think about it. Before Fei Qian could answer, Cai Yong said, "Ziyuan was recommended by the old man to be with me, and he was accepted as a disciple." This time, Cai Yong deliberately said two words less, and was upgraded from a registered disciple to a disciple.

If no one robs it, don't think so, someone robs it, Cai Yong feels that Fei Qian is actually not bad, looks, although not as handsome as me, but also beautiful, knowledge, naturally not as good as me, but taking something out of the sutra can actually impress Liu Hong, the old guy - in this way, Liu Hong used to show how strong his arithmetic was, and now my disciples have something more powerful than him, this feeling is not too good......

As long as it is a human being, they are all a little careful, and the ancients and the present are the same.

Liu Hong suddenly slapped his forehead and said to Cai Yong: "Ah, I almost forgot, I want to say goodbye to you this time, and I will leave Luoyang soon!" ”

"Why? Didn't you just come back not long ago, what's going on? Cai Yong was surprised.

Liu Hong said: "Hong Bucai, move to Shanyang County too shou, no, the ribbons have been sent." After speaking, he took out the Taishou seal ribbon from his arms and showed it to Cai Yong.

The county Taishou is also a local magistrate who is more than two thousand stones, although Shanyang County is not a big county, but it is not bad, Cai Yong then put his mind at ease and asked: "In this way, when will you leave, I will practice it for you." ”

"Okay, let's stay for a few days." Liu Hong was not polite, agreed, and then took out a square wooden box about a little bigger than a palm from his arms, and gave it to Cai Yong, "Come on, take a look." The tone of his speech was quite like what cherished treasure to let Cai Yong have a long insight.

Cai Yong took a look, the wooden box was made of ebony, and the outside was also painted with a layer of paint, which was quite exquisite, slightly shaky, and there seemed to be something inside.

Under Liu Hong's signal, Cai Yong opened the box to take a look, only to see that the box was horizontally divided into three layers, the top layer was the smallest, the middle and the bottom were larger, and the layers from top to bottom were painted with black, white and red three colors to distinguish, and the box was divided into nine columns longitudinally, and the horizontal shelves together constituted twenty-seven small grids, and between each small grid of the black and red shelves, there were some log beads of corresponding colors, a total of nine black beads, and a total of thirty-six red beads. In the middle of the box, the lattice of the white shelf was empty.

"What is this?" Cai Yong frowned, although he didn't know what this box was for, he still had a sense of familiarity for some reason, but he couldn't grasp that familiarity for a while......

Liu Hong stroked his beard proudly, and looked at Cai Yong's painstaking thinking with enjoyment - I am so fortunate and have spent so much effort to come up with wonderful things, how can you guess it in a while?

Fei Qian looked at it from the sidelines, and also felt that he seemed to have seen this form somewhere, and he was also guessing what Liu Hong's thing was for—but it was certain that this thing must have something to do with mathematics, and a character like Liu Hong would definitely not be bored enough to give a treasure with any toy.

Cai Yong casually picked up a black bead from the top layer of lattice and put it in the middle of the lattice in the white lacquer area in the middle, looked left and right, still didn't guess, and then took a red bead and put it into the white lattice......

Fei concentrated his mind suddenly, black beads and red beads, layered up and down, and placed in the middle...... What does this model look like? Fei Qian had a flash of inspiration and blurted out: "Abacus!" ”

Liu Hong, who was caressing his beard proudly, was shocked when he heard this, and his strength couldn't help but increase, he even pulled down two of his beards, turned his head and asked Fei Qian: "How do you know?!" ”

"Abacus?" Cai Yong muttered and said, and immediately reacted, this is not to change the long calculation chip into beads, and then put it in the box, like a plate, "Haha, so, it's an abacus, I have already guessed it......" - of course, he still held on to his face, but he was really admired by Liu Hong's whimsical ideas.

Most people in the Han Dynasty still used the calculation chips to count and calculate, and the so-called "chips" in ancient times referred to the calculation chips.

The counting chip is actually a small wooden stick, according to personal habits, it can be divided into two counting modes, one is the horizontal chip counting, and the other is naturally the vertical chip counting, which is very complicated to say, in fact, it is the number "one" that is the calculation chip is placed horizontally or vertically.

But after all, there are congenital defects in the calculation, such as inconvenient to carry, easy to lose, accidentally bumped into the middle of the calculation, and there may be times when the calculation is halfway to stop to do something, and come back and forget whether you are counting according to the horizontal chip or the vertical chip, and you have to start from scratch again......

Liu Hong himself is an arithmetic master, for these problems is very painful, therefore, he pondered again and again, invented this tool, the root of the calculation chip simplified into abacus, the red beads represent one, the black beads represent five, the white area is used for calculation, each column represents a single digit, nine columns can be calculated to the level of hundreds of millions, to meet the needs of counting to the greatest extent.

For the first time today, I took out the finished product and put it with Cai Yong, but I didn't expect Cai Yong to recognize it, but was broken by Fei Qian next to him, how could this make Liu Hong not surprised?