Three Kingdoms

Liu Hong couldn't believe it. How could you, Feiqian, know this thing at such a young age? Besides, I just made this, how could Fei Qian know about it? Are there really people who are born smart?

Fei Qian looked at the "abacus" and finally understood why he always felt an awkward sense of familiarity. The reason for the familiarity was that he had learned this calculation method when he was in elementary school. The awkward thing was that the abacus held beads one by one. Put it into the grid in the middle layer, instead of stringing a wooden stick between the beads to move it up and down.

"Why not string them together with wooden sticks?" Fei Qian thought so and said it casually.

"What stick to use?" Liu Hong asked Fei Qian in confusion. Is there any shortcomings in this abacus that I worked so hard to come up with?

"This..." Fei Qian hesitated. Could it be that I ordered some strange technology tree?

When was the ancient Chinese abacus finalized? Tang Dynasty or earlier? Anyway, it must have existed in the Song Dynasty. I remember that the painting Along the River During the Qingming Festival showed an abacus placed on a shop counter. The form is basically the same as that of modern times.

If we figure this out now, it shouldn't have any impact, right? Fei Qian thought to himself, but he had already said his words and couldn't take them back, so he simply asked for a piece of paper and drew out his plans for future generations.

Liu Hongkan waited for Fei Qian to finish the painting and grabbed it before Cai Yong. He kept nodding and praising, "Yes, why didn't I expect... In this way, I won't be afraid of losing it. Besides, The pearls of the same pillar, the heaven and the earth are added to the human body, tsk tsk...wonderful! Wonderful!"

"Heaven and earth increase in man" actually means that the top row of beads is called Dzi beads, and the beads at the bottom are called Earth beads. When calculating, it is Dzi beads plus Earth beads, which coincides with the three talents of heaven, earth and man, so it is said like this.

However, Liu Hong also found something he didn't understand. Pointing to the abacus drawn by Fei Qian, he said: "Why do we need to increase the number of Dzi beads to two and the earth beads to five?" - If modern abacus uses decimal system, in fact, the top bead and The bottom one was not used, but Fei Qian drew it directly in the form of a modern abacus without much thought.

Fei Qian didn't know why the modern abacus added these two unused beads, so he said: "Five beads on the bottom carry one, and two beads on the top carry two, so it's easier to calculate."

"The lower beads are five and one is forward, and the upper bead is two and two are forward..." Liu Hong nodded and then shook his head. Fei Qian didn't know whether Liu Hong agreed with him or not.

In fact, Fei Qian is not a professional after all, and he does not know the development history of abacus, so he naturally does not know the evolution of abacus.

In the development process of abacus, it gradually spread from a small number of people who studied mathematics to a large number of people who need to deal with numbers, and a large part of them are businessmen. Moreover, in ancient times, there were not only decimal calculation modes, but also hexadecimal calculation modes. For example, in ancient times, one pound was sixteen taels, etc. Therefore, in order to facilitate hexadecimal calculation, merchants added one heaven and earth beads to the ancient abacus. In this way, the total number of heaven and earth beads equals fifteen, which can be used As for decimal, you can also use hexadecimal.

Liu Hong stared at Fei Qian with bright eyes. If he wanted to accept Fei Qian as his disciple just casually, now he really has this intention. This guy is good at arithmetic, and he improved the abacus that I took so long to figure out in just a moment. Alas, how could I be overtaken by Old Man Cai?

Cai Yong also saw something coming from the side, thought about it, and simply said: "Ziyuan is my new recruit. Although he has already entered the school, it is not an auspicious day. It coincides with the autumn classes of Taixue tomorrow, so let's just salute him together." Yuan Zhuo, if you have time, would you like to pay homage to me?"

In the Han Dynasty, Taixue usually admitted a batch of new students in spring and autumn, which were the so-called spring classes and autumn classes. Taixue had experienced the calamity of Party imprisonment before and had been closed for a period of time. Later, Emperor Ling of the Han Dynasty rehabilitated the Party and naturally reopened Taixue.

Liu Hong looked at Cai Yong, nodded, sighed, and immediately said: "Of course he will come." - Now there was no hope at all. This guy was Cai Yong's and he couldn't be snatched away. It’s just that, hehe——

When Cai Yong saw that Liu Hong had agreed, he didn't say anything more and told Fei Qian to go get ready. Don't waste time tomorrow and let Fei Qian go back first.

When Fei Qian left the Cai Mansion, he still felt a little unconvinced. It had only been a few days, but it seemed that he had been upgraded?

Just now Cai Yong said he would go back and prepare. What should he prepare? Naturally, it is the ceremony of apprenticeship, which means that as long as Fei Qian performs the apprenticeship ceremony at Taixue tomorrow, he will get rid of the word "name" and become Cai Yong's true disciple.

This happiness really doesn’t come suddenly...

However, Fei Qian suddenly thought of a question and couldn't help but feel dizzy. He was originally planning to leave Luoyang in a few days on the grounds of studying in Jingxiang, but now he has been accepted as a disciple by Cai Yong. If he adds this reason, it becomes a joke. Then how can I leave Luoyang?

If you can't leave, how can you save your life in this turmoil?

This is really a plan that can never keep up with changes. What should we do?

******************

In fact, Fei Qian is not the only one who has troubles now.

Yuan Wei is one of them. He was also very troubled after Yuan Shao resigned and ran away.

Yuan Shao's departure was no less than making the dispute between the Yuan family's descendants known to the world. In fact, this matter is inevitable for every aristocratic family, but most of them are digested silently within the family. Very few actions like Yuan Shao make people all over the world know about it.

And the most important thing is that he was also taken advantage of.

Dong Zhuo's husband actually gave that treacherous son the title of Bohai Prefect! This made it clear that the two sons of the Yuan family were going to fight each other, but it was a pity that Yuan Wei could not say no.

The Yuan family has always been on the surface to put the world's commonwealth first, and is a sign of Qingliu. Now Dong Zhuo, in the name of the court, said that although Yuan Shao had minor faults, he could still be used, so he worshiped the governor of Bohai to protect the good people, eliminate banditry, and make up for his faults. …

Every aspect is blocked, what else can Yuan Wei say? Not letting Yuan Shao serve as prefect? What's the reason? Are the children of the Yuan family incompetent? Don’t you want to serve the imperial court? Or don't you want to make up for your mistakes? Or should we immediately issue a pursuit warrant and pursue him thousands of miles away?

Although Yuan Wei really wanted Dong Zhuo to pursue him for thousands of miles, the laws of the Han Dynasty stipulated that it was reasonable and legal for relatives to hide each other. Could it be that Yuan Wei could go against the laws of the Han Dynasty and really kill the relatives?

This kind of righteous killing of relatives was really not a good word in the Han Dynasty. Do you want the Yuan family's reputation? So Yuan Wei had no choice but to hold his nose and admit it.

However, Yuan Wei was unwilling to let Dong Zhuo and Li Ru mix sand into Yuan's house, so he ordered his servants to summon Yuan Shu.

Since we can no longer hide it, let’s just put it on the table openly! Let everyone in the world see the courage of my fourth and third generation, the Yuan family!