Luoyang, also called Luoyang, the latter is a name familiar to most modern people, but strictly speaking, among the previous dynasties, there are really few dynasties that really use the name Luoyang. Maybe renaming the place is the default option for every new dynasty? During the Han Dynasty alone, it went from Luoyang during the Liu Bang period of the Western Han Dynasty to Yiyang during the reign of Wang Mang of the New Dynasty, and then to Luoyang during the Liu Xiu period of the Eastern Han Dynasty.

However, no matter how it changes, this is the highest priority that cannot be ignored when successive dynasties set the capital. From Fuxi, Nuwa, Yellow Emperor, Yao, Shun in the mythological period, to Xia Yu, Shang Tang, Western Zhou, and Eastern Zhou, they either spread various legendary stories from here, or built their capitals here or not far away.

First and second, 13 dynasties and 105 emperors ruled the world in Luoyang, which can be described as the real capital of the Son of Heaven.

And now, the emperor who sits in the city of Luoyang and controls the world is Liu Zhi, the emperor of Han Heng. Perhaps most people who like the Three Kingdoms are very unfamiliar with him, but he has a very famous successor, Liu Hong, Emperor Ling of the Han Dynasty. Many people believe that Emperor Ling's incompetence led to the demise of the Eastern Han Dynasty, but compared to the previous Emperor Liu Zhi of the Han Dynasty, Emperor Ling's actions are really trivial.

Sikong Mansion, at this time, Situ Huguang, Taiwei Zhou Jing, and Sikong Xuanyu, the three ministers with the highest status in the dynasty, gathered together, they were not discussing any national affairs, but gathered around a table, watching a man constantly fiddle with one thing. Behind them, there were several ministers, who looked intently at the man and the thing in his hand, not daring to make a sound, for fear of disturbing him.

It took a long time for the man to raise his head, "It's really an artifact used for arithmetic!" It can be used as a substitute for various calculations. ”

The man's name was Liu Hong, and he was well-read in the Six Arts, especially in astronomy and arithmetic. After Xuan Yu received the Jian Ce and things from Huang Fu Gui and the others, he just looked at them a little and fiddled with them, and immediately sent someone to invite Liu Hong, Hu Guang and others.

"Really?!" Hearing this, Xuan Yu and the others couldn't help but be surprised, although they all saw Liu Hong using the abacus to make various calculations just now, and even they themselves tried it not long ago. But just considering the age of the person who invented the abacus, they can't help but be suspicious.

"Seriously!" Liu Hong was not surprised by their doubts, because he didn't dare to believe all this, so much so that he quickly figured out the value of the abacus, but he still couldn't help but make various calculations. But even if he looked at this abacus with the most critical eyes, he could not find any flaws.

"This tool called the abacus is a perfect alternative to the abacus, and even more advanced arithmetic can be performed with a little improvement." Liu Hong said as he twitched with the abacus with both hands, his gentle movements and shining eyes, as if he was caressing his beloved woman.

"Actually, the lowly job has been researching a calculation tool called Youzhu recently, but what the lowly job thinks is too far away from the abacus in front of him!" Liu Hong sighed as he spoke. At this time, in addition to his admiration for Li Yi, there was also a trace of helplessness in his heart.

A thing that was still in his imagination was now made out by a 2-year-old child who had only been in contact with planning for a few days, Liu Hong deeply doubted what he had been doing all these years at this moment. You must know that before, he was full of confidence in arithmetic and astronomy, believing that he was not inferior to any great Confucian in the world.

"I can't believe it......" Hearing Liu Hong's words, everyone sighed together, they naturally would not doubt Liu Hong's words, and the people here are all knowledgeable and talented people, just seeing Liu Hong using the abacus, they have already understood the value of this kind of thing. But just like Liu Hong, they also need an outside voice to tell them that all this is true.

After a long while, Xuan Yucai said again, "By the way, according to Wei Ming and Ran Ming's simple strategy, this kid named Li Yi seems to have invented a simplified number symbol. As he spoke, he took out Jian Ce and showed it to everyone.

"Hmm...... If you do arithmetic in this form, it will be much more convenient, and it is not easy to make mistakes. And these symbols are not only easy to remember, but they can also be combined into any number. In particular, the 0 is not only visual, but also more convenient for calculation. After studying it, everyone was amazed again, but not as eagerly as before.

However, this is also something that cannot be helped, compared to the epoch-making tool of the abacus, Arabic numerals are obviously not so eye-catching.

"Okay guys, now that you've figured out the value of abacus and numbers, let's discuss how to deal with this matter." Xuan Yu clapped his hands and looked at everyone and said in a deep voice.

"This ......" Hearing this, everyone, including Hu Guang and Zhou Jing, frowned.

Speaking of which, Zhang Huan and Huangfu Gui wrote Jian Ce together, obviously they should have gone directly to the emperor, how could they come to Sikong Mansion? In fact, it was very simple, Huangfu Gui and Zhang Huan were worried that this matter would bring trouble to Li Yi, so they first gave Jian Ce to their old acquaintance Sikong Xuanyu and asked him to help him get the idea.

Then the question arises again, whether it is the new symbol of the number or the invention of the abacus, it is a big thing that is conducive to the development of arithmetic, why if you go directly to the emperor, it may cause trouble?

Well, the reason is actually very simple, Emperor Liu Zhi of Han Heng has no son.

Speaking of which, Liu Zhi, the emperor, is still quite pitiful, because it has been 13 years since he succeeded to the throne, and the power of the court has been firmly controlled by his relative Liang Ji. It was not until the eunuchs were used to completely exterminate it that the power returned to Liu Zhi's hands. Therefore, Liu Zhi especially defended the rights of eunuchs, because in his opinion, this group of eunuchs who had already been mortal enemies with the sergeants and doctors of the court, no matter how powerful they were, they could only rely on their own existence.

But maybe it's because he has been a puppet for too long, so after regaining power, Liu Zhi began to live a life of drunken gold fans. For example, this emperor is very, very lustful, but because before regaining power, he only favors Empress Liang. However, after regaining power, the number of concubines in his harem gradually expanded to 5 or 6,000.

Yes, it's the number of concubines, not counting those palace maids or something. But even with such a huge harem, Liu Zhi has only had 3 daughters and no sons over the years.

Hawkers, although Liu Zhi has never shown anything, who is a fool who can be in a high position? But now, is this matter reported or not?