When Wen Tiren and Xu Guangqi heard this, they no longer advised, but waited for the emperor's answer with a little curiosity. After all, there is a lot of difference between this Daming banknote and the previous Daming treasure banknote, what is the mystery in this?

Hu Guang smiled when he heard this, pointed to the banknotes in their hands with his hand and said: "This banknote is designed for the daily use of the people, so it is considered in terms of size and durability. In addition, the pattern on this is this copper coin and copper string, I believe I don't need to explain it. Inside that square hole is the number writing method on the side of Da Shi, which is very simple and practical, and I decided to promote it in Daming in the future! ”

When Xu Guangqi heard this, he secretly said in his heart that His Majesty really knew a lot about Xiyi. When Wen Tiren heard this, he frowned, but he didn't object, he just asked, "Your Majesty, I don't know where this number is convenient?" ”

When Hu Guang heard this, he took a brush and wrote it casually. Soon, Fang Zhenghua handed over the paper on which he wrote to Shousuke, and at the same time said: "This kind of number will be very fast in terms of counting, especially when the number is very large." That's a few examples I showed Qing, including addition, subtraction, multiplication and division, all of which are simple and straightforward, and much easier! ”

Wen Tiren didn't recognize 0 to 9, and Hu Guang gave it to the writing habits of later generations, there are four examples of addition, subtraction, multiplication and division, all of which are numbers above 10,000, which confused him.

Xu Guangqi, who was on the side, stretched out his head to take a look, but he understood a little, and couldn't help but be a little surprised: "Your Majesty, is this result accurate?" ”

When Wen Tiren heard this, he was a little curious and transferred the piece of paper to Xu Guangqi. Then he turned to look at the Emperor and waited for an answer.

Bi Ziyan is a household secretary, and dealing with numbers is also commonplace, so he is also interested in this, so he stretched out his head to look at it, but he didn't recognize it like Wen Tiren.

When Hu Guang heard Xu Guangqi's question, he smiled and said, "Xu Qing can calculate, do you want me to read those numbers to Qing?" ”

"The minister recognizes these numbers!" Xu Guangqi replied, and then regardless of whether the emperor was polite or not, he immediately lowered his head and began to calculate.

When the other two saw it, they looked at Xu Guangqi with a little curiosity, staring at his expression, waiting for his conclusion.

After only a while, I saw Xu Guangqi blushing a little and raised his head and said, "Your Majesty, the results of the previous two sets of additions and subtractions, there is no problem with the minister's verification." But this latter multiplication and division ......"

He paused when he said this, and then stood up and bowed and said, "Please also ask Your Majesty to give the ministers an abacus!" ”

This Xu Guangqi is worthy of being obsessed with academics, even in front of the emperor, in order to get accurate results, he doesn't care about face, he must get a letter on the spot.

But when he behaved like this, the two people on the side were taken aback. Xu Guangqi had to use an abacus to get the result, but the emperor just brushed it a few times, and the result was already on paper. If the results are correct, the gap seems to be a bit wide.

Hu Guang naturally had no opinion on this request, and immediately nodded and ordered Fang Zhenghua to come over with an abacus.

Xu Guangqi's arithmetic is also very good, the abacus in his hand, crackling, there is a result immediately, and after checking again, he can't help but worship: "The result is correct, Weichen thinks that this method is worth promoting!" ”

As soon as these words came out, Wen Tiren and Bi Ziyan were surprised. I didn't expect the arithmetic on the side of Da Shi to be so powerful, with just a pen, he didn't need an abacus to quickly calculate the result.

At this time, the open-mindedness of the Ming Dynasty is far from being comparable to the Manchu Qing Dynasty in later generations, and for new things, even barbarian things, as long as they are really good things, they will accept them.

For example, Xiyi's artillery, such as the Japanese Kou's bird guns, were better than Daming at that time, and Daming did not hesitate to buy imitations.

Hu Guang smiled slightly after hearing this: "Promotion is a matter for your Ministry of Rites, and Qing has a good life plan." I will also compile a copy of this related content for you, including further knowledge of arithmetic such as squares, squares, etc. What I said before is not just a casual one. ”

Wen Tiren and Bi Ziyan were a little inexplicable when they heard it, the two of them didn't understand it at all, and they didn't know what was going on. But Xu Guangqi remembered what he said on the arrow tower of Deshengmen that day, and when he was about to express his position, he heard the emperor ask him: "Have you sorted out the things I asked Qing to sort out before?" ”

"The minister has already sorted it out, but these days, seeing that His Majesty is busy with military affairs, the minister wants to revise it again." Xu Guangqi's expression replied with a little excitement. At this time, he already believed that the emperor was really powerful!

Hu Guang nodded and said, "Okay, I'll present it, and I can take a look when I have time." ”

After speaking, he pulled the topic back, glanced at the other two, and then continued: "The picture on the back of the banknote, and those words, I made a decision after careful consideration. And guess what it is? ”

As soon as he heard this, Shoufu Wen Tiren had already thought about it before, and immediately replied: "Your Majesty, this back pattern is a Sanchen pattern. Since ancient times, the Sanchen flag is the flag of the Son of Heaven, printed on this banknote, which should indicate that the Ming banknote is the object of the Son of Heaven, and no one is allowed to destroy it......"

"......" Hu Guang was speechless when he heard it, well, it seems that this explanation is not bad.

"It's just...... It's just that the light of the stars seems to be slightly different from the pattern of the Sanchen flag, and the color is also different. The old minister is stupid, I don't know what it means? Wen Tiren hesitated slightly, in fact, he originally wanted to say, is this star light drawing wrong?

When Hu Guang heard this, he immediately shook his head and smiled, and directly solved the mystery and said: "This picture is indeed evolved from the Sanchen Banner, but it has another meaning. For the full version, you can see the back of more than one or two silver banknotes. ”

Seeing that the three courtiers were all looking at it with a little curiosity, he continued: "The overlap of the red sun and the yellow moon is a Ming character, which is the name of my Ming dynasty. The light of the stars on the periphery changed to red, which also refers to the light of the sun, which implies that my Ming belongs to the fire virtue. ”

Hearing what the emperor said, the three of them looked at it, and sure enough, it was a coincidence that they thought that the banner of the Son of Heaven had something to do with the Ming Dynasty!

"The twelve rays of light refer to the twelve hours of the day, the twelve months of the year, and the light is located above the blue sky, indicating that the glorious moments of my Ming Dynasty are shining in all directions."

That's a good statement! When the three of them heard this, they couldn't help but nod their heads and praise secretly.

"The four sharp big horns in the red light, pointing to the four directions of up, down, left and right, are the polar earth, which does not mean concubines, and can also represent the four dimensions called in "Guanzi Herdsman", that is, etiquette, righteousness and shame."

The heavens and the poles, the meaning of not being a concubine is as far as the end of the world, and there is no one who does not submit to my Ming Dynasty with the courtesy of ministers and concubines. This is from the stele of "The Record of the Heavenly Concubine Lingying", which is commonly known as the stele of Zheng He. This meaning, the three courtiers in the imperial study naturally understood, this was a good sign, and they nodded again.