Datang: Ten consecutive draws every week

As soon as he looked up after calculating the account book, Li Yuanfang was grabbed by Xiao Yu’s arm.

“What is it?”

Xiao Yu narrowed her eyes, looking at the abacus with a very strange look.

Li Yuanfang did not answer directly, but asked back with a playful smile.

“Xu Yue, a mathematician in the Eastern Han Dynasty, does the teacher know this person?”

Xiao Yu stroked her beard, and without thinking about it, she told this person’s achievements.

“Xu Yue, how can the old man not know that during the Eastern Han Dynasty, mathematicians first created the earliest auxiliary arithmetic tool – the Youzhu Abacus.”

“The You Zhu Abacus has been lost during the war, and according to the records in various books, it has little to do with what you have in your hands, what are you doing with this?”

Li Yuanfang shrugged his shoulders and shook the abacus in his hand generously.

The beads in the abacus make a clicking sound.

“The object in the disciple’s hand is the upgraded version of the Youzhu abacus, named the abacus, a tool to assist in calculations.”

“Good, good, well done.”

Xiao Yu’s eyes lit up, looking at the slap-sized abacus, and Fu frowned again.

“Why is it so small?”

“Ahem, this is for the disciple’s own use, of course, the disciple has another normal-sized abacus, and I wanted to find an opportunity to give it to the teacher later.”

Li Yuanfang said with some hesitation, but in the end he still told the truth.

“What do you mean by looking for an opportunity to send it?” Xiao Yu raised her eyebrows in bewilderment.

“Hehe, isn’t it afraid that the teacher will say that I am not doing my job.” Li Yuanfang touched the tip of his nose and said with some disinterest.

“So what is a number sign? How can the books be improved in your way…”

With Xiao Yu’s question, Li Yuanfang answered seriously.

The number sign is the Arabic numeral plus the four suggested operations.

Book improvement is double-entry accounting.

Next, the identity of the master and apprentice is reversed.

Li Yuanfang is teaching, Xiao Yu is learning, and time is passing rapidly in teaching.

Xiao Yu is a very smart person, and after learning it, he grabbed Li Yuanfang and went directly to the palace to meet Li Shimin.

……

In the imperial study room, Li Shimin is working.

Now I hear a notification.

“Duke Guogong of Song brought his disciple King Zhou to ask His Majesty.”

Li Shimin was stunned at first, and then he thought about it…

Duke of Song = Xiao Yu, King of Zhou = Li Yuanfang.

Thinking of this, Li Shimin immediately made a decision and Xuanren came in.

“Your Majesty, the old minister has something important to do!”

As soon as Xiao Yu saw Li Shimin, she shouted straight to the point.

Li Shimin was taken aback by Xiao Yao’s serious attitude of eight hundred.

Thinking that this cheap uncle has always been honored and humiliated, but the situation of the dynasty is not conducive to the development of the Great Tang Dynasty, his face has changed.

With such solemnity today, could it be that something has happened?

After some conspiracy theories, Li Shimin was also anxious.

“Xiao Aiqing, what is so serious?”

Xiao Yu clearly described the abacus, double-entry accounting method, Arabic numerals, and simple four arithmetic to Li Shimin, and made a sonorous and powerful conclusion.

“Although these were created by the laziness of the disciples of the old minister, the old minister dared to assert that if these were applied to the Hubu, the heavy workload of the Hubu would be greatly reduced.”

“The work efficiency will increase several times, and now that the year-end inventory is approaching, the old minister pleads with His Majesty to implement it immediately.”

Li Shimin frowned slightly, wouldn’t promoting what Xiao Yu said mean that the household department wanted to reform?

Hehe, the factions in the household are complicated, if it were not for Xiao Yao sitting in the town, the household would have been controlled by the family gate valve long ago.

Once the money bag of the imperial court belongs to someone else, he, the emperor, will be completely passive.

While Li Shimin was thinking, Li Yuanfang pulled his honest sleeve.

After Xiao Yu looked over puzzled, he lowered his voice and asked in a low voice.

“Teacher, are you sure that if you take these things out, Hube Shangshu will not give us small shoes?”

Xiao Yu’s face froze, and she looked at Li Yuanfang with a strange expression.

“Why do you think that?”

“Ahem, Yue Li is looking for a bunch of things for the household department, and it is still during the year-end inventory, it is not strange that the disciple would think so.” Li Yuanfang shrugged and said very innocently.

“Hehe, Hube Shangshu won’t put small shoes on the teacher, but you are miserable.” Xiao Yu was full of black lines and gritted his teeth and replied.

“Uh…” Li Yuanfang said for a while.

Xiao Yu asked again, “Do you want to know why?” You and I are treated differently? ”

“Because Shangshu Tobe is a close friend of the teacher?” Li Yuanfang silently thought that the soldiers came to cover the water and covered the soil, and guessed very cooperatively.

“No, I’m a household! Division! Still! Book! Xiao Yu said word by word.

“！！！” Li Yuanfang’s eyes widened in surprise, so did he offend the teacher.

This episode made Li Shimin laugh.

“Yuanfang, you never knew that Xiao Aiqing was in any position?”

“I don’t know, Brother Chen only thought that the teacher was a calligrapher, and the teacher never mentioned it.” Li Yuanfang shook his head honestly.

“Xiao Aiqing, this kind of disciple who lacks roots, it seems that he will be expelled from the division.” Li Shimin was rarely in a good mood to joke.

“Thank you Your Majesty for considering the old minister, the old minister is confident that he can teach this disciple well.” Xiao Yugang directly rejected Li Shimin’s proposal, in fact, he still liked the clever Li Yuanfang.

Li Shimin laughed again, turned his head and yelled at Feng Le.

“Xuan Changsun Wuji, Fang Xuanling, and Du Ruxi, let them rush to the imperial study as quickly as possible.”

“Obey!”

Feng Lebi replied respectfully and trotted out of the imperial study.

……

In less than two quarters of an hour, the three people who suddenly received the emperor’s order rushed to the imperial study without stopping.

I thought there was something urgent, but who knew that when I came in, I saw Li Shimin and Xiao Yu’s master and apprentice chatting warmly.

For some reason, the three of them suddenly breathed a sigh of relief when they saw such a scene.

Since His Majesty can still laugh, it seems that things are not very big.

Thinking so, the three of them saluted Li Shimin respectfully, and reminded Li Shimin by the way that they were coming.

“Ministers and others attend Your Majesty.”

“Excuse me, the three Ai Qing come and sit, let’s sit down and talk.”

After the three of them sat down, the elder sun old fox cunningly poured tea for his colleagues, and did not intend to make a head bird.

Fang Xuanling glanced at Xiao Yu vaguely, and asked with a little curiosity.

“Your Majesty urgently summoned me to come, the so-called matter is only afraid that it is related to Song Guogong, I don’t know if I guessed correctly?”

“Half of it.” Xiao Yu smiled slyly.

Li Yuanfang intuitively saw an invisible confrontation, but he couldn’t say why.

At this moment, Li Shimin coughed lightly twice, attracting everyone’s attention to himself.

“Xiao Aiqing, don’t sell it, there will be you as a party to explain it to them.”

“The old minister obeys the order!”

Xiao Yu nodded, and once again repeated the words confided with Li Shimin before, and solemnly emphasized the benefits of these things to Hubu and how important they were to Hubu.