"Uncle, please be seated!"

Although I don't know who Fang Xuanling is, I saw that the other party had an extraordinary temperament, and the person who came was a guest, so I naturally invited him in first.

"Your Excellency is Tang Ping, the proprietor of Shanghe Village, right?"

At this time, Fang Xuanling also thought about it, at that time, it seemed that this Shanghe Village was rewarded by the emperor to Li Jing, and then Li Jing said that someone was kind to their family, and begged the emperor to transfer the village out, and this procedure was also saved from his door.

However, at that time, the Turks had just been defeated, and everything was complicated, and this kind of thing was not important to them, and it was over.

But now that the short time has come, he doesn't dare to underestimate the young man in front of him anymore.

Speaking of which, this young man should be about the same age as the one in his own family, but how can he be someone else's child?

"It's Tang Ping again! What do you call an uncle? ”

"Just call me Uncle Qiao!" Fang Xuanling took the tea from Lu Yi, and glanced at Lu Yi in surprise, why did he seem to have seen this girl somewhere?

Later, I thought that it might be Li Jing's mansion, after all, this was given to Tang Ping by Li Jing, and it was normal to send him one or two maids.

It's just that I don't know why this Tang Ping is kind to Li Jing's family, so that he can give land and give people away.

"Where is Uncle Qiao from? Are you from Chang'an? ”

"Yes, I live in Chang'an, and the weather is good today, so I'll go out of the city to go around." Fang Xuanling took a sip of tea, and his heart moved slightly, this tea is sweet and sweet, and it is completely different from the tea that everyone usually drinks.

"This tea ......" At this time, he saw that the tea in his teacup was pale and clear.

"Hahaha, it's mainly you guys...... I'm not very used to the tea that adults drink, so I make it simply. ”

Datang will still boil tea, and the tea in it is ground into powder, and then a lot of seasonings will be added, which is very different from our modern tea that is directly brewed.

At that time, Tang Ping was curious to buy some, and asked Lu Yi to get it once according to Datang's practice, and then he never mentioned drinking Datang's tea again.

"Yes, it's not bad!" Fang Xuanling took a look back, although the taste was not as good as the kind of tea he usually drinks, but as he said, it does have a different flavor.

This Shanghe Village really reveals a different feeling everywhere.

"Just now outside, I heard the ...... worn by the villagers of Shanghe Village"

"Overalls!"

"Yes, overalls, that was also invented by Childe?"

"No, I just bought it."

"Bought?" Fang Xuanling asked suspiciously: "I don't know which tailor shop made it?" ”

Although the style of the clothes looks weird, but after thinking about it, he can find that it is extremely capable of work, if there is such a tailor shop near Chang'an, it makes no sense that he doesn't know.

"Well, I didn't buy it near Chang'an......"

"Oh!" Fang Xuanling nodded, this will be the Tang Dynasty is already very developed in the surrounding countries, he thought that Tang Ping said that he bought it from a certain foreign caravan, so why does the style feel so strange It makes sense.

"And you have this line all the way to the river?"

"It's an electric light, so that the villagers can see the road after dark." Tang Ping felt that there was nothing to hide from this thing.

"Light the lamp?" Fang Xuanling nodded again: "Tang Dongzhu has a heart, and he can light the villagers at night, which shows benevolence!" ”

Although Tang Ping was a little surprised why Fang Xuanling was so calm about the electric light, he didn't ask much.

It can only be said that the two chatted across channels this time, which was very successful, and no one deducted money for the homophonic stalk anyway.

"Just now outside the courtyard, I accidentally heard the question between Tang Dongzhu and the noble apprentice, the noble apprentice is quite proficient in arithmetic!"

That's the question he wants to ask right now.

You must know that the province deals with national affairs, and there are many places where arithmetic is used.

How else can we say that mathematics is the foundation of everything?

Li Bai's calculation speed just now is beyond the reach of many officials in the province.

"Isn't that the question in Sun Tzu's arithmetic?"

"Sun Tzu's reckoning?" Fang Xuanling asked suspiciously: "Sun Tzu, I know, the soldier is a soldier saint, there are thirteen articles on Sun Tzu's Art of War, but I have never heard of Sun Tzu's arithmetic?" ”

Fang Xuanling is eighteen years old and a scholar, and he can be regarded as well-read, but this grandson is the first time he has heard of it.

"Uh......" Tang Ping didn't know how to answer this question, this question is nothing for modern students, and he also saw that this was the question on Sun Tzu's arithmetic when he was in Baidu that day, and Sun Tzu's arithmetic should have been written more than one or two hundred years ago.

It's just that now it seems that there is no such book in this world, last time he asked Li Bai, Li Bai said that he hadn't read it, and he thought it was because he read less books at his age.

"I wonder if this grandson can lend me a look?" Fang Xuanling also felt a little abrupt after speaking, and hurriedly added: "I can exchange it for other books or things." ”

If it was something else, he wouldn't be so excited, but this book is called the Book of Calculations, and it must be about arithmetic, and the level of arithmetic that Li Bai showed just now made him feel that if it can be popularized, if nothing else, at least it will be very beneficial to the office efficiency of Menxia Province.

If Tang Ping had this book, he would definitely have given it, but the point was that he didn't.

And in terms of his level of mathematics, the content of the arithmetic book is too pediatric, and now the baby in Shanghe Village can solve the above problems in almost a year and a half after studying here with him.

Fang Xuanling looked at Tang Ping's appearance and thought that he was unwilling, but it was not surprising to think about it, many things are passed on to men and not to women, let alone to an outsider?

At this moment, the system in Tang Ping's mind suddenly spoke.

"Side quests, let the seeds of mathematics take root and blossom in Datang!"

"Failure Penalty: None!"

"Reward for completing the mission: a blind box."

"A blind box?" Tang Ping was speechless: "What the hell is in it?" ”

"It's said that it's a blind box, of course you have to open it to know!"

Well, it's very systematic.,Such a task.,There's no punishment for failing anyway.,As for the reward for completing the task, although I don't know what it is.,But it's better than nothing.。

And such a task is indeed easy for Tang Ping to complete.

Asked Fang Xuanling to wait a while, and went upstairs and turned out the abacus he used to use when he was in school, and it also came with the abacus mantra at that time.

At this time, the most commonly used calculation chip is still the calculation, which is still much worse in efficiency than the later abacus.

Tang Ping felt that he couldn't teach things that were too troublesome, and it was rare to be troublesome with his salted fish character.

As long as this abacus and Arabic numerals can be promoted, he feels that it will greatly promote the development of arithmetic in Datang.

So all afternoon, Tang Ping was teaching Fang Xuanling a math class, because the uncle said that he worked in the government department, and there were many places where he had to use arithmetic in his work.

It just so happened that Tang Ping could start to promote mathematical knowledge from him.