After leaving the palace, Li Yu went directly to the household department and handed the paper to the people in the household department.

Lu Tong was shocked to see that Li Yu had really made paper.

"The prince is really powerful, now that I have these papers, it is not only convenient to write, but also convenient to store, the prince is so powerful."

Lu Tong rarely praised people like this, but the appearance of the paper really shocked him.

With these things, it is much more convenient to record, those bamboo pieces, a piece can write a few words?

Moreover, if you put it after writing, it is hundreds of catties in hundreds of catties, and it takes a lot of warehouses to store these bamboo chips, but these papers don't need so much space.

Everyone was a little shocked when they saw Lu Tong like this, because they knew Lu Tong well and knew that Lu Tong rarely admired other people.

"Okay, Lord Lu doesn't want the king to pay that money."

"How dare you, how dare you, what the prince invented is beneficial to all the people, and it is beneficial for thousands of years, even if there is more money, there will be no problem."

Li Yu smiled, Lu Tong admired himself psychologically, this is a good sign of subduing him.

However, you can't rush it yet, and you have to take your time for some things.

"I've seen the numbers you calculated, one, two, three, and so on, and it's still a little too cumbersome to calculate, so I invented a symbol for you. You all learn the number symbols, which will help you improve your efficiency. ”

"Numeric symbols?" Everyone was a little shocked, they had spent most of their lives like one, two, three, four, and suddenly let them learn number symbols, they were really a little unaccustomed to it.

Li Yu didn't care about them, and said, "Look at it, this is 1, this is 2......"

Li Yu told them about the numbers 0123456789, and then talked about the usage and everything, although it sounded a little troublesome at first, but many bookkeepers are very good at this and are extremely sensitive to numbers.

So when they understood it, they immediately noticed the convenience of using this symbol.

Not only is it convenient to write, but also when calculating, these numbers give people a more intuitive impact.

Lu Tong can achieve the position of the head of the household, and he naturally understands some of the situation of the household department, and the accounts are naturally not a problem.

So he learned Arabic numerals very quickly, and when he learned this, the whole person was stunned, and the eyes when he looked at Li Yu were weird.

Amazing.

He never thought that this King Yongde was so sloppy when he was the prince before, why did he go to Shuozhou and suddenly become so powerful?

"Lord Wang, this number symbol is so easy to use, I will propose to the Holy Lord to promote it throughout the country, but why did the Lord invent these symbols?"

As soon as Lu Tong said this, everyone else was also curious, why did Li Yu invent these symbols?

This question stumped Li Yu, you can't say that this thing is a very ordinary thing in the later life, right?

The invention of numbers should always have some story.

"Actually, this is also thanks to the fun of this king before, this king used to play everything, often used some symbols to replace some numbers or something, and then slowly groped, and found out these symbols, you think it's easy to use."

Hearing that it was invented because of the previous playfulness, these people in the household department didn't know how to describe it.

People are playful, and they can invent such powerful things?

It's so unreasonable, the prince is the prince, and it's different from ordinary people like them.

-----------------

Arabic numerals were soon reported to the imperial court by Lu Tong.

Li Yuan was shocked when he learned that his son had not only invented paper, but also created a better number symbol for calculation.

After he learned it, he couldn't believe it, and hurriedly ordered people to spread it throughout the country.

In the future, with this kind of symbol, it will be much more convenient to calculate all kinds of things.

And just when Arabic numerals were being promoted in the Tang Kingdom, the spies sent out by Li Qing before finally came back.

"Lord Wang, we have investigated the situation of Zhao Qiansun, the secretary of the Criminal Department."

When Li Qing heard the situation of Zhao Qiansun, the secretary of the Criminal Department, he was a little overjoyed and asked, "What's the situation?" ”

"There are several unjust, false and wrongful cases under Zhao Qiansun, and we have already collected all the evidence or something." The spy said that he would submit the evidence, and after Li Qing read it, he was even more pleased, because the evidence was very sufficient.

For example, in one of the cases, the son of a wealthy businessman killed someone, and the rich businessman paid to bribe Zhao Qiansun in order to save his son.

And the evidence is that the son is now under the monitoring of the spies, and as long as these reports are reported, the son of the rich businessman can be found at any time.

Isn't it evidence that a person who has been beheaded is still alive?

Of course, in addition to these, there are also many unjust, false and wrongful cases of all kinds, and this Zhao Qiansun's ability to judge cases is not good.

"Straighten out the evidence in these cases for this king, and then check some one by one, and hand it over to Wu Ming of the Yushitai after confirming that it is correct, and let him impeach him in the court, remember, you don't have to take out all of them for impeachment, just use one or two of the most direct evidence, and the rest, after Zhao Qiansun is impeached, it will soon be pulled out, so that the effect is faster."

If there are too many cases raised at once, it will easily arouse people's suspicions, and if these cases are retried one by one, Zhao Qiansun will have more time to live.

If a person lives for a long time, there will be accidents, so he must decide the case as soon as possible, use one or two to decide the case first, and after the case is finalized, the others can be taken out to assist.

The spy took the order and retreated.

And just after the spies left, Li Qing called Du Ruhui again.

"Mr. Du has always been good at making decisions, after Zhao Qiansun is impeached, the position of the secretary of the Criminal Department must be vacant, can Mr. Du go to the Criminal Department?"

Du Ruhui still has a little ability to judge cases, of course, in addition to judging cases, he is even better at deciding things, and now the secretary of the Criminal Department is about to vacancy, and Li Qing's subordinates, only he has this ability, and he has this qualification.

Thinking of this, Du Ruhui did not refuse, and said, "The prince commanded, and his subordinates naturally tried their best to fight for it." ”

"Okay, as long as Mr. Du is willing to go, this king will definitely help you, the operation of this king, coupled with Mr. Du's ability, the criminal department book must be yours."

For this, Li Qing is particularly confident.

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