The emperor's inadvertent words made Fang Xuanling immediately cheer up: "Your Majesty, you also found out?" ”

"Hehe, of course."

Nodding, Li Shimin said casually: "King Han has done it so obviously, how can I not find out?" It's not much to play one or two, but it's a lot of playing...... Hehe. ”

After saying a few words, the emperor seemed to sense something and quickly closed his mouth.

At this time, the corners of Fang Xuanling's mouth twitched, and his face quickly became natural, as if he hadn't heard the phrase "I played too much".

However, after a short period of embarrassment, Fang Xuanling's brows also frowned: "What Your Majesty said is very true, in fact, the old minister has already discovered this matter, it seems that the king attaches great importance to this Tianzhu number and mathematics, and has always hoped that more people will use them...... Hehe, don't hide it from Your Majesty, because of the princess, there are many people in our family who are now learning to use Tianzhu numbers, maybe it won't be long before our family will all change to Tianzhu numbers. ”

When he said this, Fang Xuanling was also helpless.

According to his meaning, although the Tianzhu number is very convenient to use, it is not easy to learn, especially the old wife and many old slaves in the family are even more difficult. And in Fang Xuanling's opinion, the things I used before were so good, why do you have to toss these? It's not something important.

It's just that who made his daughter Princess Han?

Knowing that King Han likes this, and it's not a big deal, at least the eldest daughter-in-law in the family has almost learned how to use Tianzhu numbers to settle accounts, which is really convenient, and Fang Xuanling didn't interfere too much. As for whether the subordinates in the family can learn it, or whether it is difficult to learn, he can't care too much.

The master will be all right, you won't be the matter?

But it was precisely because of this that Fang Xuanling, like the emperor, was full of doubts, because he couldn't figure out what his son-in-law was thinking.

Just like this mahjong, it's obviously not as simple as a game.

Especially when playing mahjong with a little color, not only the charm of this game instantly increases, but it suddenly reaches the point where people can be addicted, and the speed of accounting is fast and slow, and it suddenly becomes an eye-catching place on the card table.

If it's a dollar or an integer like ten coins as the reserve price, it's fine, and it's easy to calculate a few times, but if you don't use an integer...... Tsk, when others are still blinking their eyes and desperately trying to calculate, someone can tell the result in one bite, which is very embarrassing.

The convenience of Tianzhu numbers is vividly reflected on this small square table!

"By the way, there are cards and big landlords!"

Suddenly remembering something, Fang Xuanling continued: "But all the games that King Han took out seem to have a little bit to do with Tianzhu numbers, and Lao Chen sometimes even feels ......"

When he said this, Fang Xuanling paused.

And Li Shimin raised his eyebrows slightly, and asked, "What do you think?" Fang Aiqing, say it directly, it's okay. ”

"Yes, Your Majesty!"

After bowing slightly, Fang Xuanling took a deep breath and said with a smile: "Lao Chen sometimes even thinks that the king came up with these games just to let more people know and learn the Tianzhu number!" Including the club that the little girls built, I heard them say that if they want to get in, it will not only cost dozens of times a year...... Well, it seems to be called a membership fee or something, and you must also know the Tianzhu numbers, and you will use them to make simple calculations! ”

"Haha, I know that."

When he heard this, Li Shimin was also happy: "On the day I came back, Changle entered the palace and said, of course, I still think that a few of them are too taken for granted, this is a year and dozens of times and they have to learn mathematics, who would want to join?" Hehe, I didn't expect that before this could be said, Changle said that she had prepared all the money! ”

"Huh."

After listening to the emperor's words, Fang Xuanling also smiled, and his heart suddenly relaxed.

In fact, he was a little worried just now, because even if the so-called club only allows women to enter and never accepts men, there is no doubt that those who can join in are the powerful people in Chang'an - this is something that Fang Xuanling felt a little inappropriate when his daughter-in-law talked about it with him.

In any dynasty, it is risky to engage in such a thing.

After all, even if these women have little influence, they are still members of the family, and if they all add up, they are a lot of power! But now that he heard what the emperor said, even the princess joined in, and Li Shimin's expression seemed to be just an interesting story, Fang Xuanling naturally breathed a sigh of relief.

Merely......

After taking a deep breath, Fang Xuanling said: "Your Majesty, I think that King Han is not the kind of person who acts casually, and everything he does often has a deep meaning, this time...... Chen thinks that this Tianzhu numbers and mathematics may indeed have merit! ”

After a long time, Fang Xuanling's old concept has slowly loosened.

The key is that his daughter and eldest daughter-in-law often praise the ease of use of Tianzhu numbers in front of him, and over time, they have a trace of ideas.

And after listening to his words, Li Shimin pondered for a moment, then nodded and smiled: "I think this is true, just like the salt that King Han once mentioned to me two years ago, who would have thought that he could really dry so much salt from the sea?" Hehe, a few people can make thousands of catties a year...... According to him, after being proficient, he can reach tens of thousands of catties, which is not an ordinary ability! ”

"This ......"

While being stunned for a moment, Fang Xuanling's heart trembled again.

Sea salt?

Although he had long known that Li Yuanjia had sent someone to toss sea salt, he had not heard of this matter because he had just come back from Jiucheng Palace, but as soon as he heard the word salt, Fang Xuanling was a little panicked - if his son-in-law really dared to touch this thing, he would really be asking for trouble for himself!

One salt, one iron, although the court does not interfere, but can you touch it as a prince?

Fortunately, before Fang Xuanling came back to his senses, the emperor had already smiled and said: "When King Han came to the palace yesterday, he said that he wanted to dedicate this method of drying salt to me...... Haha, he's a little clever! But how could I possibly want it? Fang Aiqing, do you know what he is going to do after I refuse? ”

"Well, the old minister can't think of it!"

After listening to the emperor's words, Fang Xuanling's mood was relieved again.

This shock, Lao Fang's heart couldn't stand it a little.

"Haha, Eleven Lang plans to print the method of drying salt into a book and sell it!"

didn't care about the change in Fang Xuanling's expression, Li Shimin just squinted his eyes and said with a smile: "He doesn't care about his identity as a prince at all, so he plans to sell books so openly!" And yesterday he also said one thing to me, that is, the glass, and even wanted to pull me to do this business with him......"