In fact, Cheng Chuliang's niece and son-in-law have been seen by Li Yuanjia before, and the time gap is not too long.

But I've seen it and I've seen it, and the impression is almost none.

So seeing this kid again this time, Li Yuanjia was a little unhappy at the beginning of his niece's marriage to this kid at the age of ten, and soon regained his calm - anyway, in this era, this kind of thing is also very common, nothing surprising.

Anyway, for the royal family surnamed Li and the Lu Guogong Mansion, they all know very well what a ten-year-old girl can and can't do, even if she gets married, she should be well raised, and she will not have a round house until she is about the same age.

So after chatting a few words, Li Yuanjia also put his mind right.

But when he heard the reason why Cheng Chuliang came to find him, he couldn't help but widen his eyes: "What? Do you want to learn math with me? ”

"Yes, King!"

Nodding, Cheng Chuliang said respectfully: "I learned from my father that the king will have something called Tianzhu numbers, and I am very interested, so I want to learn from the king...... Please also fulfill the king! ”

"Oh?"

Hearing him say this, Li Yuanjia's eyes suddenly narrowed, and he couldn't help but be happy.

What did you hear from Cheng Zhijie's mouth?

This kid is mixed with his brother-in-law Fang Jun every day, and he doesn't know how many bad playing cards he has, and now he actually said that he heard about it from Lu Guogong?

However, Li Yuanjia didn't debunk the other party's intentions, but secretly thought about Cheng Chuliang's intentions.

There is no doubt that this was assigned by Lu Guogong.

It's just that Cheng Zhijie expressed his interest in Arabic numerals last time, and sent someone to Xinhua Bookstore to buy so many sets of books back, why did he want Cheng Chuliang to come over and learn from him? Could it be that there are so many people in the Lu Guogong Mansion, and none of them can learn it just by reading a book like Li Tai?

To be honest, Li Yuanjia absolutely didn't believe it.

For the average Chinese people in this era, it is indeed not too easy to learn Arabic numerals by themselves, and to learn those difficult equations by themselves, after all, it is a completely different kind of knowledge. But Li Yuanjia also believes that as long as he has a certain amount of ancient arithmetic knowledge, and then calms down and ponders slowly, he will still be able to fully master the six most elementary school-level mathematics books like Li Tai......

It's up to the sky, that is, the level of the first year of junior high school, right?

The math bigwigs in this year can even calculate pi so behind, Li Yuanjia doesn't dare to underestimate them!

Not to mention that in order to let more people understand these books, Li Yuanjia worked hard and spent several years to finish writing them, in order to let people in this era understand them slowly!

In order to achieve this goal, Li Yuanjia really spared no blood.

You must know that the reason why ancient China has always used classical Chinese and never invented punctuation marks is that in addition to the ruling class's intentional or unintentional desire to improve the conditions and time cost of learning, there is also a very important factor - until the opening of the future industrial age, before the price of paper drops, the cost of writing is so high that ordinary people can hardly afford it!

Classical Chinese is concise enough to save pen, ink and paper, and it can also improve the speed of writing!

And Li Yuanjia wrote books so that people could understand them, so he never spared pen and ink, let alone made a fool of himself in order to show his superior writing.

To put it bluntly, all Li Yuanjia has to do is to know the words and figure them out.

Therefore, he can be sure that even if Cheng Chuliang's brain is not good enough to understand the content of those six books, there are definitely people in Lu Guogong's Mansion who can understand it!

As long as you are willing to take the time, someone will naturally have someone who can easily teach Cheng Cheng sooner or later.

So......

"Cheng Chuliang came here specifically, but it's intriguing!"

Squinting his eyes and glancing at Cheng Chuliang, who had an honest face, a few thoughts flashed in Li Yuanjia's mind in an instant, and his eyes suddenly opened again: "Hehe, you are interested in mathematics, and this king naturally wants to support it...... Haha, in this case, Cheng Erlang can come over when he has time, anyway, this king usually has time! ”

Just now, Li Yuanjia suddenly thought of a possibility.

Learning Tianzhu numbers and those six math books should just be an excuse, this kid...... No, it should be said that the main purpose of Cheng Zhijie should be the method that can double the output several times, right?

But no matter how you think about it, this method is definitely not granted to others casually, even if Li Yuanjia is willing, Lao Cheng will definitely send someone with weight.

The eldest in the family is too moving, and the second child is just right.

So seeing Cheng Chuliang's smile on his face, without waiting for him to speak, Li Yuanjia directly continued with a smile: "By the way, after Erlang finishes learning the six books in the future, I can also teach you a very magical method, as long as you use it to make some more complex things, such as overturning, zigzag plows or something, the speed can be increased several times......

"Huh? Are you sure? ”

Seeing Cheng Chuliang's instantaneous brightness in his eyes, as well as the surprise expression on his face that couldn't be concealed, Li Yuanjia's heart instantly understood.

"Hehe, this old fox!"

Squinting his eyes again, Li Yuanjia smiled.

Want to learn?

I'll teach you!

is still the same sentence, Li Yuanjia is really not afraid that someone will steal technology from his hands, even if it is a good thing such as assembly line and standardization, he will definitely not be stingy, let alone cover it to death like other craftsmen, no one dares to let him know!

In addition to the manufacturing method of glass, which is the technique that Li Yuanjia used to save money, the others can be learned casually!

What a big deal!

After Cheng Chuliang heard his words, he immediately got up and bowed deeply, and said gratefully: "Thank you, such words...... Thank you, King! Chu Liang is indeed very interested in that kind of magical method, and will definitely study mathematics well and strive to learn it as soon as possible! ”

"Hehe, Erlang doesn't need to be polite."

Holding his hands weakly, Li Yuanjia calmly accepted the other party's salute.

This kid is really frank enough.

I don't know if it's because I'm young and can't hide it on my face, or because I know that I can't hide it from others, I just show it directly. But no matter what, Li Yuanjia had a good impression of the niece and son-in-law in front of him.

No matter who it is, as long as you are willing to learn mathematics, it is my brother of King Han!

And......

"Hehe, do you really think these things are easy to learn?"

Looking at Cheng Chuliang, who seemed to have a relaxed face all of a sudden, the corners of Li Yuanjia's mouth couldn't help but show a smile: "Even if you learn those few math books, and then follow Chen Mu and they learn how to use the assembly line to make overturns, you can use this method for other things?" Haha, so naïve! ”

The concept of assembly line appeared not too late in China, why hasn't it been handed down?

Because just learning mathematics, or knowing the concepts of assembly lines and standardization, is still 108,000 miles away from being qualified to use them......