Li Shimin and the others nodded suddenly.

The so-called art industry has a specialization.

Just because you've seen it doesn't mean you can make it......

I understand, I understand, but this is itching!

Especially Li Shimin.

Just now, I was fantasizing about punching the Turks and kicking Goguryeo, but now my dream is shattered......

Li Shimin has a lot of resentment in his heart.

Cao Ze, you're too much!

If you can't teach, why speak up?

You can't get up to me now, do you know how uncomfortable I am?!

I'm in the groove!

No, Cao Ze, you have to be responsible for this!

"Actually, you don't have to be depressed." Cao Ze smiled slightly: "If you don't have it now, it doesn't mean that you won't have it in the future." And I can teach you a little bit of something else now. ”

Cao Ze said as he received the things on the table into the system space.

Then he took out a pen, ink, paper, and inkstone with his backhand.

"You should have learned nine chapters of arithmetic or something, right?" Cao Ze gestured: "These are collectively referred to as mathematics on our side, and this mathematics is the language of science, and it can also be regarded as the foundation of all scientific disciplines. ”

Hearing this, Cheng Chumo subconsciously shrunk his neck.

it!

That's not right!

Immortal Master, you're not kind!

Well, how do you look like you're going to class?

……

"What I'm going to say now is a kind of simplified number." Cao Ze said as he wrote crookedly on the paper with a brush.

Soon, the numbers 0 to 9 appeared.

Below the number is the corresponding Chinese character.

"What does the immortal master mean that these symbols are the corresponding numerical abbreviations?" Li Tai asked curiously.

"Hmm." Cao Ze nodded: "These numbers are simple to write, and they are very convenient for daily use. ”

"If it is used for national and military bookkeeping, it can also greatly reduce human and physical consumption." Li Shimin immediately grasped the key point.

Not to mention anything else, this thing is easy to write and save paper!

"No, no, no." Cao Ze hurriedly said: "These are okay for daily life, don't use them for accounting!" ”

"Immortal Master, why is this?" Li Shimin asked puzzled.

"I'll show you how this thing can be used in action." Cao Ze replied and continued to write.

After writing it, he explained it to everyone again.

"You see, that's the biggest difference between numbers and Chinese characters." Cao Ze gestured: "The eleventh of the Chinese character is written like this, and the number is arranged and combined. ”

After Cao Ze finished speaking, he casually added another 1 next to 1.

"I see." Li Shimin nodded suddenly.

The biggest drawback of this number is that it is too easy to fake and move!

If this is applied to the country and the army, then it will be a lot of fun.

It's not a big problem, though.

You can still use the original method for bookkeeping, but the process can be replaced by this number.

It can also save a lot of manpower and material resources!

Then Cao Ze explained the calculation method of addition, subtraction, multiplication and division in the form of a formula on paper, and Li Tai listened with relish throughout the whole process.

"Now that the basic usage is over, let's take a practical application."

After Cao Ze finished speaking, he directly threw out the typical binary equation of chickens and rabbits in the same cage.

Li Tai's eyes lit up after listening, and he took the pen and paper and reviewed.

Cao Ze breathed a sigh of relief when he saw this.

I was patronizing and flickering just now, and I accidentally didn't brake the car.

Fortunately, I was witty and changed the topic with Arabic numerals......

But Cao Ze is not worried.

In the previous lottery, the icon of a car and an airplane was displayed, and there must be something about technology in the prize pool.

It's either a theoretical knowledge design diagram or something, or it's a physical object.

Either way, you can turn around and throw it yourself.

At that time, Li Shimin estimated that Le's snot bubbles had come out, so how could he care about the rest......

Seeing that there was nothing to do, Cao Ze led everyone to the room where he had squeezed oil before.

Now that the business has been negotiated, the method of oil extraction should naturally be handed over to Cheng Yanjin.

Anyway, Li Shimin and they are not outsiders, so it's nothing to let them see.

"This is the key thing that the Immortal Master said before?" Looking at the oil press that Cao Ze took out, Cheng Yanjin said with curiosity on his face.

"What I invited you to eat before was called stir-fry." Cao Ze nodded and said, "And the most important thing for stir-frying is this cooking oil." ”

Then Cao Ze demonstrated the process of oil extraction.

Looking at the fresh soybean oil dripping from the oil outlet, everyone couldn't help but sniffle.

It smells so good!

No wonder those meals were so delicious before, it turns out that the secret is here!

Then there was a burst of emotion in everyone's hearts.

The working principle of oil presses is not complicated, and soybeans are also a common thing.

But Cao Ze just used this ordinary object to make something incredible!

This is often the case in the world.

Some things are incredible when you see them, but after you understand the principle, you find that it is so simple!

At the end of the day, I just didn't expect it......

Thinking of this, Li Shimin felt more and more that Cao Ze's brain was a super treasure!

If this is used well, the future development of Datang will never be imagined!

And he, the emperor of the Tang Dynasty, will also receive unprecedented honors!

Even......

It is not impossible to surpass the First Emperor!

Thinking of this, Li Shimin felt that his breathing was a little short......

Steady!

I'm the emperor, pay attention to the appearance!

……

"Lu Guogong, I'll have someone send it to you when I get things back." Cao Ze signaled: "Go back and send a few trustworthy cooks, and I will teach them how to stir-fry." ”

At this point, the matter of the restaurant is finalized.

The rest is Cheng Biting Jin's business, Cao Ze just needs to wait to count the money.

Seeing that there was nothing to do, Li Shimin and the others were ready to leave.

Before the "Immortal Master ......" was about to leave, Li Lizhi blinked and looked at Cao Ze with wide eyes: "Will we really be able to fly to the sky in the future?" ”

"If you have the chance, you should be able to." Cao Ze replied vaguely.

Li Lizhen seemed to want to say something, but she didn't speak again after all.

Looking at Li Chengqian next to him, Cao Ze muttered in his heart.

Historically, the baby later broke her leg.

not only began to devote himself to the philosophical craze, but finally pulled his father's banner.

Do you want to talk to Lao Li in advance?

Well......

Forget it......

After all, now that Datang has deviated from his memory, it is impossible to see what will happen in the future.

If you don't say it in the future, you'll have a lot of fun......

Then Cao Ze was chatting with Li Shimin while secretly looking at Empress Changsun.

In fact, when he first entered the door before, Cao Ze's peeking gaze never stopped.

It's just that he did it very secretly, and no one found out.

Empress Changsun looks like she is about twenty-six or seventeen years old, and her appearance and figure naturally have nothing to say.

coupled with the queen's unique temperament......

It poked Cao Ze's point all of a sudden......

The best royal sister, it!

Cao Ze's heart is like a group of little rats keep upside down, that's called an itch!

It's a pity that he also knows that he can only think about it.

After all, Empress Changsun is Li Shimin's wife......

No matter how generous Li Shimin is to himself, this kind of thing will definitely not be magnanimous......

Cao Ze could only secretly swallow his saliva and kept admonishing himself.

No way.

I'm not right.

Lao Li is still very interesting to us, we can't be so unkind.

I'm like this, with that thief......

Well......

Never mind......

……