Du Ruhui was a little confused.

He has known this arithmetic before.

It was because Du Gou was addicted to this way that he wanted to see what the charm of this thing was, so he went to study it carefully.

Although this thing is very complicated, it can't be learned in other places. Du Ruhui believes that once it is really developed, it will have a very difficult effect in application, commerce, people and so on.

After all, it was something that emperor Yang Guang of the Sui Dynasty had worked hard to get at that time.

Although the Sui Dynasty was destroyed, this thing was preserved.

Nothing else, just because this thing is really useful.

But

At the thought of Du gouben, he liked to study these strange things, and he was afraid that studying this thing tirelessly all day would cause any harm to Du gouben.

Like magic.

"Brother Zhang Feng, I know what you mean. I'm only worried about whether my son will be stunned because of this."

"Probably not?"

Zhang Feng touched his chin and was not sure.

This product is a stubborn donkey. Once it falls into it, it will definitely delve into death.

He's a little guilty.

Last time I gave him the division table, on the one hand, it was to pretend to be forced, on the other hand, it was also because it was so fucking annoying.

"Or... Well, wait, I'll give you another thing. When you go back, you'll say to big cake, this is another algorithm of division, called multiplication!"

"In this case, will it make him more..."

"No!"

Zhang Feng shook his head.

I found it myself, and I gave it to Du Gou last time because of pretending to force. NIMA's, in case of an accident, he really can't say. Now give him the multiplication table, although he's reluctant to give it up, it's all a matter of time. Anyway, Du Dabei will be a free teacher when he comes, and it's only a matter of time for him to study it now and later.

And this thing, except that he doesn't want to die, if we can study it at the same time.

So what Zhang Feng didn't say.

I can only give him a thumbs up, then let Chen Tieniu throw this fool into the Weihe River for a bath, and then let him calculate why people can float on the water sometimes, but sometimes they can't!

Zhang Feng has 10000 ways to deal with such nerds!

Seeing that Du Ruhui wanted to ask about the multiplication table, Zhang Feng quickly turned off the topic, because he knew that if you told him this, you don't have a day, so don't give him the whole thing!

"By the way, Lao Du, you must have come for that bone powder this time?"

Zhang Feng looked at Du Ruhui's ruddy face from time to time.

Du Ruhui sighed slightly.

"Actually, this is true, but do you know about the Tubo envoys?"

"You know, how about Lao Du? Is my calculation accurate? I said, how could the emperor not have thought of this? Why? Did Lao Li not act in advance?"

Zhang Feng patted Du Ruhui on the shoulder to show off.

"You've also tasted the sweetness of this matter. You know how terrible the profits of this thing are. Among you, I think you are the most honest and most like a businessman. Look at Lao Li, who is the owner of the house. How can he understand these twists and turns?"

"I'm talking about Lao sun. He's very cunning. I advise you to have less contact with him in the future, but if you form a business alliance, what is Lao sun suitable for? You know! As for Lao Wei, he's a fucking official, and Lao Fang. The goods are right. Doesn't he have a son?"

In front, Du Ruhui called it a cool one.

Who doesn't want to be flattered?

And still a strange man like Zhang Feng?

But the more said, Du Ruhui felt something wrong. This goods is asking for the details of several people!

He hurriedly laughed and said, "well, Lao Fang's son has been in Longyou and knows how to handle things. To be honest, we have indeed become a business alliance for a long time. Otherwise, where can we compete with others? And there is Guanlong, you know!"

Where is Fang Yiai?

Of course it's in the back!

As one of the four evil kings of Chang'an, can he have a good life?

However, Chumo, Du Gou, sun Chong and others have surfaced. If no one wiped his ass behind him, it would have been exposed.

Although Du Ruhui knew that he could not hide it for long, at least it was impossible to have a showdown with Zhang Feng. At least, if anyone dared to say it before the emperor said it himself, he would be the emperor's enemy.

The emperor's brother is the only one who can always be remembered by the emperor. Once this relationship is showdown, who can guarantee to be a brother?

So.

Before the emperor said, none of them dared.

Every time they came out, Fang Yiai was like a great enemy. Thousands of royal guards scattered them. Once they knew several people, they would be invited to have a cup of tea every minute.

As for what tea.

It's all the love of the demon king by Fang Yiai.

Royalty, that's no joke.

Who dares to talk when small cards flash?

Even if you are a prince and your legs are discounted, you have no place to cry.

"By the way, brother Zhang Feng, said here. I heard you're going to the waiting meeting?"

Du Ruhui hurriedly changed the topic and didn't dare to talk about it. Zhang Feng's power has been appreciated. If he doesn't pay attention, he will take you to the ditch.

When Zhang Feng heard the speech, he immediately frowned.

"It's OK. I'm going to beat someone... Damn bastard, what's the grandson of Chen Tieniu doing these days? Why didn't he come? What are those bastards doing?"

"Would I have done this last time if they hadn't bought some goods?"

Du Ruhui's mouth jerked: "don't say that. I heard you were going to run an academy? That's a good thing! And if you win the first place, Miss Jingshu will be your man. All talents in Chang'an dare not say anything. You know, Jingshu is the sign of Yanlai building. You know where Yanlai building is."

"And this poetry meeting, you can not only win the return of beauty, but also beat out the reputation of the Academy. Why not?"

"As for Chen Tieniu, they are a little busy these days!"

As soon as Du Ruhui said this, he couldn't help sighing.

He picked up the wine bowl and drank it.

Although Zhang Feng knew about this and understood that it was necessary to go to this poetry meeting, he was a little flustered at the thought that the ghosts of those goods could not be seen these days. He had no place to get angry.

But seeing Du Ruhui like this, I couldn't help being confused.

"Old Du, what's the matter with you?"

"Nothing. I just feel that the family business is getting bigger and bigger now. We are not only connected with all parties in Zhenla, but also the alliance chamber of Commerce. You know everything about it. There are many people, and not only the mouth is miscellaneous, but also this person. Once you see the interests, there is no control or restraint, and this trouble will come!"

Zhang Feng understands.

This product has encountered the disadvantages of family business.

That is, there are more people who have leisure and fewer people who can do things.

Zhang Feng couldn't help laughing.

"I thought something happened to you, Lao Du! That's it?"

"You, just put your heart in your stomach!"

"Now that you're here today, as a brother, I'll give you some advice on your business and promise you to use Lao Du all your life!"

“……”