Whether it is a past life or a present life, Li Bai's favorite thing is to deal with people who have special interests and hobbies, and the most hated are those who have no desire and are rigid.

It's like a physicist can work hard for decades to discover a new particle; Astronomers can sleep with an astronomical telescope every night in order to discover a new celestial object; A coder who loves the work of a programmer can go up for days to create a program, just to design his own ideas......

Doctors of arithmetic are no exception.

Seeing the joy of hunting, what else is there to talk about? Of course, when dealing with this kind of person, it is absolutely not right for them to feel that they have been cheated, and once the person who admits death is more serious, it is not easy to deal with.

These are all empirical talks, and at this time, they are stunned, pretending to be stupid and saying, "Oh? I don't know Dr. Yan, what will I ask for a kid? ”

"I'm a little ashamed to say it!" Dr. Yan rubbed his hands unconsciously, and said with a little shame: "Today, I took the abacus and fiddled with it for a long time, but there are some things that I always don't understand, and I ask Li Gongzi to give me some advice." ”

"For that abacus?" Li Bai looked completely stunned, and said in astonishment.

"It's for the abacus! When I saw that when the son was settling accounts today, he dialed this abacus to be really smooth, but the old man was obscure and difficult to use, and there must be some tricks in it, I don't know if I can teach it? Since the words were spoken, this Dr. Yan simply put out his old face and humbly asked for advice.

If it was something else, Yan Kui really wouldn't be able to pull this face.

is more or less a doctor of arithmetic given by the Holy Emperor today, and no one is convinced except for the sage Yan Quina in arithmetic. But the appearance of this abacus touched his mind.

Not only is it more convenient than the calculation, but the calculation is faster than the calculation I don't know how many times, if this is spread from his hands, how many people will be benefited!

"This ......" Li Bai had a hesitant look on his face, his expression was uncertain, as if there was something unspeakable, or the kind of unspeakable concealment that could not be washed away, otherwise who would make such a constipated expression without anything?

"But what's the difficulty?" Dr. Yan immediately asked.

The old man's heart was also entangled at this time, Li Bai made this expression, clearly saying that today's matter is not so simple, can you not let the old man worry about it? I thought that I was not ashamed to ask, and I could ask a reason, but now it seems to be a little difficult.

"Let's put it this way, Elder Yan, do you think that with my age and knowledge, I can drum up an arithmetic artifact like an abacus?" Li Bai patted his thigh with a ruthless look and said.

"This ......" Dr. Yan hesitated, then shook his head honestly, "I don't think it's possible. ”

"Phew...... This old man really looks down on people! ”

Li Bai spit out fiercely in his heart, but his face was ashamed and said, "That's it!" Master Zhang also said before that Bai had the honor to meet a strange person, named Lu Xun Zishuren, that is really a hermit master, up to astronomy and geography, Bai talked with him for three days and three nights, and really gained a lot! This abacus was that day when I happened to hear a master mention it and teach a formula, and then I had a copy of it, and I practiced for many days to be proficient in using it. ”

"Oh? And such strange people! Obviously, Dr. Yan was aroused, and of course he valued the most was another sentence, it turned out that this thing really had a formula.

Since this is the case, when he said goodbye that day, Bai also made a ...... of "Cilu Division", hey, don't mention it. But Lu Shi once mentioned to Bai that day, this abacus is actually not afraid of me to pass it on, if you can meet someone who is destined to benefit the world, it can be regarded as a merit. It's just one point, this thing is a sharp weapon for arithmetic, and it is very useful for the family of merchants, but it is not good to give it away for nothing, otherwise it will be against the way ......of heaven. But if you want to pass on the mantra, I'm afraid that one or two gold is not enough! Li Bai shook his head and sighed.

"This ......" Dr. Yan was a little stunned, so that he was half-convinced, and the master would say this.

Of course, it's not like there's no solution. If Dr. Yan can ensure that Bai enters the mantra of teaching, he will definitely not use it for business, but only for research above the school, and make a poisonous oath, so white that he can teach it and never hide it! But if it spreads, it will be Dr. Yan's responsibility! ”

"Don't hide that Dr. Yan said that Bai was also born in a merchant family, and his father Li Ke did the business of Caoyun on the river, but I didn't even teach this calculation to my own family, because I was afraid of disobeying the will of the master and bringing unwarranted disasters to the family, if you don't believe it, Lord Yan can make people go to the Li Mansion in Narong County to investigate! See if Shiro lies! Li Bai said righteously.

This is, of course, the big truth.

If it weren't for this old man bullying the big girl, and it happened to be because of the backward calculation tool of messing up the calculation chip, how could Li Bai think of making an abacus to bully people?

But in the eyes of others, apparently not so.

If what Li Bai said is true, this abacus didn't even give it to his own business father, obviously there is really a taboo.

But how could Dr. Yan make a vow that this way of calculation would never go out of him?

He wondered if the purpose of the abacus was to spread the leaves. Although this abacus was not invented by him, it was passed down from his hands and carried forward, how could the history books leave a mark for his Yan Kui's achievements, which can be regarded as a contribution to the promotion of arithmetic!

What's the point of studying this thing thoroughly and playing with it in your own hands?

Of course, Li Bai also understood the careful thoughts in the hearts of the readers of this era, and put it in the future generations, even if this Dr. Yan dared to swear, he would not dare to give a formula.

This era is different, everyone believes that there are gods in the three feet above their heads, and naturally they take the oath very seriously.

This is a good thing, and sure enough, people of faith are better fooled. Everyone dares to believe that there is a god in this world, what else can't be believed? Can it all be interpreted as a miracle......

"This ...... I don't know if that master Lu Xun ever said that it takes gold to teach these formulas? Dr. Yan said tentatively.

The fish is hooked!

However, Li Bai didn't have any joy on his face, and said after a moment of silence: "I didn't say the specific number, just let me think about it, this abacus is spread all over the world, from the court to the common people, how many businessmen can be convenient?" How can this value be estimated? HP World! Of course, Lu Shi is a Taoist for Youfang, he is not actually seeking wealth, just for peace of mind. ”