Generous people are liked everywhere.

Since Li Bai was not short of money at this time, he naturally didn't mind buying people's hearts a little.

Although he spent a gold or two, he gambled on this game and got the old man's usual money, but he still lost money. But his main purpose is naturally not money, but to let the old man apologize to the eldest girl, so that his heart is comfortable.

As for when was the abacus invented? Song Dynasty or Yuan Dynasty? Well, it's still that sentence, it's his business.

His poems have been plagiarized several times by himself, Du Fu is about to cry and faint in the toilet, his little wings are already fluttering very violently, and there is no way for the butterfly effect to happen.

Not to mention that he is still contributing to the arithmetic of this era! Well, it's still the kind of contribution that should have been left in the annals of history.

Thinking of this, Li Bai couldn't help but feel a little proud, and when he saw Zhang Pengyuan personally take his drawings and walk away, he turned his head and smiled at the old man standing on the side with a solemn face: "Hey, Dr. Yan, hurry up and get ready for consistent gambling, and when my arithmetic artifact comes, at most two hours, I will be able to calculate your accounts clearly." ”

"Humph!" The old man didn't bother to pay attention to this goods at all, don't overdo it, snorted coldly, and said: "You kid, don't worry, you have always been copper money, and the old man can afford to lose!" ”

"Hey, it's not just the usual copper coins, but we also have to bow and apologize to our eldest girl!" Li Bai stroked the head of the girl next to him and said.

Although the girl has not said anything, she has been holding her thighs, and the feeling of attachment makes him enjoy it very much!

"Calculate it!" The old man said angrily.

The ancients valued their promises the most, and Li Bai was not afraid of this old man's tricks, and after laughing, he began to tease the big girl around him, or this tender little Lori is cute, who wants to see those old men.

Since Ying Nuo has testified, Zhang Jiazhen and Master Cen naturally can't shake off at this time, not to mention that both of them have been interested in Li Bai's mysterious so-called arithmetic artifact, so they naturally want to see it with their own eyes.

The adjutant who was left behind by the team naturally knew the eyes, and someone had already brought the stool, waiting for the three adults in the field to sit down, waiting for boredom, and the three of them didn't bother to pay attention to Li Bai's lazy guy, so Zhang Jiazhen simply sent someone to bring the chessboard.

Dr. Yan was also interested in the conversation, so the three of them simply played against each other in this room.

That's good.

Li Bai teased the eldest girl by himself, and told the story in a low voice with the next girl.

The three old men meditated around the chessboard, and they didn't feel bored when they waited, and it took about half an hour to work, just when the building boat was about to anchor with the ship that had already carried the goods, Zhang Pengyuan held the abacus that Li Bai wanted, and quickly returned to the boat.

"Li Gongzi, time is in a hurry, fortunately there is no shortage of craftsmen on the dock, I found more than a dozen people, worked together, and finally finished the thing you wanted, let's see, is this thing?" After saluting the three adults who were playing the game, Zhang Pengyuan put the inferior abacus that had just been baked on the table.

Li Bai looked at it, this thing made in a temporary hurry, naturally he didn't want to be more eye-catching. There are a few abacus beads that are even obviously different in size, so that the frame is scraped neatly, and the beam is also engraved according to the content drawn on the map, simplified, traditional is too troublesome.

I tried to play with my hand twice, well, it's good, although I didn't paint it, but it was finely polished, there were no wooden thorns, and I got into it, but it was inevitable that it would delay some speed, but it was not a big problem to use.

"Okay, that's it! Hard work Zhang is in charge! Li Bai nodded and said happily.

"It's the team!" Zhang Pengyuan smiled bitterly and corrected again.

"Well, I'm optimistic about you, maybe you'll be the commander in the future!" Li Bai waved his hand, the team is a little awkward in this title, and he can't be blamed for always calling him wrong.

The attention of the three people who were playing next to him had already been attracted to him, especially Dr. Yan, whose eyes swept around the ugly things on the desk a few times, looking thoughtful.

As for Master Cen and Zhang Jiazhen, they looked at the strange thing and looked at each other.

"Alright, I'm going to get started! Good girl, sit next to your uncle, and see how your uncle uses this arithmetic artifact to defeat arithmetic and fight monsters! ”

"Hmmm! The big girl must obediently see how her uncle defeats the arithmetic monster! Uncle is the best! ”

God knows what story Li Bai told her just now, and the girl answered innocently. also learned Li Bai's movements when he told the story before, clenched his small fists, bent his wrists, and after swinging up and down a few times, he looked sideways at Dr. Yan, who had a serious face, and stuck out his tongue cutely, and then immediately turned around and sat down beside Li Bai honestly.

"Haha!" Li Bai laughed twice, habitually stroked the eldest girl's head, and then opened the complicated accounts with bated breath.

Playing abacus was his hobby in his previous life, although computers have long been able to replace such ancient things as abacus, but Li Bai was a good one in his previous life, and he played abacus very well.

His left hand flipped through the accounts, and his right hand quickly played with the abacus, stopping from time to time to pick up a pen and paper to make a mark, and after a while, the room was quiet, except for the sound of the abacus hitting the beam and the frame when he dialed the plate.

Naturally, the hand talk can't go on.

Dr. Yan's mind had already been attracted by this side, and his eyes were staring at Li Bai's direction, but for the sake of face, he endured it and didn't walk over.

Zhang Jiazhen, who is an ordinary person, has naturally seen the entanglement in Dr. Yan's heart, smiled slightly, stroked the chess pieces on the chessboard with one hand, patted the stubborn old man's shoulder, and glanced at Master Cen again, stood up together, and pulled the doctor of arithmetic over.

Li Bai, who was already immersed in calculations physically and mentally, naturally didn't notice the movements of these adults, and the little girl beside Li Bai glanced at the three old men who surrounded her, and then turned her head and focused her attention completely on Li Bai's right hand.

It is indeed very attractive, the fingers are dexterously dialing on the abacus, up and down, advancing and retreating, and it has its own beauty.

The layman looks at the bustle, and the insider looks at the doorway.

Dr. Yan seemed to have forgotten his previous shame, and just stared at Li Bai fiddling with the abacus, occasionally stopping to write down some numbers, and then zeroing the abacus and dialing the beads again. Sometimes frowning, sometimes if there is something, sometimes suddenly enlightened, sometimes with a puzzled look.

However, the more he saw the end, the more surprised the look on Dr. Yan's face became, about two quarters of an hour later, it seemed that he had already glimpsed the doorway, and when he looked at Li Bai again, his eyes were already full of indescribable meaning, and he could even read a trace of worship from it!

This...... It's really an artifact!