"Miss Xiaozhi, Miss Xiaozhi, are you okay?" Lu Ting stretched out his hand and shook it in front of the little girl.

I'm done, and no one says yes, the little girl is distracted, and I don't know if I'm shocked by myself or thinking about something else.

Zheng Yanzhi came back to her senses, her pretty face flushed, and soon her eyes lit up and said, "Master Lu, I didn't expect you to finish it so quickly, I didn't expect that a few branches and a handful of copper coins could turn decay into magic, it's really eye-opening." ”

"Quick? It's average" Lu Ting said with some regret: "It's too shabby, if you give me some time and make a good one, it's no problem to double the speed." ”

What, how fast can it be? Zheng Yanzhi estimated the time just now, the speed is at least twice as fast as the pearl chip, if it is twice as fast, God, if you use this when settling accounts or calculating, it will be like a tiger with wings, take Hongling as an example, if Hongling practices for a while, using this auxiliary tool is faster than those decades of old bookkeeping.

Not to mention several times faster, it can save half of the time, it is also very amazing, for example, an accounting day to inventory an hour, with this auxiliary tool, is to save half of the time and half an hour, if it is promoted, so many calculations are involved in the world, if this auxiliary tool is promoted, how many people in the world benefit.

By the way, Aya worked in the Qin Palace, although he was trusted by the King of Qin, but he had no credit, and the position had not been moved for a long time, for which Aya sighed many times, and now the King of Qin and the crown prince are fighting fiercely, and they are trying their best to compete for favor and merit in front of the emperor. Aya hurts the most is herself, and she should share her worries for Aye.

lest the brothers and sisters in the clan always look at themselves and say that they have not contributed much to the clan, but they can be favored the most.

Zheng Yanzhi held back the excitement in her heart, and said expectantly: "Master Lu, this auxiliary tool is very useful, can the slave family recommend it to the people around you?" ”

When she said this, Zheng Yanzhi was a little nervous, don't look at this auxiliary tool, it is not good-looking, but it is very practical, if it is promoted, it will definitely gain a great reputation, if you offer this thing, you can't run with a recommendation.

"Of course you can" Lu Ting said generously: "This thing is made to improve Miss Xiaozhi's computing ability, and naturally Miss Xiaozhi has the final say, whether it is promoted or used for other purposes, as long as Miss Xiaozhi is happy." ”

So excited, it is estimated that he saw the business opportunities inside, made a batch to sell, and did not worry about no way to sell, Lu Ting also thought about selling it to make money, the problem is that he has no funds and no sales channels in his hands, even if he makes it, he can't sell much, especially in ancient times, there was no concept of intellectual property rights, and simple things like abacus can be counterfeited in less than a day.

Anyway, when the favor is sent out, it is better to send it thoroughly, this little pretty maid is more capable than she imagined, and Lin Zhengshi is also more capable than she imagined, to make a good relationship, and to speak if you need it in the future.

The crab roe bun was transferred for 600 yuan, and the little girl didn't even pay back the price, obviously selling herself a big favor, and I don't know if Lin Zheng would blame her if she knew, if the little girl told her about the abacus deal, it would be regarded as making up for it.

The most afraid is to make Lin Zheng's unhappy because of the high-priced transfer, you must know that the status of the slave is very low, and I don't want the little maid to be punished by Lin Zheng's.

"Really... Target? Lu Gongzi isn't entertaining the slaves, right? Zheng Yanzhi said with a surprised face.

Isn't it, such a good thing, if you don't want it, you don't want it, just give it to yourself for nothing, and let it be disposed of by yourself? Zheng Yanzhi also wanted to pay for it, but she didn't expect Lu Ting to take the initiative to send it out.

"Really, this son will do what he says."

"But such a valuable thing, no... Fine. Zheng Yanzhi still had some hesitation.

Lu Ting said with a grin: "It's not a valuable thing, what's wrong, I used to say that I would improve Miss Xiaozhi's mental arithmetic ability, but there are a lot of things, and I don't teach enough, this should be regarded as compensation, okay, this matter is decided like this, on the contrary, I will leave it here, from this moment on, it belongs to Miss Xiaozhi, how to deal with it depends on Miss Xiaozhi's mind, I have no opinion." ”

Zheng Yanzhi glanced at Lu Ting deeply, and suddenly saluted Lu Ting: "Master Lu is talented and righteous, and the slave family is grateful." ”

No, this arrogant little girl, usually has eyes on the top of her head, and her favorite thing is to roll her eyes and turn her chin to the sky, it is the first time I have seen her so gifted, Lu Tingleng paused, came back to her senses, and immediately returned the salute: "Miss Xiaozhi is serious,"

Zheng Yanzhi finished saluting, and quickly said anxiously: "Lu Gongzi said that the workmanship is too simple, if it is done well, the speed can be doubled, I don't know if Lu Gongzi can make a good one, by the way, look at Lu Gongzi using it, it seems that there is a formula, can this formula be taught to the slave family?" ”

To be able to make such an ingenious auxiliary tool so quickly, Lu Ting must have a perfect plan in his mind, and the most important thing is that Lu Ting still has a formula when calculating, these are all very important experiences.

"The formula is easy to say, it is some of the experience I have summed up, just make a good one, I'm afraid it's a little difficult, I don't have tools, and the carpentry skills are not good." Lu Ting said with some embarrassment.

Arithmetic formulas, there was an abacus skills class in elementary school in the previous life, and it is not difficult to memorize them, but the carpenter himself can't.

Zheng Yanzhi immediately said: "This is simple, there are carpentry masters in the house, Lu Gongzi will give me some advice, I believe they will not disappoint Gongzi." ”

"No problem, just do what Miss Xiaozhi said." After Lu Ting finished speaking, he rubbed his hands and said, "It's about the transfer of the gold and jade bag, I don't know when it will..."

The incident of crossing the river and pumping the board just now is still vivid, Lu Ting has to guard against it, lest the little girl only have an empty promise, if she deliberately makes things difficult for herself and puts off the transaction for a year and a half, she can afford it, but she can't afford to wait.

This prodigal son is really cautious, maybe he scared him just now, he didn't see the rabbit and didn't scatter the eagle, Zheng Yanzhi didn't respond to Lu Ting's words, turned to Hongling and said: "Hongling, go and prepare money immediately, Lu Gongzi can take it with him when he leaves." ”

"Yes, miss." Hongling answered, and quickly went down to prepare.

It's very exquisite, and in addition to being generous, he also gave himself enough face, and Lu Ting immediately said: "Where is the carpenter, everyone will be able to do it soon." ”

Soon, Lu Ting was taken to a carpentry room, where three carpenters were respectfully waiting for orders.

Rich people are good, all craftsmen are dependent, they can be used at any time, they can maintain the family home, they will not eat in vain in their spare time, they can send their products to help, and they can also use their crafts to make money for their masters.

Lu Ting was also not polite, drew a sketch of the abacus from memory, and then asked three carpenters to divide the labor, one to make a frame, one to make a bead column, and the last one to make beads, the three carpenters are all masters, the structure of the abacus is simple, it can be said that it is clear at a glance, and the beads are a little difficult to polish, and the rest are the three carpenters who work together, and when they don't understand, they ask Lu Ting a few words, and in less than an hour, a new abacus appeared in front of Lu Ting.

The frame is not difficult, it will be done in less than two quarters of an hour, and the rest of the time is used to polish the beads, Lu Ting thinks it is okay, but the three carpenters are extremely demanding, and a small bead also looks left and right, squints the left eye, and then squints the right eye to see if it is round enough, where there are burrs that have not been polished well, and the degree of seriousness makes Lu Ting also admire.

Beautiful, the frame made of rosewood, the beads made of red sandalwood, each piece of wood has been carefully polished, smooth and rounded, it is the words engraved on the abacus, and it is also neat and elegant, if it weren't for Lu Ting's stop, the old carpenter who took the lead also wanted to inlay silver horns on the corners of the abacus, and the frame was decorated with moire, Lu Ting persuaded that this was not for decoration, but practical, and he was willing to give up without such trouble.

The first abacus of the Tang Dynasty, and the first abacus in the world, came out under his own leadership, Lu Ting felt a sense of pride in his heart, looking at the arithmetic in his hand, the more he looked at it, the more satisfied he became, in fact, it didn't look like an abacus, but like a beautiful work of art, all the materials were precious wood, just polished, the abacus also exuded a unique aroma of sandalwood.