The so-called calculation tool is actually a small stick about half a foot long, usually made of bamboo and wood, but also made of animal bones, bronze, and ivory. Generally, there are two hundred and seventy-two pieces in a bunch, which are carried in a small bag. It is very convenient to move vertically and horizontally when calculating. Whenever he sees this calculation, Lu Yuanpeng can't help but feel a strong sense of pride in his heart. Since the advent of calculations, the decimal system has been used, and it is the originator of human decimal counting. At this time, the ancient Romans did not have a place value system in their counting method. The so-called place value system means carrying to tens, hundreds, etc. Using only seven symbols for counting, it is very cumbersome to calculate slightly larger numbers. Around this time, although the ancient Mayans understood place value, they used the decimal system. Earlier, the ancient Babylonians also knew the place value system, but they used the sexagesimal system. To calculate carry, the hexadecimal system requires nineteen digits, and the sexagesimal system requires fifty-nine digits, which makes counting and operations very complicated. The decimal system only requires nine digits to represent the carry of any natural number, which is very convenient. No wonder Marx, in his "Mathematical Manuscripts", praised the decimal system invented by the Chinese as one of the most wonderful inventions. Across the courtyard, in addition to Lu Wen and a servant of the Lu family, there were more than twenty carpenters who used axes and saws, making tables and chairs. These carpenters are all the most skilled in the surrounding areas of Pei County. Seeing Lu Yuanpeng walking in from outside the courtyard, Lu Wen couldn't help but smile and waved to Lu Yuanpeng in a rare move. Then he turned around and told his servant to bring another chair to Lu Yuanpeng. Seeing Lu Yuanpeng's eyes looking for something in the busy group of carpenters, Lu Wen said: "Peng'er is looking for the engineer Xi." Without waiting for Lu Yuanpeng's answer, Lu Wen said: "I didn't expect that the engineer Xi is a skilled craftsman. Those patterns of yours, these Even the craftsmen couldn¡¯t tell that it was the craftsmen who helped explain and demonstrate each step.¡± When Lu Wen praised the craftsmen, he couldn¡¯t help but sigh. "He went to set up an iron workshop outside Dongguan. Didn't you go and take a look when you came back?" Lu Yuanpeng then remembered that he wanted to make farm tools, and the Lu family also bought the only iron workshop in Pei County, Dongguan Wai. Lu Yuanpeng sat on the chair that had just been moved and felt tired. This morning, apart from riding a horse, he had not sat for a while. "Father, how about the iron workshop?" Lu Wen said: "The iron workshop only has one small stove. The engineer liked to say that the stove in Chu Di was not as good as the one in Wei Di. He also thought the space was small, so he expanded the shed and added two more stoves. . In addition to finding a few young men from the local area, he also found two blacksmiths from elsewhere and opened a furnace yesterday. In the past two days, he only came to check and explain, but he was nowhere to be found. ." Lu Yuanpeng could tell that Lu Wen was a little reluctant to give up on the engineer. It¡¯s just that Gongshixi doesn¡¯t know how to clone himself, so there¡¯s nothing he can do if he¡¯s anxious, so Lu Yuanpeng hurriedly changes his subject. Looking at the sweaty craftsmen who were busy, he said: "Father, there are still ten months before the auction. Are these tables and chairs available in time?" "There is time. Now a craftsman can make a round table or two in two days." The number of chairs required by the restaurant can definitely be made. It¡¯s just a pity that we can¡¯t make more.¡± Lu Wen has a shrewd mind, and he has already seen the tables and chairs that Lu Yuanpeng made out of nowhere. There is a huge business opportunity. If the wealthy businessmen from Pengcheng, Xiang County see this, they will immediately spend a lot of money to buy it. Lu Wen sighed and said helplessly: "It's just that these craftsmen took too long to make these tables and chairs. I'm afraid they won't be able to make more during the auction you mentioned." Lu Yuanpeng knew that Lu Wen had done these things for him. , basically took out all the property at home, because the things Lu Yuanpeng did were really expensive. Reading history in a previous life, it was said that Lu Wen saw that Liu Bang had a strange appearance and was not an ordinary person, so he married his daughter to Liu Bang. And that was when Liu Bang was poor and had nothing to do, so he dared to marry his daughter to him! He didn't even care about the fact that Liu Bang, who was not married, already had a child with Cao, a widow from Peixian County. ??Also, it would be okay if Lu Wen just targeted Liu Bang, but then Lu Wen married his youngest daughter to Fan Kuai, the dog-slaughterer! This vision cannot be described without being vicious. Take Lu Yuanpeng's exchange of Qin banliang, wine shops, high-paying military training, and reclamation of wasteland. Apart from opening a wine shop, Lu Yuanpeng's secret diet method can be seen and touched, and there are several other things that others would never dare to do. , and Lu Wen only listened to Lu Yuanpeng's vague explanation, discovered the huge benefits, and dared to spend all his money to take this strange risk. This really has to make Lu WenPeng looked at Lu Wen with admiration. In addition to being shrewd and having a unique perspective on people and things, Lu Yuanpeng could see that Lu Wen also dared to take risks and make desperate moves. Lu Yuanpeng believed that if he was not a businessman, his reputation was not prominent before the incident, Lu Wen himself was too old, and it was even possible that Lu Wen was not optimistic about his son Lu Ze's ability, he had no choice but to put the Lu family on Liu Bang . Otherwise, given Lu Wen's temperament, he would never be willing to take the position of a minister. From the beginning of the uprising, the Lu family also raised the banner of anti-Qin almost at the same time as Liu Bang. However, Lu Wen did not let Lu Ze and Liu Bang join forces to help his son-in-law Liu Bang conquer the world. Instead, he formed an army alone and carried out activities. You can see the clues from places like Shanfu and far away from Liu Bang. Actually, Lu Yuanpeng had no intention of making money with this table and chair furniture. Lu Yuanpeng believes that tables, chairs and furniture are very simple and are nothing more than a change of concept. Any carpenter who has seen or even heard of these things will be able to make them quickly. It is simply impossible to keep them alone for a long time. ¡°Besides, there are no patent fees to collect at this time. However, Lu Wen's words also reminded Lu Yuanpeng that he could do something on this. Although the profit would not be huge, it would still be somewhat beneficial to the Lu family and him for the time being. Lu Yuanpeng knew very well that Lu Wen didn¡¯t have much money left. Feeling grateful to Lu Wen, Lu Yuanpeng thought for a moment and said, "What my father means is that if we can make more, there will be many people vying to buy it during the auction?" Lu Wen nodded and said, "Exactly." Lu Wen looked at the shiny Eight Immortals table in front of him, and then stroked the smooth and solid armrests of the chair with his hands, his eyes full of regret. Lu Yuanpeng didn't understand what Lu Wen meant, and asked: "Actually, on the day of the bidding, we can make a few pieces that are enough for the wine shop. We can tell the businessmen who are interested in these tables and chairs that they can buy them from my Lu family in the future." Lu Yuanpeng didn't understand what Lu Wen meant. Wen shook his head with a wry smile, and said with regret: "This table and chairs are not complicated to make, and any ordinary craftsman can make them after seeing them. Even if our Lu family makes these tables and chairs in large quantities, I am afraid that only Peixian County can produce these tables and chairs." Someone will buy it." Speaking of this, Lu Wen couldn't help but look a little lonely. Lu Wen sighed in a low voice: "This table and chair is really a pity!"