Chang'an County Court. Before the end of the court today, Li Nuo had judged all the cases. Judging cases is his old profession. As he gradually became familiar with the "Daxia Law", he judged cases faster and faster, and was able to complete the task ahead of schedule. Today's harvest is good. Although it is still some trivial cases, the law code actually added two days to his life. When he woke up in the morning, his life was left with 24 days. After judging the last case in the afternoon, it became 26 days. In total, he made a net profit of one day. After leaving the court, Li Nuo said to the Chang'an County Magistrate: "Tomorrow's case, I will trouble Lord Pei." Pei Zhe looked embarrassed and hesitated to speak. Li Nuo noticed that he seemed to have something to say, and asked, "What's wrong?" The magistrate of Chang'an explained, "My lord, you don't know that tomorrow is a day off. All the police officers and clerks in the yamen are resting and bathing at home..." Then he added, "It doesn't matter whether they take a day off or not, but I'm afraid that my subordinates will have opinions. After all, they have been working hard for ten days and must be quite tired..."
Li Nuo has read the "Daxia Law" these days, which includes regulations on official holidays. Civil servants in Daxia work ten days and rest one day. It seems to be harder than working five days and resting two days in later generations. In fact, officials in Daxia are much more comfortable. They will have a day off for the spring equinox, autumn equinox, summer solstice and winter solstice. For important festivals such as Qingming, Dragon Boat Festival, Mid-Autumn Festival and Double Ninth Festival, they will have a day off for three days and never adjust the rest. Daxia attaches great importance to filial piety. When it comes to parents' birthdays and death anniversaries, they can ask for leave from their superiors and they will definitely be approved. If his superiors don't approve, a letter of impeachment will be submitted, and the saliva of the censors will be enough to drown him. How can we expect a person who is not filial to his parents to be loyal to the country? Calculated in this way, there are more than 300 days a year, and he can probably take more than 150 days off. Li Nuo glanced at the yamen runners around him. They really didn't look very energetic. They worked hard for ten days to wait for a day off. If they were asked to work overtime, what would be the difference between them and the stupid leaders in later generations? But if he didn't do anything, wouldn't his day be wasted? Li Nuo thought about it and said, "How about this, please help me choose ten people who are willing to stay in the yamen tomorrow..." Before he finished speaking, many yamen runners secretly moved back a step. It was not easy to wait for a day off. They had already planned to go to the yamen for fun. Who would be willing to stay in the yamen to work? Li Nuo continued, "I will give these ten people a month's salary as compensation." A group of yamen runners heard this and looked up suddenly. What? If I work for one day tomorrow, I can get an extra month's salary? Then why would I take a day off? Those who were afraid of being eliminated had already run out and said to the magistrate of Chang'an County: "Sir, I am not tired. I am willing to stay in the yamen and work tomorrow!" "Me, me, me, I am not tired either!" "And me!"
"I will stay too!" In a blink of an eye, the number of applicants exceeded ten. The last one to stand up saw that the situation was not good and immediately said: "Sir, choose me. I only need half a month's salary!" Others cursed this guy in their hearts, but they had to lower their prices and spoke one after another. "We only need half a month..." "Ten days for me, ten days' salary is enough." Pei Zhe can understand these guys who are scrambling for the first place. If he can get a month's salary for one day's work, he would also be willing. His salary is managed by his wife. If he can save some private money, he will have money to go to Fengqi Tower to help those poor women next time... A gambling father, a sick mother, an unmarried brother, poor her, as a parent official, who will help them if he doesn't? Thinking of this, he looked at Li Nuo and said with a smile: "Young Master, you are not an official. If you try a case alone in the county government office, I am afraid that you will cause gossip. How about this, let my wife go back to her parents' home tomorrow, and I will stay here with you..." Li Nuo said embarrassedly: "This is not good. How can I delay Mr. Pei's family affairs?" Pei Zhe waved his hand and said: "The people's affairs are the most important. I am unworthy of being a parent official. I still have a lot to learn from you... Not long after, Li Nuo left Chang'an County Government Office. The constables seemed impressive, but in fact their salaries were not high, only two taels per month, and ten people only had twenty taels. Li Nuo I don't know how much money the family has, but I guess they can afford twenty taels. When he returned to Li's house, Song Muer was already waiting in his yard. There was only her and a maid from the Song Mansion in the small yard. Song Jiaren was not seen. Li Nuo was worried that she would have to accompany her to play shuttlecock or do her makeup. The portraits of the female assassin and Zheng Yuanwai's concubine had dimmed. Now, apart from being good-looking, he had no special skills. What Li Nuo was worried about did not happen. Song Muer came over with a booklet and said coquettishly: "Brother Li Nuo, I don't know how to do a question. Can you explain it to me?" Hearing that he was just explaining the question to her, Li Nuo was slightly relieved. Thinking back to the past, he also had a perfect score in mathematics in the college entrance examination. Could he still be stumped by elementary school mathematics? Li Nuo was slightly stunned when he took the booklet handed over by Song Muer and looked over. It's not that he doesn't know this question. Li Nuo has been reading books in his free time these days. Most of them are rough reading rather than detailed reading, aiming to understand the world as quickly as possible. Li Nuo had a rough idea of the level of mathematics in Daxia. Modern mathematics had not yet sprouted here. The arithmetic in Daxia was all about solving practical problems, such as measuring area and volume, calculating grain prices, taxation, etc... Song Muer's question was used to calculate the price of grain. "Now there are nine dou of hemp, seven dou of wheat, three dou of bean sprouts, two dou of poached rice, five dou of millet, and one hundred and forty straight coins; seven dou of hemp, six dowels of wheat, four dowels of bean sprouts, five dowels of bean sprouts, three dowels of millet, and one hundred and forty straight coins." One hundred and twenty-eight...; one dou of hemp, three dou of wheat, two dou of bean sprouts, five dou of millet, how much is a dou of money? " In terms of type, this question belongs to the same category as chicken and rabbit in the same cage. However, there are only two unknowns in the chicken and the rabbit in the same cage, but there are five in this question. For Li Nuo, the system of linear equations in five elements is not difficult to solve, and either the elimination method or the matrix method can be used. The difficult thing is how to explain it clearly to Song Muer. After all, she was only six years old, and even in later generations, this was the content of high school mathematics, and high school mathematics was generally not so difficult. Song Mu'er didn't even have the concept of a system of equations, and it wasn't that easy for Li Nuo to explain it to her.
He first found a piece of scratch paper, listed the matrix of this question, quickly calculated the answer using linear algebra, then converted the question into Daxia's formula and listed it on another piece of paper. Daxia's numbers also have their own simple writing methods, including addition, subtraction, multiplication and division, and they also have corresponding symbols. Song Muer can understand individual calculations. But she doesn't understand why the two equations can be added. Li Nuo had no choice but to start from the most basic and explain it to her step by step. Fortunately, Song Muer was smart and after Li Nuo gave a few examples, she was gradually able to understand the operations between the equations. The next step is much simpler. Solving a system of five-dimensional linear equations is just an elimination process of addition, subtraction and subtraction. Li Nuo had already calculated the answer just now. He only had to tell Song Muer how to do it and let her calculate it step by step. Although it took a little longer, But she eventually figured out the answer herself. Li Nuo looked at her and asked, "Do you understand?" Song Mu'er was surprised to find that the problem that she thought was so difficult just now was solved by herself. She curled her lips and murmured: "Let me just say, you can speak better than the husband, but the husband is not happy to hear it..." She looked relaxed, but Li Nuo was not. In order to make her understand, he started with simple examples, step by step, and almost broke apart all the knowledge points, crushed them up, and fed them into her mouth bit by bit. If you didn't listen to this, Understand, Li Nuo has no choice. Fortunately, Mu'er did not disappoint her. Li Nuo touched her head and said, "You can't say that, sir..." "Brother Li Nuo!" Before Li Nuo finished speaking, a familiar voice came from not far away. He turned around and saw Song Ning'er and Song Jiaren walking in from the outside together. Song Ning'er trotted over and greeted her with a smile. Li Nuo was a little surprised. When did he and Song Ning'er become so familiar? Song Muer was halfway through when she suddenly stopped and looked fixedly at Li Nuo. Song Ning'er glanced at her and raised her chin proudly. After a while. Li Nuo looked at Song Mu'er who turned around and ignored him with a pout, then looked at Song Ning'er who was triumphant and covered her face helplessly. Who would have thought that Song Ning'er would pretend to be Song Mu'er and ask him questions? The two sisters looked exactly the same, with the same clothes, same hairstyle, and the same jewelry. Even the sachets they wore had the same smell. He really couldn't tell them apart, couldn't tell them apart!