"Sir, one meter is ten meters, one decimeter is ten centimeters, one centimeter is ten millimeters, this progress is very simple and easy to understand, and my Tang length unit is a little confusing, such as the most commonly used step, some places one step refers to the distance of one foot step, some places actually refer to the distance of one foot step, although there are official explanations in all dynasties, but can not be implemented in various places, now I Datang has not begun to unify weights and measures, and the standard of the former Sui is still used, I think the weights and measures that Mr. talked about are very good, You can copy it and use it. www.biquge.info"On the grass of the garden, Li Chengdao proposed to Li Xiu seriously.

"Chengdao, your idea is good, unified weights and measures are indeed very important, in addition, I also think that decimal weights and measures are very convenient, our Datang's length unit is quite good, ten inches for one inch, ten inches for one foot, ten feet for one zhang, but in comparison, the weight unit is a little confusing, such as twenty-four baht for one tael, three taels for the big two, sixteen taels for a catty, just one weight unit, there are multiple carries, very inconvenient to calculate."

When he said this, Li Xiu couldn't help but be surprised by the brain circuit of the ancients, he, the later generation, was often dizzy when calculating these weight units, one would be trial, one would be hexadecimal, and one would be twenty-four, which was simply a test of people's IQ limit, but many Tang people were converted very easily, such as the Yiniang and Yuechan at home, which made Li Xiu also ashamed of himself, and also lamented that the Chinese in later generations were rated as the people with the highest IQ, which is estimated to be related to this. All of them have been trained since ancient times.

However, although Datang's weights and measures have great shortcomings, Li Chengdao's proposal to copy the rice or kilograms that Li Xiu talked about is also a big problem, so Li Xiu spoke again at the moment: "Although there are some problems with weights and measures, but Chengdao you must also know that the use of weights and measures, its essence is still a matter of habit, all parts of the Tang Dynasty are accustomed to using local weights and measures, even if the imperial court wants to unify weights and measures, it is not an easy task, not to mention to copy a set of completely unfamiliar weights and measures, do you think the people will accept it?" ”

"This ......" Li Chengdao couldn't help but show a contemplative expression when he heard this, he really didn't think about this problem, he just felt that the weights and measures that Li Xiu talked about were very convenient and practical, so he wanted to copy it, but he didn't take into account the difficulties in implementation.

Seeing Li Chengdao fall into deep thought, Li Xiu smiled and didn't bother him, Li Chengdao has a maturity far beyond children of the same age, but sometimes he still exposes some shortcomings that are too naïve and naïve, which can't be blamed on him, after all, he is still too young, and he will not really mature until he has enough experience.

"Sir, do you think I wrote the ten numbers correctly?" At this moment, I suddenly only heard a timid voice asking, when Li Xiu turned around, he immediately saw Ha'er holding a piece of paper and looking at him with wide eyes, she was only on the first day of class, and Li Xiu taught her to practice ten Arabic numerals.

Seeing that Ha'er was a little timid, Li Xiu smiled at her gently, then took the paper and looked at it, and then praised it: "Yes, the writing is very neat, now I will teach you some simple rules for using numbers......"

I just discussed with Li Chengdao about the implementation of excessive weights and measures related to the national system, and then Li Xiu has to start from the most basic numbers, for such a large span, Li Xiu has long been used to it, after all, these children's learning progress is different, Li Chengdao and Qi Niang learn the fastest, Xiaoya and Li Chengqian are worse, as for the hate, it is even worse, can only start from the most basic, fortunately yesterday Qi Niang has helped her preview, and the hater is also very smart, and it is not very difficult to learn.

After finishing the lecture to Hate'er, Li Xiu hurriedly turned around and gave a lecture to Li Chengqian and Xiaoya, although the student progress of each student is different, he has to worry about it in five, but as long as he gets used to it, it is nothing, and the courses he arranges are also very easy, a person only takes one class a day, not that he is lazy, but that he can only teach the things learned in the school in the future generations until junior high school at most, and almost all the things he learns later are returned to the school, so he can't teach if he wants to.

However, just as Li Xiu was lecturing, he suddenly saw Yuechan running in a hurry, and then reported to Li Xiuyu: "Master, there are guests coming in front, saying that they have something important to see you!" ”

"Guest?" Li Xiu couldn't help but be a little surprised when he heard this, and immediately asked, "What kind of guest is it, have you been here before?" ”

"I've been here, didn't you entertain many court officials last time, sir, I remember that this guest was one of those people, but I don't remember his name." Yuechan thought for a while and replied, the day she said was that after Li Xiu and Princess Pingyang presented sweet potatoes and corn to the imperial court, many officials came to watch these two high-yield crops, and then Li Xiu entertained these people at home.

"The official who came that day, is he a middle-aged man with a national face?" Li Xiu first recalled, and then immediately guessed that there was a person, and only he had a reason to come to him.

"Yes, this guest has kept a straight face since he came in, as if he couldn't smile, and the slave didn't dare to ask more." Yuechan nodded violently when she heard Li Xiu's words, she also felt very stressed when she faced the guest just now, so she escaped from the living room without asking the identity of the other party.

"It's really him." Li Xiu also showed a rather helpless expression when he heard this, and then explained to Yuechan, "This guest's name is Wei Zheng, the official is the position of Prince Xian Ma, a high-ranking official of the third grade, and he may come often in the future, Yuechan, you don't let people be slow." ”

Hearing that the other party turned out to be a high-ranking official of the third grade, Yuechan was also a little surprised, you must know that the six books are only the third grade, but then she calmed down, with the status of her own master, it is normal for officials to come and go to the third grade.

At that moment, Li Xiu asked Li Chengdao and a few people to study by themselves, and then he strode to the front hall, and as soon as he entered, he immediately saw Wei Zhengduan sitting there, sipping tea with a straight face, there was no joy or anger on his face, and it looked like a human face carved out of stone, which was daunting, no wonder Li Shimin would have a headache because of him in the future.

"Xiaguan meets Wei Xima!" Although he was a little afraid of Wei Zheng, Li Xiu still stepped forward.

To Li Xiu's surprise, when Wei Zheng saw him, a smile appeared on his rock-like face, and he said very politely: "Li Xianjiu doesn't need to be polite, this official came today to talk about official business with Li Xianjiu!" ”

Wei Zheng said and took out a holy decree from his arms, and then handed it to Li Xiu, which made Li Xiu a little strange, opened it and looked at it at the moment, and found that this was an appointment, mainly that Wei Zheng was responsible for the promotion of corn and sweet potatoes, and if necessary, other officials should also fully assist him, which made Li Xiu a little helpless, he only made a decision yesterday, and the holy decree came down today, and what was worse was that Wei Zheng came immediately, and it seemed that he didn't want to be idle.

Sure enough, Wei Zheng waited until Li Xiu finished reading the holy decree, and immediately said: "Li Xijiu, I won't say much gossip, the promotion of corn and sweet potatoes still needs Li Xijiu's strong assistance, today I brought a few relevant officials to count the number of corn and sweet potatoes, as well as the growth situation, etc., and ask Li Xijiu to help us introduce it!" ”

"No problem, if Wei Xima is free now, I can take you there immediately!" Li Xiu immediately nodded and said, he knew that people like Wei Zheng didn't like to be polite, so he didn't talk nonsense, and directly agreed to take them.

Wei Zheng seemed to appreciate Li Xiu's resolute and resolute behavior, and stood up with a smile and left the living room with Li Xiu, and when he went out of the door, Li Xiu found that there were several officials of different ages standing outside, no need to ask, these officials must be Wei Zheng's assistants in promoting high-yield crops.

At that moment, Li Xiu took Wei Zheng and others to the corn field first, and then introduced the growth of corn to them, it is expected that this batch of corn will be harvested in the autumn, but what Li Xiu didn't expect was that after Wei Zheng came to the corn field, he waved his hand, and several officials he brought immediately stepped forward to count the corn, measured the land and wrote down the calculation on the paper, it is estimated that the approximate amount of corn is being calculated.

"Wei Xima, is it necessary to calculate so clearly?" Li Xiu also asked with some surprise when he saw this. In addition, he found that these officials actually used Arabic numerals when checking on paper, and it seems that Li Chunfeng's "Li Chunfeng's Arithmetic" last time was popularized well among officials, and it has reached the stage of practicality.

"It is necessary, although the yield per mu has been provided when Li Xijiu harvested corn last time, I believe that it is under the careful care of Li Xijiu, and the yield per mu will be higher, so it needs to be recalculated, and the growth of these corns also needs to be observed and recorded in detail, and these officials will come every day in the future, in order to facilitate them, they will temporarily borrow to live in a nearby farmhouse!" Wei Zheng replied with a blank look.

Li Xiu couldn't help but feel a little sympathetic to these officials under Wei Zheng when he heard this, with such a boss, they would have to suffer in the future, but the strange thing was that these people were all full of energy, and it really made people wonder what they were thinking in their hearts?

Calculated the approximate amount of corn, and how many corn seedlings can be held per mu, and then Wei Zheng asked Li Xiu about the things that need to be paid attention to when cultivating corn, such as watering, fertilization, etc., Li Xiu didn't understand these at first, but after planting corn for a year, Boss Liu and they summed up some, plus what Li Xiu saw and heard in his previous life, he could also talk about the truth.

Li Xiu said while Wei Zheng also asked people to write it down, in the words of later generations, these are the most precious first-hand information, and they will play an extremely important role in promoting corn planting in the future, otherwise if the corn is sent down, but because they don't know how to cultivate it, the yield will be reduced or even lost, which will definitely greatly hit the people's confidence in planting corn.

After Li Xiu finished speaking, Wei Zheng asked to see the sweet potatoes again, and Li Xiu had to take them to the sweet potato field again, which was actually the greenhouse next to Princess Pingyang's courtyard, but when he was walking there, he suddenly saw Wei Zheng, who was walking next to him, suddenly said: "Li Xijiu, I heard that you have a good relationship with Yang Nong and Yang Shangshu?" ”

"Huh? Why did Wei Xima say this? Li Xiu couldn't help but be stunned when he heard Wei Zheng's words, although he and Yang Nong had met, I am afraid that they would not have any friendship.

"Hehe, Yang Shangshu originally wanted to be responsible for promoting corn and sweet potatoes, and his first report said that he had the support of Li Xijiu, and said that he had a good conversation with Li Xijiu, it sounds like you should have a good relationship, right?" Wei Zheng smiled at this time, but his rock face really didn't seem to be suitable for laughing, no matter what smile he faced, it looked extremely stiff on his face.

"This ...... I'm afraid Wei Xima misunderstood, I only have one side relationship with Yang Shangshu, or the last time you came to see corn and sweet potatoes together, as for the friendship, I really can't talk about it. Li Xiu hesitated for a moment and said, he and Yang Nong really don't have a relationship, but he is quite sympathetic to Yang Nong now, and he doesn't know how this old man is now, if he has time, he can go and visit.

"I see, but Yang Shangshu is very respectful of Li Sai Wine, in fact, the official also admires Li Sai Liquor very much, not to mention anything else, when calculating the corn yield just now, he used the arithmetic passed on by Li Sai Liquor, which is very convenient and fast."

Wei Zheng rarely praised people, which made Li Xiu also feel flattered, but then saw Wei Zheng change the topic and said: "But Yang Shangshu's selfishness is too heavy, and I am worried that he is too old to be able to promote corn and sweet potatoes, so I took the initiative to fight for it, but Yang Shangshu was sick because of this, and the official was also guilty, but I came up with a solution." ”

"Oh? What's the solution? Li Xiu couldn't help but look at Wei Zhengdao in surprise when he heard this.

"In fact, it's very simple, sweet potatoes and corn are related to the well-being of the people all over the world, I can't do it alone, I need more people to help, especially the household department, if Yang Shangshu is willing, I hope he can be my deputy and work with me to promote these two high-yield crops!" Wei Zheng once again took a serious path.

robbed someone else's errand, and now he wants to let the family be his deputy, if others say so, it is likely to make people think that this guy is humiliating the loser, but the same words are said in Wei Zheng's mouth, but people will not feel like this, Li Xiu has also been staring at Wei Zheng's eyes, but only from his eyes to see the sincerity, first, he does need the assistance of the household department, Yang Shangshu will definitely not be able to bypass that level, and secondly, he doesn't want to really make Yang Shangshu angry, so he wants to share the credit with the other party.

Thinking of the above, Li Xiu finally said slowly: "Wei Xima's idea is good, but I'm worried that Yang Shangshu will not be able to accept it. ”

"Yes, I also have such worries, so I want to ask Li Saijiu to visit Yang Shangshu with me, I believe that Li Saijiu will definitely be able to convince Li Saijiu!" Wei Zheng finally said his plan at this time.

"Me? This ......" Li Xiu couldn't help but be stunned for a moment when he heard this, and then couldn't help but smile bitterly, Wei Zheng really knows how to find someone, this is not a good errand.

"Huh? What's that? Just as Li Xiu smiled bitterly, he suddenly saw Wei Zheng pointing to the field next to him and asked in surprise. (To be continued.) )