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"That's it! Then let Providence decide everything! It's really a mediocre person to be a husband, hehe! Yang Er also seems to have figured it out, if the death of the fourth brother can be exchanged for the annexation and development of Shudi, then the death of the fourth brother is valuable. Why bother thinking about it?

"Master, these abacus problems left by Sister Dai for Shimin are too difficult, when will you be able to use 4-digit multiplication and division!" At this time, Xiao Li Shimin ran in from outside and complained to Yang Er.

Since Li Shimin worshipped himself as a teacher, basic arithmetic such as abacus was taught by Wang Dai, and sword and horse kung fu also allowed Xiao Li Shimin to learn from Zhong Jian and Chuchen, Confucianism is still in charge of Chai Shao, and he only cares about him in the concept of governing the country that he is most interested in. Now, homework is difficult to do, and Xiao Li Shimin came to himself to complain.

"Hmm~ Show the homework left by Sister Dai to the teacher."

"Here, to ~ master." As he spoke, Li Shimin handed the booklet in his hand to Yang Second.

Yang Er flipped it open and looked at it, and immediately laughed. It turned out that the abacus homework left by Wang Dai for him was all 4-digit multiplication and division questions, and there were additions and subtractions in between, and each question was a string of capitalized numerical Chinese characters, which was extremely difficult to recognize or read. When Yang Er saw it, he thought that it was necessary to introduce Arabic numerals and operation symbols, otherwise, this arithmetic would not be popularized, and it would be impossible to learn it with numerical Chinese characters.

"Shimin, go and call Sister Dai, your brother-in-law, and Shopkeeper Zheng here, and tell them if you have something to do with the teacher." Yang Er felt that the best students to learn Arabic numerals now were these people, and decided to start with these people around him.

Soon, under the leadership of Xiao Li Shimin, these students all arrived in Yang Er's room. I don't know why?

Seeing that everyone had arrived, Yang Er handed over Xiao Li Shimin's homework book to these people to read. Wang Dai looked at the questions she gave Li Shimin and didn't feel any difference, so she looked at Yang Er strangely and asked, "Husband, is there anything wrong with the abacus homework left by the concubine for Shimin at this time?" ”

"It's not that the question is inappropriate, but that all the numbers are expressed in Chinese characters, which is very unintuitive and difficult to remember. This requires a different symbol to represent the number. ”

"Childe, my Chinese nation has written like this since it has numerical Chinese characters, and it is also written like this in the account books of various housekeepers, and I don't think it's inappropriate?" Zheng Xu, who deals with accounts the most, said.

"Whether it's proper or not, I'll make a decision after my son teaches you another way to count." After speaking, Yang Er picked up the pen and quickly wrote a string of Arabic numerals from 0~9 on a piece of white paper that had already been spread, and at the same time wrote the corresponding numerical Chinese characters below.

"Ladies and gentlemen, all the numbers in life are nothing more than a combination of these 10 numbers, if you use these 10 simple symbols above to replace the complex number Chinese characters, wouldn't it be easier to read and remember? Even when writing, the speed is also very fast, and this son decided to popularize this kind of symbolic number in my Da Sui arithmetic subject. Shimin, you can replace all these questions in the workbook with these number symbols. Yang Er didn't care about Chai Shao and Zheng Xu, who were still shocked, and commanded Li Shimin. Wang Dai also came over to help Li Shimin replace the complex Chinese character arithmetic problems with number symbols.

Because it was too simple, the two of them quickly completed the replacement of several questions.

"Master, it's over, can you see if that's the case? It feels really easier to remember than Chinese characters and numbers, and it's much simpler. Li Shimin said happily and handed the homework book to Yang Second-hand.

"Hmmm! The replacement is good, come to Sichang, Zheng shopkeeper, you also compare. You can memorize these 10 number symbols by simple memory, and you will use these numbers to replace the writing of Chinese characters in the future. ”

"Childe, this seems to be very simple! The numbers are weird, but they're easy to write and remember. If it can completely replace the number counting writing method since ancient times, it will be a revolution that will open the world! Zheng Xu also became excited, to be honest, these traditional business families have long felt that it is inconvenient to count numbers with Chinese characters, but they don't know how to improve. Now suddenly a good method is presented in front of him, which makes Zheng Xu, who often deals with numbers, dislike.

"Shimin, let's use the abacus to do the math and see how it feels?" Chai Shao's eyes lit up, and he hurriedly said to Li Shimin, who was still complacent.

"Good!" Xiao Li Shimin agreed, hurriedly took an abacus, read the numbers in his mouth, and skillfully moved the abacus with his two little hands, and Wang Dai on one side was also doing the same calculation on the other abacus, but he didn't keep reading the numbers like Li Shimin, and even kept reciting the abacus formula.

Soon, both of them finished these questions, and the results of the comparison were exactly the same. This also shows that the abacus process of the two people is the same, and the answers calculated are also the same, and they are all correct.

Looking at the astonishing speed of the two, Zheng Xu was stunned at first. Because even if he can use the abacus proficiently, he doesn't dare to say that he can finish these extremely difficult questions so quickly, because the Chinese characters and numbers are too drawn after all, and they are not as intuitive and easy to remember as the new combination of numbers.

"Childe is a true god! If I were to use this number symbol to record numbers directly with the schoolchildren, it would greatly improve the arithmetic ability of the schoolchildren. Chai Shao couldn't help but applaud.

"Well, from now on, starting from the people, arithmetic will use this kind of number symbol to calculate. If you still can't remember it, you can copy a copy and let everyone around you learn how to use the new numbers. ”

"Yes, there are more than 30 people in my Zheng family's caravan, and they are also the elite of my Zheng family. Zheng Xu said excitedly, and recorded the string of numbers on the table with a pen in his hand. It's just that when I first wrote these 10 numbers, it still seemed extremely awkward, and the writing was crooked, like a string of symbols drawn on white paper.

"Wait, I'll write a copy for you again." Looking at the crooked figures written by Zheng Xu, Yang Er frowned, how can this work? It's like a ghost drawing that I've written.,How do you teach those students.。 Let's write a few specifications by yourself!

"Thank you Childe for the word! I'll wait and be a good student, copying and writing well. Not only did Zheng Xu take one, but even Chai Shao followed to get one. Xiao Li Shimin is smart and clever, he has already learned these numbers, and now he is clamoring for Wang Dai to use number symbols to make a few more abacus problems for him!

"Brother Shi, with this set of number symbols you invented, you can be called a generation of grandmasters in my Taoism, which is far more comparable than others." Izumi said sincerely, and he was also happy. When outsiders are present, she still habitually calls Yang Er her brother, and if she calls Yang Er her husband like Wang Dai, she is still a little speechless.

"Hey, hey, hey~ This grandmaster doesn't dare to be a husband! I just think it's more convenient. Yang Er replied with some flattery. The heart said, just take the things of the kindergarten in the future to use here, and become a grandmaster, isn't it too ridiculous? By the way, if the Chinese pinyin used for the enlightenment of children and students is used to make it out, it is not called a "saint".

Then along the way, the group was no longer bored, and even a few of Yang Yang's personal generals began to secretly learn numbers. Li Shimin was more interested in arithmetic in the car, pestering Wang Dai to keep asking him questions, and laughing loudly when he got it right. Zheng Xu even took the time to convert all expenses and income into Arabic numerals all the way in the car. In the evening, he used the abacus to calculate the expenses of the day, which was significantly faster than before, which made him very excited.

On this day, I arrived at Yuanshan Town, and it was less than a day's journey from Zitong, and Chengdu was getting closer and closer.

"Childe, the closer you get to Chengdu along the way, the fewer people there are, and there are many wastelands in the fields." Chai Shao said to Yang Er outside the car window.

"Shuzhong originally had a small population, and coupled with the isolation, it was not easy for outsiders to come in, but it was a pity that this great field was great!" Yang Er said with a sigh.

"The further south you go, the flatter the terrain becomes, and if all the flat land is developed, you can easily get countless fertile fields, which is a pity."

"Shu is blocked, the road is impassable, even if there is more in the field, it can't be sold if it can't be eaten. Therefore, the family in Shu did not want to cultivate more fields. Alas! If Brother Sichang is in charge of Shuzhong in the future, this population will be a big problem. Yang Er knew that from the dispute at the end of the Han Dynasty 300 years ago to the chaos of the Eastern and Western Jin Dynasty and then to the chaos of the Northern and Southern Dynasties of China, the population of the Han nationality was greatly reduced, and Shuzhong was no exception, and the loss of population was also quite heavy, and it was not slowed down until the beginning of the Sui Dynasty. Now Shuzhong is a vast and sparsely populated scene, and most of the deserted land is fertile land, and the current Shuzhong is far from the point of the country of abundance, which will be the first problem to face in the future Chai Shao to govern Shu.

"Childe, can you move people from Hanzhong or Jingzhou to Shu? In order to solve the famine in Shuzhong. ”

"Alas! There are so few people everywhere now! There is still more fertile land to be cultivated south of Jingzhou, where can he have a surplus population to fill in Shuzhong? The situation is even worse in Hanzhong. ”

"So how to solve it? I also asked my son to advise Yu. ”

"It's almost Chengdu, after Zitong is Guanghan, Chengdu is a big plain! The people of Shu are mostly concentrated in this rich plain. If you want to solve the population problem in Shuzhong, you can make the various barbarian tribes in the high mountains around the Chengdu Plain go down the mountain, and there are a large number of southern barbarian alien tribes in Qianwei County south of Chengdu, and they can exchange land for them to go down the mountain to cultivate, and at the same time, supplemented by Han and barbarian intermarriage, so that they can be naturalized as soon as possible. This is a solution to the population. ”

"The Southern Barbarian tribe that Gongzi said, but the descendants of Meng Shu, the barbarian king conquered by Prime Minister Zhuge of Shu Han?"

"Exactly! To the south, there are many people of the Nanban tribes, not far to the west are the tribes inhabited by the Qiang group, and to the north there are the Tubo tribes. If you want to govern Shuzhong well, the key lies in how to integrate the people of all ethnic groups. Of course, you can also move the people of Padang to the east. ”

Chai Shao listened, nodded and pondered. Since Yang Er intended to send him to Shuzhong as the assassin the day before yesterday, Chai Shao has entered the role in advance, and he has accompanied Yang Er all the way in order to ask for advice at any time. Today's mention of the population issue has made Chasauton feel that the burden on his shoulders is really not light. None of the three barbarian tribes mentioned by Yang Er is easy to solve, and any of them will take a long time to integrate. We will need to figure out how to do this in the future.

"Brother Sichang doesn't need to worry too much, the descendants of Nanban Meng Shou should not reject my Han people now, just send an envoy to meet the Nanban King to negotiate, and promise that with generous conditions, Nanban will go down the mountain. The Qiang tribe in the west is different from the Tuyuhun Qiang people, these Qiang people in Shu are not barbaric, it turned out to be Han and Qiang mixed inhabited, and the Qiang people will inevitably move eastward to cultivate the fertile land of the plains. There is only one vein of Tubo in the northwest, which has not been civilized, and it is even barbaric, but it has to be guarded against, when Xu Tuzhi. In fact, as long as the waterways are smooth and the economy is prosperous, it will not be a problem for the barbarians to go down the mountain or the people of the Central Plains to settle in Shuzhong. ”

"Thank you, Childe! Chai knew how to do it. After Yang Er's call, Chai Shao gradually understood the direction of his future governance of Shu, and his mood suddenly became cheerful.

"My brother-in-law also needs to run more schools and recruit more children of different races to enroll, so that they will naturally integrate into my Han family when they grow up." Xiao Li Shimin interjected.

"Huh! What the people of the world said is that our Han culture has been inherited for thousands of years, and if the barbarian children learn from an early age, they will naturally integrate into our Chinese nation when they grow up. Yang Er couldn't help but smile after listening to Li Shimin's addition.

Chai Shao, who was riding a horse outside the window, nodded frequently when he heard this, and said in his heart, this allows children of different races to learn my Han culture, which is a step-by-step integration method. After two generations at most, it can completely solve the stubborn problem of lack of people in Shu.

"Childe, Zitong is coming. When you arrive in Zitong City, you can find out the news of the King of Shu in Chengdu. Zheng Xu returned to report before Yang Erche's battle.

"Good! It was still early, so I would go into the city tonight and stay. After the shopkeeper Zheng entered the city and settled down, he arranged for his men to go to various places in the city to inquire about the recent news of the King of Shu. ”

"Yes, Childe."

When I entered Zitong City, it was already the time to hold the lamp. The shops on both sides of the street have closed, except for the inns and liquor shops, whose doors are hung with bright lanterns, and which are still open to welcome merchants.

When the stay and dinner were over, the entire Zitong City had already fallen asleep. The matter of finding out the news of Yang Xiu, the king of Shu, can only be said after tomorrow's dawn.

"Shimin, it's late at night, go back to the house and sleep, and get up early tomorrow to practice."

"Master, wait a minute. This is the end of the people. Okay, it's finally done, please take a look at it. ”

Yang Er took a few pages of the manuscript full of symbols and words in Li Shimin's hand and read it, and while looking at Yang Er's face, he showed a smile, and nodded and praised, which made the little Li Shimin, who was waiting for Yang, have a bright smile on his face.

"Shimin is really smart, in just two days, he really compiled the "Abacus Arithmetic", and it is easy to understand, and it can be used as an enlightenment textbook for 6-year-old children. First put it here for the teacher, so that after a slight revision, the teacher can go back to Beijing to print and distribute. With this enlightenment textbook, I can be proficient in arithmetic as a 10-year-old child, and the people of the world should be indispensable! Yang Er praised without hesitation.

"Master, the disciple doesn't dare to be greedy for merit, it's all up to the master's teaching to the disciple in the car in the past two days. Besides, these "Arabic numerals" are also from the hands of the master, and the master should be the first meritorious, and the disciple second. ”

"Well, don't be modest. Wake up and go to sleep, and I'll get up early tomorrow to practice swords! Yang Er gently patted Li Shimin's head and said.

"Then the master disciple went. By the way, I also asked Sister Dai to copy a copy for Shimin, Shimin's handwriting is really ugly. After speaking, Li Shimin made a strange face and ran out of Yang Er's room without looking back.