"Now look at the planks here, my brother will teach you ten Arabic numerals first."

In order to better teach his sisters to study, Tao Ran made a simple blackboard by himself.

"Brother, what are Arabic numerals? What a strange name, huh? The big girl spoke.

"Yes, yes." The younger sisters all chattered.

Even Qianqian, who has been studying hard, expressed deep curiosity about the Arabic numeral in Tao Ran's mouth.

“1.2.3.4.5.6.7.8.9.0”

These are lowercase Arabic numerals. Numbers that will be used in future mathematical addition, subtraction, multiplication, and division. ”

"Now you start to practice how to write Arabic numerals, and you need to practice writing more diligently, so that the numbers you write will be more beautiful and beautiful."

"Now start writing each number for each person, write ten times to see who writes beautifully, okay?"

"Good..."

The four little girls and the Qianqian girl said in unison.

"What for? So lively? The black big Cheng Chumo and the second Cheng Chuliang strode over.

"Brother, you're teaching us to learn, Brother Chu Mo, Brother Chu Liang is also here." The eldest girl replied obediently.

"What the hell is this?" Cheng Chumo stared at the Arabic numerals on Tao Ran's blackboard and said.

Tao Ran smiled but did not speak.

"Brother, say it's Arabic numerals." The eldest girl has temporarily become Tao Ran's translator!

"Learning this works?" Cheng Chumo looked at Tao Ran and asked.

"Certainly useful, and very useful. Take you for example, you have 3,000 soldiers, each of whom eats three or two meters a day, do you know how much rice is consumed in a day? Tao Ran asked!

"This, this has to be calculated by the fire chief officer to know." Cheng Chu scratched his head silently and said.

"Why bother with the firehead official, this thing can be calculated at a glance." Tao Ran said with a smile.

"Brother, how can such a complicated thing be counted at a glance?" Cheng Chumo asked with wide eyes, and the others were also stunned and waited for Tao Ran's explanation.

"When you learn these so-called ghost drawings, I will naturally teach you how to figure them out at a glance."

"Is that true?" Cheng Chumo said excitedly.

"No jokes." Tao Ran's answer was categorical.

Because Tao Ran knew that Cheng Chumo in history had suffered the loss of no culture, so in addition to the hereditary title of Duke Lu Guo, it can be said that he has been doing nothing in the officialdom.

Now that I have identified this good brother, of course I can't sit idly by, and what should be changed should be changed from now on!

"Okay, my brother believes in you, and I'll learn this thing from you."

"It's Arabic numerals." The big girl covered her mouth and smiled.

"Yes, Arabic numerals." Cheng Chu scratched his head silently and said with a smile.

"Brother, I also want to study with you." Cheng Chu, who had been standing behind Cheng Chumo, came out and said.

"Okay, Brother Chu Liang will also study with him!" Tao Ran happily agreed to Cheng Chuliang's request.

Originally, mathematics was a very boring and boring subject, and Tao Ran's least favorite thing to take when he was in school was math class.

Every time I see those cold numbers, I feel a kind of resistance in my heart.

Until one day, Qianqian transferred from another school to their school, and she happened to be at the same table as Tao Ran.

All this began to change, Qianqian's math scores were very good, good to the top of the whole grade, and she also represented the school in the Olympiad and won prizes.

In order to have a better sense of presence in front of the goddess, Tao Ran began the long road of desperately tutoring math classes.

It was also during the period when Qianqian helped Tao Ran tutor in math class that the two began to have a hazy relationship......

"Brother, what's wrong with you?" The eldest girl's words pulled Tao Ran back from her memories.

"It's okay, brother is okay, brother, look at what you wrote?"

"Brother, look at me first." The big girl raised her hand and said.

"Well, the big girl is well written, and it will definitely be beautiful in a few days."

"Thank you, brother, for the compliment."

Tao Ran finally walked in front of Qianqian, and what Qianqian wrote should be the best among the five of them.

After all, Qianqian has been in private school for a few years in disguised as a man.

"A few of you are very well written, it would be better to practice more after class."

"Let's start teaching you addition, subtraction, multiplication and division, addition and subtraction are relatively simple, and the focus is on the decimal system...... Multiplication and division are a little difficult, but my brother will try to make all the complicated formats as simple as possible. ”

The five little girls and the Cheng Chumo brothers wandered in the ocean of knowledge under the guidance of Tao Ran......

～～～～

After Du Ruhui, the secretary of the military department, said goodbye to His Majesty Li Er, he immediately summoned the commander of the 16th Guard and secretly arranged the security of the Chang'an Houfu.

In the end, it was determined that Zhou Haipeng would lead nine Praetorian Guards with excellent cavalry and archery skills to secretly protect Chang'an Houfu and implement an all-weather rotation system.

His Majesty Li Er, whenever there is a happy event, he will share the joy in his heart with Empress Changsun, and this time is no exception.

"Guanyin, you listen to a poem first." His Majesty Li Er opened his mouth and recited.

"On the afternoon of hoeing day, sweat drops into the soil, who knows that the Chinese food on the plate is hard work."

His Majesty Li Er looked at the eldest grandson empress with a solemn look and smiled proudly.

"Erlang, isn't this poem also made by Chang'an Hou?"

"It's still the most painful thing for Guanyin to watch! Queen, how did you guess that it was from Chang'an Houfu? His Majesty Li Er asked suspiciously.

"This is not simple, such a masterpiece, if it weren't for Chang'an Houfu, would have been known to the world for a long time, and it would have been familiar to everyone." Empress Eldest Sun said with a smile.

"The master of Chang'an Hou is indeed a person with great literary talents, such a masterpiece is really enough to leave a legacy for eternity, the important thing is that such a poem is of great significance, and it is a first-class masterpiece for teaching children."

"Guanyin, in one sentence. Today, His Royal Highness the Crown Prince heard this poem when he was teaching students in Chang'an. ”

"Oh, Erlang, Chang'an Hou has started lecturing?" Empress Eldest Sun asked with concern.

"It's the beginning of lecturing, but there are only his four younger sisters, and there seems to be another one, who is also a girl."

"It's really interesting, Chang'an Hou lectures to his own daughter, Erlang, no, I'm going to take a look. Although our court, as well as the girls of the princes and grandsons of the aristocracy, can receive a considerable education, but there are also restrictions, as for the girls in the classroom, in addition to our princesses, there are not many ministers of cultural relics, right? ”

"Yes, I don't know what Chang'anhou wants to do, but I don't think it's a bad thing."

"It's a bad thing, it's definitely not a bad thing, the concubine is just curious about what homework Chang'an Hou will teach the five girls."

"Guanyin, there is another big event, Chang'an is trying to plant a kind of food with a yield of 800 catties per mu."

"Erlang, what did you say?" Guanyin couldn't close her mouth in surprise.