It's a double happiness!

If it weren't for the fact that it was getting late, going out of the city now, and not being able to enter the city when it got dark, Xue Lang really wanted to go and see. Princess Pingyang looked at his expression, and still didn't understand his thoughts, and said with a smile: "There are samples sent from both places, Youyang and I will have a look!" ”

"Okay, let's go!"

The two went to the study with great interest-

In fact, it was Xue Lang who was full of interest, Princess Pingyang was still so elegant and calm, just looking at Xue Lang like that, the smile on her lips was gone.

Follow Princess Pingyang to her study, and next to her desk, there are several sheets of paper that have not yet been cut, which are very large. Just look at the color to know that it is bamboo paper, in this era without bleach, bamboo paper is naturally yellow.

Xue Lang took a few steps, picked up the paper and looked at it, and sent a total of five sheets, probably because of the different material ratios, the texture of each paper is different.

Xue Lang has studied painting for more than ten years, and knows a lot about paper, so he knows which paper is suitable for what. He flipped through the five sheets of paper and picked out one: "This one is the softest, look at the other papers are different from this one, the masters should have found the reason, let them make it softer." ”

Princess Pingyang was puzzled: "This one can neither write nor paint, the most useless thing is it, why do you want to make it softer?" ”

Xue Lang's face turned red when he was asked, and he asked a beautiful woman who was like a flower and jade with a thousand manners, how could he say that this was used to make toilet paper? can only pretend to be mysterious and say: "You'll know when you make it!" ”

Princess Pingyang raised her eyebrows, seeing that Xue Lang didn't mean to say anything, she didn't ask anymore, but only asked someone to write it down. Xue Lang secretly breathed a sigh of relief, since he ran out of toilet paper he carried, he was reluctant to use cloth, so he bought the cheapest kind of paper, and when he used it, he poured a little water to make the paper softer. It's okay in the summer, but when you use it in the winter, the feeling is indescribably sour.

The remaining four were picked, and Xue Lang took out one: "Jianling, you try!" ”

Princess Pingyang nodded, Dusk Xue immediately stepped forward to take the paper, turned out the paper knife, quickly cut out the paper, cut out the paper, the first snow had already sharpened the ink, Princess Pingyang took a brush, groaned slightly, dipped in ink, and began to write on the paper-

It's only been seven days since spring, and it's been two years since I left home.

After people return to the geese, they think before the flowers.

Princess Pingyang's words are very good, not only the unique beauty of women's fonts, but also without losing muscles and bones, rich and handsome, put it in modern times must be calligraphy.

I read the poem when I read it a few days ago, and it was Xue Daoheng's poem. Xue Lang learned to paint, naturally understood words, his eyes lit up when he saw it, and he said busily: "Give me this word!" It's so well written! ”

Princess Pingyang was speechless, Chu Xue smiled "poof", and it was also this smile that Xue Lang reacted-

Anxious to appreciate what words, to see if the paper has scattered ink, etc., was embarrassed to laugh, wait for the ink to dry, pick it up and take a closer look: "Okay, calligraphy and painting are naturally the best rice paper, rice paper to be made of sandalwood and straw is the best, bamboo is not good, these bamboo paper for ordinary writing and printing is enough!" ”

Princess Pingyang took it and looked at it, nodded and said, "Then make paper according to this recipe." ”

Xue Lang nodded, took out his pen, took another piece of paper, wrote his name casually and tried it, and said: "You can also write pen words on this kind of paper, it's good, just follow this!" ”

Princess Pingyang nodded and looked at Chu Xue, who immediately wrote it down. After choosing the paper, Princess Pingyang asked people to bring silk cotton again. I sent her three horses, blue, pink, and dark red, all with patterns, and dyed very beautifully.

Xue Lang took it and looked at it, reaching out to touch it. Princess Pingyang said: "Blending has your guidance, in fact, it is not difficult, the difficult one is dyeing." It is really difficult to dye evenly and look good, but fortunately, after many days of study, it is finally done! ”

Xue Lang nodded, he didn't understand the problem of dyeing, when he went to the weaving workshop, a master asked him, Xue Lang couldn't help him, the masters could only explore it by themselves, otherwise, it wouldn't take so long.

"Which color does you think?"

Princess Pingyang asked. Xue Lang looked at Princess Pingyang, then at the cloth, and pointed to the dark red horse without hesitation: "This is beautiful!" When the Dragon Boat Festival is held, there will be a banquet in the Sage Palace, and you will make a skirt to wear, which will definitely be amazing, and it will also be a big advertisement, and when the cloth is launched, it will definitely sell well! ”

"Ahem, ahem!"

Chu Xue seemed to be choking on saliva and coughed several times. Princess Pingyang looked at him with a smile, seeing that Xue Lang was inexplicable, and asked cautiously, "Where did I say something wrong?" ”

Princess Pingyang glanced at him and said indifferently: "Nothing! Very good. ”

Xue Lang nodded reassuringly and said, "I'll go back and write a sales plan for you, it's almost the Dragon Boat Festival, you can do a wave of promotions, and you won't be afraid after opening up sales!" ”

"Great goodness! So please ask for the young sun. ”

"Well, just leave it to me!"

As he spoke, he patted his chest quite hesitantly. Princess Pingyang Wan'er inexplicably felt that Xue Lang was a little cute, but she no longer cared about his low emotional intelligence and lack of interest.

After a little silence, Princess Pingyang suddenly said, "Youyang, can you write an arithmetic book?" ”

"Huh?"

Xue Lang was stunned, pointed to his nose, and asked uncertainly, "I write?" ”

Princess Pingyang nodded: "Exactly!" ”

Xue Lang was slightly hesitant and not very confident. These days, since the crossing, I often read books in my spare time, and Princess Pingyang often found books to send to him, knowing that he was proficient in arithmetic, so she found the "Ten Classics of Arithmetic" to send to him.

The Tang Dynasty Guozijian had an arithmetic discipline, and he learned the "Ten Classics of Arithmetic". The "Ten Classics of Arithmetic" includes the earliest "Zhou Ji Sutra", "Nine Chapters of Arithmetic", "Island Sutra", "Wucao Sutra", "Sun Tzu Sutra", "Xiahouyang Sutra", "Zhang Qiujian Sutra", "Five Classics Sutra", "Ancient Sutra", and "Fixation" ten books.

The study of mathematics and geometry in the Ten Classics of Arithmetic has been quite profound, leading the rest of the world for many times in the same era, involving numerators, denominators, open squares, open squares, positive and negative numbers, equations and other calculation methods, and the concepts and mathematical names involved have been used to later generations.

Xue Lang is not a specialist in mathematics, and the level of learning is ...... Estimate it yourself, it's similar to the "Ten Classics of Arithmetic", you can't write calculus or anything, he is only a little superficial, and he is not proficient. I can't understand it myself, so I go and write a book...... Is it considered a class to get an axe, smiling and generous?

Xue Lang has no self-confidence!

After he spoke out about these concerns, Princess Pingyang said angrily: "Confused! Youyang was quite far-sighted in the past, why was he so short-sighted in this matter? ”

Is there any great significance in writing a book of arithmetic?

Xue Lang said that the brain circuits were different, and he couldn't understand it at all, so he simply gave his hand: "Please give your Highness advice!" ”