Chivalrous Song Dynasty

She quietly held Bai Sheng's right hand, and when she was about to persuade her, she heard Bai Sheng mutter: "Good guy, after the listening test and then the math test, it's like a fucking college entrance examination." Suddenly she raised her voice and said: "Okay! Then you can talk about your topic first!"

It's over, Xiao Feng felt cold, Bai Sheng accepted the move.

Unable to bear it, he pinched Bai Sheng hard, thinking what trick are you going to take?You don't accept the move, you don't have to admit defeat, just follow Jiang Jing's words, isn't it good?Just say that these knowledge are heretical, you don't bother to delve into it, let alone compete with others, isn't that saving face?

But it's different after receiving the trick, if you can't solve it after receiving the trick, then your skills are not as good as others!The nature of this matter has changed!

Chapter 119 Two Rat Lips

It's too late to say anything now, because Jiang Jing is already writing a question:

"Today there is a wall five feet thick, and the two rats wear it opposite each other. The rat is one foot a day, and the mouse is also one foot a day. The rat doubles every day, and the mouse half a day. When will the two mice meet again, and how much will each wear?"

Bai Sheng was confused and didn't quite understand the meaning of this question.No way, Song people can understand the vernacular, but Jiang Jing is now speaking written language, so it is difficult to understand.

Although he memorized a lot of famous lines and poems during the filming before the time travel, he has never been exposed to this ancient arithmetic problem, not to mention he has never been exposed to it, even the screenwriters and directors did not talk about it.

If you ask Jiang Jing, it will make you look uneducated, but it is not ashamed to ask his wife, so he turned to Xiao Feng and asked, "What does he mean?"

Xiao Feng glanced at Bai Sheng suspiciously, feeling a little depressed.My heart said, why can't you understand this?Really do not understand or false do not understand ah?

Recalling when I first met Bai Sheng, just looking at Bai Sheng's appearance, he had a poetic and bookish temperament, and if we talked about poetry and couplets, there were quite a few clever lines and finishing touches, it would be like I thought he was a well-educated literati.

But as the contact between the two parties deepened, she found that her understanding of Bai Sheng became more and more blurred. Just by the way he held the pen, she knew that he was not good at calligraphy, and now she couldn't understand this simple written classical Chinese. who?

Anyway, since Bai Sheng asked himself the question, he had to explain it to him, so he translated: "He said: There is a five-foot-thick earth wall, and two mice made holes from opposite sides of the wall. The big mouse On the first day, one foot will be advanced, and the progress will be doubled every day. The little mouse will also advance one foot on the first day, and the progress will be halved every day. If this continues, how many days will the two mice meet each other, how many feet of earth wall will each cross?"

After translating, the hostility toward Jiang Jing inevitably became stronger. He glared at Jiang Jing and said bluntly: "The surname Jiang, even if you are the best in the world in arithmetic, why do you tease him like this? You have to ridicule his nickname when you ask a question. , It’s too much! I’m going to learn your martial arts later, and see if you, Huangmen Mountain, are cheating the rivers and lakes by talking about it!”

These words were already tantamount to declaring war on Huangmen Mountain openly, and everyone on both sides was shocked when they heard it.

How is Xiao Feng's martial arts?No one knows except Bai Sheng.The three of Fan Rui only knew that her name was Song Junyi, she disguised herself as a man and was Bai Sheng's wife and master, but she herself refused to admit that she was Bai Sheng's wife.Other than that, people don't know anything about her martial arts.

What Fan Rui and the others didn't know, the Huangmenshan Four Bandits didn't even know, but looking at the aura of this beautiful scholar, one can guess that his martial arts are by no means ordinary, and those who are ordinary in martial arts will not have such a strong aura.

Can you not fight?The four of Huangmenshan thought so, so their eyes were a little timid.However, the three of Fan Rui wanted to see the kung fu of their siblings, so they glared at each other at the same time, and the atmosphere in the field became extremely tense for a while.

Ou Peng and the others were secretly complaining, but they refused to blame Jiang Jing. They only looked at Jiang Jing's attitude. As long as Jiang Jing made it clear that he would turn his back on them, they would stand shoulder to shoulder. Nothing is more important than loyalty. matter.

Realizing his mistake, Jiang Jing hurriedly tried to make it up, and hurriedly apologized: "My friend, you have misunderstood. This is a calculation problem in Chapter 7 of "Nine Chapters of Arithmetic", which is the original text of the title. Jiang Jing There is absolutely no intention of mocking Master Bai."

In fact, the reason why he chose this question to test Bai Sheng was really because Bai Sheng's nickname reminded him of it, but he really didn't mean to ridicule Bai Sheng deliberately.

Seeing that the other party's attitude was more sincere, Xiao Feng relaxed slightly, and said coldly, "I hope what you said is the truth."

Bai Sheng's side has already been moved so much, what could be more heart-warming than his wife coming forward to protect her husband's interests?Hastily grabbed Xiao Feng's arm, and persuaded: "Don't be angry, I won this match with him first."

"What?" Xiao Feng's crescent eyes widened, "Did I hear correctly?"

Seriously speaking, the real reason why she wanted to fight Jiang Jing was because she became angry from embarrassment. It was obvious that Bai Sheng couldn't win this bet, and she would be exploited by others. How could she not be annoyed?But Bai Sheng actually said that he could win, so the situation is different.

Is there any way to have a longer face than Bai Shengsheng?Wouldn't it completely destroy the opponent's confidence to defeat the opponent in the field that the opponent is best at?Everyone understands this truth, but Xiao Feng really can't believe it.

Bai Sheng's palm moved down Xiao Feng's forearm, warmed the slightly cold catkin with his palm, and reconfirmed: "Well, you heard me right, I can solve this problem, but it needs to be solved. Go get the Four Treasures of the Study."

Xiao Feng was confused again: "This is arithmetic, what are you doing with the Four Treasures of the Study?"

Indeed, before the Song Dynasty and even before the Song Dynasty, people did not use pens for arithmetic, but used arithmetic tools such as counting chips.Until the abacus was invented, people began to use both calculation and abacus, but still no one would use this method of writing calculations.

In this era, the role of pen and paper is roughly limited to recording questions and answers. Of course, it can also be used to describe the thinking and logic of solving problems, but there is no formula to speak of.

Bai Sheng said softly: "You just go and get it, listen to me, when did you see me do something useless?"

Xiao Feng thought about it, Bai Sheng really didn't do any useless things, even that time when he went out in the trench was of great use!After thinking about it like this, he didn't ask any more questions, and went to the side of the mount to fetch the Four Treasures of the Study.

"Grind the ink." Bai Sheng took the brush, spread out the piece of paper sent by Huang Chang's maid on the table, turned the back of the paper up, and waited for the ink.

Jiang Jing and the others were all puzzled, wondering what Bai Sheng wanted to do, and Xiao Feng also started to grind ink in a cloud of mist. Did he have to write an "Preface to Arithmetic Collection" before doing arithmetic? "No way?

After a while, the ink was polished, but Bai Sheng dipped the brush into the inkstone, and then wrote some strange things on the paper.She could barely recognize a few of the words, and felt that those words were ugly like earthworms crawling out:

"Solution: On the first day, 1+1=2 feet, and there are 3 feet left;"

"The next day, 2+0.5=2.5 feet, 0.5 feet left;"

"On the third day, suppose it takes X days. Then there is (4+0.25) X=0.5"

"X=0.5÷4.25≈0.18 (day)"

Bai Sheng used the arithmetic method plus the algebraic method, horizontal plus vertical, to solve this arithmetic problem that is roughly equivalent to the difficulty of the third grade of primary school, and after converting the size, hour and hour, and quarter to hour conversion, it is almost used up. A piece of rice paper, and then write the result as follows:

"It takes two days and one hour and three quarters for the two mice to meet each other. When they meet, the big mouse penetrates the wall for three feet, four inches and seven minutes, and the little mouse penetrates the wall for one foot, five inches and three minutes."

After finishing writing, he looked up, but what he saw were blank faces. He found that the eyes on these faces were looking at his face, as if the answer was written on his face and it was wrong.

Including Jiang Jing and Xiao Feng, no one read his last written answer, and couldn't help panicking, did I make a mistake?Otherwise, why don't these people look at the results I calculated?I deliberately used traditional Chinese characters!

He didn't know that this eloquent piece of calculation paper had long stunned the onlookers. No one could understand the Arabic numerals like "12345", let alone the four arithmetic formulas of addition, subtraction, multiplication and division, and one yuan once. The equation is up.

Everyone thought he was doing something like a ghost drawing, so why would anyone insist on watching to the end?

"What are you looking at? Hey, wake up, I've figured out the result, Mr. Jiang, let me read the answer to you and see if it's right."

Chapter 120 Brain teasers

Bai Sheng immediately picked up the calculation paper and read aloud: "It takes two days and one hour and three quarters for the two mice to meet each other. When they meet, the lips of the big mouse are three feet four inches and seven inches, and the lips of the little mouse are one foot five inches and three inches." Points. Is this answer correct?"

Whether it is correct or not, no one knows except Jiang Jing, so everyone turned their eyes to Jiang Jing, only to see that Jiang Jing's face was ashen, with an expression of extreme fear, but he refused to speak for a long time, and only looked at him with dull eyes. Bai Sheng, I don't know what he was thinking.

It seems that Bai Shengjie is wrong, people can only think so.Or maybe Jiang Jing was worried that speaking out about Bai Sheng's mistakes would cause a fire, which is unknown.

People just looked at Jiang Jing, then at Bai Sheng, and Bai Sheng was a little more sure, because in the process, he looked at the calculation paper and checked the calculation again, and the result was correct.

After waiting for a while, Bai Sheng couldn't help urging: "Master Jiang, let me ask you, is my answer correct? Don't you know the answer to this question?"

Jiang Jing just woke up like a dream, and he bowed to Bai Sheng to the ground, "Master Baizhai is really a genius! Jiang is so admired! Your answer to this question is more accurate than mine, so I ask Master Baizhai to draw up the answer." Question, let me try to solve one or two."

It turned out that Jiang Jing had been comparing Bai Sheng's answers just now. The ancients generally did not have the habit of being accurate to two decimal places in arithmetic. Although Zu Chongzhi accurate the pi to seven decimal places, ordinary arithmetic problems do not pay attention to these, so Jiang Jing The "standard answer" given by Bai Sheng is rougher than that calculated by Bai Sheng.

At first, he thought that the result of Bai Sheng's calculation was superfluous, but after repeated mental calculations, he found that Bai Sheng's answer was more accurate, and he was already desperate for Bai Sheng's amazing talent, so he became ashamed.

But after all, he doesn't want to simply admit defeat in the field he is best at, and wants to make a final fight. What if Bai wins the problem and he solves it?So does it mean that Bai Sheng is only temporarily tied with himself?

Here, Xiao Feng felt proud after hearing Jiang Jing's approval, and looked at Bai Sheng with sparkling eyes: "What method did you use to calculate it? Teach me?" She intuitively thought, Our own country needs to develop this knowledge.

Bai Sheng didn't think too much, and nodded generously: "No problem, you first ask me to be your teacher, and I will teach you."

It is not difficult at all to teach a woman who is not stupid and make her reach the arithmetic level of the second and third grades of elementary school, especially when teaching and learning side by side, isn't it boundless joy?