readx;?“ A question? Not only is the dust a little unclear, but Lu Bang and Yingluo are also at a loss. Pen? Interesting? Pavilion wWw. ｂiquge。 ｉｎfo

Xuan Bo calmed down for a moment, and then said, "The people of Qiguo are already good at things like magic calculations. At that time, when there was no such thing as a carrier of paper, wasn't it normal to write down a question on a rock in gold script? ”

"It's actually a question to prove the Pythagorean theorem. Of course, the Pythagorean theorem has been proven by many people and is not a new thing. But more than 1,000 years ago, the Qiguo people began to prove this problem, which is still very surprising. ”

The education of Qi attaches great importance to scriptures, history, and rituals, and most people have little contact with mathematics, which belongs to the category of Fangshu. So although the swirling wave was very lively, they were still confused about the pure law.

Xuan Bo looked at their expressions, shook his head, and then walked to the stone wall, pointed to the words on it, and continued, "These words were left by two people. The two of them seem to be proving the Pythagorean theorem together. One of them proves it, and the other doesn't. This is what the man who proved it wrote: The square of the three sides of a right triangle can be seen as three squares that are not exactly equal. Thus, to prove the Pythagorean theorem, it can be understood as to prove that the area of the square on two right-angled sides is equal to the area of the square on the hypotenuse. ”

So the man first made two squares on right-angled sides. He called the square formed by one right-angled side 'Zhu Fang' and the square formed by another right-angled side 'Qing Fang', and then he simply drew the method he wanted to prove into a 'Qing Zhu entry and exit map'. ”

"He moved the part of the figure that was 'out' in the picture to the position marked 'in' and put it together into an oblique square. He then called the oblique square a 'string square', which was exactly a square formed by the hypotenuse of a right triangle. ”

"After this to move, merge, spell, and make up, I naturally came to the conclusion that Zhu Fang + Qing Fang = Xian Fang."

After saying this, Xuanbo looked at everyone with hope, but what he got was a longer silence. "It's okay, you don't need to understand any of this, just understand the last few lines." Swirl Wave raised his voice and said.

"The last few lines are written that the person who proves the success says to the person who does not have the proof - I will wait for you at the intersection of Qingjin and Zhu Jin, and we will go out together."

As soon as Xuanbo's words fell, Jingchen understood: "Princess, you mean, we just need to find this intersection, because this person said 'go out together', so if you find this point, you will find a way out!" ”

"That's exactly what it means!" Xuanbo laughed excitedly.

"But where is this point, it can't be on this rock wall, right?" Lupin still had an expression of disbelief.

"Not on a stone wall, of course." "According to my analysis, the people of Qiguo have lived underground for many years and are accustomed to carving words on rocks to record things and express their thoughts. But they don't burn words wherever they want. ”

"On the contrary, I think that the people of Qiguo are very strict in their work, and they have engraved the words here, which must be related to this place. Just now, I carefully recalled the process of entering the underground stone chamber, as well as the shape characteristics of the stone chamber. ”

"There is a bold inference, the stone chamber where I was just now is the location of Zhu Fang in the 'Qingzhu Entrance and Exit Map', we will go back now, measure the length and width of the stone room, we can calculate the length and width of the outside Qingjin and Zhu Jin, and finally we can find the intersection of Qingjin and Zhu Jin."

As soon as the voice of the swirling wave fell, there was silence, and everyone was dumbfounded. Although I didn't understand what she was talking about, I thought it was very powerful.

Especially Yingluo, she was even more proud: "Princess, why don't you usually see that you are so powerful?" Simply, it's more than the old gentleman in the house knows! ”

Xuanbo was a little embarrassed by what she said, her face was slightly red, and she glanced at Jingchen quickly, but Jingchen looked at her with a demented face.

This made Xuanbo even more embarrassed, so he had to whisper: "The old gentleman in the house doesn't know these strange tricks, and I also know these calculation methods because I have learned some piano skills and am familiar with the rhythm." I happened to encounter this problem today in a book before, so it was easier to solve. ”

"Without further ado, let's hurry back and measure the length and width of the stone chamber. Strive to find the intersection written in the golden text as soon as possible. ”

After Xuanbo finished speaking, she let Lu Bang light it with a torch in front, and she followed behind and groped her way back into the stone chamber. When Jingchen saw them walking in front, he naturally played the role of the broken queen.

Back in the stone room, the campfire was almost burned out, but there was still some light. Whirlbo asked Lupin to add firewood to the campfire, and he began to measure the length and width of the stone chamber with a uniform stride. As expected, in the seemingly irregular stone chamber, a regular straight line is carved on the edge of the first wall, and the length and width are the same as a regular square after the measurement of the stride of the swirling wave.

Xuanbo found a few stones and recorded the number of steps on the ground, lowered his head and drew a few lines, marked some numbers, and calculated the number of steps required for some lines.

Finally, the swirling wave calculated the location of the intersection on the ground, then determined the bearing, and measured it without saying a word.

Jingchen looked at her focused and decisive thoughts, and the corners of her mouth couldn't help but smile slightly, and she thought to herself: "I thought she was a delicate royal princess, with clothes to stretch out her hands, food to open her mouth, and fat powder to her hands every day." Unexpectedly, she is actually a calm and neat woman, which is really impressive. ”

The swirling wave was concentrating on the measurement in front, and the pure dust had been silently following not far away. He paid close attention to every move around him, fearing that a beast would emerge from somewhere, or fall from the roof of the stone chamber and fall rocks, which would pose a danger to the swirling waves.

Suddenly, there was a voice of excitement from the front: "Found it, found it, the intersection is here!" There is really a faint light here! ”

As soon as her voice fell, Lu Bang and Yingluo, who had been sitting next to the bonfire, let out a burst of cheers: "Princess, you are really a lucky star in the sky, a fairy in Penglai, a goddess of Guanyin who saves suffering, and the slaves and maids follow you to be really a good karma cultivated in ...... previous life",

Before the two of them could finish their words of praise, Jingchen saw the blazing bonfire suddenly flickering twice inexplicably.

"Not good!" Jingchen shouted in his heart, and with a force of his toes, he bounced up from the stone ground and flew towards the swirling waves......