After the news in the "Datang Daily" reached Guozijian, it once again caused an uproar, especially in the arithmetic hall, which caused an unprecedented shock.

Because Li Zexuan was angry and "resigned", not only did he "take" all the students of the Arithmetic Museum, but even the original Mr. Xu Hongzhi of the Arithmetic Hall was also "dug up", and the Arithmetic Hall once fell into an embarrassing situation of having no Mr. and no students.

In desperation, Kong Yingda personally came forward and invited Liu Hongyuan (Xu Hongzhi's mentor), the original doctor of arithmetic who was at home, to go out of the mountain again, and selected a group of students from various state capitals to supplement it (after all, the majority of students are willing to go to Guozijian this year, although Yanhuang Academy is also very famous now, but the reputation among the people is still not as good as that of Guozijian, the first official school of the Tang Dynasty), and the arithmetic hall has resumed normal teaching!

It is worth mentioning that the enrollment scale of the Mathematics Hall this time has expanded by about two times compared with the previous one, with a total of 71 students enrolled, and there is a great tendency to compete with Yanhuang Academy in the field of mathematics.

In addition to recruiting more students, Kong Yingda also hired three teaching assistants for the Arithmetic Hall to help Liu Hongyuan teach the Arithmetic Hall. Therefore, today's arithmetic hall is more than one grade higher than before in terms of both the scale of students and the scale of teachers!

Inside the Arithmetic Museum.

"Eh, have you heard? Yong'an Hou made a simple needle throwing game, and he could simply calculate the approximate value of the ancestral rate, which is amazing! ”

"I've seen it, but I think it must be a coincidence, right? After all, whether the needle pressure is not pressed or not is completely a matter of luck, and it is completely by luck that he can get such a result in the end! ”

"I think it's a coincidence, too! If he had done it again, the result would have been different! ”

"I don't think so! Since Yong'an Hou dared to publish this experiment in "Datang Daily", he must be ready to be questioned! In other words, this experiment can stand up to skepticism! ”

"Anyway, why hasn't Mr. Liu come yet? At this time in the past, his old man should have come a long time ago! ”

"Mr. Liu is here, Mr. Liu is here!"

Just when the students were talking, an old man in coarse cloth and white came in at the door, with his gray hair, which inexplicably looked a little vicissitudes. The old man was followed by three middle-aged scribes, all of whom were deliberately half a step behind the old man as a sign of respect. The church house, which had been noisy just now, suddenly became quiet.

"Huh! The old man just heard you all talking about the needle throwing experiment in the newspaper, and you must all want to know if the result in the newspaper is a coincidence, right? ”

The old man stood on the podium, looked at the students below and smiled.

This old man is Liu Hongyuan, who has reached the age of retirement but was invited back, and he has been in the Guozi Supervision School for more than ten years, in the end, he is still a little reluctant here!

None of the students spoke up, because they had been in Guozijian for so long, and they all knew that most of the teachers in Guozijian didn't like students to talk about things related to Li Zexuan, which was already a tacit fact.

Although they couldn't make a sound, the students' eyes were shining at Liu Hongyuan.

Liu Hongyuan has no prejudice against Li Zexuan, on the contrary, he also bought a copy of Li Zexuan's new-style arithmetic textbook and studied it, and when he saw that the students looked like they wanted to say it but didn't dare to say it, he smiled again:

"Actually, not only do you want to know, but the old man also wants to know if the result obtained by Yong'an Hou is a coincidence. Before the class, the old man prepared a piece of paper with engraved lines and a pack of thin needles, the distance between the engraved lines and the length of the needles were exactly the same as described in the newspaper. So today, let's do a needle throwing experiment in the arithmetic hall to see if the results in this newspaper are a coincidence~! ”

Liu Hongyuan said as he took a gray cloth package from a teaching assistant, which contained a piece of rice paper with lines drawn and a pack of fine needles. The reason why he was late for class today was because he went to prepare these two things!

When the students heard this, they couldn't help but talk about it in private.

"Wow! We're going to do a needle throwing experiment too? Mr. Liu is so open-minded! ”

"Hey! If we can prove that the results in the newspaper are coincidental, wouldn't our arithmetic academy become famous this time? ”

"Haha! In my opinion, it's a coincidence! ”

"Hehe, I don't think so!"

Liu Hongyuan patted the table and signaled the students to be quiet, and then he said: "We have a total of seventy-one students in the arithmetic hall, and the number is still a little small. I'm with three gentlemen to help you count the number of times you press the thread. Yao Yuanhe, come up, start from your side~! ”

With that, Liu Hongyuan spread out the rice paper and instructed a student sitting at the door.

"Yes, Mr. Liu!"

The student answered, and ran up excitedly.

The other three teaching assistants, holding paper and pens, stood behind Liu Hongyuan, ready to take notes.

The verification experiment of the needle throwing experiment was officially launched in the Guozi Supervision School.

The whole experiment lasted for more than half an hour before it was over, because it was a real-time count, the students threw out the fine needle to press the thread once, and the teaching assistants immediately counted once, so not long after the experiment ended, the final results were counted.

Liu Hongyuan took his statistical results and checked them with the three teaching assistants, and after finding that the results were the same, he turned to the students below and said: "We have a total of seventy-one students, each of whom voted ten times, that is to say, you have voted a total of seven hundred and ten times just now, and after my statistics with the three gentlemen, there are a total of two hundred and twenty-six fine needles pressing the middle line~!" ”

As soon as his voice fell, a student below with a slightly better memory immediately exclaimed: "Seven hundred and ten, two hundred and twenty-six, and the results in the newspaper are seven hundred and thirteen, two hundred and twenty-seven!" Our results are so close to those in the newspaper~! ”

"Wow~!"

The full class of students was in an uproar.

The three teaching assistants on the podium were also stunned, because at this time, they also recalled the data in the newspaper.

Liu Hongyuan's face did not change, he turned around, picked up the chalk and played the calculation on the blackboard, the students saw this, quickly stopped talking and quietly watched Liu Hongyuan's calculation.

710/226=3.14159292………

When it was counted to seven decimal places, everyone's faces became exciting, and Liu Hongyuan, who had always been unfazed, was no exception. The old gentleman was trembling with excitement at the moment, and the chalk in his hand fell off and he had a clear sense of taste, so he heard him mutter:

"What a miracle! The old man, the old man actually calculated the sixth place after the decimal point of the ancestral rate... This..."

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