If Lu Sanlang further awakened his talent for arithmetic in Cuiyun, and transformed from a prodigal child to a genius praised by the emperor, then Zhang Chen's years in the mountains were full of poison and unbearable. And when he went to the Jiuzhang Hall to audit a class with the general stream, he was even more sure of such a conclusion.

Count that thing and make a mistake with yourself!

At this moment, when Zhang Chen stepped into the Jiuzhang Hall, he was ready to be sneered at by those low-born prisoners. He heard that Lu Sanlang, the chief of the house, has accepted many challenges openly and secretly since he took office, and finally sat firmly in the position of the chief of the fast, and he, the head of the half-mountain hall, suddenly came over, even if it was Zhang Shou's order, it was strange that people didn't stare at him!

However, when he entered the door, he found that no one looked up at all, let alone noticed him as an uninvited guest. Everyone is writing without distraction, some are fiddling with the abacus, some are pinching their fingers, and some are reciting words...... That quiet scene came into view, compared to the noisy and lazy crowd at the end of class in the middle of the mountain hall in the past, he couldn't help but feel a little dazzling.

He subconsciously cleared his throat, but even so, no one looked up at him. Ignored, he finally couldn't bear it, and moved to sit next to a certain prisoner in the first row, intending to see what was written, but when he found that there were symbols on the paper that he didn't understand, and a long list of numbers, his scalp was numb.

This is true of the first person, the second, the third, and the fourth...... There were more than 20 people around the huge room, Zhang Chen was stunned and didn't understand what method these people were using to crack the fourteen-ring text lock, but his head hurt a little. He couldn't help but rub his temples gently, and his mood was a little indescribably complicated.

He is not interested in the Four Books and Five Classics, he doesn't seem to be good at arithmetic, he can't compare with his strategist grandfather, and he can't compare with his father who is obsessed with reading, is he going to be a Qin Guogong who eats and waits for death in the future? At this moment, he suddenly remembered that Zhang Shou had said in front of the traitor Ding Hai that he had an excessive sense of justice, and just now said that he had the potential to be a leader, and he couldn't help blushing a little

Since he found that he had nothing to do, Zhang Chen, who was bored, simply found an empty seat behind him and sat down, and his eyes swept over the shabby-clothed prisoners in front of him one by one. Of course, there are also talented people among the children of famous families, and these people have either passed Enyin or entered the imperial examination, and now many of them have gained a firm foothold in the court, among them, the children of official eunuchs are much stronger than the children of Xungui.

For example, Lu Sanlang's two elder brothers, regardless of their character, they are very good at reading, one is thirty years old, and the other is said to be a big hit in next year's township exam...... In contrast, as long as they are outstanding, the children of famous families do have a lot of opportunities, and the children of poor families can still go to the field if they are outstanding in literature, but if they are only proficient in arithmetic......

This place in Jiuzhangtang may be the last hope for these people, right?

In the midst of his thoughts, Zhang Chen suddenly heard a shout of surprise: "The first three words of this sentence actually match the thirty-fourth group of numbers in the sixty-four groups!" ”

In an instant, he saw a group of people who had just been struggling to raise their heads. And he unconsciously looked at the place where the voice came from, and saw that it was a middle-aged prisoner who was shouting, looking at the vicissitudes of life on his face, he couldn't even tell the age of this person at a glance!

It is said that the age of thirty is also successful, and the age of forty is also successful...... Fifty or sixty can even be believed!

Zhang Chen didn't know the specific algorithm, but he knew that with Zhang Shou's temper, unless it was an exam in the middle of the mountain, he wouldn't easily interrupt a class to check here. Therefore, after the initial surprise, after being cultivated in the Cuiyun room for a while, he immediately said decisively: "Give the sentence you think matches to someone else, and calculate it a priori!" ”

He was not the chief of Jiuzhangtang, originally there was not much power in saying this, but what made him stunned was that no one questioned his incompetence at this moment, and the middle-aged prisoner who spoke only hesitated for a moment, then sat down and wrote a note, and then this note was circulated among more than 20 people, and then the room was quiet again.

Unsure whether he should stay here or go to the Mid-Levels Hall to report to Zhang Shou, Zhang Chen hesitated, but finally did not move. I don't know how long it took, he heard a voice: "It's been checked, this sentence can indeed match!" ”

"The calculation is correct!"

"The calculation is correct!"

One voice after another sounded, Zhang Chen was a fool, and he knew that he was afraid that there was really a result. He is not Qi Liang and Lu Sanlang, and he doesn't know the specific algorithm, but he still knows what is going on with the fourteen-ring text lock, so after a moment of silence, he said bluntly: "Since you have found that poem, then, deduce the past according to this?" ”

As soon as these words came out, Yan Fang, who was surprised at the beginning, couldn't help but glance at Zhang Chen again. Unlike those classmates who at least tried to make friends with other prison students and planned to expand their connections, he was really blinded, and no one knew anyone outside of Jiuzhang Hall, so he didn't know who Zhang Chen was.

But at this time, he agreed: "Then let's reverse it, everyone should have deduced the function, so that the deduction of the remaining four words is as easy as a snap!" ”

Thinking that he was still talking to Zhang Wu and Zhang Lu before, the fourteen-ring text lock could not be easily opened, Zhang Chen couldn't help but feel a little weak. But then, he suddenly thought of a key point, and couldn't help but widen his eyes and ask, "Why can you only push back four words?" ”

"This sentence is a seven-word poem, and the next sentence is not written in a thousand-character text, so only seven words can be introduced."

Zhang Chen knew that he had made a joke, so he quickly nodded and said, "Okay, let's deduce it according to this seven-word poem first." ”

When he saw that the others looked at each other in pairs, and there was no sneer or objection, and they really began to deduce it according to their instructions, he hesitated for a moment, but still did not leave.

He wanted to see if the arithmetic was really that powerful, and if these people were really so good that they could easily unlock the fourteen-ring text locks that everyone else was helpless with...... But listening to what I just said, maybe I can only launch the text of the first seven rings?

Zhang Chen didn't wait too long, he didn't even feel that time had passed, so he only listened to the middle-aged prisoner who was the first to speak in the corner, and then echoed his decision, hurriedly got up, and then solemnly handed him the piece of paper in his hand. And after such an opening, one after another, people got up and came to him and handed over the pieces of paper full of words.

He couldn't understand the equations on each piece of paper, but he couldn't understand the first sentence anyway.

That is the famous sentence of Li Bai's "Shang Li Yong" - Xuan's father can still be afraid of the future generations. Of course, the latter sentence is not young and more famous, but it is not on paper.

Zhang Chen didn't have time to think too much, and said bluntly: "You wait for the time being, I'll go and tell the teacher!" ”

As soon as he left, there was some commotion in the quiet Jiuzhang Hall just now. And Yan Fang, who was relieved, rubbed his somewhat sore head, and suddenly said out loud: "He won't take something to pretend to be his own credit, right?" ”

As soon as the words fell, a sneer came from the side: "Brother Yan, it's a good thing that you didn't say this in front of people, otherwise you would have been drowned by this prince of the Qin State who spit on Xingzi!" That's the head of Banshan Hall, a famous top noble son in the capital, and the most unruly person in the past! That is, our teacher can suppress him, but no one can change him, such a nobleman, will he covet this credit? ”

Yan Fang saw that some of the other people around him were smiling kindly, some pouted sneeringly, and some were glad that he didn't say it just now, he was the luckiest before, and he happened to get this poem, so he who took the lead in facing the number suddenly turned red, and it was difficult to speak.

I think it was because of his fast but suspicious temper that I didn't know how many people I offended when I was in the bookkeeper......

But Zhang Chen didn't know that he was actually thought to be robbing of credit. He trotted all the way to the mid-mountain hall, and saw that Zhang Shou happened to be instructing a group of students to do triboelectric experiments, the third prince and the fourth prince were having a lot of fun, and Zhang Shou smiled and stood by, just idle, so he hurriedly walked around from the side.

When he arrived at Zhang Shou's side, he found that the person happened to be aware and turned his head to look at him.

"Teacher, they say this sentence can match ......"

Without waiting for Zhang Chen to finish explaining, Zhang Shou waved his hand to signal someone to stop, took the note and swept it at a glance, but he didn't just notice that Xuan's father could still be afraid of the future like Zhang Chen, but saw the nonlinear quadratic function at the back.

f(x)=x^2+3x+3

The original plaintext is that Xuanfu can still fear the afterlife, and the corresponding numbers are 601,242,349,174,788,866,42.

The post-displacement intervals are 7, 13, 21, 31, 43, 57, 73. The corresponding first seven characters are Qing, Du, Ci, Ke, Wei, Lun, and Li.

The fifty-six characters of the fourteen rings of the text lock, he had long remembered clearly. At this time, just by looking at it, he knew that these seven words were indeed words on the text turntable from one to seven rings.

Therefore, squinting his eyes slightly, he took out another piece of paper from his sleeve and handed it to Zhang Chen: "You go to Jiuzhangtang, use a brush dipped in water to write these sixty-four sets of numbers in the format I gave you, and let them try to push the second half of the sentence according to the same method." ”

When Zhang Chen was stunned and immediately ran out, Zhang Shou glanced at everyone in the Banshan Hall, and saw that except for the third prince and the fourth prince, who were young and ignorant, most of them looked at him, but he deliberately didn't say a word about it.

If you can solve fourteen words, then it is a success, otherwise it is also on paper.

Having said that, hearing that the "subject" on the side of Jiuzhangtang had actually made progress, no one of the more than 100 children of Guijie was surprised. And unlike the previous legend that Zhang Shou personally unraveled the so-called secret letter in the Shuntian Mansion, this time Zhang Shou did not go into battle in person, but only relied on a group of rookie prisoners who had just been admitted to the Jiuzhang Hall not long ago!