Good things don't go out, but bad things spread thousands of miles. But on the one-third of an acre of land in Guozijian, Dr. Zhang Shou, who was in charge of Jiuzhangtang and Banshan Hall because of the emperor's golden words, was awarded the title of the six-grade Hanlin attendant because of his meritorious work in capturing thieves and decryption, and he was also the Zuo Zanshan of Zhan Shifu, and he was still appointed as Dr. Guozi, which can be said to have stirred up a thousand waves with one stone and caused an uproar.

Especially Xie Wanquan, the former fasting chief who has only returned to the Frank Hall in a low-key manner in the past few days, is even more ashamed and angry, but he can't use the trick of being sick to hide from things. Just because of his previous "recuperation", the fasting chief has already belonged to someone else. It was not Dr. Yang Yiming, who was not in charge of the Frank Hall, who did not help him, it was the instruction of Zhou Xun of the Guozi Festival.

He has already suffered a big loss in front of Zhang Shou in Rongshui Village because he was provoked, and now Zhang Shou is not only Ge Yong's closed disciple, but also a figure at the level of the teacher, he doesn't know what the result of the game at the top is, how dare he come nonsense?

And the most ecstatic, of course, were the prisoners of the Jiuzhang Hall. Most of them came from poor families, and they were still a little unconfident about their prison names, but now their teacher Zhang Shou was suddenly promoted to the sixth grade, and everyone was a little more confident in their future and future.

At this time, it was the noon time of the lunch break in the various halls of the Guozijian, and even though the boring repetitive work of the morning had made most people dizzy, everyone was very serious. Even Lu Sanlang didn't expect that just the news of Zhang Shou's promotion would allow more than 20 people to hurry over and continue this task after having a simple lunch.

At this moment, he stood on the podium with his hands crossed, and for the first time felt that it was not necessarily bad to be classmates with these people who he felt at first were not as receptive as himself. Because like him, who has been accustomed to seeing his father coldly since he was a child, each of them has a very clear purpose and is unwilling to give up the slightest opportunity.

Therefore, when Zhang Shou appeared at the door of Jiuzhang Hall, he glanced at Qi Liang, who was also concentrating on accounting, and hurriedly stepped forward, and then said in a low voice: "Look at this progress, maybe when they give a lecture in the afternoon, they will be able to get some results." I transferred more than 20 copies of the thousand-word text, and they first marked the numbers on each word, and then checked them one by one, which was much faster. ”

Zhang Shou nodded with satisfaction, and then instructed Lu Saburo to collect the corresponding numbers of the poems that had been sorted out, and then copied the first three numbers of each poem on a piece of paper. Then he took out another piece of paper, on which were sixty-four combinations of the numbers corresponding to the twelve characters of the first three rings that had been cut out of the fourteen rings.

As Lu Sanlang said, by the time the Jiuzhangtang class was held in the afternoon, all the poems assigned to more than 20 people had been sorted out, and Zhang Shou had a thick stack of paper in his hand. He flipped through it casually, then raised his head and glanced at everyone.

"Everyone should know the news of my promotion, although this seems to be a bit of a boast from my own mouth, but I do have some small credit these days. One of them is the secret letter that opened the traitor's exchange. That's why I'm now receiving the current task, cracking a fourteen-ring text lock. ”

During the renovation of the Jiuzhang Hall, Zhang Shou specially ordered a powder wall to be left behind the podium, and at this time, he casually used a brush dipped in water to write sixty-four groups of three numbers on the powder wall. When he turned around, he saw that everyone was writing hard, and it was clear that they had already understood that they should copy the numbers without his command.

He watched the water traces on the wall gradually disappear, and then said with a smile: "I think that at the beginning, when I was teaching Qi Liang and another student in the countryside, I used this method, the reason is very simple, it saves trouble, saves money, and can be used repeatedly, but I didn't expect that now when I go to Guozijian, I still use this method." Okay, have you all copied it down? ”

Seeing that no one said that he hadn't finished copying, Zhang Shou was naturally satisfied, and then said lightly: "And to complete this task, I need to teach you another course in advance, that is, functions." ”

It would be a fantasy to explain the functions in the afternoon, but because what is involved today is only the simplest linear function related to the unary equation, is still within the acceptable range for most inmates. Even so, when Zhang Shou drew a planar Cartesian coordinate system with only the first quadrant, most people presented a dumb word with a capital letter.

Even with the illustration tape as an example, Zhang Shou condensed the course that would take at least a few days or even a dozen days into one afternoon and forcibly poured it into it, and then changed the conversation and talked about the sixty-four sets of numbers that had just been copied.

"If all the 14 rings and 56 words need to be verified one by one, there are too many combinations, so we only need to take a total of 12 words from the first three rings to verify, so that we only need to verify 64 groups.

For the verses that were assigned to you before, you also took the numbers represented by the first three words for checking, and saw if there was a corresponding linear relationship with these sixty-four groups of numbers after the regular shift......"

Zhang Shouyan concisely explained the corresponding principle of the shift password, and then asked questions one by one, and after identifying a few people who understood other than Lu Sanlang and Qi Liang, he simply let the people who understood teach confused people. When the sun set, most of the twenty-odd people finally understood, and he breathed a sigh of relief.

"Now that you understand, then, when you go back tonight, you can start the calculation, and tomorrow morning you will also check the calculation."

When the class ended, Lu Sanlang saw Zhang Shou walking out, and hurriedly rushed up with the rare agility of his fat body, and when he turned around, he saw Qi Liang surrounded by people, obviously some people just claimed to understand, but in fact, they didn't understand at all. He quickly caught up with Zhang Shou, and then asked in a low voice, "Mr. Xiao, what if the password map has nothing to do with linear functions?" ”

"Then use the function twice to continue the attempt, anyway, the shift interval is from a nominal increment like 3,5,7,9 to a variable increment like 2,5,10,17. At the beginning, we didn't have enough time in the Shuntian Mansion, and we didn't have that manpower, just a simple function, and it was considered lucky, but now we have enough manpower, count a few days and ten days, at least a certain probability to calculate. ”

But speaking of this, Zhang Shou saw Lu Sanlang nodding his head like a chicken pecking rice, but he shrugged his shoulders and said: "Of course, if the password designed by Emperor Taizu back then was not a poem or a regular shift, but a dozen numbers were randomly selected as the shift increment, then we would be busy in vain." ”

Seeing that Lu Saburo was dumbfounded, he smiled and said: "Originally, cryptography is the most difficult thing for these days, not to mention Chinese character passwords." As I said a long time ago, dead horses are treated as live horse doctors, and this is also a good exercise for them. ”

"But if you toss it so loudly, it will not come to fruition in the end...... Wouldn't that be humiliating? Lu Sanlang said his worries in a hurry, and then he was afraid that Zhang Shou would think that he underestimated him, so he hurriedly added, "I'm not a crow's mouth, but since you also said that there is such a possibility, Mr. Xiao......"

"If I fail, that's my responsibility." Zhang Shou smiled and patted Lu Sanlang's shoulder, but thought in his heart that if he could succeed, the prisoners of Jiuzhangtang would naturally be full of confidence in the future, but if they failed, then it would just be too profound in mathematics, and he was not experienced enough, anyway, it would be enough for him to come forward and carry it.

In this way, after he unlocked the secret letter, the attention that gathered on him was a little less.

Anyway, he figured it out when he assigned the task, it doesn't matter if it is success or failure, it is not a matter of life and death!

It seems to be a prophecy, and the next day it was calculated for a whole day, a bunch of manuscript paper was used, and hundreds of poems were finally calculated, but it was completely empty, and it didn't match it at all. However, what Lu Saburo and Qi Liang didn't expect was that Zhang Shou not only did not get discouraged, but really didn't say a word, and ordered to try the quadratic function.

Of course, Zhang Shou talked all afternoon with a dry mouth, and this time the coordinate system was completely useless, but the ternary equation could be used......

On the second night, when the rest of Jiuzhangtang was tossing and turning and couldn't sleep, Zhang Shou had a good night's sleep. However, after the first class on the morning of the third day, before he had time to go to Jiuzhang Hall to take a walk around to see how the progress of tackling key problems was, he saw Qi Liang appear at the door of the Banshan Hall, his face full of anxiety.

Somewhat strange, he went out immediately, and was about to ask what was going on, Qi Liang said angrily: "Lu Sanlang's family sent someone to say that his mother suddenly fell ill and called him back in a blazing manner. ”

Zhang Shou was quite impressed by Lu Sanlang's mother, and remembered that unlike Lu Sanlang's father Lu Juan, she was a good mother who loved her young son wholeheartedly. Therefore, after he pondered for a while, he immediately said in a deep voice: "You go to the Lu Mansion in my name, first, to visit Mrs. Lu, and secondly, to give a message to Lu Sanlang on my behalf, don't worry about other things, it is important to serve his mother well first!" ”

Seeing that Zhang Shou was calm and relaxed, Qi Liang's original heart fell back to the same place all of a sudden. He nodded hurriedly.

"After you leave the Guozijian, try to call Ah Liu, if he is there, let him accompany you, buy some suitable gifts for visiting the patient, don't go empty-handed......"

After carefully instructing Qi Liang, and when the people left quickly, Zhang Shouhui turned around and took a look in the mid-mountain hall, and suddenly shouted: "Zhang Chen, come here!" ”

Although the prisoners did not deliberately publicize the topic that was being developed in the Nine Chapters Hall, because Zhang Shou did not tell them to keep it secret, the other prisoners also heard the news. At this moment, Zhang Chen was whispering to Zhang Wu and Zhang Lu about whether it was possible to unlock the fourteen-ring text lock in the Nine Chapters Hall. Zhang Wu swore that there would be no problem, Zhang Lu felt mysterious, but Zhang Chen laughed.

"If you want me to say, this time our little gentleman is overconfident. He went to school in person, relying on those Jiuzhang Hall supervisors who hadn't studied for a few days...... Hehe, I think it's nice if these guys don't help! ”

As soon as the words fell, Zhang Chen heard Zhang Shou's voice calling himself, and suddenly thought that he had been caught talking badly behind his back, and the whole person was a little embarrassed. It wasn't until Zhang Shou called for the second time that he hurriedly stood up and rushed over, and when he got closer, he immediately said a little unnaturally: "Are we just talking and playing?" ”

I don't care what you say!

Zhang Shou glanced at Zhang Chen a little inexplicably, and then said angrily: "Lu Sanlang's family has something urgent to go back, I'm afraid I won't be able to come back today." But over there in Jiuzhangtang, it's okay or not, it's estimated that there will be preliminary results this morning, you go to Jiuzhangtang to help me watch a class, the missing part here, I'll make up for it for you later. ”

Zhang Chen nodded his nose directly in surprise: "Me? ”

Even if I went, I wouldn't understand!

"That's right, it's you. You just go and see if they're done, whether they're successful or not, and I don't need you to check it! Give full play to your potential as a leader and be a substitute leader, understand? ”

Seeing that Zhang Chen nodded in a daze, and then went to Jiuzhangtang in confusion, Zhang Shou smiled.

Zhang Chen, who was born with a golden spoon in his mouth and has always been blessed, it's time to take a look at those who work hard!