Mo Yuan felt that the red-eared turtle seemed to be full, so he packed up the turtle food package, washed his hands, and prepared to find some snacks to eat, "Feed it, but let yourself be hungry", he said to himself, "I ate a few pieces of Saqima last time, I remember that the rest was put in the coffee table, why is it gone?"

Just as I was thinking about it, a new message sounded from the computer. Mo Yuan, turn on the monitor. "I was joking with you, Mr. 302, how could I terminate the commission?"

"Well, okay, let's continue with the previous commission", Mo Yuan calmly tapped on the keyboard. Suddenly, a warning window appears, "Being tracked, 12 more nodes have arrived...... There are 11 more nodes to reach ......"

"Mr. 302, then I'll wait for your good news!"

At the same time, warning messages indicate that the tracking is getting closer.

"Okay", Mo Yuan replied to the client, while analyzing the current situation, at this time, the keyboard suddenly smoked, and a strong smell of burnt plastic diffused, "X, didn't you say that the all-metal keyboard was mixed with plastic, it shouldn't be such a strong smell of plastic", Mo Yuan couldn't enter instructions through the keyboard, "There are still 3 nodes to reach", and the warning message is not waiting for anyone.

Mo Yuan immediately unplugged the computer, but the monitor still continued to display the warning message "There are still 2 nodes to arrive", Mo Yuan didn't have time to think about it, and quickly unplugged the network cable, but the warning message did not stop, "There is still 1 node ......"

This unstoppable tracking, approaching Mo Yuan step by step, he didn't have time to think about the reason for all this unreasonable phenomenon in front of him, his intuition told him, "Run!"

At this moment, he suddenly felt that his calves were very heavy, he couldn't take a step, his waist was very weak, and his upper body couldn't stand upright, "What's wrong?" In the face of this sudden everything, he felt helpless, the kind of despair he had before.

"Knock knock", a quick knock on the door came, and Mo Yuan suddenly had the idea of giving up at that moment, "Are you looking for me?" Okay, you finally found me. ”

Mo Yuan's eyes widened, waiting for everything that was coming......

"Dididi", Mo Yuan opened his eyes, "Dididi", is the sound of the alarm clock.

"Dream?" Mo Yuan woke up a lot, and the sweat on his body convinced him that he had indeed had a dream, "Whew, it's still a nightmare." ”

Mo Yuan, while eating the two breads left over from last night, turned on the monitor and checked if there was any message. Of course, there was no message, which made Mo Yuan feel a little disappointed, inexplicably disappointed.

"Teaching went, see you later. The red-eared turtle looked up at the water, puffed out its neck, and looked at the door he had closed, as if it were as stunned as ever.

In the evening, Mo Yuan turned on his computer a little earlier than usual, waiting for a new client to appear.

"302, is it there?" a new client appeared.

"Well, tell me about your commission. ”

"I'm going to hack my dad's computer. ”

"What system?"

“utnubu12。 ”

"Well, work or home?"

"Home, I have an account, but I don't have enough permissions, I can't see what I want to see, I want to get root access, but I've tried with tools or methods found on the Internet, and it doesn't work. ”

"Well, let me state first, my commission fee is not low, and based on my experience, I feel that you are a student. ”

"I have money, and if I ask, my dad will give it to me, and I don't ask what I want it for. ”

"Okay, let's talk about the purpose of this computer, the general home is swodniw and cam system, and there are still not many xunil. ”

"I saw that my dad used this computer to open things like ledgers and stuff, and he would store scans and stuff in them. I told my dad that I wanted to learn the xunil system, and he opened an account for me, and I thought I would be able to see my dad's stuff, but I didn't expect the system to be so difficult to use, so I could only hang around in my home folder. ”

"Well, your father has made the necessary permission settings, which is normal, after all, it seems that there is important information in place. It seems that this computer has no use for you, if you can't see what you want to see. ”

"No, my dad has a game simulator in it, it seems to be a simulation of the NES, and he plays some old-fashioned games, and sometimes, we play together. It's just that he has very little time. ”

"Well,I'll pass a game rom to you.,Find a way to find your dad to play with.,When you clear the level,The root user's password will appear in the non-stop rolling closingcredits.,Of course, some encryption is done.,In case your dad sees the clue all at once.,I'll tell you the decryption method.。 ”

"Is it okay to play a game?"

"Cleared customs. ”

"Really, why do you want to beat the game? Can't you set it up to get the root password at the beginning of the game? ”

"Wouldn't it be nice to play more games with your father?"

"I'm not a child. ”

"Download a tool, browse the dark web to find information, and then you are no longer a child?"

"Well, is the decryption method complicated?"

"It's not complicated, it's similar to 'A to C, B to D' or something, the purpose is just to not let people see the plaintext at a glance, and I'll pass it on to you with the ROM. ”

"What if my dad and I can't beat this game?"

"Keep playing until you complete the level. ”

"What should I do if the list of credits scrolls too fast and I can't see it?"

"Play again. ”

"Can you tell me how that's working?"

"Obviously not. ”

"Okay. ”

"Well, the fees associated with the commission are transferred to the bank account I specified. I will pass on the relevant documents to you when I receive it. ”

"Okay. ”

"Well, that's all for today's conversation. ”

Mo Yuan turned off the monitor, he didn't know what the kid wanted to find from his father's computer, but he had at least arranged a game, a game that was rare for the family to play together.

The hour hand moved slowly between 1 and 2, everything was calm, the red-eared turtle buried itself under the water, motionless, Mo Yuan remembered the previous dream, as if he heard the sound of new information coming from the computer, turned on the monitor, the screen was quietly lit, like a lake without ripples, and there was no news.

"Sleep, sleep. Mo Yuan walked to the bedroom, leaving the monitor unturned off, faintly illuminating his back.

------------------------------------------------------------------------------------

A few days later.

Two teachers were chatting in the office.

"Did you listen to the news in the morning, the deputy mayor was investigated on suspicion of serious disciplinary violations, and the whistleblower was his son. ”

"Listen, do you know who his son is?"

"I know, it's the first year of high school, it seems to be the third class. The grades are not bad, but I don't know what will happen when I encounter something like this. ”

"Will you leave this school and go to live in another city like in the TV series? ”

"Hey, Mo Yuan, it seems that you will teach the third class in the next class. ”

"Hmm. Mo Yuan got up as he answered, ready to go to the classroom.

"Help us see that student. Maybe I'm out of class anymore. ”

Mo Yuan didn't pay attention to it, slowly walked out of the office, and closed the door.

"Students, today, we are studying section 1.2, the coding of information, who can give an example of information encoding. ”

"Does the Chinese character input method I usually use count?" asked one student.

"For example, it converts Chinese characters into a series of characters that can be typed by a keyboard, which is a kind of encoding. ”

"Xinhua dictionary, does Xinhua dictionary count?" another student asked.

"Calculation, which can be understood as, encodes a Chinese character into the number of pages, lines, and numbers, which is a kind of information encoding and a kind of index. ”

"All letters are replaced by the third letter, right?"

"Computing is a kind of information encoding, and it is a kind of information encoding for the purpose of hiding real information, which can be understood as encryption. Mo Yuan looked at the student who asked the question, and there was nothing on his young and calm face except tiredness.