When Bai Qing heard "binary encoding and decoding", she didn't react at all. On the contrary, the title "girl" seemed to irritate her.
She stamped her feet angrily and argued, "I told you I have a name!"
"Okay, okay, Ah Qing, are you satisfied?" Lin Xixue smiled helplessly, wondering why Bai Qing's focus was always so strange.
"Well, what are these two things that weave horses into?"
"Well", Lin Xixue made a fist with one hand and put it gently under her nose, thinking about how to explain this problem to Bai Qing.
She moved her little finger first slightly, then moved it suddenly, and then asked, "Can you feel the difference between these two movements of your finger?"
Bai Qing blinked, as if he didn't understand her intention, and said in confusion: "Isn't it just light and short once, long and heavy again? Is there anything special about this?"
"That's right! If we didn't agree on anything in advance, these are just two ordinary feelings."
"But if we agree in advance that a short finger movement means 'yes', and a long and heavy finger movement means 'no', wouldn't we be able to complete a message transmission?"
"Yes!" Bai Qing suddenly understood at first, but then became a little disappointed, "But the information conveyed in this way is too limited and impractical."
"Yes, now we can only pass 'yes' and 'no' status, but what if we extend the bytes?"
"Self-torture? What is this?"
"Byte. You will understand when I say this. For example, we used short to mean yes and long to mean no. They all use one finger movement to express one meaning."
"But if we use two finger movements to express one meaning, for example, short means 'yes', long means 'no', long short means 'you', and short long means 'I', can we now express four kinds of meanings?" Do you understand?"
Bai Qing lowered her head and pondered for a moment, and then said in shock: "Then if we continue to lengthen the 'self-tribulation', wouldn't we be able to express more meanings?"
"Of course, if we extend the number of bytes to eight bits, we can express 256 different meanings, and if we extend the byte number to ten bits, we can express more than a thousand different meanings."
Lin Xixue nodded, very satisfied with Bai Qing's understanding.
"In other words, as long as we agree on the meaning of 'self-tribulation' in advance, we can rely on this wire to transmit sounds regardless of distance!"
Bai Qing was filled with surprises, stepped forward to hold her hand, and said excitedly: "Xiaoxue, you are simply a genius!"
"Ahem, it's okay."
Lin Xixue looked away from Bai Qing with some embarrassment, thinking that this was not her wisdom. The knowledge from her previous life was like a dimensionality reduction blow to this world.
"Oh, by the way, is there only one pulling thread?" Bai Qing suddenly asked this question for no reason.
"There are two more," Lin Xixue took out the remaining two traction wires, "What's wrong?"
Bai Qing grabbed the traction wire and said, "How about I keep this thing for now?"
"Ah this." Lin Xixue didn't expect Bai Qing to behave like this for a moment and couldn't help but be speechless.
Bai Qing wrinkled her nose and said dissatisfied: "What? Could it be that you have another use for the machine wire? Do you want to communicate with other people?"
"Hey, isn't there Zhiyi? We can't just communicate with each other."
"Oh? I think the name you called Zhiyi is quite affectionate. Calling me my name is like killing you." Bai Qing stepped forward, her dissatisfaction deepened.
Before Lin Xixue could respond, Bai Qing snorted and tied a piece of tether silk between her and Xu Zhiyi's fingers.
"Okay, this way, if you want to communicate with Zhiyi in the future, I can help you convey it, and you can also save a piece of string."
"No, no, no, it's easy to have a man-in-the-middle attack and a single point of failure!" Lin Xixue waved her hands in denial.
"What does this mean?"
"The so-called man-in-the-middle attack means...for example, if you are accidentally caught by the enemy, then all the information exchange between Xu Zhiyi and I depends on you. Can the enemy directly grasp all the contents of our transmissions?"
"There are also single points of failure. For example, if you are in danger, Zhiyi and I need to discuss a plan to rescue you, but you cannot convey it on your behalf, and the information channel is cut off. This creates a single point of failure."
"So! The safest solution is undoubtedly for the three of us to use traction wires to connect each other to achieve point-to-point transmission!" Lin Xixue explained seriously.
"Well, it makes sense. Reach out!" Bai Qing reluctantly wrapped the last piece of tether around the hands of Lin Xixue and Xu Zhiyi.
However, it was not enough to pull the machine wire, and a code book was also needed. However, due to time constraints, Lin Xixue had to temporarily write out a simple octet code.
Although it can only express 256 words, it is more than enough to simply convey information.
Lin Xixue handed the codebook to Bai Qing and told her to write it down and then burn it, otherwise if the codebook falls into the hands of the enemy, it can be used to interpret the information passed between them.
After finishing all these matters, Lin Xixue talked to Bai Qing about the most important things at the moment.
"In the past few days while I was waiting for you to meet me in the city, I already mentioned going to the Sanyuan Temple to visit. I will prepare to visit the temple early tomorrow morning."
"Okay, I'll go with you." Bai Qing responded without any hesitation.
"No, there is another very important thing that you may need to keep an eye on." Lin Xixue shook her head, "Hong Yanzi's lair is called Jieshi Cave. Although Hong Yanzi is dead now, there is a corpse in the cave. The mother puppet is entrenched.”
"This insect mother is constantly producing new zombie worm larvae. Although I have wiped out all these zombie worms a few days ago, I am afraid that trouble will reappear soon, so you may have to take precautions."
Bai Qing nodded, agreed, and warned: "Then you must be more careful when you go to Sanyuan Temple alone."
Lin Xixue took out the Sanqing Mask and said: "Don't worry, I have already thought of a specific plan for the investigation. This trip will mainly be conducted in secret, and I will try not to disturb these bulls and avoid conflicts."
After saying that, she warned Bai Qing in turn.
"You too, just stay close to Linghu Village and don't go deep. After Zhiyi wakes up, we will go in together to solve the problem of this insect mother. I have already learned the weakness of this insect mother."
"If anything happens, please contact me via message!"
"Okay, let's contact you via voice transmission."
"Oh, by the way, there is a question I almost forgot to ask. Why did you return to Xinliang City so fast?" Bai Qing asked what he was confused about from the beginning.
"It's a long story."
"You don't have to go to Sanyuan Temple tomorrow morning to explore. It's a long night, so you can have a long conversation."
"It has something to do with evil spirits, so it's better not to tell you."
"Okay." Although Bai Qing agreed, she muttered something in her mouth and didn't know what she said. Then she added: "Be careful, I'm still waiting for you to fulfill your promise."
"good."
The two of them smiled at each other in tacit understanding and crossed their fingers.
Without further chatting, Lin Xixue went to take a shower and change clothes. After all, she had lived on the mountain wall for five days and her body was already covered in dust.
She changed her clothes, took the Strengthening Pill, calmed her mind, looked at the faint morning light on the horizon, took out the Sanqing Mask and covered her face.
Hey, two chapters in a row, there are three more chapters tonight!
