Hearing "binary encoding and decoding", Bai Qing didn't react, but the title of "girl" seemed to anger her.

She stamped her foot in a huff and argued, "I said I had a name!" ”

"Okay, Aqing, satisfied!" Lin Xixue smiled helplessly, thinking to herself why Bai Qing's focus was always so strange.

"Well, what are these two horses?"

"Hmm", Lin Xixue clenched her fist with one hand and gently pressed it under her nose, thinking about how to explain this problem to Bai Qing.

She moved her little finger slightly, then violently, and then asked, "Can you feel the difference between these two finger movements?" ”

Bai Qing blinked, didn't seem to understand her intentions, and said confusedly: "Isn't it just light and short, long and heavy, isn't there anything special about this?" ”

"That's right! If we hadn't agreed on anything beforehand, it would have been a normal feeling for two times. ”

"But if we agree in advance that the short finger movement means 'yes' and the long, heavy moving finger means 'no', wouldn't we be able to complete a message delivery?"

"That's right!" Bai Qing suddenly realized at first, but then she was a little lost, "But the information conveyed in this way is too limited and not practical." ”

"Yes, right now we can only pass 'yes' and 'no' states, but what if we extend the bytes?"

"Self-robbery? What is this again? ”

"Bytes. You will understand when I say this, for example, we used short to indicate yes and long to indicate no, both of which used a finger movement to express a meaning. ”

"But if we use two finger movements to express one meaning, such as short for 'yes', long for 'no', long for 'you', short for 'I', can we now express four meanings?"

Bai Qing first lowered her head and pondered for a moment, and then exclaimed: "Then if we continue to lengthen the 'self-robbery', wouldn't we be able to express more meanings?" ”

"But also, if we extend the number of bytes to eight bits, we can express two hundred and fifty-six meanings, and ten digits can express more than a thousand different meanings."

Lin Xixue nodded, very satisfied with Bai Qing's comprehension ability.

"In other words, as long as we agree in advance on the meaning of this 'self-robbery', we can use this wire to transmit sound regardless of distance!"

Bai Qing was pleasantly surprised, stepped forward to hold her hand, and said excitedly: "Xiaoxue, you are simply a genius!" ”

"Ahem, it's okay."

Lin Xixue staggered Bai Qing's eyes a little embarrassed, thinking that this was not her wisdom, and the knowledge of her previous life was simply a dimensionality reduction blow to this world.

"Oh yes, is there only one wire for this one?" Bai Qing suddenly asked such a question for no reason.

"There are two more," Lin Xixue took out the remaining two wires, "What's wrong?" ”

Bai Qing snatched the wire and said, "Why don't I keep this thing first!" ”

"Ahh Lin Xixue didn't expect Bai Qing to behave like this for a while, and couldn't help but be dumbfounded.

Bai Qing wrinkled her nose and said dissatisfiedly: "What? Could it be that you have other uses for this thread? Do you want to communicate with other people? ”

"Hey, isn't there still Zhiyi, you can't just pass on the sound of the two of us."

"Oh? I think your name Zhiyi is intimate, and calling me by my name is like asking for your life. Bai Qing stepped forward, and her dissatisfaction was even stronger.

Before Lin Xixue could respond, Bai Qing snorted lightly, and tied a thread between her and Xu Zhiyi's fingers.

"Okay, so that if you want to communicate with Zhiyi in the future, I can help you convey it, and you can also save a thread."

"No, no, no, no, it's easy to have a man-in-the-middle attack, and it's easy to have a single point of failure!" Lin Xixue waved her hand again and again in denial.

"What does that mean?"

"The so-called man-in-the-middle attack, that is. For example, if you are accidentally caught by the enemy, then the exchange of information between me and Xu Zhiyi depends on you to convey it, and the enemy can directly grasp all the content of our transmission? ”

"There is also a single point of failure, for example, if you are in danger, Zhiyi and I want to discuss a plan to rescue you, but you can't convey it on your behalf, and the information channel will be broken, which will cause a single point of failure."

"So! The safest solution is undoubtedly the three of us are connected with a wire to achieve point-to-point transmission! Lin Xixue explained seriously.

"Well, it makes sense, reach out!" Bai Qing reluctantly wrapped the last thread around Lin Xixue and Xu Zhiyi's hands.

However, it is not enough to have a wire, a codebook is also needed, but now that time is in a hurry, Lin Xixue has to temporarily write out the abbreviated code of the octet.

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 instructed her to burn it after writing it down, otherwise if the codebook fell into the hands of the enemy, she would be able to interpret the information passed between them.

After dealing with all these things, Lin Xixue talked to Bai Qing about the most important things at the moment.

"I've been waiting for you in the city for a few days, and I've already mentioned going to Sanyuan Temple to step on it, and I'll be ready to enter the temple early tomorrow morning."

"Okay, I'll go with you." Bai Qing responded without any hesitation.

"No, there's another important thing that you might need to keep an eye on." Lin Xixue shook her head, "Hong Yanzi's nest is called Jieshi Cave, and now although Hong Yanzi is dead, there is a corpse puppet mother entrenched in the cave. ”

"This mother worm is constantly producing new corpse golem larvae, although I have swept away all these corpse puppet worms a few days ago, but I am afraid that it will not be long before there will be another disaster, so you may have to guard against it."

Bai Qing nodded, responded, and advised: "Then you go to the Sanyuan Temple alone, be careful." ”

Lin Xixue took out the mask of three emotions and said: "Don't worry, I have already thought of a specific plan for the investigation, and this trip is mainly to secretly investigate, try not to alarm this group of bulls, and there will be no conflicts." ”

After speaking, she told Bai Qing in turn.

"You too, just guard near Linghu Village, don't go deeper, after Zhiyi wakes up, let's go inside together to solve the problem of this worm mother, I have already learned the weakness of this worm mother."

"If there is any change, Transsion will contact us!"

"Okay, Transsion contact."

"Oh yes, I almost forgot to ask a question, why did you return to Xinliang City so quickly?" Bai Qing asked what she was puzzled about at the beginning.

"It's a long story."

"You don't have to go to the Sanyuan Temple tomorrow morning to investigate, the night is long, and you can have a long talk."

"It's related to evil spirits, so it's better not to tell you."

"Okay." Although Bai Qing agreed, she muttered something in her mouth, and she didn't know what to say, and then said, "Be careful, I'm still waiting for you to fulfill your promise." ”

"Okay."

The two looked at each other tacitly and smiled, hooking their fingers.

Without any more chatting, Lin Xixue went to bathe and change clothes, after all, she had lived on the mountain wall for five days, and her body was already full of ashes.

She changed her clothes, took the Gushen Pill, calmed her mind, looked at the faint morning light on the horizon, took out the mask of three emotions and covered her face.

Hey, hey, two chapters in a row, and three more chapters tonight!