"Hey, don't go. Seeing Gu Chensheng's lack of interest, the shopkeeper hurriedly greeted, it was rare for a young man to patronize, how could he say no.

"Sorry, there wasn't anything I wanted. Gu Chensheng responded.

"Don't worry, look at this. The shopkeeper took out a box from his pocket and handed it to Gu Chensheng.

Gu Chensheng took the box and didn't open it, because he saw that this box was not made of high-end materials, and it seemed that it was just better than the boxes in the stall in front of him, which were placed at random.

In this regard, Gu Chensheng has no resistance, after all, people are also doing business, if someone is really greedy and cheap, it can be regarded as a lesson.

And looking at the size of this box, Gu Chensheng guessed that eighty percent of what it contained was also a piece of jewelry or something.

"No, I don't need that. Gu Chensheng didn't open it, put the box back on the stall casually, and said to the boss.

"It's used, it's used. Seeing that Gu Chensheng was still about to leave, the stall owner hurriedly walked over, grabbed Gu Chensheng, and opened the box at the same time.

There was no very brilliant light, and lying quietly in the box were stunned by two round black balls.

"Pearls?" Gu Chensheng wondered, but pearls were of little use to him.

"These are earbuds. The shop owner said with a smile on his face, in his impression, Gu Chensheng had just come to his stall, but he said that it was very noisy here, originally he was going to wait for Gu Chensheng to buy something and then sell the earbuds, but seeing that he was not interested, he had to sell this in advance.

"Oh, these are earbuds, how do you use them. Gu Chensheng really became interested, after all, if he wanted to hang out here, it was not a good thing to be disturbed by noise all the time.

Thinking of this, he couldn't help but glance at this boss a few times, what a master...

"Oh, this little brother really doesn't know how to use it?" asked the boss, a little surprised.

Seeing Gu Chensheng nodding, the boss first showed a suspicious look, and then turned positive again.

In fact, it's no wonder that Gu Chensheng doubts the use of these earbuds, it's just that the volume of these two black balls is really too big, and if he is asked to stuff this into his ears, I'm afraid it will be difficult.

"Hehe, guest officer, come and see, this is the treasure of the small shop, and pedestrians who come and go need this kind of earplugs. The boss said as he took the two black balls out of the box.

After the black ball is taken out, the line pendant that has been pressed under the black ball is also presented, with the foil of this line pendant, these two black balls, isn't it the appearance of an earring.

"Guest officer, you only need to put this under your ear, run the true qi, this treasure will naturally be adsorbed on your earlobe, this treasure has a transformation array inside, which can arrange a sound barrier to isolate the noise outside, you must know that non-Yan martial artists need this. The boss put the earbuds in front of Gu Chensheng and showed them and said.

"Seems good, how much. After Gu Chensheng realized that this seemed to be a very practical thing, he hurriedly asked.

Seeing that the young man was finally going to buy something, the boss still said with a professional smile: "15 coins, but for the sake of your relationship with me, I can just accept 10 from you." ”

"10 coins?" Gu Chensheng did not doubt him, because he felt that since the martial arts academy needed 10 coins for a martial arts performance, 10 such small objects should not be a lot.

Thinking like this, Gu Chensheng took out the coin from the money bag and handed it to the boss.

"This... This..."The boss got the money, and he didn't say anything for a long time, looking at Gu Chensheng.

With earplugs on, he didn't hear it at all, and the words of the boss behind him left on his own. Because he didn't know that even the currency issued by the mainland had a face value, and what Zhong Qing'er gave to the two of them was not the 10 coins that the martial arts academy had maintained and lost, but 400 gold coins that could be exchanged for 100 coins.

Gu Chensheng, who thought that he hadn't spent much money, didn't know that he was already very extravagant. Of course, even if he knew, he didn't feel anything.

Putting on earplugs to isolate the annoying noise, Gu Chensheng continued to wander happily.

"Good mood. The somewhat indifferent voice of the Demon King in the sea of knowledge sounded.

"Demon King senior. Gu Chensheng said hello. He also thought about it, except that Su Xi and the old woman didn't like others to call him a senior, the mysterious black shadow and this demon king who didn't know how to call him were a bit of a good teacher, anyway, it was not a lot of meat to call the senior teacher twice, and Gu Chensheng would go with the flow.

"Think you've earned it?" said the demon king with some sneer, but he heard the boss's muttering clearly, and saw that this silly boy was still having fun with himself, so he couldn't help but remind him out loud.

In fact, he is even different from Gu Chensheng, if he really wants to talk about gold coins, this guy is only afraid that he doesn't care even more, but because of so many shouts from his predecessors, when this kind of time is not painful or itchy, he has nothing to lose by saying a word or two.

Especially, if he really wants to see this kid deflated, he will also be happy, after all, when he was rescued by Su Xi and Mr. Mo, he was very embarrassed.

"I don't think I have much to lose. Gu Chensheng glanced around and saw that it was not just him, but many people had earbuds with this mini sound barrier on their ears.

"This is just a small thing, do you think that only Yan Martial Master can arrange the sound barrier?" said the Demon King.

"Isn't it? Gu Chensheng was stunned for a moment, and then said very casually: "Please ask the seniors for advice." ”

This is also Gu Chensheng's character, he wants to learn something all the time, although he usually seems a little lazy, but his essence is definitely a person who is willing to endure hardships and make progress, these demon kings all see it in their eyes, three times a day of true qi cultivation, as well as the two kinds of magical powers and many exercises, as well as the means that he has never shown in this world, of course, that is also the mysterious black shadow has reminded him emphatically, after all, he really has to show the exercises of another world, the flaws are too big to say that the sky is broken at his age, and it is impossible for him to create a new genre, so if he is really deceived by this kid's lazy appearance on the surface, he is afraid that he will not know how he died。

"The sound barrier is a skill against the Yan Martial Master, and the use of the voice by the Yan Martial Master can make it easy for them to master this skill, but it definitely does not mean that the sound barrier is a skill that only the Yan Martial Master can use. The Demon King said.