"Oh, it's a one-time thing. If you use it, the consumption is a bit large. Xiao Jiu muttered thoughtfully, "Is this thing expensive?"

The questions that Xiao Jiu asked in a row were all common-sense questions, so the Great Elder answered them very easily, and basically answered them fluently. However, this last question made the Great Elder a little difficult.

This thing is expensive...... Still not expensive...... how to answer?

Most demon cultivators are different from humans, and there is no concept of money within the group at all. If you need something, you can go to a place where there is that kind of thing and look for it, and if you find it, it's yours, and you can't find it, or you can exchange it with other things from other demon cultivators who have that thing. There is no price limit for this exchange, only whether the parties are willing or not. As long as both parties are willing, even if you use a broken stone that can be found everywhere and exchange it for a heavenly treasure, other demon cultivators will not say that you are a liar or something.

But on the other hand, if the other party doesn't want to change it at all, even if you forcibly exchange a broken stone in the other party's hand with a piece of heaven and earth treasure, you will also be disgusted by other demon cultivators.

In short, no matter what you want, you must first rely on yourself to find it. Secondly, it is to exchange what you have at hand with other demon cultivators. Neither the former nor the latter will involve money, as is the case with the Heartless Mountain Dragons.

Therefore, in the consciousness of the Great Elder, there are only two concepts of whether something is good or bad to find, and whether it is good or not. As for whether it is expensive or not...... The Great Elder couldn't answer. Because there is no such thing as "expensive" in his consciousness!

"Uh...... The words of the Shadow Stone...... There are a lot of them in the valley to the east. If Miss Jiu wants, I can ask the clansmen (the clansmen here refer to dragons, not people. Follow-up to this same place, no more explanation) to help you collect some. The Great Elder said.

"Can you collect it yourself?" That's great!" As soon as Xiao Jiuyi heard the Great Elder say this, she immediately thought that something like a lingering stone might not be expensive, so the idea in her heart might not need to be consumed much.

"You seem to have already thought of a great idea, don't you?" asked Ho Wei. If the Shadow Stone was useless for making a video phone, Xiao Jiu would not have asked the Great Elder to ask questions. Therefore, the reason why she is so interested in the Shadow Stone must be because she already has some kind of idea in mind.

"Wait, wait. If the data I just detected is correct, then as long as the same data can be detected later, my assumption will be fine!" Xiao Jiu said with some excitement.

"Wait a while?" He Wei asked with a frown.

"Hmm. After Xiao Jiu snorted, he quickly turned to the Great Elder and continued, "Great Elder, could you please demonstrate another use of that Shadow Stone." That is, to put out the image that has just been recorded in the Shadow Stone. ”

"Absolutely. The Great Elder smiled and raised his hand, but just as he wanted to pinch it, something suddenly came to his mind. Then he got up and said, "Why don't we go outside to demonstrate, if we go outside, we can see more clearly." ”

"Can I see more clearly when I go outside?Could it be that the image effect of the Shadow Stone is also related to the surrounding environment?" He Wei frowned and looked at the cave he was in at this time, and muttered to himself, "Is it affected by the intensity of the light?"

He Wei originally wanted to remind Xiao Jiu that if the environmental impact of the imaging effect of the Lingering Stone is too large, it will be very inconvenient to use, and it is better to replace it with something else. However, as soon as he arrived outside the cave, before He Wei could ask, the Great Elder began to demonstrate how to use the Gram Stone to project the recorded images, and then He Wei realized that he had completely made a mistake.

Looking at the other self who suddenly appeared beside him, sitting cross-legged, and the rock walls around him that seemed to be solid, He Wei suddenly understood the reason why the Great Elder had to come out and demonstrate outside the cave.

If the Great Elder at this time projected these images in the cave, then He Wei and the others would definitely not be able to judge the effect of the replayed images of the Lingering Stone because they were too real and most of them overlapped with the real cave.

"No wonder the Great Elder wants to come out to demonstrate outside the cave, if he was still in the cave, I would definitely think that the Great Elder hadn't done anything at all!" He Wei exclaimed.

The Great Elder smiled slightly when he heard this, and said, "The effect of this kind of shadow stone is not bad, if you don't look closely, you can hardly find any difference from the original scene. ”

"Okay! If this kind of image stone can be used to make a video phone, I believe that the image effect after the production is completed will not be worse than the stereo imager at all!" He Wei didn't finish speaking, so he set his eyes on Xiao Jiu, obviously wanting to ask Xiao Jiu whether this kind of image stone could be used in the production of video phones.

Xiao Jiu noticed He Wu's gaze, but he didn't answer immediately, but asked the Great Elder in a trembling voice, "I don't know how many of these Shadow Stones are there among the nobles?" Can you lend us two?"

In fact, after hearing Xiao Jiu's obviously trivial, He Wei already understood that it was feasible to use the Gram Stone to make a video phone. However, this kind of feasibility only exists in theory at present, so Xiao Jiu wants to borrow two Shadow Stones from the Great Elder to use, it is ready to practice that theoretical feasibility now!

"Miss Xiaojiu is polite. It's just two Shadow Stones, if you want to borrow them, it's too much to see!" said the Great Elder and beckoned to the side, and the One-Eyed not far away quickly leaned over and handed the Shadow Stone that had already been prepared to He Wei.

After He Wei thanked him, he began to act according to Xiao Jiu's instructions. First go to the plane (because He Wu has not returned to Tangchang City, so the plane is still parked on the top of Wuxin Mountain for the time being) and intercept a long enough wire. Then connect the two ends of the wire to the two Lingering Stones, and then hand one of the Lingering Stones to Youlan's hand, so that Youlan can use it later at the command.

In the end, He Wei and the three elders returned to the cave with another shadow stone, are you ready, waiting for Xiao Jiu's instructions.

"Alright, let's let the Blue Maiden start recording the scene outside with the shadow stone in her hand. Xiao Jiu commanded in a trembling voice with excitement that could not be concealed.