This old man's beard is white, thin as firewood, and his aura is extraordinary, with an image of a master outside the world.

And his aura was as powerful as the sea, enough to shock everyone on the scene, including the deacon who was invigilating.

There is no doubt that he is a third-level martial artist!

Seeing this old man, Liu Long immediately showed respect: "Master, you ...... How did you get here? ”

Hearing Liu Long's words, everyone's eyes widened in surprise.

It turned out that this old man with white hair was Liu Long's master Lu Yi.

"Elder, are you here?" Seeing Lu Yi, even the invigilator deacon greeted him respectfully.

However, Lu Yi turned a deaf ear to the greetings of the two. He snatched the detonator from the deacon's hand, and then a face was full of shock.

"How's that old fellow, am I right?" Lin Yun asked Lu Yi lightly, his faint tone and expression, as if he had expected this scene.

In fact, Lin Yun had already discovered that Lu Yi was staying nearby. It was precisely for this reason that Lin Yun deliberately said the problem of these two talismans, in order to lure Lu Yi to appear.

Hearing Lin Yun's address to Lu Yi, everyone was completely stunned.

Lu Yi is the outer gate elder of Yuzhou Martial Mansion!

Lin Yun actually called him "old guy", is he impatient?

For a while, everyone looked at Lin Yun with the eyes of watching the play, obviously looking forward to how Lu Yi would punish Lin Yun next.

However, what everyone never expected was that Lu Yi didn't mind Lin Yun's disrespect to him, and he didn't even have the slightest anger on his face, just stared blankly at the talisman in his hand and muttered to himself.

"I really didn't expect it, I really didn't expect that this talisman also had a deviation of one thousandth of a millimeter, and the old man didn't find it, it was the old man who was too careless!"

As he spoke, Lu Yi looked up at Lin Yun, his eyes full of admiration: "You can actually find a deviation of one thousandth of a millimeter in an instant, how on earth did this work?"

As soon as these words came out, the audience was shocked!

Including the deacon, everyone looked at Lin Yun with a petrified expression.

The entire scene fell silent at this moment, as if time had been frozen.

They originally thought that Lin Yun said that the two talismans were biased, and they were just making things up. But I never expected that he would really be right.

It is unbelievable that a young man who came out of nowhere could find a subtle deviation that even a master like Lu Yi had missed!

"How? Isn't that difficult? Lin Yun replied lightly, as if he was talking about a trivial thing that was easy to do.

Lu Yi almost didn't spurt out a mouthful of old blood.

l_ cool! F-craftsman; Net (o genuine ● first '● hair:

That kind of deviation at the micro scale, even he, an old man who has studied the talisman for many years, is difficult to find, and there are often omissions.

And in Lin Yun's mouth, this was said to be as easy as eating.

Everyone was also choked by Lin Yun's words, and they couldn't speak for a long time.

After half a ring, I saw Lu Yi take a deep breath and ask Lin Yun excitedly: "Little brother, you just said that the drawing materials should not be made of Burst Flame Animal Skin, so what kind of skin should be used?"

In fact, as Lin Yun said, all detonation charms on the market will self-destruct.

There have been countless accidents caused by this, and many people have been accidentally injured or injured.

Even Lu Yi himself has been injured by accidents several times. If it weren't for the lack of power of the detonating charm, he would have died long ago.

Although the phenomenon of self-explosion is frequent, people have not been able to find the real cause, and can only regard it as an uncontrollable natural phenomenon.

It wasn't until he passed by here today that Lu Yi happened to hear Lin Yun's words, so he changed his angle to think deeply about this problem.

Lin Yun said expressionlessly: "Among the third-level drawing materials, only the Split Tooth Beast Skin is suitable for the Detonator."

"When it comes to the power of the Detonating Charm, the Cracked Tooth Beast Skin is not as good as the Flame Burst Beast Skin. However, the nature of the skin is very stable and will not self-detonate due to external factors. ”

"Cracked tooth hides? I've tried this before. But the power was too small, and the cost was too high, so it was later abandoned, and few people on the market used it. Lu Yi thought back and said.

Lin Yun looked at Lu Yi with disdain, as if he was looking at an apprentice with extremely poor talent: "I said just now, that's the reason for your own life."

"Your drawing technique is not mature enough, and the drawing tools are not used correctly, so the power of the finished product is insufficient, and you can only rely on the unstable material of the Flame Explosion Hide to increase the power."

Everyone gasped.

When Lu Yi was not at the scene before, Lin Yun pointed out Lu Yi's shortcomings, which was enough to make everyone secretly embarrassed in their hearts.

And at this moment, Lin Yun actually appeared in front of Lu Yi, and said without any worries that Lu Yi's drawing technique was not mature enough, which simply blinded everyone's eyes!

Isn't this kid really afraid of annoying this master?

"Boy, you have repeatedly belittled my master! I'll teach you a lesson for you! Liu Long finally couldn't bear it anymore and threatened to teach Lin Yun a lesson.

However.

Before he could make a move, he was slapped out by Lu Yi.

"Get out of the way, don't get in the way of being a teacher!"

After Lu Yi slapped Liu Long away, he still turned to Lin Yun casually and asked, "Little brother, since you said that you shouldn't use a Xuanjin pen for drawing tools, what should you use?"

"Just use a regular volcanic pen." Lin Yun replied lightly.

Lu Yi frowned slightly, and asked puzzledly, "Volcanic Rock Pen?" Isn't this a lower-level drawing tool than the Xuanjin Pen? ”

Most people think that the higher the drawing tool, the better the rune will be.

Therefore, no matter what talisman they draw, they are accustomed to using the Xuanjin pen, but they have never considered the question of suitability.

After thinking about it carefully, Lu Yi said to Lin Yun again: "Moreover, the structure of the volcanic rock pen is more unstable than that of the Xuanjin pen, so it should be easier to leave material residues, right?"

Lin Yun still explained expressionlessly: "It doesn't matter if it's a Xuanjin pen or a volcanic rock pen." No matter what kind of pen you are, during the drawing process, a trace residue will be left behind. ”

"Indeed, as you said, the volcanic rock pen is more likely to leave material residues than the Xuanjin pen."

"But unlike the Xuanjin Pen, the material residue of the Volcanic Rock Pen not only does not reduce the power of the detonating charm, but can also play a certain buff role."

"This is because in the Volcanic Rock Pen, there is an ingredient called gunpowder, and it is this ingredient that increases the power of the detonator."

After listening to Lin Yun's words, Lu Yi patted his head: "I didn't think of this question before, it's really a life in vain!"

Lu Yi also knew that gunpowder was extremely flammable and could explode in confined spaces.

Volcanic pens, on the other hand, contain a high concentration of gunpowder. This point has been ignored by him.

It wasn't until Lin Yun mentioned it at this time that he suddenly realized how stupid he was before!