Adair picked up his sword and held it to his chest, he closed his eyes and whispered something before he opened them for a moment.

He held the sword in his left hand, and with his right hand he stretched out his index finger and brushed it from the hilt to the tip of the sword.

He saw the fiery red element spread from his hand, and soon enveloped the entire long sword.

The slight flame of the long sword burner, the flame tongue swallowed on it, and the appearance was impressive.

"Boss Adair, good job, bake that kid to charcoal. There was the cheering of the little minions of the Wolf Hunter Guild from the crowd.

"Boy, beg for mercy, and wail in pain under the sword of my fire demon sword, Adair. Adair whispered.

Adair crossed the sword and pointed it at Nalan Torture.

Vic looked at Adair's burning elemental state in the crowd, the scorching fire shone, it was not a simple firewood, he looked at Nalan Xingtian, and there was a trace of worry in his heart.

Yang Shen's mouth opened wide, this was the first time he had seen a fight between elemental swordsmen in the true sense of the word.

Janet and Yang Xueli ignored a glance, they saw the panic and worry in each other's eyes, they could do nothing but hold each other's hands tightly, and the palms of those hands were wet with sweat.

"Fire Demon Sword?" Nalan Xingtian watched Adair's elemental burn, this was the first time he saw the flame elemental burning eruption, he smiled: "Good title, the appearance is also bluffing, but I don't know how much damage this flame has." ”

"Hmph, ignorant boy. Adair snorted coldly and swung his sword again, and the long sword in his hand crossed an arc and struck towards Nalan Xingtian.

This sword was not the same as before, not only the roar of the blade, but also the heat of the flames, the blade slashed, and the traces of the flames burned in the air to form an afterimage.

Nalan Xingtian saw the long sword attacking, and the heat wave hit his face.

Nalan Xingtian's footsteps moved, and his figure disappeared in a flash.

The white light flashed, the sword wind flew, and Adair's sword burst in the dance, but it was still only an afterimage that hit Nalan Xingtian.

Adair was not discouraged, calmed down, and waved again.

The long sword in his hand slashed sideways, his movements were neither fast nor slow, orderly, and seemed to be full of some kind of law.

Nalan Xingtian still dodged with nine steps, and between moving and transferring, his pace became more and more proficient.

Everyone saw the fire sword of Adair waving, it seemed to be connected, a sword light returned, the afterimage of the fire light had not yet dissipated, a sword light flashed, and bright traces shone in the sight.

The traces were horizontal or vertical, the posture and trajectory were different, and slowly, Nalan Xingtian noticed that something was wrong.

He began to dodge easily, but as Adair swung more and more, there was nothing else in Nalan Xingtian's sight, and it was full of traces of fire.

This line of sight is about to be blurred.

Fire Demon Sword, Nalan Xingtian looked at the firelight everywhere, and seemed to understand the origin of this title.

Another sword, a magnificent sword light full of flames slashed, Nalan Xingtian dodged, but looking at the fire of those dazzling eyes, he lost his mind for a moment, and he couldn't dodge, and the corner of his clothes was hung by the flame sword, and the flames were infected as soon as he touched it, and the corners of his clothes burned instantly.

Nalan rolled on the ground and rolled a few times before extinguishing the flames and standing up again, the corners of his clothes had burned off, and the few strands of hair in front of his forehead were also scorched by the flames, looking embarrassed.

"Look at that idiot, haha, you're just going to run away or you'll die in a few turns. Darnell scoffed in the crowd, causing everyone from the other Wolf Hunter Guilds to laugh.

Adair held the Flame Sword, he looked at Nalan Xingtian, and said: "At your age, I have hardly seen anyone better than you, but now you are not my opponent, and you will also pay the price for your meddling, hehe, destroy a young man with unlimited future with your own hands, that pleasure is difficult to tell." ”

Adair said this, his eyes glowing with hunger and thirst.

Nalan Xingtian was unmoved, he didn't care about Darnell's ridicule, nor did he care about Adair's threat, he looked at Adair and asked a question: "Your title is the Fire Demon Sword, and there seems to be an ability in your swordsmanship to confuse the naked eye." ”

"You've found out, hehe, do you want to know why? Adair swung it again, his tall body and extremely long arm span, and the flaming sword in his hand swung again in an arc-shaped trajectory.

The sword light of the flames, the traces of the blurred vision, Nalan Xingtian dodged and found that just like just now, his sight was full of firelight.

This will not work, and if you continue like this, you will lose.

Nalan Xingtian thought as he dodged.

Flames, Fire Demon Sword, and their connection?

In a flash of inspiration, Nalan Xingtian smiled, it turned out that the seemingly magical swordsmanship was actually such a simple principle.

The flame is a high-temperature plasma that heats up the local air, and the air becomes less densely heated, forming a miniature convection with the surrounding cold air. Because the refractive index of air is different at different temperatures, it will cause different degrees of refraction of light, so a distortion can be seen.

The same effect can be achieved by a rapidly swinging flame, which will make the position of the sword visible to one's own eyes slightly different from the actual position of the sword, and the illusion of visual deception is like the deviation between the position of the fish in the water and the actual position due to the refraction of light on the surface of the water.

And all this is just the knowledge of physics in junior high school.

"Fire Demon Sword. Nalan Xingtian muttered in a low voice, "I see. ”

"Don't just run, fight back, boy. Come, take the knife in your hand, and slash me. Adair roared loudly as he swung his sword.

"Adair, don't worry, soon. Nalan Xingtian responded.

Since I see the illusion, let me see the truth.

"Apocalypse. Nalan Xingtian shouted.

"The apocalypse is on standby. ”

"Taking over my vision, filtering through the aftermath of fire and air distortions, I need to see where the real sword is. Nalan Xingtian said.

"Didi...... Didi, take over the host's vision, filter the flame remnants, restore the air distortion scene, establish a data model, and establish a medium ...... The establishment is complete. ”

Nalan Xingtian felt that his vision was first gray, and then the whole vision dimmed, and then the color instantly recovered, and the whole world brightened again.

The world has not changed at all, and there has been no change in sight, but in the eyes of Nalan Xingtian at this moment, the long sword wielded by Adair is just a long sword, and those flames and afterimages have all disappeared, and it doesn't look so mysterious and fascinating.

"Fire Demon Sword. The corners of Nalan Xingtian's mouth pulled into a bright smile: "But that's it." ”