"Teacher, what is it about the strange treasure that makes you so excited?" Yi Xuan said inexplicably.

"Boy, you really picked up the treasure this time, do you know what this strange treasure is? The old man will tell you today, that is to know the fire!" He Lao said excitedly.

"Master, is it very good at knowing fire?" Yi Xuan said puzzled.

He Lao listened to Yi Xuan's words, and almost spurted out a mouthful of old blood......

"Boy, do you know how important this fire is to an alchemist?"

"Master, I really don't know about this. Yi Xuan said helplessly.

"If you want to talk about this fire, you have to start with the flame of alchemy, in the entire Demon Dou Continent, the most common flame of alchemy is ordinary mortal fire, that is, a kind of flame produced with the help of martial arts. ”

"And the more advanced flame is the beast fire generated in the body of the demon beast, but these two flames are generally the more common flames in the Demon Dou Continent, but ......," He Lao said in a slow voice.

"There is a kind of flame in the Demon Dou Continent that distinguishes it from these two flames, they are all unique, they are called the Fire of Ten Thousand Flames, and this flame is believed by all alchemists! Later, people called them the Fire of Consciousness, the Fire of Divine Sense!" He Lao said excitedly.

"That master's knowledge of fire is so powerful, isn't it very rare!" Yi Xuan asked subconsciously.

"This knowledge of fire is not only rare, it is very rare. Disciple, do you know that all the senses and fires in the Demon Dou Great Road add up to eighteen. And each kind of fire can only exist in the world, although it is eighteen kinds of fire, in fact, there are only eighteen!" He Lao said.

"What, there are only eighteen kinds in the entire Demon Dou Continent...... Oh no, it's eighteen!Master, you won't lie to you!" At this time, Yi Xuan was really frightened by He Lao. This knowledge fire is so big, there are eighteen flowers in the entire Demon Dou Divine Prefecture, how strange is this!

"Boy, you don't have to be so surprised! you must know that the Heavenly Demon Sacred Stone in your body is even more precious, more precious than the fire!"

"By the way, Master, the Heavenly Demon Sacred Stone has been in my body for so long, I don't even know its origin, Master, do you know?" Yi Xuan asked Xiang He.

"Disciple, don't ask about this Heavenly Demon Sacred Stone, when you become strong in the future, the teacher will naturally tell you, now is not the time. He Lao said.

"The apprentice knows, but the teacher said so much, could it be that the treasures here are related to the knowledge of fire?" Yi Xuan asked suspiciously.

"Yes, in vain. The strange treasure that the teacher said is the real knowledge of fire! and not related to the knowledge of fire. He Lao's voice came slowly.

"What, master, this strange treasure turned out to be the real fire of knowledge!, so where is it now?" Yi Xuan said in shock.

"I can't imagine that this little Qingqi Kingdom actually has the knowledge of fire between heaven and earth, this is really impermanent!" He Lao didn't care about Yi Xuan's words, and sighed to himself.

"Master......" Yi Xuan said helplessly.

"O'...... I remembered the past for a while, so I was a little distracted, and you just asked where this fire is. According to my senses, I should be able to find it if I follow the rock. He Lao said.

"Then let's hurry up!" Yi Xuan said hurriedly.

I saw Yi Xuan like a dexterous lark, walking like a fly on this intricate rock.

"Right here!" When Yi Xuan stopped to rest, He Lao suddenly said excitedly.

"Where?" Yi Xuan searched around, but he didn't see where this fire was.

"In which cave, I feel its breath!" He Lao said.

Then Yi Xuan went headlong into the cave. I have to say that this cave is very big! When Yi Xuan was about to come to the end of this cave, he finally saw this legendary fire of knowledge!

I saw that this fire of consciousness glowed with red fire, and its appearance was also very peculiar, it was like a burning red heart.

"Sure enough, as I expected, this is the eighteenth-ranked Firefly Phantom Core Fire in the Knowing Fire!" He Lao's voice came lightly into Yi Xuan's ears.

"Master, how do you see that this is the Firefly Phantom Core Fire?" Yi Xuan asked.

"Apprentice, do you remember that you just fell into a deep illusion and couldn't get out?" He Lao said.

"Of course I do...... Could it be that Master, what do you mean?" Yi Xuan said in shock.

"That's right, the illusion you just now was done by this firefly illusion core fire!" He Lao said.

"Master, this firefly phantom core fire is so hot, how can I subdue it!" Yi Xuan said worriedly.

"Boy, you should be content! As far as I know, it's supposed to be a newborn Consciousness Fire. I also forgot to tell you that the Knowing Fire will be reborn every three thousand years, unless those who rank in the top few Knowing Flames don't need to be reborn! Now it doesn't even have a ten-thousandth of the strength it had before it was alive, so you can get so close to it, otherwise you will be burned to slag!" He Lao said.

"So, master, how should I subdue this Firefly Phantom Core Fire?" Yi Xuan asked.

"Apprentice, this Yingdi Phantom Core Fire is slightly inferior to other Consciousness Flames compared to the power of the flames, but this Yingdi Phantom Core Fire is indeed very powerful in the Illusion Realm, if you want to subdue this Yingdi Phantom Core Fire, as long as you open your Divine Sense and use your Divine Sense to approach it, this process may be very painful, and you will hallucinate again! However, you don't have to be afraid, you still have the Heavenly Demon Holy Stone and your master and me on your body!" He Lao said proudly.

"Master, since that's the case. The disciple is willing to give up his life!" Yi Xuan said.

"Hehe, the kid has to be like this, wealth and danger are sought, how can you get ahead without taking some risks. Alright, let's start as soon as possible, lest we have too many dreams at night!" He Lao said.

"Hmm......" I saw Yi Xuan walk to a place about a zhang away from the Firefly Phantom Core Fire, and then sit down cross-legged. Let go of your divine consciousness and gradually get closer to this eighteenth type of consciousness!

"Ah......" As soon as Yi Xuan came into contact, he felt an endless burning sensation coming, making Yi Xuan's divine sense almost collapse! Whenever Yi Xuan really couldn't bear it, the Heavenly Demon Holy Stone would emit a faint purple light, repairing Yi Xuan's body and divine sense.

"Apprentice, the most important time has come......" Just when Yi Xuan hadn't finished listening to He Lao's words, Yi Xuan suddenly came to a vast prairie!

Just when Yi Xuan looked at this strange place with a surprised face, he saw a group of people chasing a little girl in front of him......

"Brother, come and save Jing'er!" The person who was chased was Yi Xuan's little sister Yi Jing.

"Jing'er, who is chasing you!" Yi Xuan said with a murderous face.

"Brother, it's them!" Yi Xuan fixed his eyes and saw that it was Song Jiangwei......