The evolution of elixir fire is actually very difficult, and there is rarely a fixed pattern.
For example, Cheng Yu only obtained Samadhi True Fire at the beginning. Although his Samadhi True Fire evolved into Phoenix Flame, it does not mean that other people's Samadhi True Fire will also evolve into Phoenix Flame.
As for why his Samadhi True Fire evolved into Phoenix Flame, he was actually a little baffled at the time.
However, after coming to this world, he obtained the Holy City's "Nine-Alchemy Divine Magic Technique", and coincidentally, this "Nine-Alchemy Divine Magic Technique" happened to be almost the same as his "Nine-Alchemy Divine Magic Technique".
Moreover, the "Nine Pill Divine Illusion Jue" records in detail that pill fires such as Phoenix Flame and Dragon Flame will appear.
But what puzzled Cheng Yu was that the Holy City's skills actually appeared in the fairy world, and even had a different name.
Of course, the content recorded in "The Secret of the Derivation of All Things" is obviously not as detailed as the "Nine Pill Divine Illusion Secret" of the Holy City. This makes it easier to see that the content of "The Secret of the Derivation of All Things" comes from the "Nine Pill Divine Illusion Secret".
But Cheng Yu doesn't care so much now, he only knows that it's all related to the Holy City.
Maybe after defeating the Inner Dynasty, everything will come to light!
But when he looked at Cheng Keke's Hunyuan Dan Fire, he felt very incredible.
Because Hunyuan Dan Fire is a very rare and top-grade Dan Fire, which is extremely rare even in the immortal world. However, Cheng Keke actually evolved Hunyuan Dan Fire in the human world. He really felt that it was too outrageous.
"What did you do? How did you evolve the Hunyuan Dan Fire?" Cheng Yu asked curiously.
Over the years, he has been outside trying to figure out how to deal with the internal dynasty, and sometimes even when he returned to the Cheng family, he couldn't see Coco.
But he didn't expect that after not seeing each other for a few years, this little girl would even produce the Hunyuan Dan Fire, which really shocked him.
"Of course it's because I'm a genius. Otherwise, how could there be such a powerful Dan Fire? I even named it Little Gray Ball. But should it be called Hunyuan Dan Fire? You know this just from the name The pill fire is very powerful!" Cheng Keke said with a face of surprise.
In fact, when her Yuanling Danhuo became like this at first, she was frightened.
However, although this pill fire did not look very good-looking, she could feel that the power of this pill fire was very powerful.
So when she tried the power of this pill fire, her original panic suddenly turned into surprise.
"Little gray ball? This looks quite similar to it. But don't tell me that you really evolved like this without doing anything?" Cheng Yu laughed dumbly. This girl will not treat this Hunyuan Think of Danhuo as a pet!
"Brother, is this Hunyuan Dan Fire very powerful? Compared with your Dan Fire, which one is more powerful?" Cheng Keke asked curiously.
"Want to try it?" Cheng Yu was actually a little curious.
Hunyuan Dan Fire was extremely rare, and even in the immortal world, he had only seen it once.
As for its power, he had never seen it before, so he was really moved in his heart.
I wonder how this legendary Dan Fire compares with my own Dragon Flame?
After all, he is very confident in his Long Yan, and his pill fire has saved his life countless times. It can be said that this is a very useful trump card.
But he never expected that Coco would be able to evolve the Hunyuan Dan Fire.
"Just give it a try, but if brother is defeated by my pill fire, don't cry!" Coco said expectantly and excitedly.
"You really dare to think about it, then let's see which of our pill fires is more powerful!" Cheng Yu said with a smile.
The two of them retreated to a distance of about ten feet, and Shi Ji watched everything with a calm expression.
"Brother, are you ready? I'm about to start!" Coco said with excitement as the Hunyuan Danhuo floated on her hand.
"Let's start!" Cheng Yu nodded, and a dragon-shaped flame appeared on his hand.
The two of them released the elixir fire at the same time.
When the two kinds of elixir fire collided together, there was an explosion, and the two kinds of elixir fire exploded instantly.
Fortunately, Cheng Yu had set up a soundproof barrier in the small courtyard in advance, otherwise such a loud noise would have frightened many people in the Yunchoufeng backyard.
"Brother, what do you think of my little gray ball?" Coco said excitedly.
"This Hunyuan Dan Fire is indeed powerful. It is on par with my Long Yan. I believe it will be very useful for killing enemies." Cheng Yu said with a smile.
The two of them did not use their own power, it was a head-on confrontation between two kinds of elixir fire.
If one of the elixir fires is weak, the result will not be a direct explosion, but the weak elixir fire will be swallowed up by the stronger elixir fire.
Cheng Yu has used Long Yan to fight so many times, but he has never seen a pill fire that can block Long Yan.
But Hunyuan blocked it, which undoubtedly proved that the Hunyuan Dan Fire was no weaker than Long Yan.
However, Cheng Yu also breathed a sigh of relief.
After all, I didn't compare it with Hunyuan Danhuo when I was in the immortal world.
But the Hunyuan Danhuo was very famous, so he was a little worried that his Long Yan might lose to the Hunyuan Danhuo.
But now he can rest assured that his Long Yan is indeed powerful. Compared with such legendary Dan Fire, Long Yan is not weak at all.
"Hehe, I finally have a pill fire that is not weaker than my brother's!" Coco said excitedly.
In the past, she was particularly envious of her brother's elixir fire, which could burn everything, but she had also tried it herself, and her little gray ball could do it too.
So she really wanted to give her brother's Long Yan a try, but now she was even happier, as her own pill fire was not weaker than her brother's at all.
"Can you now tell me how you got the Hunyuan Dan Fire?" Cheng Yu touched Coco's head and said with a smile.
He was really curious about how Coco made this legendary elixir fire.
"Look at this!" Coco said and suddenly there was a gray stone in her hand.
"Hunyuan Stone? Where did you get it?" Cheng Yu was surprised again after taking the stone.
Hunyuan Stone is an energy stone with Hunyuan Qi.
Hunyuan Qi is the original Qi after the beginning of chaos, and Hunyuan Stone is the energy stone produced after absorbing Hunyuan Qi.
This is somewhat similar to spirit stones.
But compared to the spiritual energy in the world, the energy of Hunyuan is more precious, because all the energy in the world starts from the energy of Hunyuan.
In other words, this Hunyuan Qi can be said to be the ancestor of all energy Qi.
Therefore, the Hunyuan Stone with Hunyuan Qi is naturally extremely precious.
However, the Hunyuan Stone in his hand has lost any luster and looks very dim. Apparently, the Hunyuan Qi in it has been absorbed by Coco.
"Could it be that you absorbed the Hunyuan Qi from this Hunyuan Stone and then evolved the Hunyuan Dan Fire?" Cheng Yu asked curiously.