Although the heat in the cave was unbearable, Ouyang Yuan was very excited: "It's really hot here, but this is a very important place for us."
Without him saying anything, Ye Feng had already guessed where this place was.
Ouyang Yuan said with a proud look: "This is our weapon refining room. We have six weapon refiners. They have been making weapons for us for two hundred years. They are all powerful spiritual weapons and immortal weapons."
There was a faint red light in the cave ahead. That was not the light emitted by the red crystal, but the fire from the underground lava.
Ye Feng looked down from a crevice in the rock and saw an abyss underneath. Deep underground, a stream of lava emitting heat waves was flowing slowly forward like a river of fire.
As the lava river rolled, it was accompanied by bursts of rumbling thunder and even a kind of tremor.
When touching the hot stone wall, the trembling feeling is particularly strong.
In addition to the sound of the flowing underground lava river, there was also the sound of clanging and smashing iron tools, which was sonorous and continuous.
Halfway up the mountain from the underground lava river, there is an empty platform. A large furnace more than one person tall is gushing flames underneath, and the furnace body constantly spews out burning tongues of fire.
The furnace cauldron was carved with a fire dragon with bared fangs and claws. Its scales were burned red by the fire, and tongues of fire kept spurting out of the dragon's mouth.
On an iron platform surrounding the furnace, there were four bald men with bare upper bodies and only a piece of cloth wrapped around their waists. Their muscles were as strong as ancient Roman sculptures. They held large iron hammers and kept hitting weapons that were flashing with fire.
Sweat kept dripping from their bodies. When the sweat hit the ground, it immediately made a hissing sound and evaporated instantly.
On the weapons stand in the distance, there were many black iron weapons on display.
There were also two middle-aged men, holding golden carving knives in their hands, working hard to carve formations on two black iron swords. Their expressions were meticulous, and veins on their arms were bulging. They worked harder than those big blacksmiths.
Ye Feng could tell at a glance that they were carving a formation that would increase attack power. It was a fairy formation called the Giant Rhino Fire Spirit Formation.
It was a formation created by the Golden Immortal Daluo who imitated the operation of the demon pill of the Fire Spirit Giant Rhino.
Ye Feng had seen this formation in the Fairy Tower in the Changsheng Realm. Although it was only a flash of inspiration and a quick glance, he remembered it very clearly.
Although this is the demon world, the Golden Immortals all came from the fairy world, and the inheritance of their fairy spirit formations is exactly the same.
If Ye Feng only saw this fairy formation, he would not know how powerful it was.
However, Ye Feng later witnessed the operation of the Fiery Giant Rhino's inner elixir in the underground demon refining tower, and felt that the two immortal talismans in it not only failed to fully release the power of the Fiery Giant Rhino's flame, but weakened its power instead.
The four burly blacksmiths and the two middle-aged men all exuded an immortal aura. The burly blacksmiths were only at the earthly immortal realm. Although they were holding big hammers and had bulging muscles, they were not as advanced as the middle-aged men who were carving formations.
These two middle-aged men who carved the fairy formation not only had to have powerful fairies, but also had to be familiar with the fairy formation.
Needless to say, the two middle-aged men who carved the formation are both Daluo Jinxian.
Ouyang Yuan smiled and clasped his fists towards a middle-aged man who was carving a giant rhino fire spirit formation and said, "Uncle Master, thank you for your hard work."
Hearing Ouyang Yuan calling him uncle-master, Ye Feng was secretly surprised. It seemed that these two weapon refiners were of the same generation as old man Tianqin, which meant that they also came from the fairy and demon world. They were probably the first batch of Daluo Jinxian who attacked the fairy world five thousand years ago. However, they were weapon refiners, and their realm was obviously weaker than that of old man Tianqin. They were only at the mid-level Daluo Jinxian.
The middle-aged man looked at Ouyang Yuan coldly, then glanced at Ye Feng, and said indifferently: "This is a key place for refining weapons. Why did you bring in strangers? Take them out quickly."
Ouyang Yuan smiled awkwardly and said, "Uncle Master, this is not an ordinary person, but General Ye Fengye, whom Master has always praised. I brought him here specially to take a look at our refining room."
The two weapon refiners were unfamiliar with Ye Feng's name. They spent their entire days dancing with underground lava, furnaces, and weapons. They were not sensitive to news from the outside world, nor were they as eager to fight back to the surface as those ancient warriors.
They incorporated their own interests and achievements into these weapons. For them, creating a perfect magic weapon brought them a greater sense of accomplishment than attacking a city.
"What Ye Feng? We have never heard of him."
"Please leave and don't interfere with our weapon refining."
Ye Feng glanced at the long sword in the middle-aged man's hand, couldn't help laughing twice, then followed Ouyang Yuan.
He just laughed twice faintly, but this laughter sounded particularly awkward in the ears of the two weapon refiners, and it was clearly a mockery.
"Wait, you can just watch, why are you laughing? Do you know what we are doing?"
"Of course I know. You are carving the immortal talisman, but it seems that you carved it wrong. This will only reduce the power of this sword and fail to bring out the true power of their giant rhino spirit fire."
The two weapon refiners were a little surprised when Ye Feng said that he was carving fairy talismans, but they were soon relieved. This was common sense that everyone in the fairyland knew.
But what made them intolerable and angry was that Ye Feng actually said that the talisman he carved was wrong. They felt furious as if they were insulted.
"What a joke, you actually know about the immortal talisman? Boy, don't be so arrogant. You even said we carved it wrong."
"If you weren't a guest of Senior Brother Tianqin, I would never let you go and let you know what it means to respect your teacher."
"Young people nowadays are becoming more and more rude."
Seeing Ye Feng being scolded by his two uncle masters, Ouyang Yuan felt very embarrassed and quickly apologized to the two uncle masters.
"Second Master, General Ye just said it casually, it was unintentional, please don't be angry."
Ye Feng was not angry when being scolded by two weapon refiners, he just smiled.
He recited two sentences casually: "Giant Rhinoceros Fiery Pill, turn left and grow in the clouds, the earth fire produces Kan and Li, neither side gives way to the other."
It sounded like a doggerel, and Ouyang Yuan didn't understand anything, while the two weapon refiners' faces suddenly changed. This was not a doggerel but the essence of the immortal talisman formation.
The two sentences Ye Feng recited were the secret of the fairy talisman that they had carved with great effort and pressed into the sword.
This is a secret method of the immortal talisman formation that is not passed on and ordinary people would not know about it. They immediately doubted Ye Feng's identity.
A weapon refiner shook the sword in his hand, and the fairy talisman he had just carved burst into flames, turning into a wall of fire, blocking Ye Feng.
The weapon refiner shouted coldly, "Who are you? How do you know the immortal talisman?"