Five minutes later, the three of Gail returned to the ground, did not stop, and shot directly towards Ouyang Feng and the others, who had retreated to a thousand meters away.

Yu Ouyang Feng converged, and Gaier, who had gained a lot and was in a good mood, took out a basin-sized earth fire crystal and handed it to Ouyang Feng and said, "Keep it for you to play." ”

Ouyang Feng was not polite, put away the earth fire crystal, looked at the underground hole dug in the distance and said, "There won't be a volcanic eruption directly, right?

Yaheng smiled faintly and said: "Don't worry, it will look a little scary at the beginning, and it will be fine after a while, and when the underground fire pulse is calm, we can officially start construction." Ouyang Feng nodded, he was very afraid of volcanic magma, and he secretly took out a few defensive talismans in case of emergency.

Time passed little by little, and everyone calmed down, listened carefully to the movement, and did not dare to make a sound. For a long time, Ouyang Feng and Qingfeng, who had good ears, suddenly heard a sound that seemed to be ice breaking, and then this sound continued to sound, faster and faster, more and more dense, and finally, after the sound of a heavy object falling into the water, the earth trembled, and a heat wave erupted from the mouth of the cave, and then, the fiery red magma was sprayed high into the sky, and it was not scattered until a height of dozens of meters.

The smoke and dust and heat waves came to their faces, Ouyang Feng and the others instinctively kept retreating, and only Gail, Yaheng and Angelo remained immobile in the face of the surging magma, still maintaining their composure.

Facing the volcanic eruption-like scene, Ouyang Feng and the others were shocked, this terrifying momentum, everyone who was shocked was silent, and the quiet viewers may have only seen a magnificent scene in their lives.

Long. The heat wave and magma gradually subsided. The magma that poured around from the entrance of the cave began to solidify little by little. At this time, Ouyang Feng and the others were already covered with thick volcanic ash, but no one cleaned up, just watched quietly.

When the magma completely stopped gushing out, and most of the magma on the ground solidified, the three of Gail let out a sigh of relief, and motioned for Ouyang Feng to wait in the hot place, the three of them. Luck and spiritual power protected his whole body, stepped on the blackened magma condensate and slowly walked towards the entrance of the cave.

Standing at the entrance of the cave, facing the gushing heat wave, Yaheng nodded to Gail and Angelo, under the guidance of Yaheng, the three of them began to build a mysterious formation with earth fire crystals, judging from the scope of the three people's layout, the area of this formation is not small, and it will take a certain amount of time to complete.

At this time, a craftsman with a certain amount of experience commanded the handyman to carry a variety of materials to the specified direction. Just wait for Gael's circle to be completed and seal the heat of the underground fire veins. They will rush up to build buildings and facilities on the surface.

Ouyang Feng didn't wait, when everyone else was busy, they found a corner to sit cross-legged and meditate, recovering their fighting energy or spiritual power, Ouyang Feng wanted to go over to see what kind of magic circle Yaheng had arranged, but out of his ignorance of the magic circle, Ouyang Feng still gave up this idea very interestingly, and honestly hid aside to recover his spiritual power.

Adonis and Elena, at this time, can be regarded as having found a sense of existence, the two guys with the lowest cultivation among the cultivators present, looking like the current nervousness of the great enemy, stayed by Ouyang Feng and the others, acting as protectors to prevent someone from coming to sneak attack, or to disturb them.

The magic circle was much more cumbersome than Ouyang Feng imagined, and after a long time, Ouyang Feng and the others recovered their body and spiritual power, and the three of them were still busy, but from a distance, the big array was already quite rudimentary. Ouyang Feng and the others recovered their spiritual power, and the Dharma protectors Adonis and Elena ran away without being able to stop running, this time, the two went around to the north, looked at Gael and them from a distance for a while, and felt that it was not interesting, so they went to the mountains and forests to the north to continue their training.

Ouyang Feng didn't notice this, if he did, he would definitely stop Elena and Adonis, because he had already investigated the area in the south, and there were no powerful beasts, monsters or anything, but in the north, Ouyang Feng and Bruce just glanced at it casually, and they weren't sure if it was dangerous.

Others can't help, Gail and Angelo are only responsible for starting, the most tired and laborious is Yaheng, although he knows a little about the formation, but this formation is already the limit for him, it is quite difficult to arrange, it has been changed countless times, a lot of precious materials have been wasted, and it took nearly eight hours to arrange this simple formation in the eyes of the formation master.

After the formation was completed, both Yaheng, Gael and Angelo were exhausted, and after taking a deep breath, Yaheng took out a pale red fire type mid-grade spar and inlaid it in the corner of the circle.

As the spar was connected to the magic circle, the energy in the spar gushed out at a speed visible to the naked eye, filling the entire magic circle along the veins of the formation, and the originally pale red spar gradually became dim. However, when the circle was filled with energy, the energy in the increasingly faint hedron no longer lost, but rose a little bit.

Seeing this scene, Yaheng finally breathed a sigh of relief, waved to the crumbling Gail and Angelo, and said, "It's done, let's go back and rest." ”

Gail and Angelo looked at the magic circle with red light, glanced at each other, and then looked at Ouyang Feng in the distance, Gail whispered to Yaheng and Angelo: "We have consumed so much vitality, I don't know if it's worth it?"

Yaheng shrugged: "Otherwise, what should I do? Everyone has spoken, you can't make excuses to shirk like you used to do to others, don't say anything about whether it's worth it or not, the alchemy materials will be sent back soon, and when the pill is baked, you will know whether it's worth it or not, haha." ”

Hearing the pill, Angelo's face showed a smile, and he nodded in agreement and said: "That's it, I think that in addition to the pill, those boys will give us more unimaginable surprises, looking for us to help, I think it's a kind of temptation, or just this matter, those masters behind them can be solved with a wave of their hands, why let us spend Zhenyuan to do this?" Gail felt that Angelo's words were very reasonable, and he was a little depressed because of the loss of Zhenyuan, and he also relaxed, and the three of them laughed and walked towards Ouyang Feng.

Just now, when Yaheng activated the magic circle, everyone watching from afar only felt that the red light flashed at the entrance of the cave, and then, the heat wave that had been gushing out of it disappeared, replaced by cool and fresh air, which made people feel more comfortable.

Yaheng and the others came to Ouyang Feng and the others, Yaheng first waved to the craftsmen who had been waiting for a long time and said: "Okay, you can go over and start work, remember not to touch the magic circle, just build according to the design drawings given to you before." The craftsmen didn't say much, but after holding back for a long time, they finally had a place to use, and rushed up with their respective men and a lot of materials, and in a short time the hole was completely watered.

Yaheng smiled and said to Ouyang Feng: "It's not okay to be unconvinced, such a magic circle has tossed the three of us enough." ”

Ouyang Feng smiled faintly and said: "The three old brothers are not old, I won't say thank you, it looks like an outsider, and they are all here." As he spoke, he slammed his right fist on his heart.

Ouyang Feng's statement made the three of Gail feel very relieved, Yaheng feigned anger, and said a little complaining: "It's really a foreign way for a little friend to say this, the three of us old guys have a relationship with Xiaoyou, you don't have to care if you help a little, everyone should help each other." Ouyang Feng nodded with a smile.

Seeing that Ouyang Feng understood what he meant, Ya Heng coughed lightly and said with some embarrassment: "By the way, the magic circle just now is the effect of sealing the heat gushing out, of course, there are other functions, such as opening the gap, pulling the earth fire to the ground, etc., but these still need to wait for those craftsmen to complete it, and then link the sub-array again under the earth fire furnace, and I will introduce it to you in detail at that time." Ouyang Feng nodded again and again, seeing that Yaheng and the others were tired, he hurriedly asked him to rest to the side, and then walked to the place where the magic circle was located with Qingfeng and Barlow to watch it up close.

Qingfeng had a little study of the formation, but when he saw the 'huge' formation, he only felt dizzy, and he couldn't tell the difference at all, so he could only sigh.

Ouyang Feng found the leader of the craftsmen, and looked at the drawings of the construction, and under the explanation of the craftsmen, Ouyang Feng finally figured out the composition and function of the building to be built, and at the same time admired the wisdom of human beings in his heart.

It turned out that these craftsmen were going to use the central formation as the center of the circle, and built ten adjacent and independent highly sealed rooms, the room had no windows, only one door, and the materials used were all very precious igneous rocks that could withstand high temperatures, and in the center of the ground of each room, there was also a half-meter diameter circular pipe, which passed through the ground like a sewer and was connected to the central circle.

Ouyang Feng knew that these rooms were where the so-called earth fire furnace was located, and when the craftsmen completed the basic building, Yaheng Hui arranged the sub-formations again at the mouth of those pipes to connect with the central formation, and then got some alchemy furnaces or refining furnaces, and the earth fire furnace would be completed.

However, a new problem arose, Ouyang Feng had not prepared any alchemy furnace or refining furnace before, and there was no place to buy it for a while, even if he could sell it, it was impossible to buy it at once suitable enough, which made Ouyang Feng anxious.

Knowing Ouyang Feng's thoughts, the leader of the craftsmen smiled slightly, and said with some flattery: "Don't worry about this lord, when I came here before, several city lords were ready, and the alchemy furnace and refining furnace were ten each, all of which were stored in several city lords, and after we finished here, we could directly debug it." Ouyang Feng was overjoyed when he heard this, and turned his head to look at the three Gail who were meditating and pranayama, for the first time he felt that it was a little unbearable to fool and use them like this, and there was also an urge to tell the truth to the three of them, but Ouyang Feng knew that now was not the time. (To be continued......)