Sun Ang and the five people hurriedly followed, the cave could only accommodate one person to walk into, but after entering dozens of zhang, the inside suddenly became wider, and there were forked holes leading to different places. And Sun Yi's voice came from inside, guiding them: "You don't need to distinguish the road, no matter which way you go, you can finally gather together." ”

Everyone tried it, and sure enough, it was a huge nest, and the Escape Centipede had dug through every cave, and there were hundreds of holes outside, just so that the Escape Centipede could fly out of the cave at the same time.

The lair was still full of poisonous gas, but it could not bother the six. They reached the deepest part of the lair, and Sun Yi was already standing there in a daze.

It is a huge cave like a patio, like a huge cylinder that goes straight up and down, as high as 10,000 zhang, with a diameter of more than 3,000 zhang, and on the top of the cave, there is a hole about the size of a hundred zhang, and a faint light leaks from above.

Caves are scattered on the walls of this huge cave.

Sun Ang and they came out of these holes, Sun Yi had already raised his hand, like a torch holding a Yuan Breath fire, he continued to inject Yuan Breath, and the fire was blazing, illuminating the entire cave.

In the center of the huge cave, shrouded in the faint light that leaked from the top, a huge innate iron embryo grew out from under the ground.

This innate iron embryo is like an ancient tree, as high as 3,000 zhang, 400 zhang thick, the surface is mottled rust like dead bark, if it is not for the lack of branches and leaves, it is really easy to be seen as a huge ancient tree at a glance.

In the innate iron embryo, a pure metal breath escapes, and it is full of vitality. It's as if it has a life of its own.

Sun Yi looked back at everyone and grinned, "I don't know what this thing is, but I think it should be a heavy treasure, right?"

Sun Ang flew up in the air, slowly circled around the innate iron embryo, and then said with a smile: "Sun Yi, you are really a lucky general." ”

Sun Yi was proud: "Then it needs to be said." Young Master Ben is blessed with all the heavens!"

Sun Jian pouted: "If you say you're fat, you'll gasp." ”

Everyone laughed secretly, and Sun Yi said angrily: "I don't believe that the two of us will compete with each other! The next time you find something, you go in first, and I'll see what you can gain." ”

Sun Jian was not convinced: "Compare to compare, hehe!"

Sun Ang looked at everyone and said, "I have this thing useful." Sun Yi waved his hand nonchalantly: "You go, you still need to say more." ”

Sun Jian Sun Tang also nodded: "You don't have to be so polite. Of course, Yu Peilan and Qiu Yirui would not have an opinion, Sun Ang nodded, his heart was warm, and said, "You still have to help me protect the Fa." ”

Sun Yi smiled: "No wonder you are so polite. It turned out that we were still to be coolies. ”

Sun Ang feigned anger: "Go and be on guard." ”

"Hahaha!" The five of them scattered, each holding a position. And Sun Ang floated in the air, standing in front of this huge innate iron tire, but he was a little apprehensive in his heart, although he was now a seventh-order creator, he was not sure if he wanted to refine this behemoth.

But this thing is absolutely precious, too large to carry, and it can't be left here in vain. Sun Ang had to take a risk.

If successful. It will be a big help for him, and the next Dead Territory will be a lot easier.

This kind of congenital iron tire is not easy to determine what grade it is. It is said that innate things are extremely precious, and they are very rare in the Seven Realms of the Dark Sea today. As long as it is stained with the word "innate". It must be the ninth order.

However, because this thing is naturally grown, if it is too small, even if it is a ninth-order, it will not be able to be used. And the strain in front of Sun Ang is already so huge. It must have already surpassed the ninth order, so it's hard to determine what level of material it is.

Sun Ang didn't have to try, he knew that even if it was just this thick layer of rusty shell on the outside. I'm afraid that the hardness also exceeds that of ordinary eighth-order divine weapons, and it is not easy to break.

He sighed secretly: No wonder the undead are extremely dangerous to explore, but everyone is extremely enthusiastic, this is only the first danger, and in the area that has been explored, there is such a huge harvest!

He took a deep breath, suppressed all the distractions in his mind, and spread his hands, the various knowledge of the creator crossed his mind, like a bright meteor shower in the dark sea, and he chose the method that he thought he had the greatest grasp.

Boom -

The Dragon of Primal Breath rushed out of its body, spewing out flames one after another, and the flames rose like a tide, enveloping the entire innate iron tire. The thick rusty shell on the skin slowly turned red and seemed to begin to soften.

But the whole process is extremely slow.

At this time, Sun Ang already had nine Fire Energy Primal Breath Dragons, and he released them all in one go. These nine dragons of primordial breath carried almost all the fire energy primordial breath in his body.

The nine dragons of the Yuan Breath transformed into a real huge fire dragon, thousands of zhang long, and after flying around the huge innate iron tire for a while, all of them rose to a height of four thousand zhang, opening their mouths and spitting out a large amount of flames from the sky.

Nine fire dragons, spitting out nine flame waterfalls.

Outside the entire innate iron tire, a huge fire shroud was shrouded. Sun Ang felt powerless, so he immediately swallowed the elixir, and at the same time rummaged through his storage space, taking out all the treasures related to fire energy in it to supplement his lack of strength.

Qiu Yirui and the others held their respective positions, feeling the huge heat behind them wave after wave, and couldn't help but look back, and couldn't help but change color together.

Although they had never observed Sun Ang's creation, such a huge battle must have been Sun Ang's all-out effort, even beyond the limit of Sun Ang's ability!

It seems that this thing is indeed a great treasure, which makes Sun Ang so difficult.

Sun Ang sweated on his forehead, and forcibly held on for a full hour, and finally felt that the hard rusty shell on the outside of the innate iron tire had finally softened. He perked up as three dragons of primal breath flew out above his head.

Unlike the previous nine, these three are "Thunder Dragons". The Qianzhang Thunder Dragon's body shone with a bright blue light, much faster than the fire dragon, and it swooped to the top of its head, and then the three thunder dragons opened their mouths together, and with a click, a thick thunder light split out of the dragon's mouth.

However, the target of these three thunder rays was not the innate iron tire, but converged to a point from three directions, and the sky above the innate iron tire was thousands of feet high, condensing into a bright thunderball that people couldn't look at directly.

The three thunder dragons were still desperately injecting thunder energy into the thunderball, and after a meal, the thunderball had become extremely unstable, trembling slightly, driving the surrounding space to slowly begin to distort, and the sight became unreal.

By this time, it seemed that the strength of the three thunder dragons was also going to be exhausted and they had become languishing.

The thunderball violently turned into a thunderbolt, and from top to bottom, it chiseled through the entire innate iron tire with a click. A blue thunder net instantly filled the entire rusty shell, and then a series of explosions cracked, and the thick rusty shell was completely shattered, falling off piece by piece.

Patches of pure silver light leaked from the rusty shell that fell, the purest metal inside the innate iron tire—a metal that was in a state of innate chaos and could be converted into any precious metal in the world, even the rarest of the world, with proper guidance.

But Sun Ang doesn't plan to change it.

When all the rusty shells were completely removed, the congenital iron tire was much shorter, only 2,000 zhang long and 600 zhang thick.

In the air, the fire dragon and the thunder dragon were still violently spitting out their own energy, this was not for refining, the innate metal did not need to be refined at all, and could be used at will. The reason why Sun Ang still did this was to use these powers to imprint his "breath" on the innate metal, after all, these powers were all transformed by his Yuan Breath.

This step is even longer, although it does not require very strong force, but it is necessary to infect the entire innate metal. Sun Ang gritted his teeth and insisted, the elixir and treasures that could help him at hand became less and less as he continued to consume, Sun Ang's whole body was already soaked with sweat, and then dried by his own firepower, and then soaked again, repeating it more than a dozen times.

He insisted silently and had great endurance. The Immortal Emperor's heart demon was once again unconsciously activated, and his "greed" for innate metals made him persist all the time.

The mysterious Tai Chi slowly turned, and it seemed to give him infinite strength.

Unconsciously, another three hours passed, and Sun Ang felt that this huge innate iron tire was his own—his breath had been completely imprinted in it.

So, he finally began to start the last step: the Jiuyang Sword Spirit flew out.

Sou!

The Jiuyang Sword Spirit turned into an extremely thin filament, accompanied by a thunderbolt, and drilled into the interior of the Innate Iron Tire, entrenched in the core position, and began to merge with the entire Innate Iron Tire.

Jiuyang Sword Spirit trembled slightly, and the innate iron tire outside did not have a trace of resistance, and took the initiative to fuse!

Sun Ang breathed a sigh of relief, knowing that he had judged correctly.

This is the benefit of congenital iron tires. The grade of this material is too high, and with Sun Ang's current level, it cannot be refined. But it will actively fuse, as long as Sun Ang opens the rusty shell that is closed outside.

The Jiuyang Sword Spirit swelled up rapidly.

This divine weapon was originally an eighth-order, but in the battle of Dark Sleep City, after fusing a thunderbolt blow of a primordial dragon, the material was damaged and fell to the seventh order.

Now with the world's purest innate metal element supplement, the level has increased rapidly. The originally damaged part was quickly replaced, and the innate metal element was frantically injected into the Jiuyang Sword Spirit.

This huge innate iron tire shrank rapidly at a speed that could be seen by the naked eye, and in the Jiuyang Sword Spirit, pieces of residue-like substances were constantly discharged, and under the tempering of Sun Ang's flames and thunder, these residues turned into green smoke.

However, the volume of the Jiuyang Sword Spirit did not change significantly, and after the two were fused, the innate iron tire became a part of the Jiuyang Sword Spirit.

Finally, the huge innate iron tire was completely fused into the Jiuyang Sword Spirit, and this divine weapon turned into a burning fireball again, looking like a small sun hanging overhead. (To be continued......)