Qingyang had considered this before coming, and the legend has it that there will be more or less associated heavenly and earthly treasures in the thunder pool, and the thunder and lightning here are so powerful, there may be good things at the bottom of the pool. Seeing that the bottom of the pit was bare just now, Qingyang was still a little disappointed, and now he knew that the good thing was blocked by the iron-eating beast, and the value of this spiritual wood at the bottom of the pit would definitely not be much worse than the dragon horn root he got in the Jiaolong ruins many years ago, and it might even be a treasure of the same level.

At the beginning, Qingyang had heard the ancestor of the Zhou family say that the dragon horn root is the spiritual root of heaven and earth, and it is the main material used to refine the Heaven Replenishing Pill, if this is also a treasure of the same level as the spirit wood, it is likely to be a kind of heaven and earth spirit root, and the dragon horn root is the wind attribute, this spirit wood grows in the thunder pool, and contains terrifying thunder attribute energy, it must be the thunder attribute, that is to say, if you get him, you will have two kinds of heaven and earth spirit roots, and you can refine the two-color Heaven Replenishing Pill.

The Heavenly Pill is used to replenish the spiritual root of the monk, and the more spiritual roots of the Jindan monk, the more complete the Yuan Infant will be, and the stronger the strength of the monk will be after breaking through the Yuan Infant. Originally, the Qingyang Five Elements Spiritual Root was much more powerful than other monks, if he could make up for the two kinds of Spirit Roots of Wind and Thunder, then it would be easier for him to break through the Yuan Infant, and the Yuan Infant he formed would be more complete, and his strength would be stronger in the future.

For low-level cultivators, the more spiritual roots, the more difficult it is to cultivate, and the multi-spiritual root cultivators who can cultivate to the consummation of the golden pill can be described as rare, the spiritual roots of heaven and earth are so rare, and it is even more difficult to make up for the spiritual roots the day after tomorrow, there are almost no five spiritual root cultivators like Qingyang, let alone the seven spiritual root monks, once Qingyang becomes a primordial infant, what a terrifying existence it should be?

Before, Qingyang chased and killed this iron-eating beast, just for the corpse of the iron-eating beast to be worth some dark stones, and he didn't have the intention to win, if the price to pay to kill the iron-eating beast was too great, Qingyang was likely to give up, but now with this spiritual tree at the bottom of the pit, Qingyang has changed his mind, and he will not give up this time, even if he pays a big price.

In fact, Qingyang didn't know that this spirit tree was not only useful for monks, but also very useful for demon beasts and demonic beasts, the reason why the iron-eating beast kept the spirit wood until now was not that he didn't need it, but that he was reluctant, the iron-eating beast was now at the peak of the ninth order, and it was not far from breaking through.

It's just that it is very difficult for demon beasts and demonic beasts to advance, and the iron-eating beast has not yet been sure of it, his original plan was to keep this heaven and earth spirit root, and wait until the critical moment of breakthrough to use it, with the help of the huge energy obtained when refining this heaven and earth spirit root, maybe he can advance successfully.

As a result, he didn't expect that when he went out today, he encountered a hard stubble, not only did he not hunt food, but he was chased to the lair by the other party, which was also exposed by the spiritual root of heaven and earth that he had guarded for countless years.

The Iron Eater had no choice but to fight hard, and Qingyang also made up his mind at this moment, seeing that the Iron Eater Beast had rushed in, and the distance between the two sides was less than ten zhang, Qingyang hurriedly sacrificed the Five Elements Sword Formation.

Qingyang seemed to have forgotten that he still had to resist the thunder and lightning that was constantly released by the thunder pool, and his five giant swords had just received a thunderbolt energy, and before he could release it, he could only use that thunder and lightning energy to forcibly cast the Five Elements Sword Formation and kill the iron-eating beast that was rushing in.

Qingyang responded in a hurry, and the iron-eating beast was carried away by hatred in order to protect his treasure, and he didn't notice the difference between the Five Elements Sword Formation this time and the one he had used outside before, and in the blink of an eye, the two sides collided together, and with a loud bang, the entire cave shook.

Such a big movement, if it was an ordinary cave, it would have collapsed a long time ago, but fortunately, the entire Wanfeng Mountain was made of metallic materials, and after countless years of solidification, it was difficult to destroy the general impact, and the cave only shook a few times, shaking up layers of sand and gravel dust, and did not collapse.

The huge impact pushed Qingyang back several steps in a row before he stood firm, at the same time, his face turned pale, and he felt a tingling pain in his divine thoughts, not because the Five Elements Sword Formation was broken, but because the five giant swords contained thunder and lightning energy, which was already a little overloaded, and then Qingyang forcibly cast the Five Elements Sword Formation, under the double pressure, the magic weapon sword body was slightly damaged, the natal magic weapon was connected to the monk's mind, the magic weapon was damaged, and the divine mind was also affected.

In fact, Qingyang had expected this a long time ago, but the situation was urgent at that time, and it had to be done, as for the damage to the magic weapon, it could only be slowly recuperated after going back, and it would be able to recover in three or five months.

Qingyang paid such a big price, the iron-eating beast was naturally no better, and at the same time that Qingyang retreated, the iron-eating beast also screamed and rolled out, and fell to the bottom of the pit with a snap.

At this time, look at the iron-eating beast, although the scales are still complete, but the position on the back that had been injured by Qingyang, there was a palm-sized wound, which was black inside, constantly oozing black blood, and the iron-eating beast was sluggish, and it seemed that it was seriously injured.

Qingyang didn't expect that the power of this move of the Five Elements Sword Formation was so great that it almost cost half of the life of the Iron Eater Beast, according to this situation, at most two more times would be able to solve the battle.

In fact, this is very normal, the iron-eating beast has lived in the thunder pool for a long time, and has adapted to the lightning strikes in the thunder pool, if it is just thunder and lightning, it is not only harmless to the iron-eating beast, but also can enhance the strength of the iron-eating beast, repair the damage suffered by his body, it is a great supplement.

But thunder and lightning are destructive after all, once combined with Qingyang's Five Elements Sword Formation, it exceeds the ability of the Iron Eater Beast, then there is only damage and no benefit, just like a person eating, eating in moderation is a good thing, if you eat too much, you may be bursting your belly.

The power of the Five Elements Sword Array, which contains thunder and lightning energy, multiplies in power, one attack makes the Iron Eater lose its defense, and one attack makes the Iron Eater Beast's body suffer heavy damage, and there is such a result, Qingyang didn't expect it, and the Iron Eater Beast didn't expect this result.

Of course, although this method is powerful, the damage to the magic weapon is not small, after using it, it will take energy to repair and recuperate the magic weapon, and if it can be avoided in the future, it should be used as little as possible, so as not to cause greater damage to its own natal magic weapon, fortunately, the iron-eating beast has been hit hard, and now Qingyang is sure to defeat even if he does not use the Five Elements Sword Formation.

Perhaps affected by the battle just now, the thunder pool also fell into a stagnation at that moment, and no new thunder and lightning were produced for a long time, but after a while, the thunder pool seemed to recover, and gradually there were thunderbolts brewing in the deep pit, Qingyang couldn't care about the iron-eating beast at the bottom of the pit, so he could only sacrifice five giant swords to resist the thunder and lightning that attacked him.