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Soon, Ou Yezi took Lu Feng to a position a little behind here.

There are mountain walls made of iron and stone, but between them, you can find some dark water flowing and it looks very beautiful.

Ou Yezi pointed to the dark water flowing in the mountain wall, and said: "Your Majesty, these dark water flows are called fine iron stone cores, and it is rumored that they are good treasures that will be formed after some coincidences after the refined iron stone mine reaches a little year!"

"Iron-hearted?"

Lu Feng was a little puzzled, he had never heard of it.

Ou Yezi saw Lu Feng's doubts and explained: "Many years ago, there were rumors that if you put a heaven-level top-grade divine weapon in the heart of fine iron and stone, if there is a change within a quarter of an hour, you may directly become a saint-level divine weapon!"

"Even if there is no change, the heaven-level high-grade divine weapon will add some power, which is very precious!"

"Moreover, the refined iron stone heart is not only able to give a heaven-level high-grade divine soldier a chance to become a saint-level divine weapon, but also can refine a saint-level divine weapon alone, and this kind of separately refined saint-level divine weapon is rumored to have the potential to become an artifact, which is extremely precious!"

"If they are in the imperial dynasty, they will know about it, and they will definitely come to rob it at all costs!"

Ou Yezi's words were very certain, but Lu Feng did not doubt him at all.

Because artifacts are very, very precious, there aren't necessarily many in the world.

And what kind of weapon can be called an artifact?

Only weapons that surpass the god-level superior can be called artifacts!

And god-level weapons are already very rare, let alone artifacts that surpass god-level top-grade weapons.

The degree of preciousness can be imagined.

It's no wonder that Ou Yezi is so fond of Jingtie Shixin.

But......

Lu Feng looked at the dark water flowing inside the fine iron stone mountain wall, and had some doubts in his heart, this can really make a heaven-level high-grade divine soldier become a saint-level divine soldier?

With a slight groan, he threw a probe at it.

Soon, the information from the exploration technique came back.

Refined Iron and Stone Heart: There is a chance to promote a heaven-level high-grade divine weapon to a saint-level divine weapon, and a weapon that is successfully refined alone has the potential to become an artifact, and can be exchanged for 30 million experience points.

Grade: Holy Grade.

The information fed back by the exploration technique is basically the same as what Ou Yezi said, that is, you can exchange 30 million experience points for more.

Looking at the refined iron and stone heart inside the mountain wall, Lu Feng sighed lightly and said, "I really can't imagine that looking at just a weird dark black water flow can have such an effect!"

Just letting a heaven-level high-grade divine soldier advance to a saint-level divine soldier is already very, very precious.

Not to mention, a divine weapon that is individually refined with a refined iron and stone heart has the potential to become an artifact.

You must know that Lu Feng has a refining master like Ou Yezi in his hands, although the current level is still the top grade of the ground level, but the original level is the god level, when his refining level is restored, and he uses this refined iron and stone heart to refine the divine weapon, it is really possible to directly become an artifact!

In comparison, exchanging 30 million XP points seems a bit pointless.

Although 30 million experience points is a lot, if it is compared with saint-level divine weapons and artifacts, it is not far from ordinary.

"Your Majesty, the sword you have should be a heaven-level top-grade divine weapon, why don't you try it and see if you can become a saint-level divine soldier?" Ou Yezi said to Lu Feng at this time.

Lu Feng's eyes lit up suddenly, yes, how could he forget this.

The cadre sword in his hand, and the Mo Evil Sword in the hand of Queen Hua Mulan are all heaven-level high-grade divine soldiers, if they can all become saint-level divine soldiers, the power will definitely increase a lot.

There is also the Chengying Sword that he summoned before and gave to Jia Xu, which is also a heaven-level high-grade divine soldier, if it becomes a saint-level divine soldier, wouldn't it be beautiful?

As soon as his hand moved, the sword appeared in his hand, and Lu Feng asked Ou Yezi, "What should I do?"

"Your Majesty handed it over to me. ”

Ou Yezi took the sword, held it with both hands, and stabbed it into the mountain wall of fine iron stone.

The iron stone mountain wall, which should have been very hard, was easily pierced into it, and there was no damage visible on the mountain wall.

Lu Feng looked a little strange, and when he was about to ask, Ou Yezi had already explained: "Your Majesty, this fine iron stone mountain wall looks hard because of the fine iron stone heart inside, but in fact it is very fragile, but it has a certain recovery ability, and the divine soldier pierces into it, and it will not leave any traces." ”

"Oh, and that?" Lu Feng was a little surprised, and said, "I didn't expect this!"

At this time, the Ganjiang Sword pierced into the mountain wall, and the iron and stone core of the dark black water flowed as if it was attracted, covering the sword body of the Ganjiang Sword.

The blade of the cadre's sword suddenly flashed with a dark black light, and at the same time trembled slightly.

"There's a change!"

Ou Yezi was overjoyed when he saw it, and said: "Your Majesty, the cadre sword has changed as soon as it comes into contact with the refined iron and stone heart, and it will definitely be able to become a saint-level divine soldier!"

When Lu Feng saw it, a smile appeared on his face, several swords had really become saint-level divine soldiers, and his combat effectiveness would be improved a lot!

Don't look at the difference between the heaven-level high-grade divine soldiers and the saint-level divine weapons is only a small level, in fact, the difference is no less than that of the heavens and the earth.

Lu Feng was very much looking forward to what kind of surprise the Cadre Sword would be able to bring to himself after becoming a saint-level divine soldier.

Time passed slowly, and half an hour had passed soon after the Gan Sword pierced into the fine iron stone mountain wall.

"Buzz. ”

In the body of the sword, there was a buzzing sound, and a mysterious fluctuation appeared on the sword.

"Boom!"

In the next moment, a crisp sword roar resounded.

The sword of the cadre suddenly fell off from the fine iron stone mountain wall and stood in the void, and a fierce sword aura covered the sword body.

The air around is scratched!

When Lu Feng saw it, his hand moved, and the sword fell into his hand.

Looking at the sword body again, there is no change in style from before, but in the middle of the sword body, there is a dark black line.

On the blade of the sword, the sharp aura seemed to have added three points.

Lu Feng directly threw a probing technique up.

Under the exploration technique, the information was immediately fed back to Lu Feng's mind.

Cadre Sword: Named the beloved sword with the Mo Evil Sword, it is a masterpiece of ancient Chinese swordsmiths.

Grade: Holy Grade!

Incidental Martial Arts: Twins (When combined with the Mo Evil Sword, it can increase the user's three small realms, and the power of all sword tricks will be tripled.) ）

Comes with a supernatural power: Broken Blade (Heaven-level high-grade supernatural power, when cast, it can stimulate an incomplete Broken Blade Sword Qi, which is extremely powerful.) ）

Restrictions: The martial arts twins are performing, and the difference in level between the owner of the Cadre Sword and the owner of the Mo Evil Sword shall not exceed five small realms!