Although sword refining is the only way to split Qingyun Mountain, Xiao Feng also has selfish intentions. Because whether it was the Cold Sun Golden Needle or the Heavenly Silk Cloth, they were all defense-oriented, and he didn't even have a decent offensive weapon in his hand.

For what the masters are like, Xiaofeng knows very well. In his opinion, if you encounter a strong enemy, you can only blindly defend and be beaten, and you have no power to fight back. In this way, I am afraid that there is only a rush to escape.

Although Shennongzi often taught Xiaofeng to have a benevolent heart and not to kill easily, he himself did not like force and killing.

But along the way, the world is full of strength and weakness and killing, and he knows that as a doctor, he must first guarantee his own life, and then he can talk about saving people!

What's more, he still has more important things to do, and I don't know how many dangers and obstacles he still has to encounter. If you don't have a decent weapon in your hand, I'm afraid it will be very difficult.

At this time, looking at the big black stone in front of him, Xiao Feng became more and more determined in his heart!

"Bluebird, do you remember this meteorite? It's an extremely rare sword-forging material, so I'm going to use it to forge an indestructible sword!"

"But it's all up to you!"

With a smile, Xiao Feng let out his spiritual power, and poured black stones into his hands to slowly pick it up.

Although the weight of the black stone is amazing, Xiao Feng is different from the past, and he has cultivated to the realm of the late stage of the spirit, so with his strong spiritual power, he placed the black stone on the top of the Void Dingjiao.

In this way, the main reason is to save the loss of physical strength, otherwise, if it has been suspended on the tripod with spiritual power, ten small winds will not be enough.

At this time, the black stone looks like a mountain, just like this, hanging quietly on the big ding.

Although the blue bird could not speak, and his intelligence was not high, after the black stone was placed, a fire was ignited again in the Hexu Ding, and the fire went straight to the sky.

"Bluebird, concentrate your fire in one place and melt this stone!"

Hearing this, the blue bird concentrated all his fire under the black stone. Seeing that the blue bird was so cooperative, Xiaofeng was happy.

Because he knows that this sword-casting is not as good as alchemy, and the requirements for firepower are not strict, especially in the melting of sword-casting materials, what is needed is strong firepower, the more powerful the better!

This is especially true for Blackstone, because of its extraordinary texture!

In Xiaofeng's opinion, if you want to forge it into a sword, the first step is to melt it and get rid of the excess impurities. This is followed by repeated calcination to maximize its hardness and density.

Because only in this way can the weight of the sword being refined be preserved, and at the same time its volume can be reduced.

"Bluebird, increase the firepower, let me see what this black stone is made of!"

The spiritual power was full of Heavenly Pivot Ding and the mysterious black stone, and Xiao Feng found that although it was under the blue bird fire, it did not change in the slightest. So, he shouted loudly.

As the words fell, Xiao Feng only felt that the temperature in Dingzhong was several times higher in an instant, and the firepower was even hotter, like the fire of the sun.

Under such a fierce fire, after a cup of tea, he found that the bottom layer of the black stone finally melted again little by little.

"Well done!" Xiaofeng couldn't help but sigh with joy.

He knew very well what material this meteorite was made of, and how hard it was!

"Bluebird! the rocks are starting to melt, keep the fire to the maximum!"

While releasing spiritual power and feeling the changes of the fall, Xiao Feng recalled in his mind all kinds of attention points about sword casting.

In addition to being an extraordinary physician and cultivator, Shennongzi is also a master of sword casting.

When he was in the bamboo sea, Xiao Feng, who had already had the idea of forging a sword, naturally asked his master for advice.

But Shennongzi didn't say much, just threw him a bunch of books. Later, after reading these books carefully, Xiao Feng realized that they were all about how to forge swords, and there were many experiences of sword forging masters.

Although he has never forged a sword, Xiao Feng thinks that he has mastered all kinds of sword casting, and as a doctor, he has a lot in common with alchemy, so he dares to try to refine and forge a sword.

"According to what is said in the book, half of the quality of forging a sword lies in the material of the sword, and half in the sword spirit!"

The spirit of the sword, like a spiritual thing, is the spirituality of the sword. It is not the soul of the sword, because the sword has no soul.

Xiao Feng still remembered that when the sword was cast, a large amount of cosmic essence was gathered, and the better the sword, the more essence it would attract and absorb all of it into the sword body.

In order to make the sword more spiritual, the swordsmith will also bury the freshly cast sword deep underground, and let it absorb more of the essence of heaven and earth after years, decades, or even hundreds of years, and only take it when its spirituality increases to the maximum.

Just as Xiaofeng was recalling, time passed quietly for about an hour. At this time, looking at the meteorite, its outer layer has completely melted.

"At this rate, it will only take more than ten days for the entire meteorite to be refined. ”

"If you count the time taken to calcinate repeatedly, it won't take more than a month for the sword to be cast!"

However, two hours later, Xiaofeng's heart dimmed. Because he found that the soft layer was just beginning to melt, which was greatly unexpected to him.

Because in his opinion, it is right to spend less time, but he does not want the situation to be the opposite.

But in any case, even if it takes a lot of time, it can melt at a good time, which is far better than no way at all.

For now, the most light wind is time, which is completely negligible!

However, what worries him the most is the firepower.

Because the flames are all released, they are completely out of his control, if the blue bird can't support it, then no matter how much Xiaofeng insists, it doesn't make any sense.

Because judging from the current situation, he doesn't know when he will be able to become a sword.

Maybe years, maybe longer. For such a long period of time, it is also necessary to have constant firepower.

In this way, it is a big question mark whether the blue bird can hold on

"Looking at this situation, I can only take one step at a time, but I can't do it, so I have to choose to give up!"

"If the fire lasts for a long time, I am afraid that only the fire of the sun is the fire!"

"Blue Bird, I'm afraid it will take a long time to melt the meteorite, so if it really doesn't work, stop!"

Although everything was fine with the blue bird at this time, Xiaofeng didn't want it to be overconsumed or damaged.

If that's the case, then stealing chickens won't make it a mess!

"It's a pity, with my current strength, I can't find Dading and subdue it. ”

Thinking of this, Xiao Feng had no choice but to devote all his thoughts to refining.

He repeatedly calcined the molten meteorite liquid to transfer the impurities out of it. But there is very little debris in it, and even if there is, it is very fine particles.

However, as time passed, Xiaofeng's original worried heart relaxed. Because a full thirteen days have passed, the flames in the Hexu Ding are still stable, and the blue bird seems to be like the fire of the sun on the green clouds, constantly spitting out firepower.

Although he was happy, after a month, he already clearly felt that Dingzhong's firepower was gradually decreasing.