It took a whole day, the dragon soul was busy in front of the demon refining tripod, and during this day, he did not start refining weapons, but made previous preparations, and refined all the materials needed first, especially the main material black crystal iron, which not only smelted dozens of tons of black crystal iron ore into a ton of black crystal iron. Pen, fun, and www.biquge.info

Moreover, the ton of black crystal iron was refined into a small piece as long as a broom stick, and with these metal preparation materials, the dragon soul could finally start refining Cheng Tianang's new weapon.

"Okay, Tianang, the preparation materials are almost done, now I will start refining, do you want to observe it together?"

After the dragon soul prepared all those materials, he said a word to Cheng Tianang, and Cheng Tianang had already stood aside to rest at this time, and when he heard the words of the dragon soul, he immediately walked over to him, and then replied with great interest: "Okay, I also want to take a look." ”

Soon, the dragon soul suddenly made the demon refining tripod bigger, and with a bang, the demon refining tripod fell to the ground, and then the top cover flew up, absorbing all those materials, and thousands of catties of metal were thrown into the demon refining tripod at this time.

"That's right, Tianang, you remember that your fire crow transformation can release the flame essence fire of that day, quick, get some, the flame essence fire of that day is originally a fierce and domineering flame, if you use it to refine black crystal iron, you will definitely be able to make that black crystal iron more brittle, and his sharpness should be better than three points." ”

After the dragon soul threw all those materials into the demon refining tripod, he remembered something and said something to Cheng Tianang.

"Hey, can my Sun Flame Essence Fire help you?"

As soon as Cheng Tianang heard the words of the dragon soul, he naturally didn't dare to ask anything, but immediately used his fire crow transformation, and then with a big mouth, a sun flame essence fire erupted from his body, and it sprayed towards the demon refining tripod at once.

The whirring flames fell in the Demon Refining Ding, and the flames burned brightly, and it only took a moment to burn the metal red.

"Very good, the Sun Flame Essence Fire is worthy of the flame of the most rigid and yang, this is just a little contact, those metals have been burned red, I am afraid that it will not be long before these metals can be dissolved, and after I turn these metals into liquids, after fusing them and pouring them into the abrasive, I can make a rough model of your new weapon." ”

After spending some time, the dragon soul burned all the metals into liquid, and the hot metal liquid was like magma, rolling in the demon refining ding, and as the dragon soul took out a weapon grinding tool that had been discussed with Cheng Tianang before, and poured all those liquids into the mold, Cheng Tianang's weapon prototype was also considered to have come out.

Ziz!

The dragon soul quickly poured the black crystal iron that had been formed in the mold into the liquid that had been prepared long ago.

"This is quenching, that is, the hot metal liquid that has been burned is soaked in water, and then quickly cooled to achieve the effect of quenching the strength of the weapon, the liquid of this quenching weapon is also particular, generally speaking, it is okay to use ordinary water, but some refiners will use other liquids, such as the five elements of spiritual liquid, the weapons quenched by different liquids have different characteristics, your weapon should be sharp, so I will directly use ordinary water to help you quench, but this water is also mixed with some metallic elements, which can make your weapon stronger。 ”

While taking out Cheng Tianang's new weapon and quenching it, the dragon soul explained to Cheng Tianang the role of each step, Cheng Tianang was also excited to see the movements of the dragon soul and listen to his explanation.

"After the quenching is over, it is tempered, and generally only one quenching weapon is particularly brittle, that is, very hard, but it is relatively easy to break, because it is too brittle, quenching increases his hardness, but it is not tough. Therefore, the purpose of backfire is to increase the toughness of this weapon. ”

The dragon soul fished out the prototype of the weapon that had been cooled down from the water again, and then threw it into the demon refining tripod again, incinerated it, and when the prototype of the weapon was burned red, it was thrown into the quenching water again for quenching, and after repeating this several times, Cheng Tianang saw that the dragon soul did not continue.

"After almost three or five times, the toughness of the weapon will be greatly improved, and then annealing and shaping, annealing is to completely cool down the weapon to reach an ordinary temperature, in this way, even if it is done, as long as he cools it down, it will be a semi-finished weapon, and then make it sharper, and the whole process will be over. ”

After the dragon soul finished the last tempering, the toughness of the entire weapon was greatly improved, and then it was sharpened with a big hammer, and the entire process of refining the weapon was over.

Soon, what appeared in front of Cheng Tianang's eyes was a pitch-black long knife, there was no superfluous structure in the scene, it was completely a long knife made of black crystal iron, and it was still glowing with light, the cold light was shining, and the lines on the blade were formed overnight, forming in one piece, which looked extremely dazzling.

"Here, try it out, see if your new weapon is going to be easy or not!"

The dragon soul threw the long knife that had been built to Cheng Tianang, although the long knife did not take long to build, but Cheng Tianang seemed to like this long knife more and more.

Cheng Tianang's face showed a hint of a smile, excited, caught the long knife, and then danced a few times, only then did it slash and fall to the ground, marking a huge pit on the ground.

"Amazing, such a sharp long knife, much sharper than my previous purple gold long knife, I'm afraid that this level of sharpness, killing an eighth-order fierce beast is not a problem at all, even if it is a ninth-order fierce beast, it is not impossible to fight!"

Cheng Tianang only waved the long knife a few times, and he was extremely satisfied, and a smile appeared on his face.

"Hehe, let's give him a new name. The dragon soul stood aside and said to Cheng Tianang.

"Well, it should be, since it is a weapon made of black crystal iron, then I will call him the black crystal battle knife, although it is simple, it is very in line with the meaning of this long knife. ”

Cheng Tianang didn't bother to think about anything, so he directly named his new weapon after Black Crystal Iron.