The next day, Lu Xiaobao practiced for a while, and while eating and recovering, he took the immortal bone research, thought for a moment, and said lightly: "Xiaoqiang, now, I have found a material that can embed immortal bones, do you want to give some advice?"

"You...... You can't! That's my bones...... Woo woo ...... "The pompous dog immediately cried, he actually wanted to scold, but he couldn't control his crying, which made him very depressed, depressed and ruthless, and wanted to cry even more. Pen | fun | pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ

"Forget it if you don't give advice, when I refine the long sword, I will definitely surprise you!" Lu Xiaobao took the bones and immediately ran to the hall to start preparing.

However, the pompous dog didn't believe that Lu Xiaobao had a way, he was very confident in his immortality, so he immediately followed, preparing to attack Lu Xiaobao.

"Little monk, you dare to hit my bones, there is no door!"

However, Lu Xiaobao is full of confidence, and in his more than ten years of iron-striking career, his biggest gain, in addition to reaching the limit of his body, is a deep understanding of the properties of various materials, and he has his own cognition of refining tools.

Generally, the traditional refining tool is to melt two or more materials and fuse them in a liquid state, so that various heaven and earth patterns are intertwined or even entangled, and give full play to their unique properties.

But Lu Xiaobao can't help but break his bones, this method is not feasible at all.

He thought very simply, that is, he tried to hammer and hammer the materials he needed forcibly into the bones, and if one hammer didn't work, he would have ten hammers, a hundred hammers, and a thousand hammers...... Until you hit it in!

Yesterday, thanks to Yun Feifei's kick, he thought of a second-order material called Nirvana Stone.

This material is very rare, it contains a small amount of space, and it is the companion of some materials, usually used to make space rings or other space treasures, but the space is too small, it is very chicken, and it is generally treated as impurities.

But for Lu Xiaobao, this material is just right.

Soon, just one day later, when the pompous dog saw that Lu Xiaobao really hammered and hammered the refined Nirvana Stone into the immortal bones, he was shocked: "This, this?"

"Of course, you look at the pile of rough materials next to it, each of them contains a variety of other impurities, their heaven and earth patterns and impurities of the heaven and earth patterns, in a long time, squeezed by various heaven and earth forces to become what they are now.

What I'm doing now is just speeding up the process of their initial formation! What's more, your Immortal Bone and Nirvana Stone still have the same spatial pattern, although I can't see it, but the Heaven and Earth Pattern of the same attribute must be compatible! As long as the Nirvana Stone opens the door to the Immortal Bone, you can add other materials!

Of course, this method is very stupid and slow, but it must work!" Lu Xiaobao said his thoughts as a matter of course.

"Oh my God!" the pompous dog was stunned for a while, and only said one word in a rare sentence.

"Hmm...... Yes, this is actually what God does!" Lu Xiaobao was very sure.

Then he carefully struck the hammer after hammer, not to shatter the Nirvana Stone with a hammer, nor to be too light to cause the embedding to be unbalanced or displaced. That's where the power comes in.

If someone else comes, even if he knows the method, he can't do it.

"The most ordinary is often the greatest!" Lu Xiaobao finally realized the deep meaning of this sentence, and also understood the power of thousands of tempers.

"Alas, my bones are not cold...... "The pompous dog is really sad this time.

"Ahem, don't worry, I'm ...... I will definitely take your bones to the heavens and the earth, devour the stars and devour the moon, and maybe I can also perform your heaven and earth magic in the future, Tiangu sweeps the tail!" Lu Xiaobao swore an oath.

Time passed, and after three days, he successfully punched enough Nirvana Stone into the Immortal Bone, but when he was about to punch into the diamond, the main material of the sword body, he was stuck, no matter how much force he used or how long he fought, he couldn't penetrate a little.

Then he changed to other materials, but it was the same.

"What's going on?" Lu Xiaobao frowned and thought.

"Haha, Xiaomi, you are really whimsical, you said that you haven't even taken the apprenticeship exam, and you want to deal with my immortal bones that have been cultivated for tens of thousands of years, you are too naïve, too cute!"

"Shut up!" Lu Xiaobao was in a very bad mood and continued to try to change materials.

Finally, five days later, after countless attempts, just when Lu Xiaobao's strong patience was about to be worn out, he finally found a material that could be fused into the immortal bone.

This is a kind of mortal iron, dark iron, because its heaven and earth patterns are too inclusive, basically all metallic materials have its existence, in the cultivation world, it is often disposed of as impurities.

After more than a month of preliminary training, this thing is the most in the haunted house hall at the moment.

Lu Xiaobao was also angry and threw some dark iron on the bones at random, and knocked two hammers, but he didn't expect to succeed in one time.

"The most ordinary is often the greatest!" Lu Xiaobao thought of this sentence again in excitement, and the more he thought about it, the more excited he became, and his experience became more profound.

In the past, the Nirvana Stone was used as a medium in order to use the spatial attribute to open the door of the Immortal Bone, so that other materials could be slowly integrated into the Void Stone in the tempering, and thus indirectly integrated into the Immortal Bone.

But whether it is the Nirvana Stone or the Immortal Bone, the spatial heaven and earth patterns in it are not something that a low-level monk like him can control, let alone any material that can be compatible.

However, this mortal iron can! This mortal iron can be said to be almost everywhere, and there are even many of them when the Nirvana Stone is refined.

Lu Xiaobao immediately thought that this could be used as a second medium!

He doesn't need to add much mortal iron to the immortal bone, even if it is only a little bit, this little bit of mortal iron's heaven and earth pattern can contain the sword body material, and it can also contain the Nirvana Stone, and then the Nirvana Stone can contain the Immortal Bone, in this way, a sword suitable for casting the Shadow Sword Duel will become!

Moreover, in the future, because of the existence of Fan Iron, because of its strong inclusiveness, it is also possible to add any other materials to it, as long as it does not exclude the main material, it can be continuously upgraded!

And because of the escort of the nine-layer space that does not dissolve bones, there will be no refining failure at all!

"This, this...... Didn't anyone in the cultivation world think of it?" Lu Xiaobao couldn't believe it.

According to his vision, as his cultivation improves, he obtains all kinds of materials to integrate into it, and constantly upgrades, and in the future, this sword can emit ice, fire, lightning, all kinds of spells, martial arts, and holy arts......

It's just never-ending!

But soon, he was relieved, and there was a large pile of such mortal iron in front of him, and just now, he only regarded it as an impurity.

If it weren't for the fact that he was now in a low realm, and he was lucky enough to obtain the Immortal Bone, and he insisted on refining his first weapon with the Immortal Bone, when his realm was a little higher, he would never have thought of using this mortal iron refining weapon!

There are countless materials in the cultivation world, whether it is hardness, toughness, or other characteristics, any kind of material is stronger than this mortal iron, who would think of refining it with this junk material!

"I am a mortal abandoned by God, and my cultivation is also a mortal's iron-striking technique, and now even weapons are made of mortal iron...... My life seems destined to be ordinary, but ...... Ordinary is great!"

Lu Xiaobao took a deep breath, endured the excitement in his heart, and began to forge his first weapon according to his plan.