"Buzz ......"

After Niu Er withdrew, the voice still echoed in the room. It took a long time to stop, and after stopping, the iron flat pole was really promoted to the best innate magic weapon.

"Awesome, admire, admire!"

Du Feng saw it clearly, and the most important thing was the trembling beating technique at the end. No matter how much crystallized salt was used in the front, it would not be possible to make the weapon advance without the final high-frequency knock tremor. The last one has the effect of putting the finishing touch.

"Don't laugh at me, you just learned it. ”

Niu Er only demonstrated it once, but he felt that with Du Feng's talent, he should be able to learn it. Because the process is not complicated, and people have even forged immortal weapons, it is impossible not to learn their own opportunistic method.

"Well, I think I've learned. ”

Well, Du Feng is blind and modest again. He has not only learned, but has already remembered it in his heart. I remember clearly how many hammers Niu Er knocked in total, what angle, what strength and what feeling each hammer went down.

"Okay, then you can do it yourself. ”

Niu Er threw the place out and let Du Feng operate it himself. What he wants to be promoted this time is, of course, to take the dragon sword. Du Feng also thought so, so he simply started the operation himself.

"Master, I don't need that. You grind the crystallized salt into powder, and I'll devour some. ”

Don't forget that there are swordsmen in the dragon sword, and swordsmen are wise. After observing for a while, he realized that he didn't need to go into the furnace and toss around. Because the processes of calcination, beating, cold brewing, etc., are nothing more than the uniform mixing of crystalline salt powder into the weapon.

But for the swordsman, he only needs to devour it directly. Make it into powder first, which is nothing more than easier to digest and absorb.

"This ...... That's the problem!"

Du Feng was really embarrassed, and he couldn't use it after studying for a long time. If you knew this earlier, you could just get some crystalline salt and grind it into powder, and then absorb it for the Dragon Sword. Of course, learning is not in vain, because he can upgrade other weapons. Upgrade a batch of weapons and throw them into the Red Gourd to create a new batch of Blood-Breaking Swords.

The swordsman helped to estimate that it would take about ten crystalline salts to upgrade the Chenglong Sword from a medium-grade innate magic weapon to a high-grade innate magic weapon. The reason why the number used is small is that the size of the sword is smaller than that of the flat shoulder. In addition, the method of devouring the crystalline salt powder of the swordsman is more efficient than the beating method, and basically does not cause waste.

Whether it is the crystalline salt powder or the original Gengyuan, to the greatest extent, it can promote the Dragon Sword to the best innate magic weapon. After reaching this level, even if you devour more crystalline salt and Gengyuan, you will not be able to advance again. To put it bluntly, these two materials can't turn the Dragon Sword into an immortal weapon.

"Okay, I got it. ”

After Du Feng finished chatting with the swordsman, it was already completely clear. Ten crystalline salts are needed to promote the Chenglong Sword to a high-grade innate magic weapon, and another twenty crystalline salts are used to promote it to a top-grade innate magic weapon. However, he didn't have a single crystalline salt at present, so he had to borrow it from Niu Er.

"Okay, no problem, just pay me back when you earn points. ”

Niu Er is very cool, although he doesn't have much crystalline salt, but it is not a problem to lend Du Feng thirty.

Du Feng took thirty crystalline salts, all of which were ground into fine powder. Because the more crushed it is, the finer it is, the more convenient it is to absorb it by the dragon sword. Sure enough, as the sword man said, after feeding it twice, the dragon sword was easily promoted to the best innate magic weapon.

Now, Du Feng has to make a choice. Does he want to continue to keep and use the immortal Purple Thunder Sword, or do he want to use the Purple Thunder Sword as a raw material and devour it by the Dragon Sword. If it is devoured, the Dragon Sword can also be successfully promoted to an immortal weapon, but the Purple Thunder Sword will disappear completely.

But if it is not devoured by the Dragon Sword, then for a long time, it will not be able to find a better material to devour.

"I've wronged you!"

Du Feng thought about it, but still took out the Purple Thunder Sword. In fact, this sword has reached the level of an immortal weapon, and it has a certain spirituality. Knowing that he was going to be devoured, he was still a little unwilling, so not only did he tremble and make a buzzing sound. However, it is always Du Feng's weapon, and he still has to listen to his master.

Swallow it!

A dragon sword of the best innate magic weapon level, if you want to devour the purple thunder sword that is higher than its level, you must have the assistance of the master. Therefore, the dantian was activated, and a large amount of true yuan was injected into the dragon sword. The sword man and the dragon soul inside became extremely fierce with the support of Zhenyuan.

"Roar!"

With a roar, a giant dragon emerged from the Dragon Riding Sword, with a swordsman riding on it.

"Zlazra......"

After all, the Purple Thunder Sword is an immortal weapon, and it is still a little unconvinced. It instinctively resisted, constantly releasing purple thunder and lightning. If it weren't for Du Feng's suppression, I'm afraid he would have already started attacking the Dragon Sword.

The dragon opened its mouth and swallowed the Purple Thunder Sword in one fell swoop. Then the swordsman riding on its neck actually followed into the dragon's mouth. I heard the dragon's mouth, and the sound of clanging kept coming, and it took a while for this sound to stop.

Then the dragon closed its mouth and obediently slipped back into the dragon sword. On the smooth body of the sword, there is a reappearance of the dragon's pattern. But for some reason, the swordsman on its neck disappeared.

Du Feng was a little worried, afraid that this promotion would fail. If that's the case, not only will the Purple Thunder Sword be abolished, but even the sword man may disappear. What he can do at present is to continue to input the true yuan into the Dragon Sword, hoping to play some positive roles.

With the influx of a large number of true yuan, the dragon sword emitted a dazzling light, and Niu Er couldn't open his eyes when he was stabbed next to him. Just close your eyes and use your mind to slowly observe.

The dragon pattern on the body of the dragon sword seems to be twisting slightly, and its belly is also bulging as if it is about to lay eggs. This phenomenon lasted for a while, and the dragon pattern suddenly stopped moving. The shadow of the sword man slowly began to appear. It was light at first, but slowly it started to get deeper. When he was fully revealed, the dragon sword let out a chirp.

It was done, and it finally worked. After tossing for so long, the Dragon Sword was finally promoted to an immortal weapon.

Wait, it doesn't seem to be over, why is that pattern moving again? The sword man rode on the dragon's neck, and although it did not rush out of the sword, it gave people the feeling that it was soaring.