According to the records in the "Huangquan Ghost Trick", there are many kinds of bones used to refine the soul flag, which can be beasts, birds, and of course, for novices, the best is human bones, which are plastic, high quality, easy to form at one time, in short, in a word, the success rate is high!

In the netherworld, the dog can't be sure whether these bones are human bones or not, but one thing she can be sure of is that these bones produced by the death of the black iron skeleton are definitely higher in quality than human bones, and she has no psychological burden to use!

As the dog continued to pinch the fingers, the bones slowly flew in front of her, and the dog spit out a mouthful of aura on those bones from time to time, slowly invading the inside of the bones with its own aura, making it have a slight connection with itself, this process is very similar to the process of refining soul bones in Jiang Cheng before, but the difference is that one uses its own soul fire, and the other uses aura.

However, although the things used are different, with the continuous invasion of the dog's aura, those bones also began to slowly combine according to the dog's wishes, and gradually produced a trace of deformation, and slowly fused with each other.

The appearance of a bone banner gradually appeared, but a layer of fine beads of sweat appeared on the dog's forehead, such a large amount of consumption of the aura in her body, the dog was the first time, which made her feel very hard and uncomfortable!

Fortunately, the bone banner has already taken shape, and it only takes a little more work for the dog to make it completely complete.

But just when the dog was full of anticipation, the bone banner that had begun to condense and form suddenly collapsed in an instant, turned into broken bones, and scattered on the ground.

The dog opened his eyes in shock, completely unaware of what had just happened: "This ...... What's going on, and why can't it succeed at the last step?"

Jiang Cheng slowly walked to the dog's side, picked up a bone that had fallen on the ground and looked at it carefully for a while!

"How is it?Ah Cheng, can you see what is wrong?" Gou'er asked with a little nervousness, although the method of refining the soul banner was learned from a book, but compared to the understanding of bones, Jiang Cheng is a master-level existence, after all, people are made of bones!

"Well, it seems that the problem is in the soul fire space, your spiritual power has simply invaded the outer soul crystal particles, but not into the soul fire space, so it is difficult for you to completely fuse different bones together!" Jiang Cheng took a bone and explained to Ah Gou.

"Soul fire space?" The dog thoughtfully picked up a bone again, and completely poured the little spiritual energy left in his Danhai into this bone, and sure enough, after a large amount of spiritual energy poured into that bone, the dog saw the soul fire space that Jiang Cheng said for the first time!

The aura soon occupied the small space on that side, and a wonderful sense of connection was transmitted from the bone to the dog's heart, and under the dog's control, the bone slowly flew up, and slowly changed its shape in the air, becoming an extremely sharp needle!

"Whoosh!" the dog tried to wave his hand, and the bone needle shot towards a large stone in the distance, and the two-inch-long bone needle did not reach the root prescription before it unloaded its strength, if it was nailed to a person, it must also be a pair of piercings!

"It's done!hahaha!It's done, Ah Cheng, Ah Cheng, I succeeded!" After the dog took back the bone needle, he took Jiang Cheng's hand and jumped and jumped, happily like a child, uh~ No, it seems that she was just a child!

"Hmm!" Ah Gou suddenly felt a wave of dizziness, his body shook and almost fell, Jiang Cheng stretched out his hand and slowly supported his body, letting her sit on the ground slowly!

"Ah Cheng, it's successful!" Even at this time, the dog was still excited!

Although Jiang Cheng couldn't understand the meaning of the expression on the dog's face at the moment, it was not difficult for him to feel the dog's emotions at this moment, just like the feeling he felt when he sucked the black iron skull soul fire, it was very pleasant!

The dog's mood makes him very comfortable, and his unconscious mood will get better, and it seems that when the dog's face shows two curved crescents, it should mean that her mood is very good!

"Your aura consumption is too great now, you need to recover well!" staring at the two "crescent moons" on the dog's face for a while, Jiang Cheng said!

"Well!good!" the dog nodded lightly, and then sat cross-legged on the ground, running Xuan Gong, recovering the aura in his body, although it was in the Netherworld, but the dog could practice with confidence, because there was Jiangcheng here!

It is not very easy to restore the aura in the body in the netherworld, although there is indeed aura here, but the content is extremely low, and there are some other special substances mixed in these aura, the dog once accidentally absorbed a little, but if Jiang Cheng hadn't taken that thing away, it is estimated that the dog would have become a bone now!

So every time he absorbs aura, the dog will be extra careful, and another digression, Jiangcheng's existence in the Yanluo Continent has a time limit, but the dog doesn't seem to have this restriction in the netherworld, at least so far, no!

After about two full hours, the dog finally opened her eyes slowly, and at this moment the aura in her body was already saturated!

"Ah Cheng, I'm going to try the soul banner again!" said the dog with a little excitement.

"Hmm!" Jiang Cheng nodded!

"Okay! This time, it must be successful!"

The dog secretly cheered himself up, and then began to pinch his fingers continuously, and then the bones flew up from the ground again, but since most of the bones had been sacrificed by the dog once, so this time, the dog only needed to open up the soul fire space contained in it!

As time passed, the number of soul bones that the dog could manipulate at will became more and more, and gradually reached the number required to refine the soul flag.

And then is a more important step, fusion, the dog began to slowly splice these soul bones together, when the two soul bones collided, a wonderful thing happened, the aura of the dog in the soul fire space within the two soul bones automatically ran out and fused together, thus connecting the two soul bones closely!

The dog was overjoyed, but he didn't dare to be too careless, and still carefully manipulated these bones.

When the last bone was spliced together by the dog, a bone banner was erected between Jiang Cheng and the dog, and the dog slowly stood up, looking at the soul banner in front of him, and a sense of pride arose.

However, if you want to truly complete the bone banner sacrifice, you still need to take the last step, the dog gently bites the fingertip and drops a drop of blood mixed with its own aura on the bone flag!

In an instant, the bone banner has undergone a great change, the originally black bone has turned bright red at the moment, and there is a strange light on it, in addition, the bone banner is all made of bone, so it gives people an extremely hard feeling in texture, but the dog's bone banner can be described as supple, and when the breeze blows, the banner even has to dance with the wind!

A feeling of blood connection was transmitted from the bone banner to the dog's heart, she waved her hand lightly, and the bone banner immediately flew into her hand, the dog carefully looked at the bone banner in her hand, and her heart was very happy, because the soul banner she condensed this time was not an extraordinary product, but the best soul banner recorded in "Huangquan Ghost Decision": Thousand Soul Flags!

According to the records in the book, the soul flags of the first sacrifice can be divided into different grades according to the color, white is the lower grade soul flag, the soul flag can only hold one to nine souls after the successful sacrifice, the middle grade black is ten soul flags, which can accommodate ten to ninety-nine souls, the upper magenta hundred soul flags can hold the number of souls from one hundred to nine hundred and ninety-nine, and the best blood-red thousand soul flags can hold more than a thousand souls!

If the dog is a disciple of the Ten Thousand Ghost Cave, and you can obtain the Thousand Soul Banner by refining the Soul Banner for the first time, then even if her qualification is only the last level, it is still enough for the sect to pay attention to it and focus on cultivation!

The dog excitedly waved and played with the soul flag in his hand a few times, and looked at the soul fire in the distance and was a little eager to try.

Jiang Cheng looked at her appearance, and understood her thoughts, and as soon as her body moved, she came to a ball of soul fire, and when the soul fire saw Jiang Cheng, it was like a mouse seeing a cat, and it shook violently in place, almost shaking itself apart!

However, Jiang Cheng didn't care about him so much, reached out and grabbed the soul fire in his hand, and then returned to the dog and handed the soul fire to her!

The dog looked at the soul fire and smiled at Jiang Cheng: "Thank you, Ah Cheng!"

Then the fingers in his hand continued to pinch, and a very cumbersome mark was made on the soul fire, this mark is called "Soul Detention Seal" according to the record in the "Huangquan Ghost Trick", which is specially used with the soul flag, which can restrain the soul and put it into the soul flag, once it enters the soul flag, the soul will be gradually assimilated and become a part of the soul flag, which is inseparable!

And after the dog finished this mark, the soul fire seemed to lose consciousness, and it didn't tremble, and I didn't know that it was scared, just like a human fainted, the dog was curious, and reached out and stabbed him twice in a row, and the soul fire didn't react at all!

Immediately, the dog grabbed the soul fire and threw it into the soul flag, and then the dog's consciousness also followed into the soul flag to investigate, only to see a bright little bright spot in the soul flag, and this bright spot is the soul fire just now, as soon as you enter the soul flag, the consciousness of the soul fire will automatically recover, and it is bumping around to get out, and the dog doesn't pay attention to it, anyway, it only takes another cup of tea, and the soul fire will be assimilated and become obedient!