Generally, the primary space ring has only one cubic meter of space, the medium space ring has ten cubic meters of space, and the advanced space ring has a hundred cubic meters of space. The price of the space ring itself is not very expensive, and the high-level space ring only costs a few thousand gold coins, which is about the same as the price of an upper-middle level war knife.

However, battle swords are scarce in the Infernal Hell, but there are many in the Hitomi Martial Continent. The space ring is not like this, even in the Tongwu Continent, it is extremely rare, although it is said that the price on the market, but it is priceless. As for this Infernal Hell, ordinary people don't have space rings at all, not even elementary ones.

"Apprentice, let's take a look, is there another one in the Leaving the Heaven Separation Space Ring!" Yan Lao said excitedly after seeing that Yu Hao had picked up the Separation Fire Knife Saint's Space Ring.

Hearing this, Yu Hao immediately began to investigate. There are really a lot of things in the Fire Sword Saint Space Ring, with a large number of gold and silver treasures, including gold coins on the Pupil Martial Continent and silver stones in the Infernal Hell. There are also rare medicinal materials and pills, but Yu Hao has never found things like cheats.

Just when Yu Hao was about to give up, in the space ring, in an inconspicuous corner, Yu Hao found a piece of iron.

"Teacher, isn't this piece of iron?"

Yu Hao turned his hand and took out this piece of iron, and Yan Lao's illusory figure had now appeared on Yu Hao's side.

Yan Lao's eyes stared at the fast iron piece in a daze, his eyes were full of excitement, and a look of ecstasy appeared on his face.

"Yes, it's this piece of iron, and there is the Fire Separation Knife Method!" Yan Lao said to Yu Hao excitedly.

Seeing that Yan Lao was so excited, Yu Hao could also be sure that this piece of iron should really be another piece of the Fire Knife Method. However, there is one thing that Yu Hao is very strange, as a well-known sword saint, how can he not have any combat skill secrets in his spatial ring?

"Teacher, the Fire Sword Saint has already practiced the Fire Sword Separation Technique, why don't you destroy this iron piece?" Yu Hao guessed, the other combat skills of the Fire Sword Saint are estimated to be destroyed after they have been learned, and they are no longer useful, and they are also to avoid other strong people from obtaining them.

"It is naturally useful for him to keep this piece of iron, and other combat skill cheats can be destroyed after remembering, but this is not good for the fire knife method cheats, because it is still useful!" Yan Lao said with a smile.

"It's still useful, I've already learned it, what else can it be used?" Hearing Yan Lao's explanation, Yu Hao was even more confused, and asked puzzled.

"The fire knife method is divided into two parts, and although the two are relatively independent, they can be combined into one. But if you want to synthesize one, it doesn't mean that you have learned two combat skills. Instead, it is necessary to put the iron piece that originally recorded the two sword techniques together to refine and melt it to obtain a new combat skill, which is the reason why the Fire Sword Saint did not discard this iron piece!" Yan Lao said with a smile.

Originally, there were only three people in the world who knew this secret, one was the Fire Sword Saint, one was Yan Lao, and the other was the teacher of the two of them. But now that the Fire Sword Saint is dead, their teacher has disappeared for thousands of years, and only Yan Lao is left who knows this, but now there is one more Yu Hao.

After hearing Yan Lao's words, Yu Hao couldn't help but admire Yan Lao and the teacher of the Fire Sword Saint. Elder Oh said that the Fire Separation Knife Method itself was created by their teacher, and their teacher was able to come up with this method to divide the Fire Separation Knife Method into two and pass it on to the Fire Separation Sword Saint and Yan Lao respectively.

However, listening to what Yan Lao said, Yu Hao suddenly thought of something, and his brows couldn't help frowning.

"Teacher, where is the other piece of iron now?" Yu Hao said suspiciously.

"Such an important thing, the old man naturally carries it with him, but when the old man fell, in order to prevent the Fire Sword Saint from getting this piece of iron from me, he crushed the space ring, and all the things in the space ring fell into the space crack!" Yan Lao said this, his face was a little embarrassed, but he still said truthfully to Yu Hao.

"I fell into the gap in space, so how can I get that piece of iron again?" Yu Hao frowned and asked Yan Lao.

"This, I'm afraid there is no chance!" Yan Lao shook his head helplessly and said, "The spatial turbulence in the spatial crack has the power to strangle, enough to crush all ordinary items. Even if this piece of iron is not crushed, it will wander around the cracks of space, and if you want to find it, it will be as difficult as finding a needle in a haystack!"

Spatial turbulence exists in the cracks of each space, the Hitomi Continent is a large space, and the Infernal Hell is a small space under the Hitomi Continent. There is a spatial gap between the two, and spatial turbulence exists in these space-time cracks.

After the space ring is crushed, the items in it fall into the space crack, after the strangulation of the space turbulence, most of the things will be shattered, only a small number of rare treasures, extremely hard things will be preserved, free in the space cracks.

"Wouldn't you never get the complete Fire Separation Knife Technique?" Yu Hao said with a look of loss.

The Fire Separation Sword Method is divided into two articles, each of which is a ground-level primary level combat skill, even if Yu Hao now gets the one in the hands of the Fire Separation Sword Saint, adding up, Yu Hao can only be regarded as having two ground-level primary combat skills.

However, if the two pieces of iron that record the Fire Separation Knife Method are refined, the level that the Separation Fire Knife Method will reach will be at least above the Heaven Level Battle Skill.

It's a pity that now Yan Lao's piece of iron has fallen into the spatial turbulence, and Yu Hao doesn't seem to have a chance to get it. The heaven-level combat skill is right in front of him, but it has quietly passed from Yu Hao's hands, no wonder Yu Hao feels lost.

"Apprentice, you don't have to be depressed, in fact, even if my piece of iron is in my hand now, it may not be useful!" Yan Lao said to Yu Hao when he saw that he was so frustrated.

"Hmm, teacher, how do you say this?" Yu Hao suddenly raised his head when he heard what Yan Lao said, and looked at Teacher Yan curiously.

"Look at this piece of iron in your hand, do you know what material it is made of?" Yan Lao said to Yu Hao with a smile.

Yu Hao looked at the piece of iron in his hand and couldn't help but wonder. How to say that Yu Hao is also a refining master, and he also knows a lot about metal, but the piece of iron in his hand does not know what kind of material it is. Although Yu Hao has seen more metal in the world every time, Yu Hao has seen the record in the book. Yu Hao is sure that the material of this iron sheet does not belong to any kind of metal recorded in the book.

"I've never seen this metal, and it's completely different from the metals recorded in the book, so I don't know!" Yu Hao truthfully explained to Yan Lao.

"It's normal that you don't know, and this piece of iron can't be melted with my ability. In the past, I tried to melt my piece of iron, but I tried dozens of times, and each time it failed. That's why I said, with your current ability, even if you get two pieces of iron, it's useless, and you can't get the fused Fire Separation Sword Method!" Yan Lao said to Yu Hao with a smile.

In fact, Yu Hao also understands that the more precious things are, the more difficult it is to obtain. Heaven-level combat skills, after all, are not so easy to obtain. This kind of thing is unattainable, and it is normal to be able to get it, and it is normal to not be able to get it.

However, Yan Lao's words also illustrate one point, indicating that the material of this piece of iron is extremely hard, even if it falls into the space crack, it will not necessarily be crushed by the space turbulence. On the contrary, it is more likely to survive in the turbulence of space.