In the cave, Ling Feng held the jade slip in his hand, studying tirelessly, more than two hours passed in a blink of an eye, the sky gradually darkened, and it was not until night fell that Ling Feng came to his senses, his face was still full of surprise.

"This blood refining technique is really magical, and the predecessors who can create such secret techniques must be great and powerful. Ling Feng was very excited in his heart, this jade slip recorded a secret technique called a secret technique, which is a kind of art of sacrificing magic weapons, you know, the most important thing about the quality of the magic weapon is the material for refining this magic weapon, if a magic weapon is formed, it is very difficult to improve it again, although there is a natal magic weapon technique, which can allow the monk to practice a natal magic weapon that is connected with his own mind, and it can continue to become stronger with the improvement of the monk's strength, but the natal magic weapon is the natal magic weapon after all, each monk has only this one, and if the quality of the magic weapon is too poor, even if the monk's strength is very strong, it may not be able to raise this magic weapon to a very high level, and this blood refining techniqueAlthough it can't fundamentally solve the drawbacks of the natal magic weapon, it is enough to make Ling Feng excited.

Although this blood refining technique can be sacrificed to produce a lot of magic weapons similar to the natal magic weapon, after all, it cannot be completely connected with the monk itself, and the potential for improvement is limited, but it is completely possible to refine a magic weapon of an entering the Dao realm monk into a magic weapon of the empty underworld realm.

With their own essence and blood as a guide, and the magic weapon to establish a connection, although this connection is not as close as the natal magic weapon, but it is far beyond the general recognition of the master, after the blood refining of the art of sacrifice, this magic weapon has become a real killing soldier, as long as you hold the magic weapon that has been refined by the blood refining art to kill the enemy, each time you kill someone, the magic weapon can absorb the evil qi and resentment on the person's body, so as to strengthen itself, like Wu Mo's double-edged giant axe, its own quality is only average in the magic weapon of the Dao realm, but after the sacrifice of the blood refining technique, not only the power has increased, but also the special attack such as killing illusion, and the stronger the person killed, the greater the evil energy absorbed by the magic weapon, Although Wu Mo has also killed many people, his own strength is limited, and most of the people he killed are not very strong, if Wu Mo has the strength of Ao Yan, it is estimated that this double-edged giant axe has already stepped into the level of the magic weapon of the Empty Netherworld.

"The more people you kill, the stronger the magic weapon, I was going to take the way of killing, why not be afraid of killing, this is far more valuable to me than those magic weapons. Ling Feng's face was overjoyed, what if there were many magic weapons? Controlling magic weapons also requires divine sense, and whether a magic weapon fits the monk itself is also very important, how much power can a monk who specializes in cultivating fire practice use a magic weapon with water attributes? Although Ling Feng is a chaotic body, it stands to reason that there is no problem of attribute incompatibility, but in fact, Ling Feng attaches more importance to the problem of fit than ordinary monks, for example, Ling Feng is now taking the essence blood of the Golden Horned Lion Beast, the power of Jin Xing in his body is quite strong, and the power of other attributes is suppressed by the power of Jin Xing, from a short-term perspective, this temporarily helps Ling Feng's strength, but the longer the time, this disadvantage will gradually be revealed, so rather than controlling multiple magic weapons at the same time, Ling Feng prefers to have a powerful magic weapon that fits with himself, and now with the art of blood refinery, the connection established by the art of blood refining is not much more than the natal magic weapon, which is enough to make up for the uneven strength of the various systems in Ling Feng's body.

"If the Spiritual Light Mirror can obtain the sacrificial refinement of the Blood Refining Technique, the power will definitely reach the level of the magic weapon of the Void Underworld, and when the time comes, if that Ao Yan appears in front of me again, I will be completely sure to kill him. "Ling Feng is full of confidence, the gap between the magic weapon of the Entering Dao Realm and the magic weapon of the Empty Netherworld Realm is like the gap between the monk of the Empty Netherworld and the monk of the Entering Dao Realm, it is ten times greater, if there is a magic weapon of the Empty Netherworld in his hand, even if he cannot fully exert his power, it is not a problem to kill Ao Yan, the matter of Ao Yan has always been a knot in Ling Feng's heart, although he killed Yu Yao and Wu Mo, but these two are completely two little minions compared to Ao Yan and the mysterious masked man, as well as the masters of these people, if there is enough strength, Ling Feng naturally hopes to kill this Ao Yan, as long as this Ao Yan is killed, The powerful and mysterious master behind him can't show up because of some obstacles, then the only one who threatens him is the masked man, and he can also roam freely in the Cangyu Mountain Range, now the wind and clouds in the Xuan Domain are prominent, and he can't move freely in the Cangyu Mountain Range, which really wants to suffocate Ling Feng to death.

"The Art of Blood Refiny..... Well, you still need to study it well, so let's try it with the Dementor Bell first. "Ling Feng actually didn't know the bottom in his heart, although there was no record on this jade slip that the blood refining technique would fail, but there was no big mistake in being careful, his understanding of the blood refining technique was not enough, and then he studied it carefully, and then took the soul bell to try his hand, Ling Feng didn't dare to directly take the spiritual light mirror to practice, this spiritual light mirror is his strongest magic weapon, the quality is definitely the peak level of the Dao realm, and it is also the magic weapon that his grandfather personally gave him, if something goes wrong, Ling Feng can't bear it, so he still first takes a soul bell that doesn't help his strength much to practice。

"Let's dig into it a little more. Ling Feng said, his divine sense was immersed in the jade slip again, the most important thing he lacked now was time, he had enough time to study this blood refining technique, although the soul bell did not help him much, but after all, it was also a magic weapon, Ling Feng did not want to lose it in vain, since this was the case, it was better to spend more time studying this secret technique.

"Take the essence blood as the guide, coagulate the blood seal, the blood mark can reach up to eighteen, and the minimum is six, the more blood marks, after integrating into the magic weapon, the higher the fit between the magic weapon and the monk, if you can condense the eighteen blood seals, the fit of the magic weapon after the successful sacrifice will not be lower than the natal magic weapon...... Ling Feng held the jade slip in his hand, his body and mind were all immersed in it, when he saw this blood seal technique, Ling Feng couldn't help but feel a tightness in his heart, but when he saw the back, Ling Feng's heart was relieved, at least, even if the sacrifice failed, the magic weapon would not be damaged in the slightest, and the monk would not be implicated, which made Ling Feng breathe a sigh of relief, and according to the record on this jade slip, although it was very difficult to condense eighteen blood seals, it was still very easy to condense six blood seals, at least, as long as you were a monk, condensing six blood seals should not be a problem.

"Eighteen blood marks? I'd like to try how difficult these eighteen blood marks are to condense them. Ling Feng was ambitious in his heart, now he was not worried about the failure of the sacrifice, after all, even that Wu Mo could succeed in the sacrifice, if he failed, it would be a strange thing, but Ling Feng was not willing to only condense the six blood seals, even if the six blood seals were condensed, the fit between the magic weapon and the monk himself was average, and if the eighteen blood seals could be condensed, the magic weapon that was successfully cultivated was not much different even compared with the natal magic weapon, this was Ling Feng's goal, he was never willing to be left behind, according to this jade slip, although the eighteen blood seals were difficult to condense, but there were still many people who successfully condensed them, since others could do it, why couldn't they do it？

"Hmph, since that's the case, let's get started. Ling Feng's divine sense broke away from the jade slip, and he turned his hand and took out a small bell, the bell was black all over, exuding an evil and poisonous aura, it was the magic weapon soul bell, and it was also the target of Ling Feng's first sacrifice.