While teaching Li Qianfeng Yuntong to refine the body decision, Lu Kun asked him to disperse his physical mana.

Li Qianfeng has not entered the bone treasure stage, and he cannot crystallize the mana of his flesh into the depths of his bones, and only by dispersing can he avoid the conflict between mana and qi and blood magic power.

The body cultivated in the blood coagulation stage could not withstand the annihilating power generated by the two energies.

The introduction of Yuntong Refining Body Decision is not difficult, after confirming Li Qianfeng's comprehension, Lu Kun used some magic Dao materials and magic stones to arrange the origin magic circle of Yuntong Refining Body Decision.

"Qianfeng, with the vigorous qi and blood of your blood coagulation stage, it is easy to cultivate qi and blood magic power, and then just listen to my orders. ”

Li Qianfeng nodded seriously and walked into the Origin Array, he sat cross-legged, the power of his divine consciousness operated in a unique way, and the circle under him gradually lit up with black light, and streams of demonic qi surged towards his meridians.

......

Lu Kun turned his head to look at Yu Xuan's position, although these demon bones were at the level of seventh-level demon soldiers, but with the power of Yuanyang Earth Fire's strange fire, they had already softened them.

"Yuxuan, continue to calcinate with a different fire. ”

"Yes, Master. ”

Lu Kun's eyes flashed with golden light, and he put his hand into the demon bone wrapped in strange fire, and his ten fingers jumped flexibly and flexibly.

After years of research, Lu Kun determined that the demon bone is an essential material for the weapon of the bone metamorphosis, in addition to its affinity for magic energy, another reason is that it is divided into three layers like the human skeleton, corresponding to the periosteum, bone, and bone marrow cavity.

After a while, the three colors of gray, black, and purple materials were separated by Lu Kun from the softened demon bones.

With the surge of the source power of the flesh body, the gray material was shaken into powder by the invisible void power and packed into a jade bottle.

The black material continues to levitate on the fire.

The purple material was kneaded by Lu Kun, and the brute force of both hands cooperated with the power of the void, and the purple material gradually turned into many hollow bones of different lengths, corresponding to the humerus (big arm bone), ulna and radius (lower arm bone) of the arm, as well as the metacarpal bone, the most basic bone marrow cavity structure.

At this time, he took out a bunch of pale red herbs that exuded a rich demonic aura, and gently rubbed them in the strange fire, and turned into a liquid state

Lu Kun waved his fingertips, sticking to the dark red liquid, carving magic patterns on the outside of the bone marrow cavity.

After entering the bone transformation period, the hands of physical cultivation are the best refining hammers, with the power of the void, the refining efficiency is not much stronger than before, the only flaw is that it needs other people to provide calcining flames.

Half an hour later, this layer of magic patterns was successfully completed, and a stone that was extremely black and exuded a deep aura appeared in Lu Kun's hand, he palmed one hand and clenched his fist in the other, beating and beating in the strange fire.

This stone is called the Demon Chalcedony Stone, which is a common material for refining magic weapons, and in addition to its hard material, it is also suitable for the conduction of various magical attributes.

After the magic chalcedony stone dissolved, Lu Kun fused it with the black material next to it and attached it to the outside of the bone marrow cavity to refine the bony layer of the bone.

......

Li Qianfeng felt the faint magic power in the meridians, and a terrifying look flashed in his eyes, this magic power was only at the level of the first level of qi refining, but it exuded a greedy and eager gaze, staring at his body, as if looking at some kind of food.

"Is this the magic of qi and blood?"

Even though the magic was so weak that his divine sense could easily control it, he still felt creepy.

Lu Kun seemed to be aware of Li Qianfeng's state, and ordered: "Qianfeng, transfer Yicheng's blood essence into the meridians, supply qi and blood magic power to devour, and I will instruct you on the method of transferring the flesh and blood essence." ”

Li Qianfeng nodded, obeyed Lu Kun's instructions, and sent blood essence into the meridians.

The qi and blood magic power seemed to have seen incomparably delicious food, and it pounced at once, and a large amount of demonic qi poured out from the surrounding magic circles at the same time, and the qi and blood magic power increased at an extremely fast speed.

Under Lu Kun's guidance, this qi and blood magic power devoured Li Qianfeng's thirty percent blood essence and grew to the level of the middle stage of qi refining.

And at this time, the bone layer of the demon arm bone was also refined, and this pitch-black right arm bone flew to Li Qianfeng's side, and the top of the big arm bone was attached to Li Qianfeng's right shoulder joint.

Lu Kun said in a deep voice: "Qianfeng, concentrate on controlling the qi and blood magic power, follow the guidance of my divine thoughts, and transport the qi and blood magic power in the blood. ”

Li Qianfeng's expression was solemn, and he concentrated his mind on controlling the qi and blood magic in the meridians and extraditing them into the blood vessels.

This qi and blood magic absorbed thirty percent of the blood essence, but it was incompatible with the blood of his flesh itself, like two energies.

While following Lu Kun's flesh and blood transfer technique, he carefully transported the qi and blood magic power and sent it to the shoulder joint.

Lu Kun nodded with satisfaction, and he said, "The refining of the outermost layer of periosteum requires the cooperation of your qi and blood magic power, vomiting blood essence, and constructing a small network of blood vessels. ”

Li Qianfeng was slightly stunned, he immediately thought of the network-like magic pattern described in the Demon Dao Alchemy Technique, wasn't it equivalent to the vascular network in the periosteal layer of the bone?

Muscles and bones are connected through tendons, and the key to the connection between tendons and bones lies in the network of small blood vessels in the periosteal layer.

If he used his blood essence to depict this vascular network, he would have a connection with the magic arm.

"I will use my divine sense to guide you to draw a network of blood vessels, your mind should focus on the qi and blood magic, if the mind is lost, the qi and blood magic will be out of control, then your physical body will be in danger. ”

Li Qianfeng didn't dare to slack off at all, in the process of transporting qi and blood magic power just now, he had already felt the greed of this evil energy for his physical body.

With the manipulation of his divine sense, several dark red mist-like tentacles appeared on the surface of his right shoulder joint, which were somewhat impatiently glued to the bones of the demon arm.

The main material of this demon bone is the flesh of the demon race, although the qi and blood magic power of the qi refining level cannot devour the bones of the seventh-level demon soldiers, but the powerful demon body aura has a great temptation to the qi and blood magic power.

Li Qianfeng only controlled it slightly, and this greedy energy was attached, and then he ran the secret method of the Lu Kun Sect, and little by little the blood essence was spit out, and began to weave a network of blood vessels on the surface of the bone.

Lu Kun took out two jade bottles at this time.

One was the gray powder that he had put away before, and the other was filled with a strange black liquid, Lu Kun first sprinkled the gray powder on the freshly formed blood vessels, and then injected the black liquid.

When the two are mixed, a hard gray-black periosteal layer is formed that covers the blood vessels.

In this way, after five or six hours, the refining of the periosteal layer was completely completed, and the entire demon arm bone exuded an incomparably deep demonic aura, but it was only attached to Li Qianfeng's shoulder joint, and there was no bond fusion.

Lu Kun said: "Qianfeng, the demon bone has been formed, and the last step is to absorb your muscle essence through the magic power of qi and blood, vomit back on the magic treasure, and follow the previous vascular network to give birth to the demon arm muscle." ”

Li Qianfeng's face turned pale, although he was guided by Lu Kun's divine sense, but with the power of his divine sense, it was still a little difficult, and when he heard Lu Kun's command, he cheered up and mobilized his qi and blood magic power again.

After the periosteal layer is successfully refined, the qi and blood magic power can circulate through the vascular network in the demon bones and flesh body, and since it has lost a lot of blood essence, it has been reduced to the early stage of qi refining, and it is much easier to control.

Next, under the guidance of Lu Kun, Li Qianfeng used his qi and blood magic power, slowly devouring his own flesh and blood essence, and then vomited back through the vascular network, gradually generating the tendons, fascia and muscles of the demon arm.

Half a day later, Li Qianfeng's sturdy body shrank around, and the bare demon arm bone on the right side had disappeared, replaced by a thin right arm with shriveled muscles.