The Yin Yang Burning Sky Fire Pill had just taken shape, and it was still very fragile. At this time, whether it is used for combat or alchemy, it is not a good idea. Only when the Yin and Yang Burning Sky Fire has grown to a certain point can these tasks be completed.

The only way to make the Yin and Yang Burning Sky Fire grow is to devour other fires. Of course, if a low-level Yin Yang Burning Sky Fire wants to devour a high-level fire, such as the Sun True Fire and the Taiyin True Fire, then there is only one result, which is to be refined by these high-level fires. Therefore, devouring can only start from low-grade fires and slowly grow itself.

The first-grade fire is indeed the best tonic for the Yin and Yang Burning Sky Fire, and after absorbing the remaining first-grade fire, the Yin and Yang Burning Sky Fire in Yang Chen's body has begun to slowly become stronger.

In Yang Chen's chalk, there were already dozens of yin and yang fires fused with second-grade and third-grade fires, all of which had been used as the foundation of the Yin-Yang Burning Sky Fire, which also made Yang Chen's current Yin Yang Burning Sky Fire much stronger than ordinary horizontal fires.

After devouring all the first-grade fires, and then absorbing the second-grade fires, there are naturally not too many obstacles. Now Yang Chen doesn't have to be too deliberate to control the absorption, all of them are the Yin and Yang Burning Sky Fire spontaneously completing the whole process, compared to before, Yang Chen is completely needed to control it, it's not a little bit or two.

At least Yang Chen didn't need to control the flames anymore, for fear that the fusion of the flames would cause an explosion, all this, the Yin and Yang Burning Sky Fire no longer had this kind of worry, the characteristic of this flame, in addition to the Burning Sky, was to devour. Devour all kinds of flames, as long as they are within the limits of its grade.

Perhaps the primary Yin-Yang Burning Sky Flame, which is completely composed of first-grade flames, can only automatically absorb the flames of the first grade, but as long as it absorbs more than two second-grade flames, and the propylene flame and the Ding flame are complete, the primary Yin-Yang Burning Sky Fire can automatically absorb the second-grade flames. Of course, when Yang Chen was absorbing, he should also pay a little attention to the balance of yin and yang.

The current Yin and Yang Burning Sky Flame, but it contains several third-grade flames, is no longer primary, so the second-grade flame is completely automatic in the absorption and fusion. The only thing that needed to be controlled by Yang Chen was that the flames in the Spirit Furnace should be cut off in a timely manner, so as not to completely absorb the fire in the Spirit Furnace.

The two fire dragons in Yang Chen's body began to change slowly under Yang Chen's crazy absorption. Each time it absorbs a flame, the dragon's color changes by one point. The purple flame is getting thicker and thicker, while the cyan flame is getting lighter and lighter.

Of course, this change is just a trend, and the second-grade flame is, at best, just a little fragile to make the primary Yin Yang Burning Sky Flame no longer so fragile, and it is still far from a truly reborn change.

Yang Chen had dozens of second-grade flames on his body, but even if it was the spontaneous absorption of the Yin and Yang Burning Sky Fire, it still took Yang Chen at least half a year. Even if everything can be saved, only time can never be replaced.

When the number of second-grade flames exceeded eighty-eight or sixty-four, the spiritual power in Yang Chen's body changed again. The fire attribute spiritual power began to increase again.

This time, however, the fire began to balance completely. First of all, the spiritual power of Binghuo reached the realm of building the foundation of the ninefold, and then, in the change that the Yin and Yang Burning Sky Fire seemed to have stepped on a step again, the two spiritual powers of Binghuo and Dinghuo began to improve again.

The two fire dragons of Yin and Yang Burning Sky Fire were much more vivid than the original prototype, more and more like dragons, and even Yang Chen could barely distinguish which was the head and which was the tail.

To Yang Chen's surprise, he originally thought that the Yin and Yang Burning Sky Fire was two fire dragons head to tail to tail, but now he found out that this was not the case at all, the purple fire dragon and the cyan fire dragon were actually head and tail, and their heads were entangled with each other's tails.

Under the crazy rotation of the two fire dragons, the spiritual power of Binghuo and Dinghuo spiritual power seemed to be boiling, circulating and climbing within Yang Chen's meridians, and it seemed that it was only a short moment that Yang Chen's two spiritual powers were collectively pushed to the tenth level of foundation building, which was already the peak of foundation building, and he was only one foot away from stepping into the Jindan period.

The other spiritual powers, driven by the fire attribute spiritual power, also began to improve jointly, building the foundation sevenfold, and collectively ascending to the point of building the eightfold foundation before stopping steadily. ,

The changes in the Yin and Yang Burning Sky Fire and the improvement of spiritual power inevitably brought about changes in the sea of knowledge. As if echoing with the two fire dragons in Yang Chen's chalk, the two fire dragons in the sea of knowledge also became much clearer. The only difference from Yang Chen's body chalk was that the two fire dragons in the sea of knowledge were coiled on a towering pillar of Penglai Divine Tree. The two fire dragons directly turned the Penglai Divine Wood into a two-colored pillar of fire.

Unexpectedly, the divine consciousness skyrocketed again, from the point of the early stage of the Yuan Infant, directly to the apex of the middle stage of the Yuan Infant, and it could be stopped at this point, without taking a step forward, otherwise, Yang Chen would have to face the dilemma of the split of the divine consciousness again.

It's so dangerous, Yang Chen also secretly wiped the cold sweat on his head. Fortunately, it stopped at this point, and if it went any further, it would be troublesome. Now it's good to lie on the Dan at this point, and next time, Yang Chen will be promoted to Jindan, maybe he will be able to solve a big problem.

With a long breath, Yang Chen stopped his cultivation This time, the Yin and Yang Five Elements Technique collectively improved by one level, although it was only a short half a year, but then Yang Chen had to stop again to consolidate his cultivation.

This is a step that cannot be omitted, if Yang Chen still wants to have long-term development in the future. Originally, according to ordinary cultivation methods, it was impossible for Yang Chen to have such a fast ascension speed. However, in this life, Yang Chen's super ability to resist fire gave him such an almost cheating way to improve.

Usually, even if it is the same fire cultivation as Yang Chen, at most, it can absorb one kind of fire, and there is no one like Yang Chen who has absorbed hundreds of kinds of fire frantically, it can be said that there is no one before and no one after him. No one could be faster than Yang Chen's cultivation method.

Although Gao Yuegong Sun Ling claimed to be in retreat, she actually adopted a completely different method. In addition to practicing behind closed doors in this place full of spiritual power, they consolidated their way of cultivation and walked out of the ground to fight the demon beasts.

But Yang Chen's battle with these low-grade demon beasts didn't have much experience for Yang Chen. Therefore, Yang Chen's way of consolidating his cultivation returned to the aspect that Yang Chen was good at.

This time, Yang Chen chose to refine the weapon and refine a flying sword of the Great Yin and Yang Five Elements for himself again, the Jiamu Flying Sword. The Great Yin and Yang Five Elements Flying Sword, Yang Chen already has two. One is the internal C-fire Flying Sword Ming Light Sword, and the other is the Otogi Flying Sword Blood Demon Vine Sword. Now Yang Chen was about to start refining the Jiamu Flying Sword.

Refining the Jiamu Flying Sword, there is no more suitable material than the Penglai Divine Wood, this is something that Yang Chen has already decided on since he got the Penglai Divine Wood. However, at that time, Yang Chen's cultivation was low, and the Penglai Divine Tree had just been transplanted into the medicine garden, and it had not yet fully matured, so it had not been carried out.

Now, under the nourishment of the medicine garden, the Penglai Shenmu grows very well, and after the indirect nourishment of the thunder pomegranate, it looks even more lush.

The old tree demon Gui Shanyou just absorbed a Penglai Divine Tree, and his cultivation rose in a straight line, and until now, Yang Chen could no longer judge whether the old tree demon's cultivation had reached the middle of the Mahayana or higher.

Among the fully matured Penglai Divine Wood Forest, there was one of the thickest, which Yang Chen had specially nourished with the spiritual power of the Jiamu and the Wutu Spiritual Power after careful selection, and it was also the main material that Yang Chen chose for his Jiamu Flying Sword.

A complete Penglai Divine Tree was dug up by Yang Chen, and all the side branches and leaves were carefully disposed of by Yang Chen, leaving only the straight branches and the thick taproot.

Just like the Blood Demon Vine Flying Sword, the Penglai Divine Wood Flying Sword also needs to use the taproot of the Divine Tree. In fact, it is best to deal with the wooden flying sword in this way, and retaining the taproot retains the possibility of the future growth of the wooden flying sword, and it is also the key to the future upgrade of the flying sword.

Few people would be so extravagant to refine a flying sword with a whole Penglai Divine Wood, not because they didn't want to, but because they couldn't. The preciousness of the Penglai Divine Tree, even in the spirit world, is staggering.

The long branches and taproot are ten zhang long, and the two of them hug each other. Yang Chen didn't seem to see this length, and his hands began to cast spells one by one, hitting the giant wood in front of him.

In each of these techniques, there is a powerful spiritual power of the armor wood. Each spell that hit the huge trunk seemed to shrink the huge branch a little. ,

This process, Yang Chen did extremely carefully and hard. With his current cultivation, even every time he played a spell, the spiritual power of the armor wood in his whole body would be drained. Yang Chen had to rely on his strong recovery ability and the rich spiritual power of the underground leylines to be able to barely support himself.

In this technique, at least dozens of miniature formations were included. Fortunately, Yang Chen had a strong divine sense in the middle of the Yuan Infant Period, and the condensation of his divine sense was unprecedented, so he was able to complete such a difficult technique.

Hundreds of completely different spells were played in a row, and the trunk of the huge Penglai Divine Tree had almost doubled.

But for Yang Chen, he is still a behemoth.

The latter recipe seems to be more responsible and more energy-consuming. Every time he worked, Yang Chen had to rest for a long time. Recovering spiritual power is one thing, and even the divine consciousness has to rely on the Three Clearings to recover once before it can continue.

To refine the huge Penglai Divine Tree trunk into the size of an ordinary flying sword, this step alone would take Yang Chen's tremendous efforts.

Seeing that the huge Penglai Divine Tree was getting smaller and smaller, and Yang Chen's magic technique was getting slower and slower. Originally, it only took about half an hour, but now it takes at least half a day to be able to hit one.

On the trunk of the shrunken Penglai Divine Tree, a dazzling light has flashed now, and even Gao Yue and Gongsun Ling have been alarmed and come over to see what is going on.

Seeing that Yang Chen was effortlessly playing out the magic tricks, the two women also knew what was going on, and no one bothered Yang Chen, but just found a place from a distance where they could see this side and continue their cultivation. However, after each practice, he would always pay attention to Yang Chen's side once to make sure that there was nothing wrong with him, and then he would continue.

Yang Chen no longer had any concept of time, he only knew that he wanted to refine the huge tree trunk in front of him into his own armor wood flying sword. And the current step is to create a sword embryo, which is a water mill that cannot be saved.

Although for Yang Chen, doing this when his cultivation was higher would take less time and he would have a greater grasp, but Yang Chen didn't want to waste his time fighting demon beasts. The process of refining the Jiamu Flying Sword Embryo is itself a very good process of consolidating one's own cultivation.

For three years, Yang Chen did almost nothing else in the process of honing people's hard work and will. Every day, I will perform exercises to restore my spiritual power and divine sense, and then play the magic tricks.

Thousands of spells wrapped the entire Jiamu Flying Sword Embryo evenly. Now the sword embryo has been reduced to six feet in length, and the thickness of the wrist is the most suitable size for the flying sword embryo.

When the last spell was played, the sword embryo of the Jiamu Flying Sword, which was originally wrapped in dazzling light, suddenly converged all the light and revealed its body.

A shrunken Penglai Divine Tree's trunk taproot, its whole body covered with subtle dense rune spells, lay in front of Yang Chen, just like an ordinary wooden stick.

After all, it was just a sword embryo, and even the sword blade didn't open his mouth Yang Chen reached out and grabbed this sword embryo, feeling the feeling of the flying sword connecting with his heart, and his heart was satisfied.

This sword embryo has obviously been tempered for several years with the spiritual power of the armor wood that is in the same vein as the Penglai Divine Wood, so that it will have such an effect. After refining this rough embryo, Yang Chen could further elaborate and turn the Jiamu Flying Sword into the appearance he wanted.

"What is this?" Gongsun Ling's voice sounded from the side, she had already seen that there was no movement on Yang Chen's side, and she hurried here quickly, and asked curiously.

"The sword embryo of the flying sword. Yang Chen turned around and gave Gongsun Ling an intimate smile before replying.

Somehow, seeing Yang Chen's smile, Gongsun and Ling turned red, and I don't know what Lu Dao thought of that made her feel shy.

"You can also refine flying swords?" Gongsun Ling had never seen Yang Chen's process of commenting on Wang Yongge's ancestral Qi phosphorus flying sword, so he naturally felt very different from Yang Chen's refining of flying swords.

"Isn't it strange?" Yang Chen looked at Gongsun Ling, his heart was amused, but he continued: "Don't forget, my master is a rare refining master in the Pure Yang Palace!

"Don't forget, you've slapped your chest with our natal flying sword. Gao Yue's voice also sounded from the other side, and she never relaxed her attention to Yang Chen, almost arriving at the same time as Gongsun Ling. Listening to Yang Chen's words in reply to Gongsun Ling, Gao Yue interjected in time...... ）