Han Feng carefully combed the demonic qi in his body, refined them into majestic energy through the Spirit Refining Vajra Technique, and continued to impact the seventh layer of golden diaphragm, rippling out layers of ripples.

For some reason, as he absorbed more demonic energy, the more he felt that the Spiritual Refining Vajra Technique was very suitable for refining these demonic qi, and he couldn't help but think to himself, could it be that when Lady Bailong created this exercise, she also referred to some demon exercises, which caused it to refine demonic energy?

Thinking about it, there is also this possibility, after all, in the era of Lady White Dragon, it happened to be when the people of the two demon clans were wreaking havoc on this world, she killed so many powerful people of the demon race, and had seen their various demon exercises, so it was naturally possible to dabble in them, and it was not impossible to learn some essence from them.

Now, after being nourished by demonic energy, the Soul Refining Vajra Technique is like a door has been opened, completely activating a certain ability, making it more powerful, and with a little operation, there is a majestic power oozing out, and it has been able to refine demonic qi by itself, transforming it into endless power, and finally breaking the seventh layer of golden diaphragm.

Han Feng became energetic, he took a big breath, and then guided a large amount of demonic qi into his body, which was quickly transformed into special energy, impacting the eighth layer of golden diaphragm.

"Bang ......"

There was a strange sound, and all kinds of forces hit the eighth layer of golden diaphragm, making it convex and concave, as if it was about to collapse.

But after a long time, this layer of golden diaphragm could not be broken, he could only continue to absorb more demonic qi, fortunately, his body had fully adapted, under the extremely fast operation of the alchemy vajra technique, all these demonic qi were transformed into majestic power, and once again impacted the eighth layer of golden diaphragm.

"Boom!"

With a violent bang, this layer of golden diaphragm was finally broken, and the bottleneck of this mid-stage knot was left with the last layer of golden diaphragm.

Han Feng secretly breathed a sigh of relief, and continued to swallow a large amount of demonic qi into his body, impacting the ninth layer of golden diaphragm in one go, causing it to rattle, the light flickered, and the ripples scattered.

However, this last layer of golden diaphragm was unbreakable, and all the attacks he channeled the demonic qi to gather collapsed, and it was impossible to blast it away.

Han Feng was helpless, but at this time, there was no other better way, so he had to go all out to absorb the demonic qi and attack the ninth layer of the golden diaphragm one after another.

Time quickly passed for more than half an hour, and his golden diaphragm still did not succeed in breaking through.

At this moment, the remnant talisman gradually stopped absorbing those demonic qi, it seemed to be saturated, and the branch lines on its surface also recovered to the one hundred and eighth, stopping at the last gap, as if this was a big hurdle, and no amount of demonic qi could fill it.

Han Feng didn't pay much attention to it at first, but at this moment, the light of the remnant talisman suddenly began to converge inward, startling him a lot, if there was no remnant talisman white light to resist the invasion of demonic qi, he was worried that his body would not be able to withstand it, let alone break through to the middle stage of the Jiedan, and even his life would probably be lost here.

Han Feng hurriedly divided part of his mind and immersed himself in the soul sea, and kept communicating with the remnant talisman, finally so that it did not completely retreat, and there was still some white light on his body to resist the invasion of demonic energy, but it also made him feel a lot of pressure, and he had to cast spells to resist together.

He secretly slandered in his heart, thinking that this remnant charm could not be deliberately trying to make things difficult for himself.

However, when he thought about it, he felt that it was impossible, after all, the remnant charm did not have his own independent thinking, and many times it was just instinctive behavior.

He thought about it for a while, and then ignored the matter, anyway, as long as it didn't completely evacuate, he still had a chance.

Han Feng continued to absorb the demonic qi in a big gulp, and broke through the bottleneck of the middle stage of the knot pill with his heart, causing the ninth layer of golden diaphragm to vibrate, crackling and crackling, like a drum, roaring non-stop.

It's a pity that he held on for more than an hour, but it was still to no avail, the ninth layer of the golden diaphragm was so solid that even the various forces of thousands of troops could not break through.

At this moment, the remnant talisman seemed to have lost its patience, and suddenly put away all the white light, and disappeared without a trace in Han Feng's soul sea, completely hiding.

Han Feng was shocked, shouted, and hurriedly took out the broken sword, injected soul power, and let it emit a blazing light, protecting himself and blocking the rolling demonic qi that was submerged.

"Puff puff ......"

There was a slight strange noise, and those demonic qi adhered to the sword, constantly seeping in, like a spring breeze and drizzle, quickly breaking through his defenses.

Han Feng was extremely angry, but he didn't lose his mind, he ran the Spirit Alchemy Vajra Technique, opened his mouth and inhaled, inhaling those filaments of demonic qi into his body, and quickly turning them into various powers, some of which were used to infuse into the broken sword to enhance its defensive power, and some of which were used to impact the ninth layer of golden diaphragm.

After a period of scramble in the early stage, after more than ten breaths, he successfully stabilized his body and coordinated the inside and outside in place, neither being overwhelmed by the huge mass of demonic qi, nor stopping the impact of the bottleneck in the middle stage of the knot.

Moreover, he also had an unexpected joy, without the filter of the residual talisman white light, the purity of the demonic qi he absorbed was higher, and the special power transformed through the alchemy vajra technique became stronger, and under the impact like an ocean, his ninth layer of golden diaphragm gradually became thinner, and the luster also dimmed a lot, and it would not take long to break it.

Han Feng's tense nerves eased a little, he took a deep breath, and swallowed a large amount of demonic qi again, now he couldn't count the amount of demonic qi he absorbed, in short, it was a sea amount, almost comparable to the remnant talisman.

But the amazing thing is that his body does not have the slightest abnormal phenomenon of demonization, and still maintains the complexion of ordinary people, but it has become slightly darker, no longer so white as jade, and when he moves at will, he feels that there is an inexplicable force circulating, as if he can break the void and fight against heaven and earth.

He was completely unaware of his own changes, and he was still fully engaged in breaking through the bottleneck of the mid-stage of the Yudan.

In fact, at this moment, his breakthrough had indeed come to an extremely critical point, and he went all out to mobilize most of the strength in the group to rush towards the ninth layer of the golden diaphragm.

Finally!

With a snort, this layer of golden diaphragm was finally broken, and a strange power was fed back, which filled his whole body in an instant, making his mana agitate, and the dantian continued to expand outward, and in just a few breaths, it expanded more than doubled, and finally fixed at two thousand miles, the light inside it shone, and the mana continued to flow.

As for his Heavenly Dao Golden Pill, it was a little bigger, and the auspicious clouds around him also became a little more, and from time to time there were golden lightning flashes, looking amazing.