In the middle state of Qi Kingdom, outside the entrance of the One Yuan Secret Realm, the remaining few Yuan Infant Stage monks were looking up at the sky, and the original cloudless sky was over, and at some point, there was a large dark cloud, and this area became extremely dark.

However, these dark clouds seem to have lost some cohesion, and the pitch-black clouds are gradually dissipating, but despite this, the destructive power exuded inside still terrified the people below.

"It's a bit like the Transformation Thunder Tribulation, but the aura is much more terrifying, its direction is facing the One Yuan Secret Realm, could it be that some top-level demon beast has broken through to the eighth level in the secret realm?" Qian Jingshan muttered.

Xu Junwen was hovering beside him, frowning lightly: "As far as the concubine knows, the demonic beast broke through to the eighth level and did not transform into a human form, and the demonic qi environment of the demonic beast in the secret realm may not be able to cultivate." ”

Qian Jingshan shook his head and said, "Although there are many pure-blooded demonic beasts in the secret realm, there are still many demonic beasts of blood, and it is also possible to trigger the transformation of the thunder tribulation. ”

"It's a pity that the one-yuan secret realm seems to be able to isolate the induction of the Heaven and Earth Thunder Tribulation, and the demon beast can't really break through without the baptism of the Thunder Tribulation. ”

Xu Junwen sighed and said: "This thunder tribulation looks so powerful, and that demon beast is afraid that it is also amazingly qualified, but it's a pity ......."

......

On the other side of the entrance to the secret realm, Lu Kun and Huang Xiaoyun were suspended in mid-air, they looked at the calamity clouds that were gradually dissipating in the sky, although their faces were expressionless, but they were excited in their hearts.

The physical cultivation disciples had been in the secret realm for more than a month, and the aura of the cloud robbery was even bigger than that of Huang Xiaoyun and the others back then, which was obviously triggered by Xiao Jin's successful breakthrough.

As Lu Kun deduced, the One-Yuan Secret Realm can isolate the Heaven and Earth Thunder Tribulation.

What this meant to the Refining Pavilion was clear in their hearts.

If the Bone Treasure Dacheng's physical cultivation breaks through in the One-Yuan Secret Realm, it is equivalent to postponing the physical cultivation thunder tribulation for a year, and as long as he does not use all his strength to urge the magic energy in this year, he will have enough time to familiarize himself with the physical body source power and simulate the physical cultivation combat technique.

After leaving the secret realm, the chance of success of the tribulation increases greatly, in other words, this Yuan secret realm is a holy place for physical cultivation and tribulation!

Lu Kun looked up at the dark clouds above that had dissipated, and he already had a plan in his heart.

Everything that can increase the number of bone transformation stages is something that the Body Refining Pavilion is determined to obtain, and after three hundred years, there is no need for outsiders to participate in this secret realm.

"Xiao Jin has successfully broken through, and the next thing is up to the other three little guys. ”

He whispered a few words in his heart, and then sank his mind back into his body.

......

Now, more than eighty years have passed since Lu Kun returned to the southwest, and over the years, he has spent almost all of his time in retreat, and his cultivation has progressed faster than he imagined.

Originally, Lu Kun thought that the amount of internal organs that could hold life force with ten percent of life strength was only the total amount of the physical body at that time, and with the improvement of life force, the proportion of internal organs would gradually decrease to ninety, eighty, and even fifty.

But who knows, ten percent of the strength of the internal organs is proportional, that is to say, no matter how much his life force increases, the internal organs will be fully collected and can be fully accommodated.

As a result, the greater the reserve of life force, the faster his cultivation speed, and this energy is increased by absorbing essence blood, and with the increase in the concentration of essence blood in the middle stage of bone transformation, the cultivation efficiency is not the same.

Lu Kun cultivated his life force to the limit more than ten years ago, and his stock doubled, but the strength of his blood increased, and he only reached the limit a year ago.

Today's blood, like a rushing wave, rushes in the veins, and can even make a roaring tsunami.

Unlike the muscle strength changes at the beginning of bone degeneration, the concentration of blood is twice as high.

Judging from these aspects, Lu Kun has reached the peak of the middle stage of bone transformation, although his strength has not increased much, and his blood cannot store magic energy, his continuous combat effectiveness has been greatly enhanced.

If he was slightly overdrawn from his internal organs, he would even be able to hit the maximum power of the Demon Dragon Blade twice, and at the same time, the continuous defense of his physical body would be even more amazing, and facing the Transformation Stage Monk again, Lu Kun's confidence would increase a lot.

"The opportunity for blood cultivation is in the tendons, but the breakthrough point that is transformed into bones is the bones and joints of the whole body. ”

More than 200 bones in the human body are connected by joint points, but some are moving joints, some are static joints, there is a layer of cartilage between these joints, reducing friction between each other, its strength is much more loose than bone dense and loose, and it is most suitable to become the entry point of blood to bone.

For the blood to be transformed into bones, it is impossible to directly turn into a hard bone dense, it must penetrate through the joints, and then change through the transformation method that he comprehends from a demon ape.

If successful, the blood flows inside the bone, gradually transitioning from the relatively soft cancellous bone to the hard dense bone to achieve bone enlargement.

According to Lu Kun's derivation, after the breakthrough, the blood can even temporarily grow bone spurs with bone joints as nodes.

"Although I have a clear idea, my bones are too strong......"

Lu Kun showed a little helplessness, he tried a breakthrough not long ago, but it ended in failure.

Blood flows smoothly from the joints to the bones, and in the process of transforming the bones, it is hindered by the silver dragon meteorite iron in the bones.

This material increases the hardness of the bone treasure, which can squeeze and crush the bone in the process of transforming the blood into bone, causing the new bone to not be able to make a row.

Lu Kun was distressed in his heart, the Silver Dragon Meteorite allowed him to cast the Law Aspect Heaven and Earth in the middle of the bone transformation, enhancing the bone defense, although it enhanced its combat effectiveness, but it also made it much more difficult to break through.

"If the blood can be strengthened by two percent, it is possible to break through the squeeze of the Silver Dragon Meteorite and grow a new bone body, but now, even if you cultivate in the state of the Demon Ape Transformation, the blood will not be able to improve by a single bit. ”

"The flesh and body are integrated, and the blood refers to the strength of my bones themselves, and the part blessed by the silver dragon meteorite does not diffuse to the blood. ”

"For now, we can only find a way to increase the strength of the blood with the help of external forces, but what can strengthen the blood......

Lu Kun was suspended in mid-air, lost in thought.

......

Time passed slowly, and after about half a month, a thunderclap in the sky woke everyone at the entrance of the secret realm, and at the same time interrupted Lu Kun's thoughts.

A cloud of calamity, much smaller than before, slowly converged in the sky above the secret realm.

"Another disciple has succeeded!" he had just said in his heart, when two more thunderous sounds sounded in the sky.

Several thunderous sounds were endless, and the entrance to the one-yuan secret realm below was banned, and a bright silver light flashed, and a lot of demonic aura inside was forcibly drawn out by the power of the cloud robbery, converging into the air.

When Lu Kun saw this, he was stunned for a moment, and then his eyes flashed with surprise: "Good guy, all three of them have succeeded!"

Huang Xiaoyun on the side trembled with excitement, with the qualifications of these three disciples, plus more than nine months of time buffer, the possibility of surviving the thunder tribulation was extremely high.

This means that there will be three more bone transformation stage body cultivators in the Body Refining Pavilion!

Lu Kun's lips moved slightly, and his divine sense transmitted: "Xiaoyun, you rush back to the Body Refining Pavilion now, let Brother Yue and Fairy Fang Yuan come, and when these disciples leave the secret realm, the Heavenly Tribulation will come again, and we will protect the Dharma together!"

"Yes, Master!"

Huang Xiaoyun's excited expression couldn't be concealed, and the demonic energy in his body surged, directly turning into a sword light and shooting towards the south.

The abnormal movement of the Thunder Tribulation in the sky, as well as the strange behavior of the two people in the Refining Body Pavilion, attracted Qian Jingshan and Xu Junwen to look over, they looked at each other, and couldn't help but control the light and fly towards Lu Kun......