According to this speed, it will not take much time for more than a thousand energy sources in the body to be turned on.

According to the records of the "Taiping Cave Sutra", when all the energy sources in the body are successfully opened, and the power of all energy sources is stimulated, it can be condensed into a "black iron battle body", and the combat power and defense power will be greatly improved.

Occasionally, Chu Nan would also observe the pair of grandfathers and grandsons from a distance, and found that most of them were picking herbs and boiling various herbs, not far from them, there was a small village, these villagers were very familiar with them, and would often come to bring them some food, among which the villagers brought the strange beasts raised in the village to assist in hunting and were injured, and asked the old man to heal.

Chu Nan slowly saw that this old man was a doctor who was very proficient in medical skills, and the main object of treatment was all kinds of foreign beasts, much like a veterinarian on the earth.

Five days later, Mu Rufeng, the leader of the mercenary warband, led a group of people to search through the guò dragnet, and finally arrived here.

Chu Nan fell off the cliff, the tracking pollen was suddenly gone, the red-nosed dog couldn't smell Chu Nan's whereabouts, Mu Rufeng and the others had no choice but to work hard to find a way to go down the cliff, and then guessed that Chu Nan could go down the river, but the area on both sides of the river was too wide, and Chu Nan could drift anywhere.

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Although he knew that it was hopeless, Mu Rufeng, who was unwilling, continued to search on both sides of the river, hoping to find something, because the loss of the mercenary war group this time was too heavy, so heavy that Mu Rufeng couldn't bear it, and finding Chu Nan was his only hope.

As for some of the other forces, they began to slowly lose patience and dispersed one after another. After all, they have nothing to lose.

I saw the herb garden here and the group of strange beasts guarding the garden. Mu Rufeng, who was almost a little desperate, barely poured out some hope again. He thought about the identity and abilities of the old man who lived here.

In the entire Taiping County, when it comes to understanding foreign beasts, no one can surpass this old man.

Mu Rufeng visited the old man and was very polite, but of course he didn't ask for the clues he wanted to get, and left disappointed.

Chu Nan was very shocked when he saw Mu Rufeng and the others, thinking that they would immediately find themselves catching up. So he slipped away quietly, but he never expected that Mu Rufeng and the others just went to visit the old man, and then left, not knowing their hiding place as before, and then catching up.

This made Chu Nan surprised, and finally confirmed that although he didn't know what the reason was, it was certain that Mu Rufeng and the others could not know their whereabouts at any time as before.

This discovery. Chu Nan finally breathed a sigh of relief.

This area is too vast, and there are only a few dozen people in the mercenary warband. If they don't know where they are at all times, then it will be difficult for them to find out where they are hiding.

In the next few days, Chu Nan still didn't stay away, just found a place in the surrounding area to cultivate silently, and occasionally took a look at the lives of this pair of grandchildren, as well as those strange beasts who got along happily, and there was a faint envy in his heart.

After all, the days of a lonely cultivation alone are too lonely.

The most unbearable thing for Chu Nan is undoubtedly when Xiao Ni cooks every day, and the smell of the food makes Chu Nan's saliva flow all over the ground.

Although Xiao Ni is young, her cooking skills are quite good, and although Chu Nan can cook meat over an open fire, she can't get these exquisite meals at all.

On this day, smelling the aroma of the rice man's food from a distance again, Chu Nan finally couldn't help it, the cat went into the deep forest, and soon caught a white-headed fox, twisted its neck, and then carried the white-headed fox and appeared in the herb garden.

Seeing Chu Nan, the other beasts guarding the garden were a little nervous, especially the unicorn beast that Xiao Ni called "Xiaobai", even more nervous.

Hearing the commotion outside, Xiao Ni and the old man walked out and saw Chu Nan again, and both the ancestors and grandchildren were a little surprised.

Chu Nan placed the white-headed fox in his hand on the ground, and then pointed to the tempting meal.

The old man understood, and was surprised and amused: "Do you want to exchange this bald fox for these meals?" ”

Chu Nan nodded, praising in his heart that he was worthy of being a veterinarian, and he really knew them very well.

A strange beast that likes to eat human food, the old man was also a little surprised, but he still smiled and nodded in agreement.

Chu Nan swept away the lunch that originally belonged to his grandfather and grandson, and then licked his lips, regretting that it was too little, not enough for him to fill his stomach, and his amount of food was very large.

The old man and Xiao Ni both looked at Chu Nan blankly.

Chu Nan suddenly smiled a little embarrassed, scratched his head, felt a little embarrassed, and quickly left again.

The old man shook his head, feeling that this strange beast was different from all the strange beasts he had come into contact with before, and it was really rare.

Xiao Ni was very excited because she thought Chu Nan was very interesting.

However, their lunch was gone, so they had to make it again.

In the following days, Chu Nan dug a cave in a hidden place not far from here to live temporarily, and his main energy was used to cultivate the "Taiping Cave Sutra", and when he was hungry, he would prey on foreign beasts to fill his stomach, and occasionally he would carry more precious foreign beasts to the herb garden in exchange for a meal, and every time he ate it almost to the point that he had to swallow his tongue.

And the other strange beasts raised by the old man, every time they looked at Chu Nan carrying the captured strange beasts like a chicken, their eyes were full of fear and retreated, not daring to approach Chu Nan.

Chu Nan didn't bother to pay attention to them, although he was also a strange beast now, he never really regarded himself as their kind in his bones.

And because of the influence of the old man, Chu Nan captured some vicious beasts with a ferocious temperament and even cannibalism, so even a kind person like the old man did not stop Chu Nan from capturing evil beasts.

Soon, Chu Nan stayed here for a month, this month, he not only got acquainted with Xiao Ni and the old man, but even learned a little knowledge about medicinal herbs, and successfully opened more than a thousand energy sources in his body, including the most difficult to open the top of the head, the center of the eyebrows, the abdomen under the navel and other most important and difficult energy sources.

More than a thousand energy sources were successfully opened, and there was an endless stream of energy surging all over the body, once all of them were activated, the muscles, bones, tendons and veins of the whole body were extremely strengthened, turning into a black iron battle body, and Chu Nan's strength was at least several times higher.

Feeling the powerful power flowing in his body, Chu Nan took a deep breath and was very excited, now, if Mu Rufeng of the mercenary war group appeared in front of him again, Chu Nan was completely confident that he could completely tear him apart.

Through the "Taiping Cave Sutra", he practiced the "Black Iron Battle Body" at the first level of the Strong Body Realm, and Chu Nan was busy sensing the rainbow crystal, wanting to see if the exercises about the Strong Body Realm had appeared in it.

But what disappointed Chu Nan was that although there was an explanation of the strong body realm in the rainbow crystal, there was no exercise.

"What's going on? Could it be that my strength has not yet reached the requirements of the rainbow crystal? ”

Since there is no specific technique for the strong body realm in the rainbow crystal, and now that he has practiced the "Taiping Cave Sutra" into the "Black Iron Battle Body", if he continues to cultivate the "Taiping Cave Sutra", he can impact the second level of the "Bronze Battle Body".

However, Chu Nan did not immediately rush to continue cultivating the Taiping Cave Sutra, but took out another book of exercises to strengthen the physical realm, "Heavenly Sword Strengthening Body Skill".

Chu Nan has collected several cultivation exercises on the "Strengthening Body Realm" for a while.

In addition to the "Taiping Cave Sutra", there are also "Heavenly Sword Strengthening Body Skill" and "Four Turns Xuangong", as well as the "Dragon Eagle Tuna Gong" obtained from the "Dragon Eagle" Boyan Space Bag, in addition, the other two deputy leaders of the mercenary war group, the Divine Spear Fang Document and the Crazy Lion Iron Stone, also found the "Strong Body Realm" exercises, which are "Jade Ding Gong" and "Lion King Reincarnation".

With so many "strong body realm" exercises, Chu Nan is ready to cultivate them one by one, first, his cultivation speed is fast enough, second, he wants to lay a good foundation, and third, he has no higher realm exercises to cultivate for the time being.

The Taiping Cave Sutra is relatively mild, but the speed of improvement is slow, but this "Heavenly Sword Strong Physical Skill" is much more violent, but the cultivation speed is also very fast.

"Heavenly Sword Strengthening Body" needs to cut one's own body in one's mind, shatter one's body, and then be reborn in Nirvana, so that the body is constantly tempered, so that the strength of the body becomes stronger and stronger, and finally complete Nirvana, you can achieve the first stage of the "Black Iron Battle Body".

Perform up to four self-slashing rebirths to refine the "Golden Treasure Body".

However, there are many difficulties, and the average person is almost reborn after one or two self-beheading, and some people even die in this self-beheading.

Chu Nan cultivated this "Heavenly Sword Strengthening Body Skill" much faster, he sat and thought in his oblivion, his soul power was extremely powerful, and this time he used his soul power to turn into a heavenly sword and kill himself, which was much more fierce and terrifying than ordinary people.

But it's also terrifying.

Chu Nan was in a state of oblivion, only feeling that his body was shattered like glass, and even this pain seemed to be real, so painful that he almost died.

Then, in this shattered nothingness, give birth to a little spiritual wisdom, reshape the body according to the Heavenly Sword Strong Body Skill, and complete the rebirth.

When Chu Nan's martial arts were completed and the pain was gone, if he was reborn, opened his eyes, and looked at his body, he could clearly feel that his body had become stronger again, of course, this kind of change was not as strong as the first time he practiced the "Taiping Cave Sutra" into the "Black Iron Battle Body".

After all, he has already practiced the Black Iron Battle Body, and now it is equivalent to using another technique, and he has practiced the Black Iron Battle Body again, although his body and combat power have improved, but this double Black Iron Battle Body has not been particularly huge, and these are also expected by Chu Nan.

Because at the level of the "Strong Body Realm" Black Iron Battle Body, he is already strong enough, almost to the limit, and it is extremely difficult to make an inch of progress again. (To be continued......)