Formula, formula.

After a few days, Chen Fan went crazy, and studied this mantra in his hand as if he was enchanted, and the mantra in Chen Fan's memory was only ninety percent accurate, and the rest of the place, there were always incomplete places, and Chen Fan's mind was all on it, like crazy.

If he can study this formula, Chen Fan will not be far from mastering this stone tool.

This is the most important thing in the scrative prison.

Dead leaves fly and fall.

At the dry well, Chen Fan frowned, the handprints on his hands were knotted again and again, and Chen Fan couldn't remember a paragraph in the formula, so Chen Fan had to modify this paragraph of the formula by himself.

Fortunately, this formula is not complicated, and with Chen Fan's current brain power, it is not very difficult to calculate.

After complicated calculations again and again, Chen Fan opened his eyes violently, an astonishing light shot out from his eyes, and he raised his head to the sky and let out a long roar, "It's done!"

After tens of thousands of deductions, a new mantra was successfully deduced by Chen Fan!

This time it was different from the others, the surface of the eyebrow stick revealed a burst of brilliance, but it was not bloody, and there was no bloody brilliance.

The aura emitted is also becoming more and more powerful, and this quaint taste is the real appearance of this stone tool!

"It's done, this is the real way to make the imperial stone tool!" Opening his eyes, Chen Fan's face showed a trace of fatigue but surprise, Chen Fan can perfectly control this stone tool!

As soon as the handprint was collected, the stone tool fell and fell into Chen Fan's palm, Chen Fan looked surprised, "With this formula, I can use this stone tool at least three times." ”

"It's a pity that I don't have a complete set of good stone tools. ”

Chen Fan has this formula, and the power of stone tools has been developed to the extreme, the only pity is that Chen Fan does not have a decent good stone tool in his hands.

"Looks like it's time to buy one. Looking at the eyebrow stick in his hand, Chen Fan's face was pityful.

This thing is so broken that even if it is controlled by a mantra, it won't take long for the stone tool, and its power has been greatly reduced, at best, it is just a defective product that can be used by Chen Fan to practice his hands, and it is not worth mentioning.

"The price of a stone tool is about two or three thousand ghost crystal mines, which is really too expensive. Chen Fan's eyes flashed with a hint of pain.

If there is no way, he might as well go to the depths of the secluded prison to dig up those ruins like Han Chunyuan. It's just that this probability is not high, and it will take decades at every turn.

"Brother Chen, what's wrong. Hearing the movement here, Old Ghost Xu poked his head over the courtyard wall and asked.

"Nothing. Chen Fan accepted the magic weapon, "I am practicing a mantra." ”

"Oh. Old Ghost Xu glanced at Chen Fan suspiciously, and then withdrew his gaze.

Chen Fan was satisfied, took the stone tool and went back to the house, he had mastered the mantra, Chen Fan never wanted to expose it, this is a huge secret, once exposed, it will bring a lot of unpredictable things.

Especially this is a solitary prison, and the people who are thrown into it are all some heroes, and these people do things unscrupulously.

Whatever they can think of, they can do.

Life in the mines, day after day, is extremely boring.

Chen Fan, who felt the consciousness of distress, did not stagnate because he was trapped in the solitary prison, but further studied the technique of "subtlety", and the days passed day by day, Chen Fan studied for a while, and went to Xu Laogui and others to learn from them, and asked them for this "subtle" method.

After half a year's effort, even Old Ghost Xu admired Chen Fan, this person is really persistent, with a face for half a year, and he doesn't rest at all.

Looking at his diligent appearance, there is no sign of stopping, and he is still persevering.

Consume 1,000 spirit stones every day for cultivation, the ghost crystal ore is not enough, so he uses his own inventory to come to the palace, and after half a year, he has consumed more than 1,000 ghost Xu Fan is distressed by Chen Fan.

But Chen Fan didn't seem to care about this at all, and just kept consuming it inside.

In the past six months, Chen Fan's "subtle" method has become more and more in place, and he can basically achieve 10% of the strength out, and the loss is at most 10%, and the rest is controlled and not wasted.

It is not far from the real "subtle" realm.

Even the old ghost Xu was moved by Chen Fan, and began to teach Chen Fan without hesitation, Chen Fan's practice here can be regarded as advancing by leaps and bounds, and after more than half a year, Chen Fan officially stepped into the "subtle" level!

On a certain back mountain, Chen Fan closed his eyes, wore white clothes on his body, and hunted in the breeze.

The green stubble on the scalp has grown some hair.

It has been a full year since Chen Fan was imprisoned. Chen Fan opened his eyes and his body moved.

"Brush" A black afterimage flashed out in the same place, silently, and then the black shadow was annihilated, Chen Fan appeared in front of a dead tree, and blasted out with a punch, without a trace of the leakage of the true element.

The golden true yuan in the first part of the Tai Dynasty only rushed in the meridians, and slammed into the trees with a punch, and his strength was discharged.

"Bang", but it was enough to be twelve percent of the power before, and it exploded from the trunk, and the entire trunk was instantly annihilated and turned into dust and smoke.

"Whoosh", from the side, a few red true yuan called.

Chen Fan's back arched, and the whole person was like a cheetah, jumping out, dodging the blows of these red true yuan, "whoosh", these red true elements that shot out, but without the slightest intention of stopping, shot madly at Chen Fan's back.

Chen Fan's feet sank, he raised his head suddenly, his face showed a trace of solemnity and perseverance, and his feet kicked out angrily.

"Bang", the power rippled, and several red yuan were kicked and broken by Chen Fan.

Chen Fan landed.

"Papapa", from one side, there was a burst of applause, and Xu Lao Ghost and a few others walked out, "Brother Chen, from beginning to end, between breaths, between shots, there is no trace of true essence leaked, congratulations, you have truly reached the realm of 'subtlety'." ”

Old Ghost Xu looked at Chen Fan with emotion, as if looking at a piece of jade, "It's really unimaginable, how you were thrown into prison." ”

"Do you think it's you?" Han Chunyuan laughed, took a sip of wine and said, "I was optimistic about our Brother Chen early on, but I didn't expect that from beginning to end, it has only been half a year, and Brother Chen has mastered this 'subtle' realm, and in this secluded prison, the progress is still so fast, except for the one in the City of Immortality, I can't think of anyone else." ”

"Thank you for your guidance these days. Chen Fan walked out, exhaled a breath of turbidity, and then said with a suspicious look in his eyes, "Who is the person you talked about before?"