Under Lei Yuan's gaze, an old man in gray with half-white hair appeared out of thin air in front of him.

Lei Yuan's heart was suddenly alert, and cold sweat broke out uncontrollably, he had been staring ahead just now, but he didn't find out how this old man appeared.

Moreover, Lei Yuan found that he didn't even notice the fluctuation of the source power on this old man's body at all, as if he was an ordinary old man who had no cultivation.

But if Lei Yuan really thinks that this old man is an ordinary person, then he is an iron man!

He is also a powerhouse in the king-level realm, and it is definitely not the early stage of the king-level, because Wu Tian has never given him this feeling!

"Being able to comprehend the Quadruple Desolation, the Body Refining Pavilion has produced a good seedling, not bad. The gray-clothed old man didn't even glance at Lei Yuan, his voice was like dead wood without any momentum, "The things that can be exchanged are all on that shelf, look at it yourself." ”

Lei Yuan immediately responded and came to the bookshelf, and there were sparse things on the quaint bookshelves, but it was these random things that made Lei Yuan's heart shock.

It turned out to be a three-grade array, and even a four-rank array! And the formed three-rank crystal array was placed at the bottom of the bookshelf at random.

Lei Yuan's heartbeat accelerated, the strength of the crystal array master was undoubted, and the reason why Lei Yuan had not studied carefully in the crystal array master in the past few months was related to his time constraints, but the most important reason was that there was no crystal array spectrum for him to study and improve!

Although the Phantom Cracking Purple Polar Array was able to allow him to outline the crystal array from the Star Source Pen, the formation spectrum information imprinted into his mind was only a third-grade inferior formation spectrum at the beginning, leaving the fire array.

The array spectrum can be said to be the cornerstone of the crystal array outlined by the crystal array master, because the formation of each crystal array requires thousands of outlines, and even if there is a slight deviation in one stroke, it will lead to the collapse and failure of the entire crystal array outline!

Even the most skilled crystal array master does not dare to boast of being able to write down every detail of the crystal array without any mistakes, therefore, the array spectrum has become the key to the crystal array master outlining the crystal array, because the original record of the crystal array outline without deviation on the array spectrum every detail outlined, the crystal array master outlines according to the array spectrum, which is undoubtedly twice the result with half the effort.

Lei Yuan couldn't help but swallow a mouthful of saliva, but his eyes fell on a four-pattern Xingyuan pen full of metallic texture in the corner of the third layer of the bookshelf.

"Senior, how many contribution points does this four-pattern Xingyuan pen need?" Lei Yuan asked respectfully, the Xingyuan pen used by Qin Xiang before was also a four-pattern level, and this level was already quite high.

"Twenty million. The old man didn't look back, and said lightly.

"Twenty, twenty million!!" Lei Yuan almost didn't directly knock down the bookshelf in front of him, this Nima, is he robbing?

"Think it's expensive?" the old man's voice was a little joking, "20 million contribution points are converted into first-level dark crystals, which are only 40 million yuan, and then converted into third-level dark crystals, only 400,000 yuan, this price is out of the contribution tower, and it will at least be doubled, do you think that crystal array master, the most money-burning profession, is just a waste of fame?"

Lei Yuan laughed embarrassedly twice, after such a calculation, 20 million contribution points is indeed not too expensive, the higher the grade of something, the higher the level of dark crystals traded, like this four-pattern star source pen, if you want to buy at least three levels of dark crystals elsewhere, and 400,000 third-level dark crystals are indeed not too much.

Hey, I was complacent because I had pit a million first-level dark crystals from the Qinghe Palace, but now it seems that I am just a frog at the bottom of the well.

Lei Yuan didn't hesitate anymore, consumed 20 million contribution points to exchange for this Xingyuan pen, and after playing well, he entered the space ring.

With a move in his heart, Lei Yuan suddenly asked, "Senior, is there a flying crystal array here that can be exchanged?"

Ever since he had seen the strength and advantages of the flying crystal array in Lan Liluo, Lei Yuan had always been very envious in his heart.

The old man took out a tattered broom out of nowhere, and began to slowly sweep up the non-existent dust on the ground: "The lowest-level flying crystal array, starting with 200 million contribution points. ”

Lei Yuan almost stumbled and fell directly, and immediately remained silent.

Grandma's, 200 million contribution points! That's a full 20,000 fourth-level dark crystals! Lei Yuan finally saw the sky-high price of the high-level crystal array, and resisted the urge to expose the fourth-level dark crystal veins on his body, Lei Yuan finally suppressed the idea of exchanging the flying crystal array.

Hey, sure enough, he, a little nouveau riche, still can't compare with the little rich woman in Liluo, but he can't compare!

Lei Yuan picked up a black jade scroll array spectrum, his hands trembled slightly, because this was a fourth-grade inferior formation spectrum, and the Deserted Pavilion really deserved to be one of the four major sects, and even things of this level could be taken out and exchanged: "Senior, how many contribution points does this fourth-grade inferior level wind killing array spectrum have?"

"Twenty million. ”

Lei Yuan was not surprised this time, the formation spectrum of the same level was several times or even ten times more expensive than the formed crystal array.

"Senior, these three-grade high-grade array spectrum accumulation array ......"

"Ten million contribution points. ”

Lei Yuan's eyelids jumped, this price still exceeded his expectations, but thinking of the effect of the charging array, Lei Yuan still did not hesitate to exchange it.

Charge Array: Greatly increase the source power cultivation of the source in a short period of time, raise the level realm by at least one level, the higher the realm, the lower the effect, consume 1,000 third-level dark crystals per second, after the effect is over, the source will enter a period of weakness for at least half an hour, during which no source power can be used.

This is actually a crystal array that can improve the cultivation of the source in a short period of time! Although the side effects after using it are quite small, it is definitely an absolute weapon for killing people and selling goods at critical moments, pretending to be pigs and eating tigers.

"Senior, these three-grade high-grade formations are ten thousand thunder killing formations......"

"Eight million. ”

"The three-grade medium formation spectrum ten thousand swords killing array. ”

"Five million. ”

Lei Yuan did not hesitate to exchange these two crystal array formations, which can be described as crystal pavilion disciples' signature crystal array formations, if you want to quickly improve the level of crystal array masters, you must have enough formation spectrums to train and strengthen!

Although a full sixty-seven million contribution points were consumed on the seventh floor of the contribution tower, Lei Yuan was still refreshed when he walked out, and the harvest of this trip can be described as quite large.

exchanged the remaining 37 million contribution points, and Lei Yuan also did not keep them, because there was no interest when they were placed there.

After searching for a long time on the fourth floor of the Contribution Tower, Lei Yuan finally found a D-level superior source skill that satisfied him, the Flame Splitting Stick Duel, which was the source skill he was looking for specifically to fit his nameless giant sword, and the reason why he didn't look for those so-called heavy sword sword tricks was because Lei Yuan felt that the nameless sword was not like a heavy sword in comparison, but more like an iron rod with a sword hilt!

"It only takes 300,000 contribution points to exchange for D-level superior source skills, which is converted into 600,000 first-level dark crystals, which is quite cheap, but compared to the money-burning profession of crystal array master, it is really nothing. ”

Lei Yuan smiled helplessly, at the beginning of the Qinghe City Liuli Chamber of Commerce, the D-grade top-grade source technique Wind Thunder Shadow was auctioned to more than 300,000 first-grade dark crystals under his encouragement, and now it seems that the price is not too high.

For the remaining contribution points, Lei Yuan did not exchange for D-grade superior source skills in addition to exchanging thousands of low-grade ink jade scrolls.

Lei Yuan's existing Wind Thunder Shadow itself is a D-level superior body method source technique with a certain degree of aggression, although the Split Stone Palm is a D-level medium-class technique, but after the enhancement of the source technique mirror space, it will only be stronger than the general D-level superior source technique, plus the Flame Splitting Stick that has just been exchanged, there are already a lot of high-level source skills on his body, and Lei Yuan naturally understands the truth that greed can't chew too much.

Therefore, the remaining contribution points were all exchanged for dark crystals by Lei Yuan, and nearly 37 million contribution points were equivalent to nearly 74 million first-level dark crystals, all of which were exchanged by Lei Yuan, 400,000 third-level dark crystals, 2 million fast second-level dark crystals, and more than 13 million first-level dark crystals.

After the exchange was completed, Lei Yuan's mind was all plunged into the outline of the crystal array, and he saw the power of the off-axis crystal array, how could Lei Yuan not be moved.

Three days later, in a quiet room in the Body Refining Pavilion, Lei Yuan looked at the sword shadow scroll on the table, with a deep surprise on his face.

"It's also a three-grade medium crystal array of ten thousand swords killing array, so easy enough to succeed?"

Lei Yuan put down the silver star source pen in his hand, and the dark eyes with exhaustion flashed with excitement in the dark circles.

He exchanged thousands of low-grade ink jade scrolls, just because he expected that the next outline crystal array would continue to fail and be damaged, but he didn't expect that the first attempt to outline the three-grade medium crystal array Ten Thousand Swords Killing Array would be completed so easily and smoothly!

Thinking about how hard and torturous it was for him to use the Phantom Crack Purple Pole Array to forcibly outline the three-grade inferior crystal array from the fire array, Rao had the help of the Phantom Crack Purple Pole Array, and he had to sketch it for more than ten days before he could barely outline the fire detachment array.

But now outlining this higher-grade Ten Thousand Swords Killing Array is so easy and freehand, it didn't even appear for the first time!

"Is it that it is so simple to outline the crystal array with the Xingyuan Pen, or is this young master's talent too high?"

Lei Yuan complained rather narcissistically.

Attributing less than 1% of the credit to the Xingyuan Pen and the Phantom Cracking Purple Polar Array, Lei Yuan was ashamed to attribute the remaining 99% of the credit to his own talent.

In the blink of an eye, nearly a month passed, and within a month, Lei Yuan almost never came out of the small door again, and there were thunderous explosions in the room from time to time, which frightened Meng Lin from time to time, secretly worried that this kid would accidentally play himself to death.

And if someone forcibly broke into Lei Yuan's room, they would inevitably be frightened by the various black jade scrolls in the room that were scattered like garbage, and were filled with yellow light.

Because on these black jade scrolls, all of them are three-grade crystal arrays!

And most of them are the third-grade high-grade crystal array Ten Thousand Thunder Killing Array, as well as a small number of third-grade medium-grade crystal array Ten Thousand Sword Killing Arrays.

If the elders of the Jing Pavilion knew that this was Lei Yuan's masterpiece within a month, it was estimated that the eyeballs would fall to the ground!