The water of the Heavenly Pool in the Dark Blood Pool is a collection of the aura of heaven and earth, not to mention far away from the hustle and bustle, coupled with the secret method of the Dark Blood Pool, it can be described as the source of purity.

And this pure water may not be appropriate to use on other seal arrays, but it is best to use it as a drawing material for purifying seal arrays in Wu Wei's opinion.

The right hand leaned slightly, poured out some water droplets from the porcelain vase, and dipped them on the fingertips, the power of the seal was slightly condensed, the divine consciousness danced, and the copper-yellow divine consciousness copper wire was quietly scattered, like the catkins fluttering in the air by the lake, but in the fluttering, it was full of strength.

Wu Wei flicked his fingers, using his fingers as a pen, turning water into ink, dipping the water in the pool of blood, dancing wildly like thunder and lightning, drawing a seal rich in Tao Yun and law, and then constantly combining it into a seal array in the rapidity, for the past three months, he had to ponder it several times almost every day, and now, he has reached the point where he knows this purification seal array well, every day, it is such a step by step improvement, integrating his own consciousness and thoughts into it.

A moment later, on a scroll, an extremely complex ground level printing array like a miniature carving was finally completed, carved into the scroll, and the printing array scroll made in this way, as long as the printing force is injected, it can be used repeatedly ten times, which is really convenient. At the moment, Wu Wei was also sweating profusely, but his face was full of joy.

Because as early as when he came into contact with this seal array, he had an idea to use this ground level seal array to refine the blood crystal into the blood source crystal.

The biggest difference between the blood crystal and the blood crystal is that the power content of the blood crystal is much higher than that of the blood crystal, and the impurities contained in the blood crystal are far greater than the blood crystal, and it is precisely because of the impurities or toxins in it that the blood crystal is difficult to be absorbed by its practitioners, so the value of the blood crystal is far lower than that of the blood crystal.

So from the moment he came into contact with this seal array, Wu Wei had such an idea. At first, he tried to use all kinds of low-grade herbs to achieve purification, although the seal array was not perfect, but with the increasing proficiency and the perfection of the seal array, the purification and extraction degree of the material is also getting higher and higher, and today after completing this improved printing array that can be called perfect, he finally began his own attempt.

The SCP content of ordinary blood crystals is usually about 780%, while the SCP content of blood crystals is more than 90%, and the gap between 80 and 90 is the dividing line between the two.

What Wu Wei has to do is to increase the impurity extraction degree of blood crystals by 90%.

Speaking of doing it, although his body was a little tired, but when he thought of this, Wu Wei felt a lot more energetic, and his right hand rotated slightly, and he took out an ordinary blood crystal and placed it on the scroll.

The gestures of both hands are slightly blooming, and a divine sense and seal power are entered, and the method of printing the array has its own method, and even some of the printing arrays also contain special methods, which can only be opened by those who draw the array.

When he was in the Qingyuan Pavilion, Wu Wei had read a lot of cases about the purification and purification of blood crystals, about the purification of blood crystals, he was not the first to think of it, and it can even be said that most of the sealers had similar attempts when they came into contact with the purification seal array at the beginning, but in the end, they all gave up, it was very simple, because making a seal array that can purify blood crystals can be said to be worth the loss in terms of manpower and material resources.

Even one of the most successful examples could not be widely circulated in the world due to various factors, because that seal array already belonged to the category of the Heavenly Rank Seal Array, so it seemed that in terms of efficiency and application, it was still inferior to the current Earth Rank Seal Array.

It can be said that Wu Wei is standing on the shoulders of giants at this moment, and the materials he uses to make the seal array passed on to him by Gu Sheng have reached the most perfect state, thinking of this, Wu Wei can't help but feel deep admiration in his heart.

The seal qi entered the array, the mantra was whispered, and in the hut, bursts of red light suddenly dispersed, shining on the entire hut.

"Whew!" Suddenly, I heard a crisp explosion, but I saw that the piece of blood crystal on the scroll began to slowly separate, they were like melted resin, within the blood crystal, all kinds of impurities slowly began to automatically divert, and finally turned into two pieces after a while, one side is emitting dark impurities, dark red color, it should be a collection of various impurities are toxins, and on the other side, it is like a blood-red gemstone, shining, transparent and bright, although the volume at the moment is only two-thirds of the original size, but the power it contains, it can't help but feel a warm and warm feeling。

"It's done?" The corners of Wu Wei's mouth turned up slightly, and he held the blood source crystal in his hand, which seemed to have a little warmth, and the power content of this blood source crystal faintly reached more than ninety-five percent.

The hundred-meter street under Ling Ri Peak is crowded with people because it is a weekend market time.

Wu Wei and Chen Qingyu got up early in the morning, Wu Wei tossed all night, but his spirit was not bad, Chen Qingyu's purpose was to find some charms or other materials to prepare for their exploration trip.

"How much does this sage cost?" At a small stall, Chen Qingyu grabbed a handful of sage, counted a finger, and smiled lifelessly, as if he could cut the price with that look.

"No, is this sage worth this number?" the man shook his head and held out two fingers.

"Two Blood Source Crystals, are you going to grab them?" Chen Qingyu let out a strange cry, causing everyone to look sideways.

"Don't say it, it's really only this price, and you don't know, the eight wild tigers ran around like crazy a few days ago, and the sage grass in the back mountain was ruined to the point that there was not much left, but these are still the stocks I left in the past. ”

Sage, mainly used to detect alien beasts, this strange grass, is particularly sensitive to the breath of alien beasts, within a certain range, the more powerful the alien beast, the stronger the light it will emit.

Chen Qingyu was unwilling and was about to bargain.

Wu Wei pulled it aside and whispered a few words, hearing Chen Qingyu's eyebrows slightly raised, and he looked at his expression in disbelief.

"Okay, deal!" After the two finished communicating, Chen Qingyu shook his hand and threw two pieces of blood source crystals, which was regarded as a benevolent business, seeing that Chen Qingyu suddenly became so refreshing, the eyes of the surrounding stall owners shouted as if they were charged.

Looking at Chen Qingyu, who was helpless surrounded by the crowd, Wu Wei escaped a few steps, his purpose was much clearer, the first one was to exchange blood crystals, the importance of blood crystals in Qingyuan Gate was extremely low, just like on the black market in Qingyuan Town, a piece of blood source crystal could fry thirty blood crystals.

After all, instead of holding a large number of blood crystals that are useless for cultivation and can only be exchanged for some food and herbs, it is better to have more blood crystals that can be used for cultivation.

Wu Wei turned around twice, and finally stopped at a disciple stall in Shadow Capital Peak, he had been paying attention to this stall for a long time, because under Shadow Capital Peak, there was a blood crystal mine, but this mine was not open to other peaks, so it became a source of extra money for disciples of Shadow Capital Peak.

"How much, how much?" The man looked at Wu Wei in disbelief, as if Huang Yi had misheard his ears.

"How about exchanging ten blood crystals for three hundred blood crystals?" Wu Wei's voice was very low, and he didn't have any expression, but in the man's eyes, he looked like a God of Wealth.

"But, yes," it was rare to meet a fool, no, God of Wealth, the man smiled from ear to ear, and immediately clapped, "I still have a lot here, do you want to take a look at it." ”

"Forget it for today, but if there is a better blood crystal in the future, I will come back to you. Wu Wei shook his head helplessly, he wanted to buy it, but it took a whole night, and there were only a few pieces of blood source crystals on his body.