After returning to the ancient castle, Feng Ruo hurriedly returned to his quiet room, although the cause of the battle just now was very depressing, but his harvest was not small, in addition to the highly poisonous tail needle, and the silver armor spider that feasted on it, the most important thing was that he found the yellow flowing clouds that evolved from the positive and negative mountain formations.

For the yellow flowing cloud, Feng Ruo thought about it for a long time, and finally attributed the reason to the depiction of the mind, you must know that when other cultivators arrange the formation, they all use various instruments, so the array eye is also naturally attached to the carving instrument, so in this way, the person who arranges the formation naturally can't sense that kind of strange situation.

However, Feng Ruo's arrangement of the formation was mainly based on the depiction of the mind, which caused the array eyes to attach to his body, so that all the essence of the Five Elements Stone of the formation could be absorbed.

And if it is accurate, then Liuyun should also belong to the category of positive and negative mountain formations, but it is likely that the range of defense is small, which will have such a strong defense and rebound ability.

It's just that in real battles, this method is very inconvenient, and the cost is also very high, every time you want to form that kind of yellow cloud, you need at least twenty breaths, and this time is enough for the enemy to carry out countless means.

In addition, the yellow cloud lasted too short, with less than ten breaths, so he couldn't prepare before the battle.

In general, this yellow flowing cloud is really the existence of chicken ribs, and it can only be used under specific circumstances, and the price of each use is sixty-four earth surname Five Element Stones!

However, Feng Ruo also thought of a possibility because of this, that is, since the positive and negative mountain formations can be used in this way, can the other three basic formations also be like this?

After thinking about it for a long time, Feng Ruo still shook his head, this method may work, but the maintenance time is too short, unless it is replaced with a low-grade or even higher-grade Five Element Stone may be effective, as for now, the consumption of the Five Elements Stone alone will make him unable to play.

"Hey, anyway, this is a good means of defense!" With a sigh, Feng Ruo took out the Wood Spirit Stone and began the cultivation of the Aoki Spirit Technique.

For more than ten days in a row, Feng Ruo did not leave the quiet room for half a step, and always remained in a state of cultivation, and now he has deeply realized the disadvantages caused by the lack of mana, and in this dangerous sea of dead wood, even if it is dangerous, it may be a small life.

Under such pressure, Feng Ruo finally got his wish and promoted his cultivation to the late stage of qi refining, of course, this was mainly because he had already promoted his cultivation to the last step before, otherwise he would not have been able to successfully advance in these more than ten days.

In the later stage of advanced qi refining, what brought Feng Ruo was not only an increase in cultivation, but also made his mana more rapid when it operated, the purity of mana increased by nearly half, and the attack power also increased by a large margin.

It can be said that in the three stages of the Qi Refining Period, there is not much difference in nature, these three stages are all aimed at increasing the amount of mana and refining purity, and finally when the overall quantity and refinement purity of mana reach a certain limit, it will naturally enter the foundation building period, in other words, the change in quantity will eventually lead to a qualitative leap!

However, in the later stage of Qi refining, as the stage closest to the foundation building period, in some aspects, it has the characteristics of the foundation building period, for example, in terms of attack, the mana output in a short period of time will increase a lot, and even the mana of the whole body can be cast in the blink of an eye, so as to achieve a terrifying height that instantly increases the attack strength by several times or even more than ten times.

It is precisely because of this characteristic that in the later stage of Qi refining, it is also possible to practice the kind of sword art or higher-level spells that require a lot of mana.

Of course, not all cultivators in the late stage of Qi refining have this qualification, which also involves precise control of mana, etc., for example, in the case of two cultivators with roughly equal total mana, the stronger must be the cultivator who is more able to control mana, because the more precise control, the less mana will be consumed!

Although Feng Ruo has always paid attention to precise control of mana, according to the situation of Zhentian Sect, he can only be regarded as medium in this regard, like that kind of frost sword qi, even if he is now in the late stage of qi refining, he can only cast ten times in a row, while a master like Jing San in Zhentian Sect can usually cast more than fifteen times.

It was precisely because of this that he tried to avoid using the Frost Sword Qi in real battles.

However, Feng Ruo himself is not without strengths, then because of the relationship between the wood spirit stones, his consumption when casting the green silk entanglement spell will be greatly reduced, and it is already very good for other late-stage Qi refining cultivators to be able to cast two or three times, but now, he can cast it at least ten times or more!

Therefore, Feng Ruo's goal now is to learn the advanced spell of green silk entanglement - ten zhang green silk!

"Knock knock!

Feng Ruozheng was carefully counting, and suddenly the door of the quiet room was knocked several times.

"Who is it?" Feng Ruo asked in a raised voice with some displeasure, he also spent the rent on living here, and now it is not due, so it is not authentic to be disturbed like this.

"Hehe! Senior Brother Feng Ruo is here, he is silent, and he has moved in here a few days ago, so he took the liberty to disturb, I don't know if Senior Brother Feng Ruo can be convenient, I want to ask for advice on the formation experience!" A clear and loud voice sounded outside the door.

"Silent, please ask for the formation? This person is really ghostly!" Feng Ruo frowned, and immediately said: "I'm sorry, I'm not free now, Your Excellency, please go back!"

Hearing Feng Ruo's words, the silence outside the door did not flinch, he laughed, and continued: "Senior Brother Feng Ruo, what is there to hide? We are all disciples of the same sect, and we have a reason to help each other, if the junior brother has any difficulties, you can raise them, and you will definitely not stand idly by! In addition, there are already several chambers of commerce here in the past two days, don't you want to come out and take a look, maybe you can find some good magic weapons." ”

"Chamber of Commerce?" Feng Ruo pondered for a moment, he didn't want to miss this kind of opportunity, but he really didn't have anything of value on him except for those low-grade Five Elements Stones, and it was useless to go.

"Hey, you can try that scorpion tail needle, this thing should have some value!"

Thinking of this, Feng Ruo also stood up, looked around, and found that most of the faint aura that had gathered in the quiet room in the past ten days had dispersed, so he relieved himself to pinch the formation and walked out of the quiet room.

Seeing Feng Ruo come out, Na Bu's eyes flashed, and then he smiled and said: "It turns out that Senior Brother Feng Ruo has been cultivating for more than ten years, congratulations!

"You're welcome!" Feng Ruo glanced lukewarmly at Na Bu Si, turned around and walked outside, now that several luminous beads had been installed in this passage, it would not always be dark.

Entering the hall, this time I didn't see the Qianshan and other women, thinking that they were all gathered in the hall outside, and the silence didn't follow, Feng Ruo just groaned slightly, and walked out.

Coming outside, it was really much more lively than last time, and there were many new faces, Feng Ruo looked around, and saw that under the huge luminous pearl in the center, three middle-aged cultivators were sitting in one direction, and there was a circle of people next to them, needless to say, these three people represented the three chambers of commerce.

However, the three of them did not have various items in front of them, but those who needed them, and then took them out of the storage belt, but they were more likely to buy various materials in the hands of the exiles.

Feng Ruo spun around, and finally stopped in front of a middle-aged cultivator with a small number of people, and handed over the poisonous scorpion tail needle.

"Poisonous scorpion tail needle, a fourth-level spirit beast, highly poisonous, can be used to refine sword weapons, the market price is one hundred low-grade Five Element Stones!"

The man glanced at it casually, and said with an expressionless face, obviously he had seen this kind of goods a lot.

"How is it possible to have a hundred low-grade Five Element Stones?" Feng Ruo was stunned, although he didn't know much about it, but he also knew that the materials from the fourth-level spirit beast were at a good price in the market, and this poisonous scorpion tail needle could be said to be the most valuable thing on the dead wood poisonous scorpion, in his opinion, how could it be worth more than five hundred low-grade Five Element Stones.

"What's impossible about this, this chamber of commerce came to this sea of dead wood, and the price is also quite large, how can the price be the same as outside!" the middle-aged man said unceremoniously.

Hearing this, Feng Ruo could only be speechless, this chamber of commerce was too dark, he wouldn't buy it at such a terrible price, so he simply took the scorpion tail needle back.

"Wait!" At this time, the middle-aged man suddenly said a word, and then solemnly inspected the poisonous scorpion tail needle, and after a long time, he said with some surprise: "This is actually the female scorpion tail needle, okay! 1,000 low-grade Five Element Stones, I accepted it!"

Before Feng Ruo could nod in agreement, a voice like thunder suddenly sounded, "A thousand low-grade Five Elements Stones?" Zhang Ye, your Northern Thai Chamber of Commerce is too dark, are you deceiving me, a Dead Wood Sea exile, who has no knowledge?"

With this voice, a tall, unruly man strode in from not far away, and this person was none other than the three giants of the Deadwood Castle.

"Little brother, two thousand low-grade Five Elements Stones, I want this female scorpion tail needle!" Na Batian patted Feng Ruo's shoulder vigorously, and said very proudly.

"Two thousand?" Feng Ruo was a little stunned, what was going on, wasn't it just a female scorpion tail needle? But the high price of two thousand was really good, how could he refuse? But just as he was about to nod his head in agreement, Qianshan's somewhat lazy voice suddenly sounded in this hall.

"Batian, you are called a deceptive and uninformed!Little brother, this female scorpion tail needle itself has no value, but this thing can lure out the seventh-level scorpion king in the sea of dead wood, but the female scorpion in this sea of dead wood is rare, so the value of this female scorpion tail needle is far more than two thousand low-grade Five Elements Stones!"

While speaking, the figure of Qianshan also appeared in front of everyone!

(Thanks for your support, well, there may be another chapter tonight!)