On the backshade mountain, Ning Xin put her divine sense to the maximum, cautiously climbed on the dangerous peaks, and from time to time there was a sound of ghosts crying and wolf howls in her ears, which made her get goosebumps.

After leaving the underworld, Ning Xin had been in the village at the foot of Beiyin Mountain for more than a year, during which she earned Yin Stones by picking Yin plants on the mountain and hunting some ghost beasts.

During this period, Ning Xin had always wanted to find some soul plants, but as far as she knew, except for a few particularly dangerous places in the underworld where there were soul plants and soul fruits, their shadows were rarely seen in other places.

It was precisely because of the rarity of soul plants that Ning Xin was even more curious about the old man in the tavern, and the old man had always given her a mysterious feeling, and she thought that he could make wine containing soul power, which could be seen that the old man was definitely not as simple as it seemed on the surface.

Through this period of time to collect and sell Yin plants, Ning Xin clearly knew that things like elixirs and wine containing soul power were very scarce like those in the cultivation realm, and whoever had them had to hold them tightly in their hands, but this old man openly took them out and sold them, which was too confusing.

"Ning Xin, have you picked any Yin Plants?" Yin Hong, the owner of the Yin Plant Shop, immediately asked with a bright smile when she saw Ning Xin coming.

"This time, I picked two hundred-year-old Yin Flowers, it took me a lot of effort, Sister Hong, you have to give me a good price. With that, Ning Xin took out the two jade boxes and handed them over.

"Hey, look at what you said, when did I not give you a high price?" Yin Hong quickly took the jade box and carefully watched the quality of the yin plant, "Yes, it is a hundred-year-old yin flower, and the rhizomes are very intact." In this way, how about I give you a hundred Yin Stones for two?"

"Okay, I have some other low-level Yin plants here, do you want them?"

"Of course!"

While the boss was inspecting Yin Zhi, Ning Xin looked at other things in the store, "Sister Hong, what is this?" Ning Xin asked, pointing to a one-meter-long piece of gray wood.

"This is the thorn mulberry wood that refines the flagpole of the array flag. Yin Hong looked back and said, "No other use." ”

"How do you sell it?" Ning Xin took the wood in her hand and looked at it.

"Do you want to?" Yin Hong saw that Ning Xin's face was a little moved, her eyes flickered, and she asked tentatively, "Sister, do you still refine the array flag?"

"I just wanted to ask!" Ning Xin said lightly.

"If you want it, give it to the fifty yin stones, this thorn mulberry wood is not good, and I also received this by accident. Seeing that Ning Xin didn't want to say more, Yin Hong didn't continue to ask. After dealing with her for more than a year, she still knows Ning Xin's temper.

"Then thank you!" Ning Xin put the thorn mulberry wood into the storage bag, what she was best at was alchemy and formations, but she felt that this underworld was useless.

Alchemy, the conditions are not available, so far she has not practiced any exercises in the underworld, the exercises here are all by absorbing yin qi to increase cultivation, somehow, Ning Xin is a little repulsed, so she can't refine the elixir that the underworld cultivators need.

If you want to refine an elixir that increases soul power, the soul plant is hard to find, so this alchemy can only be shelved.

Now there is only the formation left, fortunately, she hunted a lot of ghost beasts before, and she kept the ghost beast skins well, and did not take them out to sell, and now with this thorn mulberry wood, she can refine the formation flag.

She had learned a variety of Array Array from the fusion array given by her master, and she had almost figured out the principle of the Array Flag Array, plus the soul extraction array she had cracked before, so she should be able to refine some soul arrays!

"It's good if you pick more high-grade spirit plants and sell them to me next time! After deducting the fifty Yin Stones, these Ninety-eight Yin Stones are your reward this time. ”

"Then I won't bother you!" put away Yin Shi Ning Xin and left.

After Ning Xin's figure disappeared, a male cultivator walked out of the shop, "Looking at her appearance, she should know the formation." ”

"I also need to say that this girl is not an ordinary person, almost all of the high-level spirit plants in my store are provided by her, what kind of place is Beiyin Mountain, you can't get out without some strength. ”

"If she really understands formations, you can recommend her to... ”

"Stop, warn you, don't mess with her, she's not easy to mess with!"

"Didn't I think that if we had a good credit for the family, wouldn't we be able to go back?

"Hey, don't act rashly, wait until I ask her what she means!"

After Ning Xin left Yin Hong's shop, she went directly to another shop, and spent almost all the Yin stones on her body to buy a fire crystal stone of not very good quality and a second-hand refining furnace.

After returning to the small courtyard where she lived, Ning Xin casually arranged the forbidden ones, and went into the room to prepare to refine the array flag.

Soul power can ignite the fire crystal, she discovered this when she was studying the soul drawing array, the flames caused by soul power are a little white, and there will be a trace of soul power left in the things refined.

After putting the low-level ghost beast skins into the refining furnace first, Ning Xin began to refine them, and after countless experiments, after exhausting the ghost beast skins she had saved this year, she was able to refine more than twenty flags.

Looking at the flag flowing with silver light, Ning Xin smiled, as long as she could arrange the formation in the fight, then she could be much easier, and at the same time, she didn't have to worry about consuming too much soul power.

There are a lot of lonely souls and wild ghosts in this underworld, and every time you encounter them, you will always be very embarrassed, if there is a formation to trap them, you can break them individually!

After refining the flag, Ning Xin began to cultivate the Divine Soul Decision, and only after the soul power was restored did she start refining the flagpole, and during the refining process, Ning Xin was very careful to avoid wasting as much as possible.

A few days later, Ning Xin successfully refined hundreds of flagpoles.

After that, Ning Xin went to Beiyin Mountain a few more times, specifically to hunt ghosts and beasts, and there were still too few flags. There will definitely be damage when the flag and flagpole are refined, and there will be waste in the process of researching the formation, so she needs to be prepared.

After refining hundreds of flags, Ning Xin began to refine the array flags, and after countless attempts, in the end, she successfully refined fifty blank array flags. Although the success rate was only half, Ning Xin was quite happy.

The first soul array that Ning Xin studied was the Soul Gathering Array, because the Ancient Spirit Gathering Array had been discovered in the Cloud Palace, this formation was the most thoroughly studied by her, and it was also the most successful formation refined, according to the principle of the Spirit Gathering Array, Ning Xin used it on the Soul Gathering Array.

Now Ning Xin urgently needed soul power to cultivate, so when she studied the Soul Gathering Array, she was very cautious, she was not sure if these fifty blank array flags could develop a complete Soul Gathering Array.

Seeing that one array flag after another was destroyed, Ning Xin's spirit was highly tense, and the sooner she developed the Soul Gathering Array, it meant that she could improve her strength earlier, and she would be able to go to Ghost Domain City earlier.

At the beginning, in order to reduce the damage of the array flags, Ning Xin arranged the soul gathering array according to the principle of the current cultivation realm spirit gathering array, so that only five blank array flags were needed each time, but after three attempts, all three times failed!

In the end, Ning Xin had to grit her teeth and start trying the principle of the Ancient Spirit Gathering Array, but this time she needed eight blank array flags, and when she saw that the eight array flags were scrapped at the same time, Ning Xin was a little deflated in her heart.

Looking at the remaining seventeen blank array flags, Ning Xin repeatedly recalled the previous failures, and continued to study the principle of the Spirit Gathering Array for a long time, when suddenly a flash of inspiration flashed in Ning Xin's mind.

Today's Gathering Array is arranged according to the Five Elements Aura, and the Gathering Array in ancient times was arranged according to the Five Elements Aura plus three kinds of aura: wind, thunder, and ice, so should the Gathering Soul Array be arranged according to the Three Souls and Seven Spirits?

After thinking of this, Ning Xin boldly tried, the human soul is composed of three souls and seven spirits, this idea should be correct, if it hasn't succeeded, it's a big deal that she is collecting ghost beast skins and thorn mulberry wood!

Ten array flags flowing with silver light formed two figures, the outside was a circle composed of seven array flags, and the middle was a triangle composed of three array flags, and the two figures were closely connected with each other.

As soon as the Soul Gathering Array was completed, Ning Xin sensed that there was a fluctuation of soul power around her, which made her quickly withdraw from the Soul Gathering Array, although there were no powerful people around this village, she still had to be careful.

Putting away the destroyed array flags, Ning Xin quickly flew towards Beiyin Mountain, she couldn't wait to try the effect of watching the soul gathering array.

It didn't take long for Ning Xin to come to a cave in Beiyin Mountain, the yin qi in this cave was very thick, and there was originally a powerful ghost ghost living in it, but she was killed by Ning Xin, and she was also seriously injured that time, and it took several months to recover.

Since then, the cave has been empty, and it is estimated that the ghosts in the vicinity are afraid of this ghost, so they dare not come here.

This is cheap Ning Xin, every time she enters the mountain, she will cultivate here for a period of time, the yin qi here is thick, and the speed of absorption of soul tree seedlings should be faster.

The reason why I chose this place this time is because places with strong yin qi often breed some innate ghosts, which makes these places contain more soul power.

Quickly arranging the soul gathering array, Ning Xin stepped into the formation, and it didn't take long for the soul power to continue to rush to her, after feeling the continuous fluctuation of soul power, Ning Xin was overjoyed, looking at the effect of this soul gathering array was good!

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