"Speaking of Doom Soup, naturally we have to talk about this ghost spirit stone and ghost spirit stone, the ghost spirit stone is a kind of stone bred in the place where the ghost spirit power is extremely strong in the Senluo ghost world, this kind of stone contains pure ghost spirit power, many cultivators will use this stone as a cultivation purpose, all because the ghost spirit power in this stone is not only pure, but also extremely quickly absorbed, with some extremely high-quality ghost spirit stones, one contains a huge amount of pure ghost spirit power!" Xi Xiangnan continued to explain.

Mu Fei's heart was a little hot, he had never seen the ghost spirit stone, but since this stone was so magical by Xi Xiangnan, it must be extremely precious.

But just as Mu Fei thought, although the ghost spirit stone is not rare in the Senluo ghost world, it has a great use value, so this kind of stone has been used as a currency in the Senluo ghost world, and often when trading, the quantity of this stone will be traded at the price!

"What about the Ghost Spirit Crystal?" asked Mu Fei.

"The crystal of the dead soul is a spar produced in the body of the ghost beast, the effect is similar to the ghost spirit stone, but the quality is much better, and the ghost spirit power in it is also more refined, the quality division of the ghost spirit crystal is different from the ghost spirit stone, the ghost spirit stone is divided into upper, middle and lower according to the purity and quantity of the ghost spirit power, and the ghost spirit crystal is divided into nine levels according to the strength of the ghost beast, the higher the level, the better the ghost spirit crystal. Saying this, Xi Xiangnan wiped it from the mouth of the gourd, and suddenly a black light flashed, but he saw that there was an extra black spar in his hand.

This black spar exudes a strong yin and evil aura, and a heavy coercion comes, even if it is a dead thing, but it is still extraordinary.

"This is the Ghost Spirit Crystal?" Lan Li's eyes lit up and he couldn't help asking.

"That's right, this is the ghost spirit crystal of the black wind carving, this black wind carving has reached the fourth level, so this ghost spirit crystal is the fourth level, and between each ghost spirit crystal, it is converted by ten times, so this crystal is equivalent to ten thousand first-level ghost spirit crystals. ”

"Ten thousand?" Mu Fei was speechless, and couldn't help asking, "Isn't it possible to exchange a lot of Meng Po soup?"

"Hahaha. Xi Xiangnan laughed as if he had heard some funny joke.

Mu Fei didn't know why, and after Xi Xiangnan finished laughing, he asked, "Is there something wrong?"

"Boy, three thousand Dead Soul Crystals are exchanged for ten thousand Meng Po Soup, but they are divided according to the strength of the contributors! A Ghost Venerable cultivator like me must contribute three thousand sixth-level ghost spirit crystals, or three thousand medium-grade ghost spirit stones. Xi Xiangnan said with a smile.

Mu Fei suddenly realized.

"So, if I want to exchange for Meng Po Soup, I must have three thousand first-grade ghost spirit crystals, or three thousand lower-grade ghost spirit stones?"

"That's right, if you want to exchange it for the Ghost Spirit Stone, cultivators below the Ghost Spirit can exchange it for the Inferior Ghost Spirit Stone, those below the Ghost Venerable, and those above the Ghost Spirit can exchange it for the Ghost Spirit Stone, and those above the Ghost Venerable and below the Ghost Emperor will have to exchange it for the Superior Ghost Spirit Stone. Xi Xiangnan said.

Mu Fei couldn't help but nodded, it seems that the ghost spirit stone is even rarer than the ghost spirit crystal.

However, Mu Fei figured it out in a moment, indeed, the ghost spirit crystal is a thing in the body of a ghost beast, this ghost beast can mate and reproduce, and there is no restriction of yin death, naturally there are a lot, although killing the ghost beast is life-threatening, but compared to the ghost spirit stone born from heaven and earth, it has a fatal flaw.

Because the ghost spirit stone is one less than one, and since it is conceived by heaven and earth, it is naturally not something that can be produced in a short period of time, and this ghost spirit stone is naturally more precious than the ghost spirit crystal.

Half a day later, Xi Xiangnan and Mu Fei's figures appeared in the Ghost Hell Mountain Range thousands of miles away!

Since there are no villages and towns around, and this place is also relatively remote, except for monks who come to kill ghost beasts or collect medicine, there are few traces here, so there are no demon beasts cleared by other forces, but let them grow and cultivate.

And the reason why this place is called the Ghost Hell Mountain Range is because there are all kinds of ghost beasts in this mountain range.

At the same time, the spirit grass and poisonous grass in the mountain range are also very abundant, although there are monks who come in and out to collect spirit grass all year round, but the ghost prison mountain range is so vast that many monks have not yet set foot in it.

One is that it is too remote for monks to discover, or there are powerful ghost beasts in this place, which discourages monks with limited strength.

All in all, although the Demon Hell Mountain Range is rampant with monsters and extremely dangerous factors, there are also a lot of benefits, as long as you have the ability to get the benefits.

Mu Fei's current location was on the edge of the Ghost Hell Mountain Range.

The further you go into the mountain range, the more powerful the ghost beasts become, and the refining mountain that Xi Xiangnan said is the outer periphery of the Ghost Hell Mountain Range.

There are many ghost beasts here, there are high-level ones, and there are also many low-level ones, staying here to kill low-level ghost beasts can allow Xi Xiangnan's casual cultivation to accumulate a lot of refining materials.

There are abundant spiritual grasses and poisonous grasses here, although the spiritual grass is often picked up by some lucky monks, but compared to other deep mountains and old forests, the number of spiritual grasses that exist here is definitely considerable.

This is the main reason why Xi Xiangnan chose this place as the cave house!

On the edge of the mountain range, Mu Fei and Xi went south to a smaller peak, and also found a cave halfway up the mountain.

Judging from the exit of the cave, this cave should not be small, as for whether this cave is natural or artificial, this should be the cave to the south.

"I'm going to retreat for a while, just stay around, don't try to escape, or you'll be responsible for the consequences. Xi Xiangnan glanced at Mu Fei with a scrutinizing gaze and said indifferently.

"The subordinates don't dare!"

Mu Fei lowered his head, his eyes flickered, and said respectfully.

"Hmm!" nodded, and Xi Xiangnan wanted to walk towards the cave.

"Master, slow down!" At this time, Mu Fei suddenly spoke.

"What's the matter!" With a little impatience in his eyes, Xi Xiangnan said coldly.

"Master, there are many ghost beasts in the Ten Thousand Snake Mountain Range, after the master retreats, if I encounter a ghost beast, but I don't have the means to fight it, I still hope that the master will ......" A trace of embarrassment appeared on his face, and Mu Fei wanted to speak and stopped.

"Well, you're right, I didn't think about it. Hearing this, Xi Xiangnan was stunned for a moment, and then said with relief.

"This Shadow Moon Slash and this Green Dragon Knife were used when I was young, and now I don't need them anymore, so I'll give it to you!" Xi Xiangnan flipped his right hand, and a roll of jade slips and a blue light flashing treasure knife appeared in his palm, and handed them to Mu Fei: "You practice the knife technique and this treasure knife first, if you can practice the Shadow Moon Sword Technique to a small level, you may not have the strength to fight when you encounter a first-level ghost beast." ”

"Thank you, master!" Hearing this, Mu Fei's eyes flashed and he said with great joy.

"Well, okay, don't bother me during this time. With a faint order, Xi Xiangnan slowly walked into his cave.

"Yes, master!"

Mu Fei took the jade slip and the green dragon knife, and watched Xi Xiangnan leave, his attitude was extremely respectful, but his lowered eyes flashed with endless killing intent: "One day, I want to regain my free body!"

It wasn't until Xi Xiangnan completely entered the dark cave mansion that Mu Fei carefully looked at the Qinglong Knife, the body of the knife more than three feet long was glowing with blue light, the blade was as thin as a cicada's wings, but the back of the knife was thick.

"Good knife!" Mu Fei couldn't put it down, and then looked at the jade slip, and the moment he opened the jade slip, a message suddenly came into Mu Fei's mind.

A moment later, Mu Fei closed the jade slip, and the moment he closed the jade slip, a cold voice sounded in Mu Fei's mind: "Ding, congratulations to the host for learning the Shadow Moon Slash, the proficiency is 0!"

"Lower Grade Knife Shadow Moon Slash!" browsing the content in his mind, the corners of Mu Fei's mouth had a hint of ecstasy.

Mu Fei raised his head and looked at the silver moon in the sky, the night, all the sounds were silent, and the death silence around was terrible, except for the rustle of the leaves in the breeze.

"I hope it's just as I imagined!"

Mu Fei muttered to himself, his body jumped, as if he had lost his weight, and gently landed on the dead leaves, and the dim sword light like water diffused out, bringing up a sharp sound of breaking the wind.

The Shadow Moon Slash is a low-grade knife duel, compared to other knife styles that go straight forward, with the characteristics of breaking force, the Shadow Moon Slash is more of a change, one after another knife shadows appear and appear, like the moonlight like water, outlined, condensed, and gradually formed a round of crescent.

Mu Fei closed his eyes, and the knife style he had seen before seemed to be imprinted in his mind, unable to be waved or erased.

The dead leaves fell down, Mu Fei slashed out, the blade shook lightly, bringing up a slight knife shadow, the knife was like the moon flowing water, and it fell lightly on the dead leaves in front of him, and the whole dead leaves immediately turned into fragments.

There are a total of twelve styles of the Shadow Moon Slash, and the twelve styles are gathered together to be the real Shadow Moon Slash, so the knife style must be coherent. Each sword style is interlocked together, Mu Fei remembers this sword style, but when Mu Fei first unleashed it, it was still extremely difficult, the knife style was intermittent, very obscure, and he couldn't exert the power of this sword technique at all.

When the twelfth form fell, the system's voice sounded in Mu Fei's mind: "Ding, congratulations to the host Shadow Moon Slash proficiency +1!"

The sword light dissipated, and Mu Fei showed a smile on his face, sure enough, as long as I can perform this knife style again, then I will learn this style of knife skills, and the sword realm, as long as the proficiency is reached, the knife realm will naturally improve, and everything will fall into place.

In the world of Netherworld, all skill realms are divided into beginner paths, which are integrated and perfected,*.

And when the skill enters the realm of perfection, there is still a high probability of comprehending a high-level skill.

Sweating profusely all over his body, Mu Fei spent a lot of energy on his sword skills.

"Even if it is a low-grade sword skill, if it is mastered to the realm of *, then it will be easy to kill people beyond the level!" Mu Fei's eyes sparkled, he closed his eyes, and recalled the entire set of Shadow Moon Slashes, but he had a few gains.

Opening his eyes, Mu Fei clenched the hilt of the knife and whispered, "Go on!"

A knife slashed out, and a sharp knife wind emerged, rolling up the fallen leaves all over the ground, and the fallen leaves flew, and Mu Fei's figure holding the knife flickered in it.

Compared with before, Mu Fei was a little less stiff and a little more spiritual.