The fortress was equipped with a powerful defensive circle, forming a huge semi-circular defensive shield that enveloped the entire fortress, and there was only a bloody mouth gate for people to enter and exit.

At this time, a large number of demons were walking in and out of the city gate, which seemed to be very prosperous.

Yang Xiaole landed at the gate of the city, mixed in with those demons, and walked towards the fortress.

At the gate of the city, there is also a team of demons wearing standard armor collecting entry fees for entering the city.

The currency used by the demons here seems to be energy crystals, that is, spirit stones, but they are all dark energy crystals containing rich negative energy, and energy crystals of other attributes seem to be worthless in this world.

Fortunately, Yang Xiaole owns the entire Xianxia world, and can call a large number of spirit stones, among which there is a kind of Yin spirit stone, which is actually a dark energy crystal containing rich negative energy.

In the end, Yang Xiaole handed over a low-grade dark energy crystal to the demon guards and blended into this fortress.

After entering the fortress, Yang Xiaole wandered around the fortress.

There are military camps built around this fortress, which houses a large number of demon soldiers, and around these military camps, there are a large number of shops and taverns serving the demons, and in the center of the fortress, there is a high black castle, which exudes a terrifying atmosphere, and seems to inhabit a powerful existence at the peak of a demigod.

After Yang Xiaole sensed this breath, his face changed, and he tried to stay away from the castle as much as possible.

His main purpose here was to find spiritual qualities, so he didn't want to cause more trouble.

And although he subdued Olano at the peak of the demigod, the laws that Olano comprehended were mainly the law of immortality and the law of dissociation, and he was only good at long-range attacks and sneak attacks, and he was really fighting face-to-face, which was not as good as the overlord of Chu, and although the power of the overlord of Chu was both offensive and defensive, the realm was not strong enough, if Yang Xiaole provoked the peak powerhouse of the demigod in that castle, he might not be able to please him.

Yang Xiaole continued to wander around the fortress for a while, and then walked into the largest store, with the most luxurious decoration and the most goods.

The owner of the shop is a fat-headed, big-eared demon with two short horns on his head and two pairs of bat-like fleshy membrane wings on his back, all of which are red.

Seeing Yang Xiaole walk in, the demon man immediately said with a smile: "Guest, I am Bobby, the manager of this Demon Treasure Pavilion branch, do you want to buy goods, or sell goods?" ”

The language used by this demon named Bobbi seems to be unique to this demon world, but fortunately, Yang Xiaole has the language skills to understand his words and simulate this language.

I only heard Yang Xiaole say: "I want to buy spiritual quality, do you have it here?" ”

Demon Bobby smiled and said: "You really asked the right person, in the entire Night City, only my Demon Treasure Pavilion can buy spiritual quality, but unfortunately, the spiritual material on my hand is sold out, if you want, only wait a month later, the Demon Treasure Pavilion headquarters will replenish me, or I will transfer goods to other branches of the Demon Treasure Pavilion, however, you have to pay 10 million lower grade magic crystals as a deposit first, and I can help you transfer the goods!" ”

Now Yang Xiaole also knows that the dark energy crystals are called magic crystals in this world, and ten million low-grade magic crystals are about the same as ten million energy coins.

Yang Xiaole frowned when he heard this, and asked, "Ten million low-grade magic crystals as a deposit, it's too much!" ”

Demon Bobby waved his finger and said: "Ten million low-grade magic crystals are not expensive at all, you must know that the spiritual quality is a treasure that can be encountered but not sought, you can refine soul equipment, and you can also use secret methods to integrate into the soul, and constantly enhance the strength of the soul, which is very useful for impacting a higher realm, and a standard unit of spiritual quality is worth hundreds of millions of lower-grade magic crystals!" ”

"What, a standard unit of spiritual quality will cost hundreds of millions of low-grade magic crystals?" Yang Xiaole's face changed when he heard this.

Although he was able to raise spirit stones from the Xianxia world, he had already used a lot of spirit stones before, and now although the Immortal Buddha Empire of the Xianxia world had obtained a lot of spirit stone taxes, the spirit stones he could mobilize were only more than 100 million spirit stones.

Moreover, these spirit stones are also very mixed, and they are not all yin spirit stones full of negative energy.

Yang Xiaole frowned and pondered for a while, and suddenly came up with a solution, that is, to exchange the spirit stones of other attributes and the various sects and small countries under the Immortal Buddha Empire for Yin spirit stones.

The demon cultivators and demon cultivators of the Immortal Buddha Empire have suffered a lot of casualties, and now most of them are Buddha cultivators and immortal cultivators, so the demand for Yin Spirit Stones has become very small, and the value of spirit stones of other attributes is much lower than that of other attributes.

If Yang Xiaole exchanged spirit stones with other attributes for Yin spirit stones, he should be able to exchange them for more Yin spirit stones.

Yang Xiaole immediately ruled the Baimei Daoist and the Laughing Head Tuo with a spiritual message, and asked them to help exchange all the spirit stones in the treasury of the Immortal Buddha Empire for Yin spirit stones.

However, even if Bai Mei Dao and Xiaotoutuo can help him exchange all the spirit stones in the treasury for Yin spirit stones, I am afraid that he will be able to raise one or two hundred million low-grade Yin spirit stones at most, and at most he can buy one or two standard units of spiritual quality, and he doesn't know how much soul equipment he can refine.

Yang Xiaole thought for a while and asked the demon Bobby, "To refine a piece of soul equipment, how many standard units of spiritual essence do you need to use?" ”

Majin Bobby shrugged his shoulders and said, "A standard unit of spiritual quality can just be used to refine a piece of soul equipment, of course, if you want to make that soul equipment more powerful, naturally the more spiritual quality you use!" ”

Yang Xiaole nodded suddenly, and then asked with some curiosity: "You just said that the spirit can also be integrated into the soul with a secret method to increase the strength of the soul?" ”

Majin Bobbi said: "Yes, the spiritual substance is originally the material that constitutes the soul, which can be extracted directly from the soul, and the spiritual ore that exists in nature is actually a large number of souls that are sealed and compressed by the natural environment, and then slowly condensed, so the spiritual essence can be integrated into the soul with secret methods to enhance the strength of the soul!" ”

Yang Xiaole asked, "Then what is this secret method, can you teach it to me?" ”

Majin Bobbi said with a grin: "As long as you buy spiritual essence from our store, this store is willing to provide you with a secret method of refining and absorbing spiritual essence for free, and it is also the most effective kind, which can ensure that you absorb spiritual essence 100% without the slightest waste!" ”

Yang Xiaole pondered for a while, then finally nodded and said, "Okay, I'll find a way to raise money first, and then order spiritual essence when I raise enough money!" ”

With that, Yang Xiaole turned around and walked out of the Demon Treasure Pavilion.