Duke nodded to Caroline and stepped through the slowly opening door engraved with complex runes, pausing slightly at the sight that greeted him.

Instead of the expected warehouse or display racks, before his eyes was a vast sea of stars composed of pure energy.

Countless points of light, some bright, some dim, floated in the boundless void, each representing a resource available for exchange—materials, potions, knowledge, and even some secret information.

The spatial sense inside the hall was distorted and enlarged by magic, making it appear deep and vast.

The ground beneath his feet was a semi-transparent crystal stone, and upon stepping on it, a clear guiding light path automatically appeared, leading him to different areas.

A spiritual power message directly sounded in Duke's mind:

"Level 1 Arcanist Duke, welcome to the resource exchange space of the Arcane Master Association. Your current available points: 181. Please choose the category of resources you wish to browse according to the guidance: materials, knowledge, permissions..."

"Materials," Duke silently thought.

With his thought, the vast starry sea before him instantly transformed.

Most of the lights dimmed, leaving only about a third still bright, which then approached him and arranged themselves in a clearly discernible grid.

Beside each light point floated detailed textual descriptions and three-dimensional projection images: the name, nature, origin, rarity of the materials, and the points required for exchange.

These light points were all accessible within the permissions of a Level 1 Arcanist. The resources that could be accessed by Level 2 and Level 3 Arcanists did not appear at all, and Duke didn't even have the chance to view them.

Duke's gaze quickly scanned across; the permissions of a Level 1 Arcanist were indeed limited, with the material grades not being very high, yet the variety and comprehensive coverage still far exceeded the treasury within Black Sail.

The Arcane Master Association is an organization spread throughout the entire Wizard Plane and was established by Level 7 Arcanist Albert, whose foundation is indeed far deeper than that of Black Sail.

"Wind Attribute Crystal Core..." Duke's mind moved slightly again.

This space is quite special, able to directly sense Duke's spiritual power fluctuations, thus allowing him to express his thoughts directly through spiritual power.

As this spiritual power message was sent out, the material light points belonging to the wind attribute lit up in the grid, while the other types of materials dimmed.

Soon, several projections of materials with various shapes and pure wind attribute fluctuations appeared before him.

There was the Sky-breaking Crystal Core sharp as ice shards, the Flowing Wind Soil as round as pearls, and the Heart of Lanyu with structure complex as natural runes...

These materials could all be used as crystal cores for advancing to a Crystalized Wizard, though their quality varied.

Naturally, Duke wanted to choose the best, needing materials with extremely pure and high-concentration wind attribute energy.

However, the better the material, the more Arcanist points are required. He currently has a total of 181 Arcanist points, which, upon a quick look at the general prices, is only enough to exchange for one.

Duke originally wanted to exchange for two wind attribute crystal cores, one also prepared for Vivian; it seems he can only wait to gather more points later for the exchange.

Fortunately, Vivian is still far from the level of a Crystalized Wizard, so there's no rush for now.

Duke didn't rush to exchange the wind attribute crystal core but thought moved: "Light Attribute Crystal Core materials..."

As this spiritual power message was sent out, all the light points before him dimmed, indicating there were no materials matching Duke's requirements.

Duke wasn't sure if it was because there weren't any light attribute crystal cores in the resources space of the Arcane Master Association, or if it was because his current Level 1 Arcanist permission wasn't enough to see the light attribute crystal cores.

He leaned more towards the latter because the foundation of the Arcane Master Association is too profound; it should have light attribute crystal cores existing, just that his current level is too low to reach it for now.

The advancement of Arcanist levels isn't something that can be accomplished overnight, meaning it's temporarily impossible to obtain light attribute crystal cores from the channels of the Arcane Master Association, and another solution is needed.

"Better to first exchange the wind attribute crystal core..." With a thought, the light points before Duke shifted again, and several wind attribute materials floated before him.

Duke's gaze locked onto a wind attribute material called Cyan Mist Core, a core crystal produced from a wind attribute ore vein, possessing a very high concentration of wind attribute energy.

The Cyan Mist Core was also the most expensive among these wind attribute materials, requiring 151 Arcanist points to exchange.

Without much hesitation, Duke directly chose to exchange for it, leaving him with only thirty points.

The wind attribute crystal core was something he must have, so obtaining it first would be more reassuring.

The resource space of the Harbor City's Arcane Master Association only contained these few items, which might not be available if delayed.

It's said that the Arcane Master Associations of the West Coast are interconnected, and their resource spaces contain the same contents, not representing all resources of the Arcane Master Association within the entire Wizard Plane being here.

Upon Duke's mental confirmation, after the points were deducted, a diamond-shaped light green crystal appeared in his hand, emitting a very rich wind attribute energy aura.

He directly stored it in the space ring, not in a hurry to leave, but continued browsing.

"Knowledge." Duke silently thought again.

The starry sea altered once more, this time numerous scrolls, books, and even some strange rune marks composed of light blue lines appeared within the grid.

The introductions of knowledge resources were more detailed, including content overview, author, source, knowledge level, and the points required for exchange.

The price range varied widely, from a few points to several hundred points.

Duke even saw knowledge that could be exchanged with just one point of Arcanist points, though one shouldn't underestimate that one point.

Knowledge qualified to be exchanged here with Arcanist points all possessed high value, not just any knowledge could be placed here.

Duke recalled the several research results he previously submitted, and the magic potion outcomes he collaborated on with the Commerce Association couldn't be exchanged for Arcanist points, having already signed collaboration agreements with the Commerce Association.

He pondered, finding the Concentrated Potion more suitable for exchanging Arcanist points, provided it qualified.

Duke planned to ask Caroline how to proceed later, then focused on the various types of knowledge before him.

Given the multitude of knowledge types, the light points before him almost formed a sea of stars that was overwhelming to absorb.

Duke thought for a moment, then sent a thought: "Knowledge content related to advancing to a Crystalized Wizard."

With this spiritual power message sent, the light points before him instantly transformed, countless of them dimming, and the remaining bright ones automatically gathered in front of Duke.

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