The starting price for a Mid-Grade World Extinction Cannon was one hundred thousand Immortal Essence Stones. It was in high demand, with buyers but no stock.
As far as he knew, a Low-Grade World Extinction Cannon cost tens of thousands of Immortal Essence Stones, enough to buy a decent Mid-Grade Immortal Artifact. A Mid-Grade World Extinction Cannon cost hundreds of thousands of Immortal Essence Stones, enough to buy several Second-Order Immortal Formations.
Hundred Refinements Island had always been purchasing Thunder Amber Crystals. At the island's purchasing price, the Thunder Amber Crystal in Wang Changsheng's possession was worth fifty thousand Immortal Essence Stones. It was in high demand, with buyers but no stock.
Wang Changsheng had spent only one thousand Immortal Essence Stones to obtain a Thunder Amber Crystal, not even counting the other materials. He had made an enormous profit.
If not for the Azure Lotus Creation Cauldron, he would never have bought that chunk-shaped object, much less restored it to its original materials.
Given the value of this Thunder Amber Crystal, Wang Changsheng could easily exchange it for a Mid-Grade Immortal Artifact. However, he had no intention of doing so. That would be far too wasteful.
The treasury of the Sky Beast Sect also contained quite a few Refining Materials, but they were worlds apart from the Thunder Amber Crystal.
The Azure Lotus Creation Cauldron had restored the chunk-shaped object into nine materials. Aside from the Thunder Amber Crystal, there were eight other materials, all of which could be used to refine Mid-Grade Immortal Artifacts.
He guessed that some Golden Immortal cultivator had been using the Thunder Amber Crystal to refine the core component of a World Extinction Cannon. Partway through the refinement, Chaos Beasts had breached the city, forcing the Golden Immortal cultivator to stop refining and hurriedly