When Adrian spoke again, his tone had returned to its usual composure.
"After the battle ended, a master craftsman led the survivors and spent an enormous amount of resources to build a city on this cursed land. They cast the city walls from copper, used inscriptions to blockade the earth, and completely suppressed whatever lay underground."
He paused.
"The Church records mention that the master craftsman used every copper mine that could be found at the time. More than half of the entire western region's copper reserves were drained over those years. There are no exact records of how long the inscriptions took to carve, but judging by the Church's experience with projects of this kind, it must have taken at least a decade."
His gaze swept over the map on the table, marked with the positions of Copper Pillars and the orientation of the Copper Wall.
"The Church has records of this bronze creation. But those records are scarce. We only know that it has a name."
He looked at everyone present.
"Bronze Sin."
Lu Yuan's fingers tightened slightly beneath the table.
Bronze Sin.
He had personally seen those enormous Copper Pillars in the Abyss beneath the Pipe Network Layer. Dozens of people would have been needed to encircle one. They pierced through the rock overhead, slanted down along the cliffside, and extended into depths untouched by Holy Light. Their surfaces were densely covered in inscriptions, every groove carved at least two fingers deep into the copper.
At the time, the Gray-White Text had identified it: [Target detected: Bronze Sin (special bronze creation)].
"The Last Bronze Inscription Artifact."
That line of Gray-White Text surfaced vividly in his mind.
Not only that, the Gray-White Text had also detected an additional piece of information at the time: "trace resonance reaction." Something