C1849 Mining Ore Exchange Device

The Inventory Bag was brimming with items, including several hundred Supreme Spirit Crystals. Regrettably, not a single God Grade Spirit Crystal was among them.

With a sigh, Su Yi was about to seal the bag when he unexpectedly discovered a square metal box over half a meter in length.

Intricate patterns resembling gears were etched onto the box's surface, exuding an air of mystery