Many precious materials and documents were engraved in some of the buildings of the ruins in order to be preserved for a long time, but the buildings themselves would suffer the greatest damage during excavation, causing a lot of it to be damaged beyond repair.
The Firerock Dwarves could unearth these valuable materials without causing any damage.
This was also why, in a few millennia, major forces were willing to bleed to hire a Firerock Dwarf to excavate ruins.
But these Firerock Dwarves weren't without weaknesses. They were obsessed with blacksmithing and craftsmanship. Anything new could make a Firerock Dwarf crazy with desire.
Lin Yun still remembered the most famous occurrence of a Firerock Dwarf being swindled. An alchemist once had a sudden stroke of inspiration and fused a few kinds of materials by refining them to obtain a composite metal that didn't actually look like a composite metal. It looked just like a common piece of magic metal.
