Vortex Ore, or the "Devouring Sky Beast" bone fragments, are the local specialty that the Aus company treasures.
This ore isn't even the bone itself but rather a "crystal" with some bone material permeating it.
Initially, someone discovered these bones and tried to mine them... The materials from this level of monster were undoubtedly valuable.
But from the results, the mining was quite a failure. Lu Ping'an used all his strength with a silver weapon and couldn't even leave a scratch.
Just imagining that, he could guess how helpless the original miners must have felt.
But a big company is still a big company. They spent money to hire a Rule-level master. That guy went all out and successfully... knocked off a tiny, fingernail-sized thin piece.
"...Damn, this thing is too exaggerated."
Lu Ping'an looked at the small piece in the picture, not knowing whether to be amazed by the strength of the Rule-level Battle-profession, or by the outrageous hardness of this thing.
