Every blacksmith possessed different spiritual fires, but as long as one did not conceal one's smithing process on purpose, the rough situation inside one's fire could still be seen.
As when Ou Yangming was smithing a piece of equipment at the moment, he did not cover up his Military Fire at all, hence Lin Feifeng could roughly see when the peculiar stones inside began to melt and soften.
Nonetheless, it was the exact reason Lin Feifeng was shocked and was in disbelief.
The 2 ores picked by Ou Yangming were definitely considered treasured in the lower realm, but they were extremely ordinary in the Spiritual Realm.
Although they could not be found everywhere, any blacksmith could find lots of them as long as one put in a little effort.