The eight trigrams instrument disc in Lu mingheng's hand could trace back the local spirit Qi change trend for a long time.
He had been worried before that the spiritual Qi in the valley was very special. It was a problem whether the eight trigrams instrument could be traced back.
After trying it out, he found that this was not a big deal. The eight trigrams disc could be traced back. After all, no matter what, void spiritual energy was still a type of spiritual energy and nothing else.
However, he also encountered another problem.
It was true that they could trace it back. However, this thing that was suspected to be Void Spirit Qi had a corrosive-or rather, an annihilating effect-but the patellas were only targeted at things like humans or living things. At this time, any object that reacted with the void Spirit Qi would be annihilated.