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... er, unfortunately, the waves did not bring any visual changes to his perspective.
Perhaps this fluctuation is only reactive with the energies within the earth.
Thus, Fang Yun was able to observe the types of energies within the ground.
But in the air, these energies were too thin, perhaps not reactive to the investigative waves.
From this aspect, the principle of this exploratory technique should be similar to sound waves.
It relies on energy collisions to ...
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