Thinking this way, Fang Yun began to release the exploratory waves of energy from his body into the air.
However, 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 sense the corresponding energy bodies.
However, Fang Yun's ability to sense the contents detected by the exploratory technique probably does not rely on a reflection like sound waves.
After all, he could only sense the wave being emitted, without feeling any returning reflections.
Thinking back to his consciousness attaching to the fluctuation during his breakthrough, sensing those energies.
