After two consecutive energy cannon attacks, the blue light shield that had enveloped the mysterious aircraft's body began to dim, no longer as dazzling as before.
Yan Fei immediately noticed this subtle change, and then he thought of a most critical question, which was the source of the mysterious aircraft's energy? This mysterious aircraft had very powerful data, even far surpassing Yan Fei's Drone Avatar, and to perform such formidable flying maneuvers, it required a tremendous amount of energy support. Yan Fei did not know what the energy source of the mysterious aircraft was, but it must be very advanced, far exceeding current Earth standards.
