The instant the signal suddenly sounded, it was as if a bolt of lightning had split the sky, illuminating everything around them.
The patrol boat, powered by three Heavy Electric Motors, suddenly picked up speed and began cruising around the area.
Boom.
Boom.
A continuous series of explosive sounds came through the headset, like muffled thunder—sometimes high-pitched and piercing, sometimes deep and sonorous.
Guo Buluo's eyes glittered with barely contained excitement. The intensity of that light was so fierce that his eyes even took on a faint red tinge.
The torment and exhaustion of the entire night were swept away in an instant by this sudden surge of excitement, leaving behind only madness.
With ordinary special items, even when they were within arm's reach, the signal strength never reached this level.
At most, they would cause the detector's readings to soar to a relatively high level. The sound could still be kept within a suitable range—not so faint that it would be ignored, nor so loud that it became uncomfortable.
The special item detected this time, however, was different.
In an abstract sense, Guo Buluo even felt as though someone was speaking to him through the signal detector.
The detector simply could not analyze the other party's frequency band, which was why it had exceeded the detector's detection range.
What kind of thing could actually speak? Guo Buluo did not dare imagine it. Since he had begun studying these special items, he had never encountered anything like it.
Moreover, ordinary divine power fluctuations could still be used to roughly determine a direction through changes in the sound.
With a fluctuation like the one before him, he could only barely judge the direction by looking at the reading needle on the instrument.
When the needle began jumping faster, it meant they