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The public channel on the radio is not encrypted, so as long as you are within the range of the radio's transmission, you can hear the conversations on the public channel. The sand dredging boats operate on the river surface, and for the sake of convenience and safety, they are likely to be equipped with radio equipment.
In other words, the conversation that the fishermen just had on the radio could very well have been overheard by the people on the sand dredging boats.
"I wasn't careful, I wasn't careful!" Gu kept slapping his thigh, looking extremely dismayed.
Being young and with less exposure to the sinister aspects of society, Nangong Huang didn't understand and asked, "So what if they heard it, what's the big deal?"
"Gu, let's drive the boat over there and take a look," Suming said with a stern face.
